CINXE.COM

NIST Center for Neutron Research | NIST

<!DOCTYPE html> <html lang="en" dir="ltr" prefix="content: http://purl.org/rss/1.0/modules/content/ dc: http://purl.org/dc/terms/ foaf: http://xmlns.com/foaf/0.1/ og: http://ogp.me/ns# rdfs: http://www.w3.org/2000/01/rdf-schema# schema: http://schema.org/ sioc: http://rdfs.org/sioc/ns# sioct: http://rdfs.org/sioc/types# skos: http://www.w3.org/2004/02/skos/core# xsd: http://www.w3.org/2001/XMLSchema# "> <head><script type="text/javascript" src="/_static/js/bundle-playback.js?v=HxkREWBo" charset="utf-8"></script> <script type="text/javascript" src="/_static/js/wombat.js?v=txqj7nKC" charset="utf-8"></script> <script>window.RufflePlayer=window.RufflePlayer||{};window.RufflePlayer.config={"autoplay":"on","unmuteOverlay":"hidden"};</script> <script type="text/javascript" src="/_static/js/ruffle/ruffle.js"></script> <script type="text/javascript"> __wm.init("https://web.archive.org/web"); __wm.wombat("https://www.nist.gov/ncnr","20231128043227","https://web.archive.org/","web","/_static/", "1701145947"); </script> <link rel="stylesheet" type="text/css" href="/_static/css/banner-styles.css?v=S1zqJCYt" /> <link rel="stylesheet" type="text/css" href="/_static/css/iconochive.css?v=3PDvdIFv" /> <!-- End Wayback Rewrite JS Include --> <meta charset="utf-8"/><script type="text/javascript">(window.NREUM||(NREUM={})).init={ajax:{deny_list:["gov-bam.nr-data.net"]}};(window.NREUM||(NREUM={})).loader_config={licenseKey:"37b7ccb661",applicationID:"1089704227"};;/*! For license information please see nr-loader-rum-1.248.0.min.js.LICENSE.txt */ (()=>{var e,t,n={234:(e,t,n)=>{"use strict";n.d(t,{P_:()=>h,Mt:()=>m,C5:()=>s,DL:()=>w,OP:()=>j,lF:()=>R,Yu:()=>_,Dg:()=>v,CX:()=>c,GE:()=>A,sU:()=>T});var r=n(8632),i=n(9567);const a={beacon:r.ce.beacon,errorBeacon:r.ce.errorBeacon,licenseKey:void 0,applicationID:void 0,sa:void 0,queueTime:void 0,applicationTime:void 0,ttGuid:void 0,user:void 0,account:void 0,product:void 0,extra:void 0,jsAttributes:{},userAttributes:void 0,atts:void 0,transactionName:void 0,tNamePlain:void 0},o={};function s(e){if(!e)throw new Error("All info objects require an agent identifier!");if(!o[e])throw new Error("Info for ".concat(e," was never set"));return o[e]}function c(e,t){if(!e)throw new Error("All info objects require an agent identifier!");o[e]=(0,i.D)(t,a);const n=(0,r.ek)(e);n&&(n.info=o[e])}const u=e=>{if(!e||"string"!=typeof e)return!1;try{document.createDocumentFragment().querySelector(e)}catch{return!1}return!0};var d=n(7056),l=n(50);const f=()=>{const e={mask_selector:"*",block_selector:"[data-nr-block]",mask_input_options:{color:!1,date:!1,"datetime-local":!1,email:!1,month:!1,number:!1,range:!1,search:!1,tel:!1,text:!1,time:!1,url:!1,week:!1,textarea:!1,select:!1,password:!0}};return{feature_flags:[],proxy:{assets:void 0,beacon:void 0},privacy:{cookies_enabled:!0},ajax:{deny_list:void 0,block_internal:!0,enabled:!0,harvestTimeSeconds:10,autoStart:!0},distributed_tracing:{enabled:void 0,exclude_newrelic_header:void 0,cors_use_newrelic_header:void 0,cors_use_tracecontext_headers:void 0,allowed_origins:void 0},session:{domain:void 0,expiresMs:d.oD,inactiveMs:d.Hb},ssl:void 0,obfuscate:void 0,jserrors:{enabled:!0,harvestTimeSeconds:10,autoStart:!0},metrics:{enabled:!0,autoStart:!0},page_action:{enabled:!0,harvestTimeSeconds:30,autoStart:!0},page_view_event:{enabled:!0,autoStart:!0},page_view_timing:{enabled:!0,harvestTimeSeconds:30,long_task:!1,autoStart:!0},session_trace:{enabled:!0,harvestTimeSeconds:10,autoStart:!0},harvest:{tooManyRequestsDelay:60},session_replay:{autoStart:!0,enabled:!1,harvestTimeSeconds:60,sampling_rate:50,error_sampling_rate:50,collect_fonts:!1,inline_images:!1,inline_stylesheet:!0,mask_all_inputs:!0,get mask_text_selector(){return e.mask_selector},set mask_text_selector(t){u(t)?e.mask_selector=t+",[data-nr-mask]":null===t?e.mask_selector=t:(0,l.Z)("An invalid session_replay.mask_selector was provided and will not be used",t)},get block_class(){return"nr-block"},get ignore_class(){return"nr-ignore"},get mask_text_class(){return"nr-mask"},get block_selector(){return e.block_selector},set block_selector(t){u(t)?e.block_selector+=",".concat(t):""!==t&&(0,l.Z)("An invalid session_replay.block_selector was provided and will not be used",t)},get mask_input_options(){return e.mask_input_options},set mask_input_options(t){t&&"object"==typeof t?e.mask_input_options={...t,password:!0}:(0,l.Z)("An invalid session_replay.mask_input_option was provided and will not be used",t)}},spa:{enabled:!0,harvestTimeSeconds:10,autoStart:!0}}},g={},p="All configuration objects require an agent identifier!";function h(e){if(!e)throw new Error(p);if(!g[e])throw new Error("Configuration for ".concat(e," was never set"));return g[e]}function v(e,t){if(!e)throw new Error(p);g[e]=(0,i.D)(t,f());const n=(0,r.ek)(e);n&&(n.init=g[e])}function m(e,t){if(!e)throw new Error(p);var n=h(e);if(n){for(var r=t.split("."),i=0;i<r.length-1;i++)if("object"!=typeof(n=n[r[i]]))return;n=n[r[r.length-1]]}return n}const b={accountID:void 0,trustKey:void 0,agentID:void 0,licenseKey:void 0,applicationID:void 0,xpid:void 0},y={};function w(e){if(!e)throw new Error("All loader-config objects require an agent identifier!");if(!y[e])throw new Error("LoaderConfig for ".concat(e," was never set"));return y[e]}function A(e,t){if(!e)throw new Error("All loader-config objects require an agent identifier!");y[e]=(0,i.D)(t,b);const n=(0,r.ek)(e);n&&(n.loader_config=y[e])}const _=(0,r.mF)().o;var x=n(385),D=n(6818);const k={buildEnv:D.Re,customTransaction:void 0,disabled:!1,distMethod:D.gF,isolatedBacklog:!1,loaderType:void 0,maxBytes:3e4,offset:Math.floor(x._A?.performance?.timeOrigin||x._A?.performance?.timing?.navigationStart||Date.now()),onerror:void 0,origin:""+x._A.location,ptid:void 0,releaseIds:{},session:void 0,xhrWrappable:"function"==typeof x._A.XMLHttpRequest?.prototype?.addEventListener,version:D.q4,denyList:void 0},E={};function j(e){if(!e)throw new Error("All runtime objects require an agent identifier!");if(!E[e])throw new Error("Runtime for ".concat(e," was never set"));return E[e]}function T(e,t){if(!e)throw new Error("All runtime objects require an agent identifier!");E[e]=(0,i.D)(t,k);const n=(0,r.ek)(e);n&&(n.runtime=E[e])}function R(e){return function(e){try{const t=s(e);return!!t.licenseKey&&!!t.errorBeacon&&!!t.applicationID}catch(e){return!1}}(e)}},9567:(e,t,n)=>{"use strict";n.d(t,{D:()=>i});var r=n(50);function i(e,t){try{if(!e||"object"!=typeof e)return(0,r.Z)("Setting a Configurable requires an object as input");if(!t||"object"!=typeof t)return(0,r.Z)("Setting a Configurable requires a model to set its initial properties");const n=Object.create(Object.getPrototypeOf(t),Object.getOwnPropertyDescriptors(t)),a=0===Object.keys(n).length?e:n;for(let o in a)if(void 0!==e[o])try{Array.isArray(e[o])&&Array.isArray(t[o])?n[o]=Array.from(new Set([...e[o],...t[o]])):"object"==typeof e[o]&&"object"==typeof t[o]?n[o]=i(e[o],t[o]):n[o]=e[o]}catch(e){(0,r.Z)("An error occurred while setting a property of a Configurable",e)}return n}catch(e){(0,r.Z)("An error occured while setting a Configurable",e)}}},6818:(e,t,n)=>{"use strict";n.d(t,{Re:()=>i,gF:()=>a,q4:()=>r});const r="1.248.0",i="PROD",a="CDN"},385:(e,t,n)=>{"use strict";n.d(t,{Nk:()=>d,Tt:()=>s,_A:()=>a,cv:()=>l,iS:()=>o,il:()=>r,ux:()=>c,v6:()=>i,w1:()=>u});const r="undefined"!=typeof window&&!!window.document,i="undefined"!=typeof WorkerGlobalScope&&("undefined"!=typeof self&&self instanceof WorkerGlobalScope&&self.navigator instanceof WorkerNavigator||"undefined"!=typeof globalThis&&globalThis instanceof WorkerGlobalScope&&globalThis.navigator instanceof WorkerNavigator),a=r?window:"undefined"!=typeof WorkerGlobalScope&&("undefined"!=typeof self&&self instanceof WorkerGlobalScope&&self||"undefined"!=typeof globalThis&&globalThis instanceof WorkerGlobalScope&&globalThis),o=(a?.document?.readyState,Boolean("hidden"===a?.document?.visibilityState)),s=(a?.location,/iPad|iPhone|iPod/.test(a.navigator?.userAgent)),c=s&&"undefined"==typeof SharedWorker,u=((()=>{const e=a.navigator?.userAgent?.match(/Firefox[/\s](\d+\.\d+)/);Array.isArray(e)&&e.length>=2&&e[1]})(),Boolean(r&&window.document.documentMode)),d=!!a.navigator?.sendBeacon,l=Math.floor(a?.performance?.timeOrigin||a?.performance?.timing?.navigationStart||Date.now())},1117:(e,t,n)=>{"use strict";n.d(t,{w:()=>a});var r=n(50);const i={agentIdentifier:"",ee:void 0};class a{constructor(e){try{if("object"!=typeof e)return(0,r.Z)("shared context requires an object as input");this.sharedContext={},Object.assign(this.sharedContext,i),Object.entries(e).forEach((e=>{let[t,n]=e;Object.keys(i).includes(t)&&(this.sharedContext[t]=n)}))}catch(e){(0,r.Z)("An error occured while setting SharedContext",e)}}}},8e3:(e,t,n)=>{"use strict";n.d(t,{L:()=>d,R:()=>c});var r=n(8325),i=n(1284),a=n(4322),o=n(3325);const s={};function c(e,t){const n={staged:!1,priority:o.p[t]||0};u(e),s[e].get(t)||s[e].set(t,n)}function u(e){e&&(s[e]||(s[e]=new Map))}function d(){let e=arguments.length>0&&void 0!==arguments[0]?arguments[0]:"",t=arguments.length>1&&void 0!==arguments[1]?arguments[1]:"feature";if(u(e),!e||!s[e].get(t))return o(t);s[e].get(t).staged=!0;const n=[...s[e]];function o(t){const n=e?r.ee.get(e):r.ee,o=a.X.handlers;if(n.backlog&&o){var s=n.backlog[t],c=o[t];if(c){for(var u=0;s&&u<s.length;++u)l(s[u],c);(0,i.D)(c,(function(e,t){(0,i.D)(t,(function(t,n){n[0].on(e,n[1])}))}))}delete o[t],n.backlog[t]=null,n.emit("drain-"+t,[])}}n.every((e=>{let[t,n]=e;return n.staged}))&&(n.sort(((e,t)=>e[1].priority-t[1].priority)),n.forEach((t=>{let[n]=t;s[e].delete(n),o(n)})))}function l(e,t){var n=e[1];(0,i.D)(t[n],(function(t,n){var r=e[0];if(n[0]===r){var i=n[1],a=e[3],o=e[2];i.apply(a,o)}}))}},8325:(e,t,n)=>{"use strict";n.d(t,{A:()=>c,ee:()=>u});var r=n(8632),i=n(2210),a=n(234);class o{constructor(e){this.contextId=e}}var s=n(3117);const c="nr@context:".concat(s.a),u=function e(t,n){var r={},s={},d={},f=!1;try{f=16===n.length&&(0,a.OP)(n).isolatedBacklog}catch(e){}var g={on:h,addEventListener:h,removeEventListener:function(e,t){var n=r[e];if(!n)return;for(var i=0;i<n.length;i++)n[i]===t&&n.splice(i,1)},emit:function(e,n,r,i,a){!1!==a&&(a=!0);if(u.aborted&&!i)return;t&&a&&t.emit(e,n,r);for(var o=p(r),c=v(e),d=c.length,l=0;l<d;l++)c[l].apply(o,n);var f=b()[s[e]];f&&f.push([g,e,n,o]);return o},get:m,listeners:v,context:p,buffer:function(e,t){const n=b();if(t=t||"feature",g.aborted)return;Object.entries(e||{}).forEach((e=>{let[r,i]=e;s[i]=t,t in n||(n[t]=[])}))},abort:l,aborted:!1,isBuffering:function(e){return!!b()[s[e]]},debugId:n,backlog:f?{}:t&&"object"==typeof t.backlog?t.backlog:{}};return g;function p(e){return e&&e instanceof o?e:e?(0,i.X)(e,c,(()=>new o(c))):new o(c)}function h(e,t){r[e]=v(e).concat(t)}function v(e){return r[e]||[]}function m(t){return d[t]=d[t]||e(g,t)}function b(){return g.backlog}}(void 0,"globalEE"),d=(0,r.fP)();function l(){u.aborted=!0,u.backlog={}}d.ee||(d.ee=u)},5546:(e,t,n)=>{"use strict";n.d(t,{E:()=>r,p:()=>i});var r=n(8325).ee.get("handle");function i(e,t,n,i,a){a?(a.buffer([e],i),a.emit(e,t,n)):(r.buffer([e],i),r.emit(e,t,n))}},4322:(e,t,n)=>{"use strict";n.d(t,{X:()=>a});var r=n(5546);a.on=o;var i=a.handlers={};function a(e,t,n,a){o(a||r.E,i,e,t,n)}function o(e,t,n,i,a){a||(a="feature"),e||(e=r.E);var o=t[a]=t[a]||{};(o[n]=o[n]||[]).push([e,i])}},3239:(e,t,n)=>{"use strict";n.d(t,{bP:()=>s,iz:()=>c,m$:()=>o});var r=n(385);let i=!1,a=!1;try{const e={get passive(){return i=!0,!1},get signal(){return a=!0,!1}};r._A.addEventListener("test",null,e),r._A.removeEventListener("test",null,e)}catch(e){}function o(e,t){return i||a?{capture:!!e,passive:i,signal:t}:!!e}function s(e,t){let n=arguments.length>2&&void 0!==arguments[2]&&arguments[2],r=arguments.length>3?arguments[3]:void 0;window.addEventListener(e,t,o(n,r))}function c(e,t){let n=arguments.length>2&&void 0!==arguments[2]&&arguments[2],r=arguments.length>3?arguments[3]:void 0;document.addEventListener(e,t,o(n,r))}},3117:(e,t,n)=>{"use strict";n.d(t,{a:()=>r});const r=(0,n(4402).Rl)()},4402:(e,t,n)=>{"use strict";n.d(t,{Rl:()=>o,ky:()=>s});var r=n(385);const i="xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx";function a(e,t){return e?15&e[t]:16*Math.random()|0}function o(){const e=r._A?.crypto||r._A?.msCrypto;let t,n=0;return e&&e.getRandomValues&&(t=e.getRandomValues(new Uint8Array(31))),i.split("").map((e=>"x"===e?a(t,++n).toString(16):"y"===e?(3&a()|8).toString(16):e)).join("")}function s(e){const t=r._A?.crypto||r._A?.msCrypto;let n,i=0;t&&t.getRandomValues&&(n=t.getRandomValues(new Uint8Array(31)));const o=[];for(var s=0;s<e;s++)o.push(a(n,++i).toString(16));return o.join("")}},7056:(e,t,n)=>{"use strict";n.d(t,{Bq:()=>r,Hb:()=>a,oD:()=>i});const r="NRBA",i=144e5,a=18e5},7894:(e,t,n)=>{"use strict";function r(){return Math.round(performance.now())}n.d(t,{z:()=>r})},50:(e,t,n)=>{"use strict";function r(e,t){"function"==typeof console.warn&&(console.warn("New Relic: ".concat(e)),t&&console.warn(t))}n.d(t,{Z:()=>r})},2825:(e,t,n)=>{"use strict";n.d(t,{N:()=>d,T:()=>l});var r=n(8325),i=n(5546),a=n(3325),o=n(385);const s="newrelic";const c={stn:[a.D.sessionTrace],err:[a.D.jserrors,a.D.metrics],ins:[a.D.pageAction],spa:[a.D.spa],sr:[a.D.sessionReplay,a.D.sessionTrace]},u=new Set;function d(e,t){const n=r.ee.get(t);e&&"object"==typeof e&&(u.has(t)||(Object.entries(e).forEach((e=>{let[t,r]=e;c[t]?c[t].forEach((e=>{r?(0,i.p)("feat-"+t,[],void 0,e,n):(0,i.p)("block-"+t,[],void 0,e,n),(0,i.p)("rumresp-"+t,[Boolean(r)],void 0,e,n)})):r&&(0,i.p)("feat-"+t,[],void 0,void 0,n),l[t]=Boolean(r)})),Object.keys(c).forEach((e=>{void 0===l[e]&&(c[e]?.forEach((t=>(0,i.p)("rumresp-"+e,[!1],void 0,t,n))),l[e]=!1)})),u.add(t),function(){let e=arguments.length>0&&void 0!==arguments[0]?arguments[0]:{};try{o._A.dispatchEvent(new CustomEvent(s,{detail:e}))}catch(e){}}({loaded:!0})))}const l={}},2210:(e,t,n)=>{"use strict";n.d(t,{X:()=>i});var r=Object.prototype.hasOwnProperty;function i(e,t,n){if(r.call(e,t))return e[t];var i=n();if(Object.defineProperty&&Object.keys)try{return Object.defineProperty(e,t,{value:i,writable:!0,enumerable:!1}),i}catch(e){}return e[t]=i,i}},1284:(e,t,n)=>{"use strict";n.d(t,{D:()=>r});const r=(e,t)=>Object.entries(e||{}).map((e=>{let[n,r]=e;return t(n,r)}))},4351:(e,t,n)=>{"use strict";n.d(t,{P:()=>a});var r=n(8325);const i=()=>{const e=new WeakSet;return(t,n)=>{if("object"==typeof n&&null!==n){if(e.has(n))return;e.add(n)}return n}};function a(e){try{return JSON.stringify(e,i())}catch(e){try{r.ee.emit("internal-error",[e])}catch(e){}}}},3960:(e,t,n)=>{"use strict";n.d(t,{KB:()=>o,b2:()=>a});var r=n(3239);function i(){return"undefined"==typeof document||"complete"===document.readyState}function a(e,t){if(i())return e();(0,r.bP)("load",e,t)}function o(e){if(i())return e();(0,r.iz)("DOMContentLoaded",e)}},8632:(e,t,n)=>{"use strict";n.d(t,{EZ:()=>d,ce:()=>a,ek:()=>u,fP:()=>o,gG:()=>l,h5:()=>c,mF:()=>s});var r=n(7894),i=n(385);const a={beacon:"bam.nr-data.net",errorBeacon:"bam.nr-data.net"};function o(){return i._A.NREUM||(i._A.NREUM={}),void 0===i._A.newrelic&&(i._A.newrelic=i._A.NREUM),i._A.NREUM}function s(){let e=o();return e.o||(e.o={ST:i._A.setTimeout,SI:i._A.setImmediate,CT:i._A.clearTimeout,XHR:i._A.XMLHttpRequest,REQ:i._A.Request,EV:i._A.Event,PR:i._A.Promise,MO:i._A.MutationObserver,FETCH:i._A.fetch}),e}function c(e,t){let n=o();n.initializedAgents??={},t.initializedAt={ms:(0,r.z)(),date:new Date},n.initializedAgents[e]=t}function u(e){let t=o();return t.initializedAgents?.[e]}function d(e,t){o()[e]=t}function l(){return function(){let e=o();const t=e.info||{};e.info={beacon:a.beacon,errorBeacon:a.errorBeacon,...t}}(),function(){let e=o();const t=e.init||{};e.init={...t}}(),s(),function(){let e=o();const t=e.loader_config||{};e.loader_config={...t}}(),o()}},7956:(e,t,n)=>{"use strict";n.d(t,{N:()=>i});var r=n(3239);function i(e){let t=arguments.length>1&&void 0!==arguments[1]&&arguments[1],n=arguments.length>2?arguments[2]:void 0,i=arguments.length>3?arguments[3]:void 0;(0,r.iz)("visibilitychange",(function(){if(t)return void("hidden"===document.visibilityState&&e());e(document.visibilityState)}),n,i)}},3081:(e,t,n)=>{"use strict";n.d(t,{gF:()=>a,mY:()=>i,t9:()=>r,vz:()=>s,xS:()=>o});const r=n(3325).D.metrics,i="sm",a="cm",o="storeSupportabilityMetrics",s="storeEventMetrics"},7633:(e,t,n)=>{"use strict";n.d(t,{t:()=>r});const r=n(3325).D.pageViewEvent},9251:(e,t,n)=>{"use strict";n.d(t,{t:()=>r});const r=n(3325).D.pageViewTiming},5938:(e,t,n)=>{"use strict";n.d(t,{W:()=>i});var r=n(8325);class i{constructor(e,t,n){this.agentIdentifier=e,this.aggregator=t,this.ee=r.ee.get(e),this.featureName=n,this.blocked=!1}}},7530:(e,t,n)=>{"use strict";n.d(t,{j:()=>b});var r=n(3325),i=n(234),a=n(5546),o=n(8325),s=n(7894),c=n(8e3),u=n(3960),d=n(385),l=n(50),f=n(3081),g=n(8632);function p(){const e=(0,g.gG)();["setErrorHandler","finished","addToTrace","addRelease","addPageAction","setCurrentRouteName","setPageViewName","setCustomAttribute","interaction","noticeError","setUserId","setApplicationVersion","start","recordReplay","pauseReplay"].forEach((t=>{e[t]=function(){for(var n=arguments.length,r=new Array(n),i=0;i<n;i++)r[i]=arguments[i];return function(t){for(var n=arguments.length,r=new Array(n>1?n-1:0),i=1;i<n;i++)r[i-1]=arguments[i];let a=[];return Object.values(e.initializedAgents).forEach((e=>{e.exposed&&e.api[t]&&a.push(e.api[t](...r))})),a.length>1?a:a[0]}(t,...r)}}))}var h=n(2825);const v=e=>{const t=e.startsWith("http");e+="/",n.p=t?e:"https://"+e};let m=!1;function b(e){let t=arguments.length>1&&void 0!==arguments[1]?arguments[1]:{},b=arguments.length>2?arguments[2]:void 0,y=arguments.length>3?arguments[3]:void 0,{init:w,info:A,loader_config:_,runtime:x={loaderType:b},exposed:D=!0}=t;const k=(0,g.gG)();A||(w=k.init,A=k.info,_=k.loader_config),(0,i.Dg)(e.agentIdentifier,w||{}),(0,i.GE)(e.agentIdentifier,_||{}),A.jsAttributes??={},d.v6&&(A.jsAttributes.isWorker=!0),(0,i.CX)(e.agentIdentifier,A);const E=(0,i.P_)(e.agentIdentifier),j=[A.beacon,A.errorBeacon];m||(E.proxy.assets&&(v(E.proxy.assets),j.push(E.proxy.assets)),E.proxy.beacon&&j.push(E.proxy.beacon),p(),(0,g.EZ)("activatedFeatures",h.T)),x.denyList=[...E.ajax.deny_list||[],...E.ajax.block_internal?j:[]],(0,i.sU)(e.agentIdentifier,x),void 0===e.api&&(e.api=function(e,t){t||(0,c.R)(e,"api");const g={};var p=o.ee.get(e),h=p.get("tracer"),v="api-",m=v+"ixn-";function b(t,n,r,a){const o=(0,i.C5)(e);return null===n?delete o.jsAttributes[t]:(0,i.CX)(e,{...o,jsAttributes:{...o.jsAttributes,[t]:n}}),A(v,r,!0,a||null===n?"session":void 0)(t,n)}function y(){}["setErrorHandler","finished","addToTrace","addRelease"].forEach((e=>{g[e]=A(v,e,!0,"api")})),g.addPageAction=A(v,"addPageAction",!0,r.D.pageAction),g.setCurrentRouteName=A(v,"routeName",!0,r.D.spa),g.setPageViewName=function(t,n){if("string"==typeof t)return"/"!==t.charAt(0)&&(t="/"+t),(0,i.OP)(e).customTransaction=(n||"https://web.archive.org/web/20231128043227/http://custom.transaction")+t,A(v,"setPageViewName",!0)()},g.setCustomAttribute=function(e,t){let n=arguments.length>2&&void 0!==arguments[2]&&arguments[2];if("string"==typeof e){if(["string","number","boolean"].includes(typeof t)||null===t)return b(e,t,"setCustomAttribute",n);(0,l.Z)("Failed to execute setCustomAttribute.\nNon-null value must be a string, number or boolean type, but a type of <".concat(typeof t,"> was provided."))}else(0,l.Z)("Failed to execute setCustomAttribute.\nName must be a string type, but a type of <".concat(typeof e,"> was provided."))},g.setUserId=function(e){if("string"==typeof e||null===e)return b("enduser.id",e,"setUserId",!0);(0,l.Z)("Failed to execute setUserId.\nNon-null value must be a string type, but a type of <".concat(typeof e,"> was provided."))},g.setApplicationVersion=function(e){if("string"==typeof e||null===e)return b("application.version",e,"setApplicationVersion",!1);(0,l.Z)("Failed to execute setApplicationVersion. Expected <String | null>, but got <".concat(typeof e,">."))},g.start=e=>{try{const t=e?"defined":"undefined";(0,a.p)(f.xS,["API/start/".concat(t,"/called")],void 0,r.D.metrics,p);const n=Object.values(r.D);if(void 0===e)e=n;else{if((e=Array.isArray(e)&&e.length?e:[e]).some((e=>!n.includes(e))))return(0,l.Z)("Invalid feature name supplied. Acceptable feature names are: ".concat(n));e.includes(r.D.pageViewEvent)||e.push(r.D.pageViewEvent)}e.forEach((e=>{p.emit("".concat(e,"-opt-in"))}))}catch(e){(0,l.Z)("An unexpected issue occurred",e)}},g.recordReplay=function(){(0,a.p)(f.xS,["API/recordReplay/called"],void 0,r.D.metrics,p),(0,a.p)("recordReplay",[],void 0,r.D.sessionReplay,p)},g.pauseReplay=function(){(0,a.p)(f.xS,["API/pauseReplay/called"],void 0,r.D.metrics,p),(0,a.p)("pauseReplay",[],void 0,r.D.sessionReplay,p)},g.interaction=function(){return(new y).get()};var w=y.prototype={createTracer:function(e,t){var n={},i=this,o="function"==typeof t;return(0,a.p)(f.xS,["API/createTracer/called"],void 0,r.D.metrics,p),(0,a.p)(m+"tracer",[(0,s.z)(),e,n],i,r.D.spa,p),function(){if(h.emit((o?"":"no-")+"fn-start",[(0,s.z)(),i,o],n),o)try{return t.apply(this,arguments)}catch(e){throw h.emit("fn-err",[arguments,this,e],n),e}finally{h.emit("fn-end",[(0,s.z)()],n)}}}};function A(e,t,n,i){return function(){return(0,a.p)(f.xS,["API/"+t+"/called"],void 0,r.D.metrics,p),i&&(0,a.p)(e+t,[(0,s.z)(),...arguments],n?null:this,i,p),n?void 0:this}}function _(){n.e(75).then(n.bind(n,7438)).then((t=>{let{setAPI:n}=t;n(e),(0,c.L)(e,"api")})).catch((()=>(0,l.Z)("Downloading runtime APIs failed...")))}return["actionText","setName","setAttribute","save","ignore","onEnd","getContext","end","get"].forEach((e=>{w[e]=A(m,e,void 0,r.D.spa)})),g.noticeError=function(e,t){"string"==typeof e&&(e=new Error(e)),(0,a.p)(f.xS,["API/noticeError/called"],void 0,r.D.metrics,p),(0,a.p)("err",[e,(0,s.z)(),!1,t],void 0,r.D.jserrors,p)},d.il?(0,u.b2)((()=>_()),!0):_(),g}(e.agentIdentifier,y)),void 0===e.exposed&&(e.exposed=D),m=!0}},1926:(e,t,n)=>{n.nc=(()=>{try{return document?.currentScript?.nonce}catch(e){}return""})()},3325:(e,t,n)=>{"use strict";n.d(t,{D:()=>r,p:()=>i});const r={ajax:"ajax",jserrors:"jserrors",metrics:"metrics",pageAction:"page_action",pageViewEvent:"page_view_event",pageViewTiming:"page_view_timing",sessionReplay:"session_replay",sessionTrace:"session_trace",spa:"spa"},i={[r.pageViewEvent]:1,[r.pageViewTiming]:2,[r.metrics]:3,[r.jserrors]:4,[r.ajax]:5,[r.sessionTrace]:6,[r.pageAction]:7,[r.spa]:8,[r.sessionReplay]:9}}},r={};function i(e){var t=r[e];if(void 0!==t)return t.exports;var a=r[e]={exports:{}};return n[e](a,a.exports,i),a.exports}i.m=n,i.d=(e,t)=>{for(var n in t)i.o(t,n)&&!i.o(e,n)&&Object.defineProperty(e,n,{enumerable:!0,get:t[n]})},i.f={},i.e=e=>Promise.all(Object.keys(i.f).reduce(((t,n)=>(i.f[n](e,t),t)),[])),i.u=e=>"nr-rum-1.248.0.min.js",i.o=(e,t)=>Object.prototype.hasOwnProperty.call(e,t),e={},t="NRBA-1.248.0.PROD:",i.l=(n,r,a,o)=>{if(e[n])e[n].push(r);else{var s,c;if(void 0!==a)for(var u=document.getElementsByTagName("script"),d=0;d<u.length;d++){var l=u[d];if(l.getAttribute("src")==n||l.getAttribute("data-webpack")==t+a){s=l;break}}s||(c=!0,(s=document.createElement("script")).charset="utf-8",s.timeout=120,i.nc&&s.setAttribute("nonce",i.nc),s.setAttribute("data-webpack",t+a),s.src=n,0!==s.src.indexOf(window.location.origin+"/")&&(s.crossOrigin="anonymous"),s.integrity=i.sriHashes[o],s.crossOrigin="anonymous"),e[n]=[r];var f=(t,r)=>{s.onerror=s.onload=null,clearTimeout(g);var i=e[n];if(delete e[n],s.parentNode&&s.parentNode.removeChild(s),i&&i.forEach((e=>e(r))),t)return t(r)},g=setTimeout(f.bind(null,void 0,{type:"timeout",target:s}),12e4);s.onerror=f.bind(null,s.onerror),s.onload=f.bind(null,s.onload),c&&document.head.appendChild(s)}},i.r=e=>{"undefined"!=typeof Symbol&&Symbol.toStringTag&&Object.defineProperty(e,Symbol.toStringTag,{value:"Module"}),Object.defineProperty(e,"__esModule",{value:!0})},i.p="https://web.archive.org/web/20231128043227/https://js-agent.newrelic.com/",i.sriHashes={75:"sha512-5mWtMwj7hrXT5aUkfvBtjH6FJXsR+zdeMBfc721nzrOx36xa23yTrCB1VVOAQa+zIioAbWPW4m7UsPp7hW1WPw=="},(()=>{var e={50:0,832:0};i.f.j=(t,n)=>{var r=i.o(e,t)?e[t]:void 0;if(0!==r)if(r)n.push(r[2]);else{var a=new Promise(((n,i)=>r=e[t]=[n,i]));n.push(r[2]=a);var o=i.p+i.u(t),s=new Error;i.l(o,(n=>{if(i.o(e,t)&&(0!==(r=e[t])&&(e[t]=void 0),r)){var a=n&&("load"===n.type?"missing":n.type),o=n&&n.target&&n.target.src;s.message="Loading chunk "+t+" failed.\n("+a+": "+o+")",s.name="ChunkLoadError",s.type=a,s.request=o,r[1](s)}}),"chunk-"+t,t)}};var t=(t,n)=>{var r,a,[o,s,c]=n,u=0;if(o.some((t=>0!==e[t]))){for(r in s)i.o(s,r)&&(i.m[r]=s[r]);if(c)c(i)}for(t&&t(n);u<o.length;u++)a=o[u],i.o(e,a)&&e[a]&&e[a][0](),e[a]=0},n=self["webpackChunk:NRBA-1.248.0.PROD"]=self["webpackChunk:NRBA-1.248.0.PROD"]||[];n.forEach(t.bind(null,0)),n.push=t.bind(null,n.push.bind(n))})(),(()=>{"use strict";i(1926);var e=i(50);class t{addPageAction(t,n){(0,e.Z)("Call to agent api addPageAction failed. The page action feature is not currently initialized.")}setPageViewName(t,n){(0,e.Z)("Call to agent api setPageViewName failed. The page view feature is not currently initialized.")}setCustomAttribute(t,n,r){(0,e.Z)("Call to agent api setCustomAttribute failed. The js errors feature is not currently initialized.")}noticeError(t,n){(0,e.Z)("Call to agent api noticeError failed. The js errors feature is not currently initialized.")}setUserId(t){(0,e.Z)("Call to agent api setUserId failed. The js errors feature is not currently initialized.")}setApplicationVersion(t){(0,e.Z)("Call to agent api setApplicationVersion failed. The agent is not currently initialized.")}setErrorHandler(t){(0,e.Z)("Call to agent api setErrorHandler failed. The js errors feature is not currently initialized.")}finished(t){(0,e.Z)("Call to agent api finished failed. The page action feature is not currently initialized.")}addRelease(t,n){(0,e.Z)("Call to agent api addRelease failed. The js errors feature is not currently initialized.")}start(t){(0,e.Z)("Call to agent api addRelease failed. The agent is not currently initialized.")}recordReplay(){(0,e.Z)("Call to agent api recordReplay failed. The agent is not currently initialized.")}pauseReplay(){(0,e.Z)("Call to agent api pauseReplay failed. The agent is not currently initialized.")}}var n=i(3325),r=i(234);const a=Object.values(n.D);function o(e){const t={};return a.forEach((n=>{t[n]=function(e,t){return!1!==(0,r.Mt)(t,"".concat(e,".enabled"))}(n,e)})),t}var s=i(7530);var c=i(8e3),u=i(5938),d=i(3960),l=i(385);class f extends u.W{constructor(e,t,n){let i=!(arguments.length>3&&void 0!==arguments[3])||arguments[3];super(e,t,n),this.auto=i,this.abortHandler=void 0,this.featAggregate=void 0,this.onAggregateImported=void 0,!1===(0,r.Mt)(this.agentIdentifier,"".concat(this.featureName,".autoStart"))&&(this.auto=!1),this.auto&&(0,c.R)(e,n)}importAggregator(){let t=arguments.length>0&&void 0!==arguments[0]?arguments[0]:{};if(this.featAggregate)return;if(!this.auto)return void this.ee.on("".concat(this.featureName,"-opt-in"),(()=>{(0,c.R)(this.agentIdentifier,this.featureName),this.auto=!0,this.importAggregator()}));const n=l.il&&!0===(0,r.Mt)(this.agentIdentifier,"privacy.cookies_enabled");let a;this.onAggregateImported=new Promise((e=>{a=e}));const o=async()=>{let r;try{if(n){const{setupAgentSession:e}=await i.e(75).then(i.bind(i,3228));r=e(this.agentIdentifier)}}catch(t){(0,e.Z)("A problem occurred when starting up session manager. This page will not start or extend any session.",t)}try{if(!this.shouldImportAgg(this.featureName,r))return(0,c.L)(this.agentIdentifier,this.featureName),void a(!1);const{lazyFeatureLoader:e}=await i.e(75).then(i.bind(i,8582)),{Aggregate:n}=await e(this.featureName,"aggregate");this.featAggregate=new n(this.agentIdentifier,this.aggregator,t),a(!0)}catch(t){(0,e.Z)("Downloading and initializing ".concat(this.featureName," failed..."),t),this.abortHandler?.(),(0,c.L)(this.agentIdentifier,this.featureName),a(!1)}};l.il?(0,d.b2)((()=>o()),!0):o()}shouldImportAgg(e,t){return e!==n.D.sessionReplay||!!r.Yu.MO&&(!1!==(0,r.Mt)(this.agentIdentifier,"session_trace.enabled")&&(!!t?.isNew||!!t?.state.sessionReplayMode))}}var g=i(7633);class p extends f{static featureName=g.t;constructor(e,t){let n=!(arguments.length>2&&void 0!==arguments[2])||arguments[2];super(e,t,g.t,n),this.importAggregator()}}var h=i(1117),v=i(1284);class m extends h.w{constructor(e){super(e),this.aggregatedData={}}store(e,t,n,r,i){var a=this.getBucket(e,t,n,i);return a.metrics=function(e,t){t||(t={count:0});return t.count+=1,(0,v.D)(e,(function(e,n){t[e]=b(n,t[e])})),t}(r,a.metrics),a}merge(e,t,n,r,i){var a=this.getBucket(e,t,r,i);if(a.metrics){var o=a.metrics;o.count+=n.count,(0,v.D)(n,(function(e,t){if("count"!==e){var r=o[e],i=n[e];i&&!i.c?o[e]=b(i.t,r):o[e]=function(e,t){if(!t)return e;t.c||(t=y(t.t));return t.min=Math.min(e.min,t.min),t.max=Math.max(e.max,t.max),t.t+=e.t,t.sos+=e.sos,t.c+=e.c,t}(i,o[e])}}))}else a.metrics=n}storeMetric(e,t,n,r){var i=this.getBucket(e,t,n);return i.stats=b(r,i.stats),i}getBucket(e,t,n,r){this.aggregatedData[e]||(this.aggregatedData[e]={});var i=this.aggregatedData[e][t];return i||(i=this.aggregatedData[e][t]={params:n||{}},r&&(i.custom=r)),i}get(e,t){return t?this.aggregatedData[e]&&this.aggregatedData[e][t]:this.aggregatedData[e]}take(e){for(var t={},n="",r=!1,i=0;i<e.length;i++)t[n=e[i]]=w(this.aggregatedData[n]),t[n].length&&(r=!0),delete this.aggregatedData[n];return r?t:null}}function b(e,t){return null==e?function(e){e?e.c++:e={c:1};return e}(t):t?(t.c||(t=y(t.t)),t.c+=1,t.t+=e,t.sos+=e*e,e>t.max&&(t.max=e),e<t.min&&(t.min=e),t):{t:e}}function y(e){return{t:e,min:e,max:e,sos:e*e,c:1}}function w(e){return"object"!=typeof e?[]:(0,v.D)(e,A)}function A(e,t){return t}var _=i(8632),x=i(4402),D=i(4351);var k=i(5546),E=i(7956),j=i(3239),T=i(7894),R=i(9251);class S extends f{static featureName=R.t;constructor(e,t){let n=!(arguments.length>2&&void 0!==arguments[2])||arguments[2];super(e,t,R.t,n),l.il&&((0,E.N)((()=>(0,k.p)("docHidden",[(0,T.z)()],void 0,R.t,this.ee)),!0),(0,j.bP)("pagehide",(()=>(0,k.p)("winPagehide",[(0,T.z)()],void 0,R.t,this.ee))),this.importAggregator())}}var I=i(3081);class C extends f{static featureName=I.t9;constructor(e,t){let n=!(arguments.length>2&&void 0!==arguments[2])||arguments[2];super(e,t,I.t9,n),this.importAggregator()}}new class extends t{constructor(t){let n=arguments.length>1&&void 0!==arguments[1]?arguments[1]:(0,x.ky)(16);super(),l._A?(this.agentIdentifier=n,this.sharedAggregator=new m({agentIdentifier:this.agentIdentifier}),this.features={},(0,_.h5)(n,this),this.desiredFeatures=new Set(t.features||[]),this.desiredFeatures.add(p),(0,s.j)(this,t,t.loaderType||"agent"),this.run()):(0,e.Z)("Failed to initial the agent. Could not determine the runtime environment.")}get config(){return{info:(0,r.C5)(this.agentIdentifier),init:(0,r.P_)(this.agentIdentifier),loader_config:(0,r.DL)(this.agentIdentifier),runtime:(0,r.OP)(this.agentIdentifier)}}run(){try{const t=o(this.agentIdentifier),r=[...this.desiredFeatures];r.sort(((e,t)=>n.p[e.featureName]-n.p[t.featureName])),r.forEach((r=>{if(t[r.featureName]||r.featureName===n.D.pageViewEvent){const i=function(e){switch(e){case n.D.ajax:return[n.D.jserrors];case n.D.sessionTrace:return[n.D.ajax,n.D.pageViewEvent];case n.D.sessionReplay:return[n.D.sessionTrace];case n.D.pageViewTiming:return[n.D.pageViewEvent];default:return[]}}(r.featureName);i.every((e=>t[e]))||(0,e.Z)("".concat(r.featureName," is enabled but one or more dependent features has been disabled (").concat((0,D.P)(i),"). This may cause unintended consequences or missing data...")),this.features[r.featureName]=new r(this.agentIdentifier,this.sharedAggregator)}}))}catch(t){(0,e.Z)("Failed to initialize all enabled instrument classes (agent aborted) -",t);for(const e in this.features)this.features[e].abortHandler?.();const n=(0,_.fP)();return delete n.initializedAgents[this.agentIdentifier]?.api,delete n.initializedAgents[this.agentIdentifier]?.features,delete this.sharedAggregator,n.ee?.abort(),delete n.ee?.get(this.agentIdentifier),!1}}addToTrace(t){(0,e.Z)("Call to agent api addToTrace failed. The session trace feature is not currently initialized.")}setCurrentRouteName(t){(0,e.Z)("Call to agent api setCurrentRouteName failed. The spa feature is not currently initialized.")}interaction(){(0,e.Z)("Call to agent api interaction failed. The spa feature is not currently initialized.")}}({features:[p,S,C],loaderType:"lite"})})()})();</script> <noscript><style>form.antibot * :not(.antibot-message) { display: none !important; }</style> </noscript><script async src="https://web.archive.org/web/20231128043227js_/https://www.googletagmanager.com/gtag/js?id=G-HEQ0YF2VYL"></script> <script>window.dataLayer = window.dataLayer || [];function gtag(){dataLayer.push(arguments)};gtag("js", new Date());gtag("set", "developer_id.dMDhkMT", true);gtag('set', {'cookie_flags': 'SameSite=None;Secure', 'cookie_domain': 'www.nist.gov'});gtag("config", "G-HEQ0YF2VYL", {"groups":"default","page_placeholder":"PLACEHOLDER_page_location","link_attribution":true,"allow_ad_personalization_signals":false});gtag("event", "custom", {"node_title":"NIST Center for Neutron Research","node_id":"341086","content_type":"Laboratory\/Organizational Unit"});</script> <meta name="description" content="The NIST Center for Neutron Research is a national resource for industry, universities, and government agencies."/> <link rel="canonical" href="https://web.archive.org/web/20231128043227/https://www.nist.gov/ncnr"/> <link rel="shortlink" href="https://web.archive.org/web/20231128043227/https://www.nist.gov/node/341086"/> <meta name="citation_title" content="NIST Center for Neutron Research | NIST"/> <meta property="og:site_name" content="NIST"/> <meta property="og:type" content="Article"/> <meta property="og:url" content="https://web.archive.org/web/20231128043227/https://www.nist.gov/ncnr"/> <meta property="og:title" content="NIST Center for Neutron Research"/> <meta property="og:description" content="The NIST Center for Neutron Research is a national resource for industry, universities, and government agencies."/> <meta property="article:published_time" content="2015-04-28T15:20-04:00"/> <meta property="article:modified_time" content="2023-11-02T15:42-04:00"/> <meta name="dcterms.title" content="NIST Center for Neutron Research"/> <meta name="dcterms.description" content="The NIST Center for Neutron Research is a national resource for industry, universities, and government agencies."/> <meta name="dcterms.date" content="2015-04-28T15:20-04:00"/> <meta name="dcterms.type" content="text"/> <meta name="dcterms.format" content="text/html"/> <meta name="dcterms.identifier" content="https://www.nist.gov/ncnr"/> <meta name="dcterms.source" content="NIST"/> <meta name="dcterms.created" content="2015-04-28T15:20-04:00"/> <meta name="dcterms.modified" content="2023-11-02T15:42-04:00"/> <meta name="twitter:card" content="summary_large_image"/> <meta name="twitter:description" content="The NIST Center for Neutron Research is a national resource for industry, universities, and government agencies."/> <meta name="twitter:site" content="NIST"/> <meta name="twitter:title" content="NIST Center for Neutron Research"/> <meta name="twitter:url" content="https://web.archive.org/web/20231128043227im_/https://www.nist.gov/ncnr"/> <meta name="google-site-verification" content="QMu0ODkER3rN5hLcMLqNVf7e3bkjYsNLTuhqfH48jCA"/> <meta name="Generator" content="Drupal 10 (https://www.drupal.org)"/> <meta name="MobileOptimized" content="width"/> <meta name="HandheldFriendly" content="true"/> <meta name="viewport" content="width=device-width, initial-scale=1.0"/> <meta name="nist_search_modified" class="elastic" content="2023-11-02T15:42:00-04:00"/> <script type="application/ld+json">{ "@context": "https://web.archive.org/web/20231128043227/https://schema.org", "@graph": [ { "@type": "Article", "headline": "NIST Center for Neutron Research | NIST", "description": "The NIST Center for Neutron Research is a national resource for industry, universities, and government agencies.", "datePublished": "2015-04-28T15:20-04:00", "dateModified": "2023-11-02T15:42-04:00" } ] }</script> <meta name="nist_search_bundle" class="elastic" content="laboratory_organizational_unit"/> <link rel="icon" href="/web/20231128043227im_/https://www.nist.gov/themes/custom/nist_www/favicon.ico" type="image/vnd.microsoft.icon"/> <title>NIST Center for Neutron Research | NIST</title> <link rel="stylesheet" media="all" href="/web/20231128043227cs_/https://www.nist.gov/sites/default/files/css/css_UrPxtosE0KjcGdsozKaHN4oFNt2iqvKL8y6_YMPICS4.css?delta=0&amp;language=en&amp;theme=nist_www&amp;include=eJx1kYGuwyAIRX_IVz_JUMuUzYoTXNe_X9utabPlJYbA4QZu0HNFe703rLPpwd-c8vKKPeXuKv-2yHM2gTkkdJAhzUpe7DcwmURdonwjdRdKitX-IhfgLRRSpLFUfqD9BquZjWnEERcPnHqobuTBDiTQL2vXoUZmURwXr4Kb3obEPaRz_vcZZSPCgHUv3TRNZ_WpXiX41HWBHWorkLpPaQpUCBVKlL1zkK7l0vpEEnEwD8JJ7Ba7xXVLaPzxBx1nj-ZCwUNR4rxf6yBvy3hvkFxEClEPlyP5yuuxXmYwua8"/> <link rel="stylesheet" media="all" href="/web/20231128043227cs_/https://www.nist.gov/sites/default/files/css/css_6prwlieMvitJqVLptJ59w_NxX2prM0abXhYVoH12prk.css?delta=1&amp;language=en&amp;theme=nist_www&amp;include=eJx1kYGuwyAIRX_IVz_JUMuUzYoTXNe_X9utabPlJYbA4QZu0HNFe703rLPpwd-c8vKKPeXuKv-2yHM2gTkkdJAhzUpe7DcwmURdonwjdRdKitX-IhfgLRRSpLFUfqD9BquZjWnEERcPnHqobuTBDiTQL2vXoUZmURwXr4Kb3obEPaRz_vcZZSPCgHUv3TRNZ_WpXiX41HWBHWorkLpPaQpUCBVKlL1zkK7l0vpEEnEwD8JJ7Ba7xXVLaPzxBx1nj-ZCwUNR4rxf6yBvy3hvkFxEClEPlyP5yuuxXmYwua8"/> <link rel="stylesheet" media="print" href="/web/20231128043227cs_/https://www.nist.gov/sites/default/files/css/css_6MuKXqcH69mMwmOSjiD2G_c6UXIqUTZ1TRnur95k7Qk.css?delta=2&amp;language=en&amp;theme=nist_www&amp;include=eJx1kYGuwyAIRX_IVz_JUMuUzYoTXNe_X9utabPlJYbA4QZu0HNFe703rLPpwd-c8vKKPeXuKv-2yHM2gTkkdJAhzUpe7DcwmURdonwjdRdKitX-IhfgLRRSpLFUfqD9BquZjWnEERcPnHqobuTBDiTQL2vXoUZmURwXr4Kb3obEPaRz_vcZZSPCgHUv3TRNZ_WpXiX41HWBHWorkLpPaQpUCBVKlL1zkK7l0vpEEnEwD8JJ7Ba7xXVLaPzxBx1nj-ZCwUNR4rxf6yBvy3hvkFxEClEPlyP5yuuxXmYwua8"/> <link rel="stylesheet" media="all" href="/web/20231128043227cs_/https://www.nist.gov/sites/default/files/css/css_zxDJPMpCfrT8NQEavjogRlrVmShwu9oesPd2F7606bk.css?delta=3&amp;language=en&amp;theme=nist_www&amp;include=eJx1kYGuwyAIRX_IVz_JUMuUzYoTXNe_X9utabPlJYbA4QZu0HNFe703rLPpwd-c8vKKPeXuKv-2yHM2gTkkdJAhzUpe7DcwmURdonwjdRdKitX-IhfgLRRSpLFUfqD9BquZjWnEERcPnHqobuTBDiTQL2vXoUZmURwXr4Kb3obEPaRz_vcZZSPCgHUv3TRNZ_WpXiX41HWBHWorkLpPaQpUCBVKlL1zkK7l0vpEEnEwD8JJ7Ba7xXVLaPzxBx1nj-ZCwUNR4rxf6yBvy3hvkFxEClEPlyP5yuuxXmYwua8"/> <script src="/web/20231128043227js_/https://www.nist.gov/sites/default/files/js/js_3ssAdmvsW-btol8ydZT2eloQN8l11yuGacOobfI1-_0.js?scope=header&amp;delta=0&amp;language=en&amp;theme=nist_www&amp;include=eJx1kYGuwyAIRX_IVz_JUMuUzYoTXNe_X9utabPlJYbA4QZu0HNFe703rLPpwd-c8vKKPeXuKv-2yHM2gTkkdJAhzUpe7DcwmURdonwjdRdKitX-IhfgLRRSpLFUfqD9BquZjWnEERcPnHqobuTBDiTQL2vXoUZmURwXr4Kb3obEPaRz_vcZZSPCgHUv3TRNZ_WpXiX41HWBHWorkLpPaQpUCBVKlL1zkK7l0vpEEnEwD8JJ7Ba7xXVLaPzxBx1nj-ZCwUNR4rxf6yBvy3hvkFxEClEPlyP5yuuxXmYwua8"></script> </head> <body class="node-341086"> <a href="#main-content" class="visually-hidden focusable" data-elastic-exclude> Skip to main content </a> <div class="dialog-off-canvas-main-canvas" data-off-canvas-main-canvas> <!-- nist-index-ignore-start --> <section data-elastic-exclude class="usa-banner" aria-label="Official government website"> <div class="usa-accordion"> <header class="usa-banner__header"> <div class="usa-banner__inner"> <div class="grid-col-auto"> <img class="usa-banner__header-flag" src="/web/20231128043227im_/https://www.nist.gov/libraries/nist-component-library/dist/img/us_flag_small.png" alt="U.S. flag"> </div> <div class="grid-col-fill tablet:grid-col-auto"> <p class="usa-banner__header-text">An official website of the United States government</p> <p class="usa-banner__header-action" aria-hidden="true">Here’s how you know</p> </div> <button class="usa-accordion__button usa-banner__button" aria-expanded="false" aria-controls="gov-banner-default"> <span class="usa-banner__button-text">Here’s how you know</span> </button> </div> </header> <div class="usa-banner__content usa-accordion__content" id="gov-banner-default"> <div class="grid-row grid-gap-lg"> <div class="usa-banner__guidance tablet:grid-col-6"> <img class="usa-banner__icon usa-media-block__img" src="/web/20231128043227im_/https://www.nist.gov/libraries/nist-component-library/dist/img/icon-dot-gov.svg" role="img" alt="" aria-hidden="true"> <div class="usa-media-block__body"> <p> <strong>Official websites use .gov</strong> <br/> A <strong>.gov</strong> website belongs to an official government organization in the United States. </p> </div> </div> <div class="usa-banner__guidance tablet:grid-col-6"> <img class="usa-banner__icon usa-media-block__img" src="/web/20231128043227im_/https://www.nist.gov/libraries/nist-component-library/dist/img/icon-https.svg" role="img" alt="" aria-hidden="true"> <div class="usa-media-block__body"> <p> <strong>Secure .gov websites use HTTPS</strong> <br/> A <strong>lock</strong> ( <span class="icon-lock"> <svg xmlns="http://www.w3.org/2000/svg" width="52" height="64" viewbox="0 0 52 64" class="usa-banner__lock-image" role="img" aria-labelledby="banner-lock-title banner-lock-description" focusable="false"> <title id="banner-lock-title">Lock</title> <desc id="banner-lock-description">A locked padlock</desc><path fill="#000000" fill-rule="evenodd" d="M26 0c10.493 0 19 8.507 19 19v9h3a4 4 0 0 1 4 4v28a4 4 0 0 1-4 4H4a4 4 0 0 1-4-4V32a4 4 0 0 1 4-4h3v-9C7 8.507 15.507 0 26 0zm0 8c-5.979 0-10.843 4.77-10.996 10.712L15 19v9h22v-9c0-6.075-4.925-11-11-11z"/></svg> </span> ) or <strong>https://</strong> means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites. </p> </div> </div> </div> </div> </div> </section> <!-- nist-index-ignore-end --> <div data-elastic-exclude> <!-- nist-index-ignore-start --> <div class="nist-print-header" style="display:none;"> <p class="nist-print-header__url">https://www.nist.gov/ncnr</p> <img class="nist-print-header__logo" width="289" height="38" src="/web/20231128043227im_/https://www.nist.gov/libraries/nist-component-library/dist/img/logo/nist_logo_sidestack.svg" alt="National Institute of Standards and Technology"/> </div> <div class="usa-overlay"></div> <header class="usa-header nist-header--www nist-header--minimal" role="banner"> <div class="usa-navbar"> <div class="usa-logo flex-fill"> <a href="/web/20231128043227/https://www.nist.gov/" title="National Institute of Standards and Technology" aria-label="Home"> <img src="/web/20231128043227im_/https://www.nist.gov/libraries/nist-component-library/dist/img/logo/logo.svg" alt="National Institute of Standards and Technology" width="300px" height="80px"/> </a> </div> <div class="usa-header__right grid-row flex-auto"> <div class="grid-col-fill nist-header__search-group"> <form class="usa-search usa-search--small" accept-charset="UTF-8" action="/web/20231128043227/https://www.nist.gov/search" id="search_form" method="get"> <div role="search"> <label class="usa-sr-only" for="search-form">Search NIST</label> <input class="usa-input" id="search-form" type="search" name="s" placeholder="Search NIST" required="" maxlength="128"> <button class="usa-button" type="submit"><img src="/web/20231128043227im_/https://www.nist.gov/libraries/nist-component-library/dist/img/usa-icons-bg/search--white.svg" class="usa-search__submit-icon" alt="Search"></button> </div> </form> </div> <div class="grid-col-auto padding-left-1"> <button class="usa-menu-btn">Menu</button> </div> </div> </div> <nav aria-label="Primary navigation" class="usa-nav"> <div class="usa-nav__inner"> <button class="usa-nav__close">Close</button> <ul class="usa-nav__primary usa-accordion"> <li class="usa-nav__primary-item"> <button class="usa-accordion__button usa-nav__link" aria-expanded="false" aria-controls="primary_menu-1"><span>Topics</span></button> <div id="primary_menu-1" class="usa-nav__submenu usa-megamenu"> <div class="grid-row"> <div class="tablet:grid-col-fill"><ul class="usa-nav__submenu-list"> <li class="usa-nav__submenu-item"> <a href="/web/20231128043227/https://www.nist.gov/topics" class="usa-nav__link">All Topics</a> </li> <li class="usa-nav__submenu-item"> <a href="/web/20231128043227/https://www.nist.gov/advanced-communications" class="usa-nav__link">Advanced communications</a> </li> <li class="usa-nav__submenu-item"> <a href="/web/20231128043227/https://www.nist.gov/artificial-intelligence" class="usa-nav__link">Artificial intelligence</a> </li> <li class="usa-nav__submenu-item"> <a href="/web/20231128043227/https://www.nist.gov/bioscience" class="usa-nav__link">Bioscience</a> </li> <li class="usa-nav__submenu-item"> <a href="/web/20231128043227/https://www.nist.gov/buildings-construction" class="usa-nav__link">Buildings and construction</a> </li> <li class="usa-nav__submenu-item"> <a href="/web/20231128043227/https://www.nist.gov/chemistry" class="usa-nav__link">Chemistry</a> </li> <li class="usa-nav__submenu-item"> <a href="/web/20231128043227/https://www.nist.gov/climate" class="usa-nav__link">Climate</a> </li> <li class="usa-nav__submenu-item"> <a href="/web/20231128043227/https://www.nist.gov/cybersecurity" class="usa-nav__link">Cybersecurity</a> </li> <li class="usa-nav__submenu-item"> <a href="/web/20231128043227/https://www.nist.gov/electronics" class="usa-nav__link">Electronics</a> </li> <li class="usa-nav__submenu-item"> <a href="/web/20231128043227/https://www.nist.gov/energy" class="usa-nav__link">Energy</a> </li> </ul></div><div class="column-break tablet:grid-col-fill"><ul class="usa-nav__submenu-list"> <li class="usa-nav__submenu-item"> <a href="/web/20231128043227/https://www.nist.gov/environment" class="usa-nav__link">Environment</a> </li> <li class="usa-nav__submenu-item"> <a href="/web/20231128043227/https://www.nist.gov/fire" class="usa-nav__link">Fire</a> </li> <li class="usa-nav__submenu-item"> <a href="/web/20231128043227/https://www.nist.gov/forensic-science" class="usa-nav__link">Forensic science</a> </li> <li class="usa-nav__submenu-item"> <a href="/web/20231128043227/https://www.nist.gov/health" class="usa-nav__link">Health</a> </li> <li class="usa-nav__submenu-item"> <a href="/web/20231128043227/https://www.nist.gov/information-technology" class="usa-nav__link">Information technology</a> </li> <li class="usa-nav__submenu-item"> <a href="/web/20231128043227/https://www.nist.gov/infrastructure" class="usa-nav__link">Infrastructure</a> </li> <li class="usa-nav__submenu-item"> <a href="/web/20231128043227/https://www.nist.gov/manufacturing" class="usa-nav__link">Manufacturing</a> </li> <li class="usa-nav__submenu-item"> <a href="/web/20231128043227/https://www.nist.gov/materials" class="usa-nav__link">Materials</a> </li> <li class="usa-nav__submenu-item"> <a href="/web/20231128043227/https://www.nist.gov/mathematics-statistics" class="usa-nav__link">Mathematics and statistics</a> </li> </ul></div><div class="column-break tablet:grid-col-fill"><ul class="usa-nav__submenu-list"> <li class="usa-nav__submenu-item"> <a href="/web/20231128043227/https://www.nist.gov/metrology" class="usa-nav__link">Metrology</a> </li> <li class="usa-nav__submenu-item"> <a href="/web/20231128043227/https://www.nist.gov/nanotechnology" class="usa-nav__link">Nanotechnology</a> </li> <li class="usa-nav__submenu-item"> <a href="/web/20231128043227/https://www.nist.gov/neutron-research" class="usa-nav__link">Neutron research</a> </li> <li class="usa-nav__submenu-item"> <a href="/web/20231128043227/https://www.nist.gov/performance-excellence" class="usa-nav__link">Performance excellence</a> </li> <li class="usa-nav__submenu-item"> <a href="/web/20231128043227/https://www.nist.gov/physics" class="usa-nav__link">Physics</a> </li> <li class="usa-nav__submenu-item"> <a href="/web/20231128043227/https://www.nist.gov/public-safety" class="usa-nav__link">Public safety</a> </li> <li class="usa-nav__submenu-item"> <a href="/web/20231128043227/https://www.nist.gov/resilience" class="usa-nav__link">Resilience</a> </li> <li class="usa-nav__submenu-item"> <a href="/web/20231128043227/https://www.nist.gov/standards" class="usa-nav__link">Standards</a> </li> <li class="usa-nav__submenu-item"> <a href="/web/20231128043227/https://www.nist.gov/transportation" class="usa-nav__link">Transportation</a> </li> </ul> </div> </div> </div> </li> <li class="usa-nav__primary-item"> <a class="usa-nav__link" href="/web/20231128043227/https://www.nist.gov/publications">Publications</a> </li> <li class="usa-nav__primary-item"> <button class="usa-accordion__button usa-nav__link usa-current" aria-expanded="false" aria-controls="primary_menu-3"><span>Labs &amp; Major Programs</span></button> <div id="primary_menu-3" class="usa-nav__submenu usa-megamenu"> <div class="grid-row"> <div class="tablet:grid-col-fill"><ul class="usa-nav__submenu-list"> <li class="usa-nav__submenu-item"> <a href="/web/20231128043227/https://www.nist.gov/labs-major-programs/laboratories" class="usa-nav__link">Laboratories</a> <ul class="usa-nav__submenu-list"> <li> <a href="/web/20231128043227/https://www.nist.gov/ctl" class="usa-nav__link">Communications Technology Laboratory</a> </li> <li> <a href="/web/20231128043227/https://www.nist.gov/el" class="usa-nav__link">Engineering Laboratory</a> </li> <li> <a href="/web/20231128043227/https://www.nist.gov/itl" class="usa-nav__link">Information Technology Laboratory</a> </li> <li> <a href="/web/20231128043227/https://www.nist.gov/mml" class="usa-nav__link">Material Measurement Laboratory</a> </li> <li> <a href="/web/20231128043227/https://www.nist.gov/pml" class="usa-nav__link">Physical Measurement Laboratory</a> </li> </ul> </li> </ul></div><div class="column-break tablet:grid-col-fill"><ul class="usa-nav__submenu-list"> <li class="usa-nav__submenu-item"> <a href="/web/20231128043227/https://www.nist.gov/labs-major-programs/user-facilities" class="usa-nav__link usa-current">User Facilities</a> <ul class="usa-nav__submenu-list"> <li> <a href="/web/20231128043227/https://www.nist.gov/ncnr" class="usa-nav__link usa-current">NIST Center for Neutron Research</a> </li> <li> <a href="/web/20231128043227/https://www.nist.gov/cnst" class="usa-nav__link">CNST NanoFab</a> </li> </ul> </li> <li class="usa-nav__submenu-item"> <a href="/web/20231128043227/https://www.nist.gov/labs-major-programs/research-test-beds" class="usa-nav__link">Research Test Beds</a> </li> <li class="usa-nav__submenu-item"> <a href="/web/20231128043227/https://www.nist.gov/laboratories/projects-programs" class="usa-nav__link">Research Projects</a> </li> <li class="usa-nav__submenu-item"> <a href="/web/20231128043227/https://www.nist.gov/laboratories/tools-instruments" class="usa-nav__link">Tools &amp; Instruments</a> </li> </ul></div><div class="column-break tablet:grid-col-fill"><ul class="usa-nav__submenu-list"> <li class="usa-nav__submenu-item"> <a href="/web/20231128043227/https://www.nist.gov/labs-major-programs/major-programs" class="usa-nav__link">Major Programs</a> <ul class="usa-nav__submenu-list"> <li> <a href="/web/20231128043227/https://www.nist.gov/baldrige" class="usa-nav__link">Baldrige Performance Excellence Program</a> </li> <li> <a href="/web/20231128043227/https://www.nist.gov/chips" class="usa-nav__link">CHIPS for America Initiative</a> </li> <li> <a href="/web/20231128043227/https://www.nist.gov/mep" class="usa-nav__link">Manufacturing Extension Partnership (MEP)</a> </li> <li> <a href="/web/20231128043227/https://www.nist.gov/oam" class="usa-nav__link">Office of Advanced Manufacturing</a> </li> <li> <a href="/web/20231128043227/https://www.nist.gov/spo" class="usa-nav__link">Special Programs Office</a> </li> <li> <a href="/web/20231128043227/https://www.nist.gov/tpo" class="usa-nav__link">Technology Partnerships Office</a> </li> </ul> </li> </ul> </div> </div> </div> </li> <li class="usa-nav__primary-item"> <button class="usa-accordion__button usa-nav__link" aria-expanded="false" aria-controls="primary_menu-4"><span>Services &amp; Resources</span></button> <div id="primary_menu-4" class="usa-nav__submenu usa-megamenu"> <div class="grid-row"> <div class="tablet:grid-col-fill"><ul class="usa-nav__submenu-list"> <li class="usa-nav__submenu-item"> <a href="/web/20231128043227/https://www.nist.gov/services-resources/standards-and-measurements" class="usa-nav__link">Standards and Measurements</a> <ul class="usa-nav__submenu-list"> <li> <a href="/web/20231128043227/https://www.nist.gov/calibrations" class="usa-nav__link">Calibration Services</a> </li> <li> <a href="/web/20231128043227/https://www.nist.gov/nvlap" class="usa-nav__link">Laboratory Accreditation (NVLAP)</a> </li> <li> <a href="/web/20231128043227/https://www.nist.gov/nist-quality-system" class="usa-nav__link">Quality System</a> </li> <li> <a href="/web/20231128043227/https://www.nist.gov/srm" class="usa-nav__link">Standard Reference Materials (SRMs)</a> </li> <li> <a href="/web/20231128043227/https://www.nist.gov/standardsgov" class="usa-nav__link">Standards.gov</a> </li> <li> <a href="/web/20231128043227/https://www.nist.gov/pml/time-and-frequency-division/time-services" class="usa-nav__link">Time Services</a> </li> <li> <a href="/web/20231128043227/https://www.nist.gov/pml/owm" class="usa-nav__link">Office of Weights and Measures</a> </li> </ul> </li> </ul></div><div class="column-break tablet:grid-col-fill"><ul class="usa-nav__submenu-list"> <li class="usa-nav__submenu-item"> <a href="/web/20231128043227/https://www.nist.gov/services-resources/software" class="usa-nav__link">Software</a> </li> <li class="usa-nav__submenu-item"> <a href="/web/20231128043227/https://www.nist.gov/data" class="usa-nav__link">Data</a> <ul class="usa-nav__submenu-list"> <li> <a href="https://web.archive.org/web/20231128043227/https://webbook.nist.gov/chemistry/" class="usa-nav__link">Chemistry WebBook</a> </li> <li> <a href="https://web.archive.org/web/20231128043227/https://nvd.nist.gov/" class="usa-nav__link">National Vulnerability Database</a> </li> <li> <a href="/web/20231128043227/https://www.nist.gov/pml/productsservices/physical-reference-data" class="usa-nav__link">Physical Reference Data</a> </li> <li> <a href="/web/20231128043227/https://www.nist.gov/srd" class="usa-nav__link">Standard Reference Data (SRD)</a> </li> </ul> </li> <li class="usa-nav__submenu-item"> <a href="https://web.archive.org/web/20231128043227/https://www.nist.gov/shop" class="usa-nav__link">Storefront</a> </li> <li class="usa-nav__submenu-item"> <a href="/web/20231128043227/https://www.nist.gov/tpo" class="usa-nav__link">License &amp; Patents</a> </li> </ul></div><div class="column-break tablet:grid-col-fill"><ul class="usa-nav__submenu-list"> <li class="usa-nav__submenu-item"> <a href="https://web.archive.org/web/20231128043227/https://csrc.nist.gov/" class="usa-nav__link">Computer Security Resource Center (CSRC)</a> </li> <li class="usa-nav__submenu-item"> <a href="/web/20231128043227/https://www.nist.gov/nist-research-library" class="usa-nav__link">NIST Research Library</a> </li> </ul> </div> </div> </div> </li> <li class="usa-nav__primary-item"> <button class="usa-accordion__button usa-nav__link" aria-expanded="false" aria-controls="primary_menu-5"><span>News &amp; Events</span></button> <div id="primary_menu-5" class="usa-nav__submenu usa-megamenu"> <div class="grid-row"> <div class="tablet:grid-col-fill"><ul class="usa-nav__submenu-list"> <li class="usa-nav__submenu-item"> <a href="/web/20231128043227/https://www.nist.gov/news-events/news" class="usa-nav__link">News</a> </li> <li class="usa-nav__submenu-item"> <a href="/web/20231128043227/https://www.nist.gov/news-events/events" class="usa-nav__link">Events</a> </li> <li class="usa-nav__submenu-item"> <a href="/web/20231128043227/https://www.nist.gov/blogs" class="usa-nav__link">Blogs</a> </li> <li class="usa-nav__submenu-item"> <a href="/web/20231128043227/https://www.nist.gov/feature-stories" class="usa-nav__link">Feature Stories</a> </li> <li class="usa-nav__submenu-item"> <a href="/web/20231128043227/https://www.nist.gov/awards" class="usa-nav__link">Awards</a> </li> </ul></div><div class="column-break tablet:grid-col-fill"><ul class="usa-nav__submenu-list"> <li class="usa-nav__submenu-item"> <a href="/web/20231128043227/https://www.nist.gov/video-gallery" class="usa-nav__link">Video Gallery</a> </li> <li class="usa-nav__submenu-item"> <a href="/web/20231128043227/https://www.nist.gov/image-gallery" class="usa-nav__link">Image Gallery</a> </li> <li class="usa-nav__submenu-item"> <a href="/web/20231128043227/https://www.nist.gov/pao/media-contacts" class="usa-nav__link">Media Contacts</a> </li> </ul> </div> </div> </div> </li> <li class="usa-nav__primary-item"> <button class="usa-accordion__button usa-nav__link" aria-expanded="false" aria-controls="primary_menu-6"><span>About NIST</span></button> <div id="primary_menu-6" class="usa-nav__submenu usa-megamenu"> <div class="grid-row"> <div class="tablet:grid-col-fill"><ul class="usa-nav__submenu-list"> <li class="usa-nav__submenu-item"> <a href="/web/20231128043227/https://www.nist.gov/about-nist" class="usa-nav__link">About Us</a> </li> <li class="usa-nav__submenu-item"> <a href="/web/20231128043227/https://www.nist.gov/about-nist/contact-us" class="usa-nav__link">Contact Us</a> </li> <li class="usa-nav__submenu-item"> <a href="/web/20231128043227/https://www.nist.gov/about-nist/visit" class="usa-nav__link">Visit</a> </li> <li class="usa-nav__submenu-item"> <a href="/web/20231128043227/https://www.nist.gov/careers" class="usa-nav__link">Careers</a> </li> <li class="usa-nav__submenu-item"> <a href="/web/20231128043227/https://www.nist.gov/director/nist-organization-structure" class="usa-nav__link">Our Organization</a> <ul class="usa-nav__submenu-list"> <li> <a href="/web/20231128043227/https://www.nist.gov/director" class="usa-nav__link">Office of the Director</a> </li> <li> <a href="/web/20231128043227/https://www.nist.gov/director/nist-organization-structure/budget-planning" class="usa-nav__link">Budget &amp; Planning</a> </li> </ul> </li> </ul></div><div class="column-break tablet:grid-col-fill"><ul class="usa-nav__submenu-list"> <li class="usa-nav__submenu-item"> <a href="/web/20231128043227/https://www.nist.gov/about-nist/work-nist" class="usa-nav__link">Work with NIST</a> </li> <li class="usa-nav__submenu-item"> <a href="/web/20231128043227/https://www.nist.gov/history" class="usa-nav__link">History</a> <ul class="usa-nav__submenu-list"> <li> <a href="https://web.archive.org/web/20231128043227/http://nistdigitalarchives.contentdm.oclc.org/" class="usa-nav__link">NIST Digital Archives</a> </li> <li> <a href="/web/20231128043227/https://www.nist.gov/nist-museum" class="usa-nav__link">NIST Museum</a> </li> <li> <a href="/web/20231128043227/https://www.nist.gov/nist-and-nobel" class="usa-nav__link">NIST and the Nobel</a> </li> </ul> </li> <li class="usa-nav__submenu-item"> <a href="/web/20231128043227/https://www.nist.gov/education" class="usa-nav__link">Educational Resources</a> </li> </ul> </div> </div> </div> </li> </ul> </div> </nav> </header> <!-- nist-index-ignore-end --> </div> <div class="grid-container"> <div data-drupal-messages-fallback class="hidden"></div> </div> <div id="block-nist-www-content" class="nist-block"> <section class="nist-page__content usa-section clearfix"> <a id="main-content" tabindex="-1"></a> <div class="nist-section-header nist-section-header--menu"> <div class="nist-section-header__main grid-container"> <div class="grid-row"> <div class="nist-section-header__title tablet-lg:grid-col-4"> <h1 class="nist-page__title">NIST Center for Neutron Research</h1> </div> <div class="nist-section-header__desc tablet-lg:grid-col-8"> <div class="text-with-summary"> <p>The NIST Center for Neutron Research is a national resource for industry, universities, and government agencies.</p> </div> </div> </div> </div> </div> <div class="grid-container margin-top-4"> <div class="grid-row grid-gap-6"> <aside class="nist-page__region nist-page__region--sidebar-first tablet-lg:grid-col-4 desktop-lg:grid-col-3"> <div> <!-- nist-index-ignore-start --> <div data-elastic-exclude="" class="nist-block"> <nav> <ul class="usa-sidenav usa-accordion "> <li class="usa-sidenav__item"> <a href="https://web.archive.org/web/20231128043227/https://www-s.nist.gov/NCNR-IMS/login.do" data-drupal-link-system-path="">Logon to your NCNR-IMS account</a> </li> <li class="usa-sidenav__item"> <a href="/web/20231128043227/https://www.nist.gov/ncnr/obtaining-beam-time" data-drupal-link-system-path="">Obtaining Beam Time</a> </li> <li class="usa-sidenav__item usa-sidenav__item--parent"> <a href="/web/20231128043227/https://www.nist.gov/ncnr/arrange-visit-ncnr" data-drupal-link-system-path="">Arrange a visit to NCNR</a> <button class="usa-accordion__button" aria-expanded="false" aria-controls="menu-nist-center-for-neutron-res-3"><span class="usa-sr-only">Expand or Collapse</span></button> <ul id="menu-nist-center-for-neutron-res-3" class="usa-sidenav__sublist usa-accordion"> <li class="usa-sidenav__item"> <a href="/web/20231128043227/https://www.nist.gov/ncnr/chrns/travel-support" data-drupal-link-system-path="">CHRNS Student Travel Assistance</a> </li> <li class="usa-sidenav__item"> <a href="/web/20231128043227/https://www.nist.gov/ncnr/arrange-visit-ncnr/financial-assistance" data-drupal-link-system-path="">U. Maryland Travel Assistance</a> </li> <li class="usa-sidenav__item"> <a href="/web/20231128043227/https://www.nist.gov/ncnr/arrange-visit-ncnr/hotels-and-travel" data-drupal-link-system-path="">Hotels and Travel</a> </li> <li class="usa-sidenav__item"> <a href="/web/20231128043227/https://www.nist.gov/ncnr/arrange-visit-ncnr/obtaining-access-ncnr" data-drupal-link-system-path="">Obtaining Access to NCNR</a> </li> <li class="usa-sidenav__item"> <a href="/web/20231128043227/https://www.nist.gov/ncnr/arrange-visit-ncnr/visa-questions" data-drupal-link-system-path="">Visa Questions?</a> </li> <li class="usa-sidenav__item"> <a href="/web/20231128043227/https://www.nist.gov/about-nist/visit/campus-access-and-security" data-drupal-link-system-path="">NIST Access Control Policy</a> </li> </ul> </li> <li class="usa-sidenav__item usa-sidenav__item--parent"> <a href="/web/20231128043227/https://www.nist.gov/ncnr/planning-your-experiment" data-drupal-link-system-path="">Planning Your Experiment</a> <button class="usa-accordion__button" aria-expanded="false" aria-controls="menu-nist-center-for-neutron-res-4"><span class="usa-sr-only">Expand or Collapse</span></button> <ul id="menu-nist-center-for-neutron-res-4" class="usa-sidenav__sublist usa-accordion"> <li class="usa-sidenav__item"> <a href="/web/20231128043227/https://www.nist.gov/ncnr/planning-your-experiment/shipping-samples-ncnr" data-drupal-link-system-path="">Shipping samples to NCNR</a> </li> <li class="usa-sidenav__item"> <a href="/web/20231128043227/https://www.nist.gov/ncnr/planning-your-experiment/scattering-length-periodic-table" data-drupal-link-system-path="">Scattering Length Periodic Table</a> </li> <li class="usa-sidenav__item"> <a href="https://web.archive.org/web/20231128043227/http://www.ncnr.nist.gov/resources/activation/" data-drupal-link-system-path="">Activation and SLD Calculator</a> </li> </ul> </li> <li class="usa-sidenav__item"> <a href="https://web.archive.org/web/20231128043227/https://www.ncnr.nist.gov/ipeek" data-drupal-link-system-path="">Live Data</a> </li> <li class="usa-sidenav__item usa-sidenav__item--parent"> <a href="/web/20231128043227/https://www.nist.gov/ncnr/about-ncnr" data-drupal-link-system-path="">About NCNR</a> <button class="usa-accordion__button" aria-expanded="false" aria-controls="menu-nist-center-for-neutron-res-6"><span class="usa-sr-only">Expand or Collapse</span></button> <ul id="menu-nist-center-for-neutron-res-6" class="usa-sidenav__sublist usa-accordion"> <li class="usa-sidenav__item"> <a href="https://web.archive.org/web/20231128043227/https://www.nist.gov/publications/nist-center-neutron-research-over-40-years-serving-nistnbs-and-nation" data-drupal-link-system-path="">Informal History</a> </li> <li class="usa-sidenav__item"> <a href="/web/20231128043227/https://www.nist.gov/ncnr/about-ncnr/employmentresearch-opportunities" data-drupal-link-system-path="">Employment/Research Opportunities</a> </li> <li class="usa-sidenav__item"> <a href="/web/20231128043227/https://www.nist.gov/ncnr/about-ncnr/ncnr-annual-reports" data-drupal-link-system-path="">NCNR Annual Reports</a> </li> <li class="usa-sidenav__item"> <a href="https://web.archive.org/web/20231128043227/https://www.nist.gov/system/files/documents/2019/09/24/ncnr_dmp_v04.pdf" data-drupal-link-system-path="">Data Management Plan</a> </li> </ul> </li> <li class="usa-sidenav__item usa-sidenav__item--parent"> <a href="/web/20231128043227/https://www.nist.gov/ncnr/neutron-instruments" data-drupal-link-system-path="">Neutron Instruments</a> <button class="usa-accordion__button" aria-expanded="false" aria-controls="menu-nist-center-for-neutron-res-7"><span class="usa-sr-only">Expand or Collapse</span></button> <ul id="menu-nist-center-for-neutron-res-7" class="usa-sidenav__sublist usa-accordion"> <li class="usa-sidenav__item"> <a href="/web/20231128043227/https://www.nist.gov/ncnr/neutron-instruments/general-info-and-layout" data-drupal-link-system-path="">General Info and Layout</a> </li> <li class="usa-sidenav__item"> <a href="/web/20231128043227/https://www.nist.gov/ncnr/neutron-instruments/instrument-contacts" data-drupal-link-system-path="">Instrument contacts</a> </li> <li class="usa-sidenav__item"> <a href="/web/20231128043227/https://www.nist.gov/ncnr/neutron-instruments/instrument-control-software-0" title="Info on the NICE instrument control environment" data-drupal-link-system-path="">Instrument Control Software</a> </li> <li class="usa-sidenav__item"> <a href="https://web.archive.org/web/20231128043227/http://physics.nist.gov/MajResFac/NIF/" data-drupal-link-system-path="">Neutron imaging</a> <button class="usa-accordion__button" aria-expanded="false" aria-controls="menu-nist-center-for-neutron-res-7-4"><span class="usa-sr-only">Expand or Collapse</span></button> <ul id="menu-nist-center-for-neutron-res-7-4" class="usa-sidenav__sublist usa-accordion"> <li class="usa-sidenav__item"> <a href="https://web.archive.org/web/20231128043227/https://www.nist.gov/laboratories/tools-instruments/neutron-imaging-facility-nif" data-drupal-link-system-path="">BT2 Neutron Imaging Facility (NIF)</a> </li> <li class="usa-sidenav__item"> <a href="/web/20231128043227/https://www.nist.gov/laboratories/tools-instruments/cold-neutron-imaging-instrument" data-drupal-link-system-path="">NG6 Cold Neutron Imaging Facility</a> </li> </ul> </li> <li class="usa-sidenav__item"> <a href="https://web.archive.org/web/20231128043227/https://www.ncnr.nist.gov/instruments/bt1/" data-drupal-link-system-path="">Crystallography</a> <button class="usa-accordion__button" aria-expanded="false" aria-controls="menu-nist-center-for-neutron-res-7-5"><span class="usa-sr-only">Expand or Collapse</span></button> <ul id="menu-nist-center-for-neutron-res-7-5" class="usa-sidenav__sublist usa-accordion"> <li class="usa-sidenav__item"> <a href="/web/20231128043227/https://www.nist.gov/ncnr/high-resolution-powder-diffractometer-bt-1" data-drupal-link-system-path="">BT1 High Resolution Powder Diffractometer</a> </li> <li class="usa-sidenav__item"> <a href="/web/20231128043227/https://www.nist.gov/ncnr/bt-8-diffractometer-stress-and-texture" data-drupal-link-system-path="">BT8 Residual Stress Diffractometer</a> </li> </ul> </li> <li class="usa-sidenav__item"> <a href="/web/20231128043227/https://www.nist.gov/ncnr/neutron-instruments/reflectometry" data-drupal-link-system-path="">Reflectometry</a> <button class="usa-accordion__button" aria-expanded="false" aria-controls="menu-nist-center-for-neutron-res-7-6"><span class="usa-sr-only">Expand or Collapse</span></button> <ul id="menu-nist-center-for-neutron-res-7-6" class="usa-sidenav__sublist usa-accordion"> <li class="usa-sidenav__item"> <a href="https://web.archive.org/web/20231128043227/https://www.nist.gov/ncnr/chrns-candor-white-beam-reflectometer" data-drupal-link-system-path="">CANDOR White Beam Reflectometer [CHRNS]</a> </li> <li class="usa-sidenav__item"> <a href="/web/20231128043227/https://www.nist.gov/ncnr/magik-reflectometer" data-drupal-link-system-path="">MAGIK Offspecular Reflectometer</a> </li> <li class="usa-sidenav__item"> <a href="/web/20231128043227/https://www.nist.gov/ncnr/ng7-horizontal-neutron-reflectometer" data-drupal-link-system-path="">NG7 Cold Neutron Reflectometer- Horizontal Sample Geometry</a> </li> <li class="usa-sidenav__item"> <a href="/web/20231128043227/https://www.nist.gov/ncnr/polarized-beam-reflectometer-pbr" data-drupal-link-system-path="">Polarized Beam Reflectometer/Diffractometer (PBR)</a> </li> </ul> </li> <li class="usa-sidenav__item"> <a href="/web/20231128043227/https://www.nist.gov/ncnr/neutron-instruments/small-angle-neutron-scattering-sans" data-drupal-link-system-path="">Small Angle Neutron Scattering (SANS)</a> <button class="usa-accordion__button" aria-expanded="false" aria-controls="menu-nist-center-for-neutron-res-7-7"><span class="usa-sr-only">Expand or Collapse</span></button> <ul id="menu-nist-center-for-neutron-res-7-7" class="usa-sidenav__sublist usa-accordion"> <li class="usa-sidenav__item"> <a href="https://web.archive.org/web/20231128043227/https://www.nist.gov/ncnr/chrns-usans-ultra-small-angle-neutron-scattering" data-drupal-link-system-path="">BT5 Perfect Crystal SANS (USANS)</a> </li> <li class="usa-sidenav__item"> <a href="https://web.archive.org/web/20231128043227/https://www.nist.gov/ncnr/chrns-vsans-very-small-angle-neutron-scattering" data-drupal-link-system-path="">NG3 Very Small Angle Scattering Instrument [CHRNS]</a> </li> <li class="usa-sidenav__item"> <a href="https://web.archive.org/web/20231128043227/https://www.nist.gov/ncnr/ng7-sans-small-angle-neutron-scattering" data-drupal-link-system-path="">NG7 30m Small Angle Scattering Instrument</a> </li> <li class="usa-sidenav__item"> <a href="https://web.archive.org/web/20231128043227/http://www.nist.gov/ncnr/10m-sans-small-angle-neutron-scattering" data-drupal-link-system-path="">NGB 10 m Small Angle Scattering Instrument [nSOFT]</a> </li> <li class="usa-sidenav__item"> <a href="https://web.archive.org/web/20231128043227/https://www.nist.gov/ncnr/chrns-30m-sans-small-angle-neutron-scattering" data-drupal-link-system-path="">NGB 30m Small Angle Scattering Instrument</a> </li> </ul> </li> <li class="usa-sidenav__item"> <a href="/web/20231128043227/https://www.nist.gov/ncnr/neutron-instruments/spectroscopy" data-drupal-link-system-path="">Spectroscopy</a> <button class="usa-accordion__button" aria-expanded="false" aria-controls="menu-nist-center-for-neutron-res-7-8"><span class="usa-sr-only">Expand or Collapse</span></button> <ul id="menu-nist-center-for-neutron-res-7-8" class="usa-sidenav__sublist usa-accordion"> <li class="usa-sidenav__item"> <a href="/web/20231128043227/https://www.nist.gov/ncnr/filter-analyzer-spectrometer-fans" data-drupal-link-system-path="">BT4 Filter Analyzer Neutron Spectrometer</a> </li> <li class="usa-sidenav__item"> <a href="/web/20231128043227/https://www.nist.gov/ncnr/bt-4-triple-axis-spectrometer" data-drupal-link-system-path="">BT4 Triple Axis Spectrometer</a> </li> <li class="usa-sidenav__item"> <a href="/web/20231128043227/https://www.nist.gov/ncnr/bt-7-double-focusing-triple-axis-spectrometer" data-drupal-link-system-path="">BT7 Triple Axis Spectrometer</a> </li> <li class="usa-sidenav__item"> <a href="/web/20231128043227/https://www.nist.gov/ncnr/chrns-macs-multi-axis-crystal-spectrometer" data-drupal-link-system-path="">BT9 Multi-Axis Crystal Spectrometer (MACS) [CHRNS]</a> </li> <li class="usa-sidenav__item"> <a href="https://web.archive.org/web/20231128043227/https://www.nist.gov/ncnr/high-flux-backscattering-spectrometer" data-drupal-link-system-path="">NG2 High-Flux Backscattering Spectrometer (HFBS) [CHRNS]</a> </li> <li class="usa-sidenav__item"> <a href="/web/20231128043227/https://www.nist.gov/ncnr/dcs-disk-chopper-spectrometer" data-drupal-link-system-path="">NG4 Disk-Chopper Time-of-Flight Spectrometer (DCS)</a> </li> <li class="usa-sidenav__item"> <a href="/web/20231128043227/https://www.nist.gov/ncnr/spin-polarized-inelastic-neutron-spectrometer-spins" data-drupal-link-system-path="">NG5 Spin-Polarized Triple-axis Spectrometer (SPINS)</a> </li> <li class="usa-sidenav__item"> <a href="/web/20231128043227/https://www.nist.gov/ncnr/chrns-nse-neutron-spin-echo-spectrometer" data-drupal-link-system-path="">NGA Neutron Spin Echo Spectrometer (NSE) [CHRNS]</a> </li> </ul> </li> <li class="usa-sidenav__item"> <a href="/web/20231128043227/https://www.nist.gov/pml/radiation-physics/neutron-physics" data-drupal-link-system-path="">Neutron physics</a> <button class="usa-accordion__button" aria-expanded="false" aria-controls="menu-nist-center-for-neutron-res-7-9"><span class="usa-sr-only">Expand or Collapse</span></button> <ul id="menu-nist-center-for-neutron-res-7-9" class="usa-sidenav__sublist usa-accordion"> <li class="usa-sidenav__item"> <a href="https://web.archive.org/web/20231128043227/http://www.nist.gov/pml/div682/grp03/index.cfm" data-drupal-link-system-path="">NG6M Neutron Physics</a> </li> <li class="usa-sidenav__item"> <a href="/web/20231128043227/https://www.nist.gov/laboratories/tools-instruments/neutron-interferometry-and-optics-facilities" data-drupal-link-system-path="">NG7 Neutron Interferometer (NIOF)</a> </li> <li class="usa-sidenav__item"> <a href="https://web.archive.org/web/20231128043227/http://www.nist.gov/pml/div682/grp03/index.cfm" data-drupal-link-system-path="">NGC Neutron Physics 0.5 nm</a> </li> </ul> </li> </ul> </li> <li class="usa-sidenav__item"> <a href="/web/20231128043227/https://www.nist.gov/ncnr/schedules" data-drupal-link-system-path="">Schedules</a> </li> <li class="usa-sidenav__item"> <a href="/web/20231128043227/https://www.nist.gov/ncnr/spin-filters" data-drupal-link-system-path="">Spin Filters</a> </li> <li class="usa-sidenav__item"> <a href="/web/20231128043227/https://www.nist.gov/ncnr/sample-environment" data-drupal-link-system-path="">Sample Environment</a> </li> <li class="usa-sidenav__item"> <a href="/web/20231128043227/https://www.nist.gov/ncnr/sample-prep-labs" data-drupal-link-system-path="">Sample Prep Labs</a> </li> <li class="usa-sidenav__item usa-sidenav__item--parent"> <a href="/web/20231128043227/https://www.nist.gov/ncnr/data-reduction-analysis" data-drupal-link-system-path="">Data Reduction &amp; Analysis</a> <button class="usa-accordion__button" aria-expanded="false" aria-controls="menu-nist-center-for-neutron-res-12"><span class="usa-sr-only">Expand or Collapse</span></button> <ul id="menu-nist-center-for-neutron-res-12" class="usa-sidenav__sublist usa-accordion"> <li class="usa-sidenav__item"> <a href="/web/20231128043227/https://www.nist.gov/ncnr/data-reduction-analysis/reflectometry-software" data-drupal-link-system-path="">Reflectometry Software</a> </li> <li class="usa-sidenav__item"> <a href="/web/20231128043227/https://www.nist.gov/ncnr/data-reduction-analysis/sans-software" data-drupal-link-system-path="">SANS Software</a> </li> </ul> </li> <li class="usa-sidenav__item usa-sidenav__item--parent"> <a href="/web/20231128043227/https://www.nist.gov/ncnr/publishing-your-results" data-drupal-link-system-path="">Publishing Your Results</a> <button class="usa-accordion__button" aria-expanded="false" aria-controls="menu-nist-center-for-neutron-res-13"><span class="usa-sr-only">Expand or Collapse</span></button> <ul id="menu-nist-center-for-neutron-res-13" class="usa-sidenav__sublist usa-accordion"> <li class="usa-sidenav__item"> <a href="/web/20231128043227/https://www.nist.gov/ncnr/chrns/publications-and-acknowledgment" data-drupal-link-system-path="">Publishing CHRNS Results</a> </li> <li class="usa-sidenav__item"> <a href="/web/20231128043227/https://www.nist.gov/ncnr/publishing-your-results/werb" data-drupal-link-system-path="">WERB</a> </li> </ul> </li> <li class="usa-sidenav__item"> <a href="/web/20231128043227/https://www.nist.gov/ncnr/cold-source-installation-and-guide-upgrade" data-drupal-link-system-path="">Cold Source and Guide Upgrade</a> </li> <li class="usa-sidenav__item"> <a href="/web/20231128043227/https://www.nist.gov/ncnr/ncnr-facility-upgrades-during-unplanned-outage" data-drupal-link-system-path="">Facilities Upgrades during the Unplanned Outage</a> </li> <li class="usa-sidenav__item"> <a href="/web/20231128043227/https://www.nist.gov/programs-projects/chrns-non-equilibrium-structure-materials-initiative" title="CHRNS Non-Equilibrium Structure of Materials Initiative" data-drupal-link-system-path="">CHRNS Non-Equilibrium Initiative</a> </li> <li class="usa-sidenav__item"> <a href="/web/20231128043227/https://www.nist.gov/ncnr/chrns/education-and-outreach" data-drupal-link-system-path="">CHRNS Education and Outreach</a> </li> <li class="usa-sidenav__item"> <a href="https://web.archive.org/web/20231128043227/https://nug.umd.edu/index.html" data-drupal-link-system-path="">NCNR User Group</a> </li> </ul> </nav> </div> <!-- nist-index-ignore-end --> </div> </aside> <div class="nist-page__region nist-page__region--content tablet-lg:grid-col-8 desktop-lg:grid-col-9"> <div class="nist-block"> <div class="nist-content-row nist-content-row--width-legible paragraph paragraph--type--text paragraph--view-mode--default"> <div class="nist-block text-long"><h2 class="nist-block__title">Notice to Users</h2> <div> <h3>NCNR <span><span>has received <a href="https://web.archive.org/web/20231128043227/https://www.nrc.gov/cdn/doc-collection-news/2023/23-021.pdf" title="NRC Announcement Authorizing Restart">permission</a> from the Nuclear Regulatory Commission to restart operations.  Low power testing has begun</span></span>. </h3> </div></div> </div> <div class="nist-content-row nist-content-row--width-legible paragraph paragraph--type--text paragraph--view-mode--default"> <div class="nist-block text-long"><div class="grid-row grid-gap"> <div class="grid-col"> <figure class="align-center nist-image" data-link="/node/1203891"><a href="/web/20231128043227/https://www.nist.gov/ncnr/chrns"><img alt="Center for High Resolution Neutron Scattering" height="74" loading="lazy" src="/web/20231128043227im_/https://www.nist.gov/sites/default/files/styles/220_x_220_limit/public/images/2017/04/12/chrns-3-taller.png?itok=rhkFYkl2" typeof="foaf:Image" width="220"/></a><figcaption class="nist-image__caption"><div class="nist-image__caption-content" data-caption-editable="true"> </div> </figcaption></figure><p class="text-align-center"><em>Maximizing access for the scientific community to transformative neutron scattering instrumentation</em></p> </div> <div class="grid-col last"> <figure class="align-center nist-image"><img alt="nSoft Consortium Logo" height="74" loading="lazy" src="/web/20231128043227im_/https://www.nist.gov/sites/default/files/styles/220_x_220_limit/public/images/2017/01/26/nsoft_logo.png?itok=gnehMTfa" title="nSoft Consortium Logo" typeof="foaf:Image" width="220"/><figcaption class="nist-image__caption"><div class="nist-image__caption-content" data-caption-editable="true"> </div> </figcaption></figure><p class="text-align-center"><em>A consortium for the advancement of neutron-based measurements for manufacturing of soft materials</em></p> </div> </div></div> </div> <div class="nist-content-row nist-content-row--width-legible paragraph paragraph--type--text paragraph--view-mode--default"> <div class="nist-block text-long"><p class="nist-block__title">NEWS FOR NCNR USERS </p> <div class="grid-row grid-gap"> <div class="grid-col"> <div class="grid-col last"> <div> <h5><span><span><span><a href="https://web.archive.org/web/20231128043227/https://www.nist.gov/ncnr/ncnr-seminar-schedule"><strong>NCNR Seminar Schedule</strong></a><strong> </strong></span></span></span></h5> <p><strong><a href="https://web.archive.org/web/20231128043227/https://www.nist.gov/ncnr/cold-source-installation-and-guide-upgrade/nsf-new-neutron-spin-echo-spectrometer-ng">New Neutron Spin Echo for the Nation</a> - </strong><span><span>Funded by <a href="https://web.archive.org/web/20231128043227/https://www.nsf.gov/" title="National Science Foundation">NSF</a>, NIST and the <a href="https://web.archive.org/web/20231128043227/https://cns.che.udel.edu/" title="Center for Neutron Science">Center for Neutron Science</a> at the University of Delaware are building a new spin echo spectrometer</span></span></p> <p><strong><a data-entity-substitution="canonical" data-entity-type="node" data-entity-uuid="25ad868b-f5c6-42d1-b77a-f66f69e75e6d" href="/web/20231128043227/https://www.nist.gov/ncnr/cold-source-installation-and-guide-upgrade" title="Cold Source Installation and Guide Upgrade"><span><span>New Liquid Deuterium Cold Neutron Source to be Installed</span></span></a> - </strong>The NCNR is planning a one-year outage to install an upgraded cold neutron source</p> <p><strong><a href="https://web.archive.org/web/20231128043227/https://www.nist.gov/programs-projects/chrns-non-equilibrium-structure-materials-initiative">CHRNS Non-Equilibrium Structure of Materials Initiative</a> - </strong><span><span>CHRNS is supplying advanced neutron capabilities to characterize materials out of equilibrium</span></span></p> <p><a data-entity-substitution="canonical" data-entity-type="node" data-entity-uuid="6ac93c28-ebb6-459f-9ba9-e39fd3e23e6f" href="/web/20231128043227/https://www.nist.gov/ncnr/ncnr-facility-upgrades-during-unplanned-outage" title="NCNR Facility Upgrades during the Unplanned Outage"><strong>Facility Upgrades during the Unplanned Outage</strong></a>                          </p> <h5> </h5> </div> </div> </div> <div class="grid-col last"> <div> <p><strong><a href="https://web.archive.org/web/20231128043227/https://ncnr.nist.gov/dimeo/CHRNS_Animation_Final.mp4">Getting Great Data with CHRNS</a> - </strong>This 2½ minute video describes the Center for High Resolution Neutron Scattering, a key partnership with the National Science Foundation</p> <p><strong><a href="https://web.archive.org/web/20231128043227/https://ncnr.nist.gov/dimeo/NCNR_video.mp4">See Differently with Neutrons at NIST</a> - </strong>Watch a 2½ minute animated explanation for a general audience of what we do at the NCNR</p> </div> <p><strong><a href="https://web.archive.org/web/20231128043227/https://www.nist.gov/ncnr/training-other-facilities-acceptable">Training from Other Labs</a> - </strong>NIST accepts basic radiation safety training from other U.S. neutron facilities in place of the NIST offered on-line training</p> <p>The NCNR Users Group has summarized the results of a recent user <a href="https://web.archive.org/web/20231128043227/https://nug.umd.edu/2020SurveyResultswithResponses_July2020.pdf">survey</a></p> </div> </div></div> </div> <div class="paragraph paragraph--type--dynamic-content-list-ou paragraph--view-mode--default"> <div class="nist-block "> <h2 class="nist-block__title"> <div class="string">News and Updates</div> </h2> <div class="viewsreference"><div class="views-element-container"><div class="js-view-dom-id-df637dbad951f92a843a9024ec4bb2e53f8a220aaf0806b57a30eaf328f70270"> <div> <article about="/news-events/news/2023/03/ncnr-comprehensive-cooperative-agreement-program" typeof="schema:Article" class="nist-teaser"> <div class="nist-teaser__content-wrapper"> <header> <h3 class="nist-teaser__title"><a href="/web/20231128043227/https://www.nist.gov/news-events/news/2023/03/ncnr-comprehensive-cooperative-agreement-program"><span property="schema:name">NCNR Comprehensive Cooperative Agreement Program</span> </a></h3> <div class="nist-teaser__date"> <div class="daterange"><time datetime="2023-03-15T12:00:00Z">March 15, 2023</time> - <time datetime="2023-05-15T12:00:00Z">May 15, 2023</time> </div> </div> </header> <div class="nist-teaser__content"> <div property="schema:text" class="text-with-summary"> The NIST Center for Neutron Research is seeking competitive applications from eligible applicants for activities that will advance the research of NCNR users </div> </div> </div> </article> </div> <div> <article about="/news-events/news/2023/03/nrc-authorizes-restart-nist-research-reactor" typeof="schema:Article" class="nist-teaser"> <div class="nist-teaser__image"> <div class="entity-reference"> <a href="/web/20231128043227/https://www.nist.gov/news-events/news/2023/03/nrc-authorizes-restart-nist-research-reactor" hreflang="en"><img loading="lazy" src="/web/20231128043227im_/https://www.nist.gov/sites/default/files/styles/thumbnail/public/images/2022/03/16/ncnr-crop.png?itok=h2nGghYR" width="100" height="41" alt="View from above shows NIST's Center for Neutron Research building with green lawns and trees." typeof="foaf:Image"/> </a> </div> </div> <div class="nist-teaser__content-wrapper"> <header> <h3 class="nist-teaser__title"><a href="/web/20231128043227/https://www.nist.gov/news-events/news/2023/03/nrc-authorizes-restart-nist-research-reactor"><span property="schema:name">NRC Authorizes Restart of NIST Research Reactor</span> </a></h3> <div class="nist-teaser__date"> <div class="daterange"><time datetime="2023-03-10T12:00:00Z">March 10, 2023</time> </div> </div> </header> <div class="nist-teaser__content"> <div property="schema:text" class="text-with-summary"> NIST will soon begin a careful restart process and low-power testing. </div> </div> </div> </article> </div> <div> <article about="/news-events/news/2022/11/spotlight-zebra-striped-structures-twist-neutrons-and-extend-researchers" typeof="schema:Article" class="nist-teaser"> <div class="nist-teaser__image"> <div class="entity-reference"> <a href="/web/20231128043227/https://www.nist.gov/news-events/news/2022/11/spotlight-zebra-striped-structures-twist-neutrons-and-extend-researchers" hreflang="en"><img loading="lazy" src="/web/20231128043227im_/https://www.nist.gov/sites/default/files/styles/thumbnail/public/images/2022/12/07/1.png?itok=2L4ZR_Rw" width="100" height="100" alt="Black and white micrograph shows tiny white panels standing parallel to form small squares on a dark background. " typeof="foaf:Image"/> </a> </div> </div> <div class="nist-teaser__content-wrapper"> <header> <h3 class="nist-teaser__title"><a href="/web/20231128043227/https://www.nist.gov/news-events/news/2022/11/spotlight-zebra-striped-structures-twist-neutrons-and-extend-researchers"><span property="schema:name">Spotlight: Zebra-Striped Structures to Twist Neutrons and Extend Researchers’ Vision</span> </a></h3> <div class="nist-teaser__date"> <div class="daterange"><time datetime="2022-11-22T12:00:00Z">November 22, 2022</time> </div> </div> </header> <div class="nist-teaser__content"> <div property="schema:text" class="text-with-summary"> What are these microscopic zebra-striped squares, and why did scientists painstakingly arrange more than 6 million of them on a silicon plate just half a </div> </div> </div> </article> </div> <div> <article about="/news-events/news/2022/11/simple-material-could-scrub-carbon-dioxide-power-plant-smokestacks" typeof="schema:Article" class="nist-teaser"> <div class="nist-teaser__image"> <div class="entity-reference"> <a href="/web/20231128043227/https://www.nist.gov/news-events/news/2022/11/simple-material-could-scrub-carbon-dioxide-power-plant-smokestacks" hreflang="en"><img loading="lazy" src="/web/20231128043227im_/https://www.nist.gov/sites/default/files/styles/thumbnail/public/images/2022/10/27/MOFIllustration_Concept_v4.png?itok=G2L2xqmg" width="100" height="43" alt="Near a set of belching smokestacks sits a diagram of the structure of a metal-organic framework, with open spaces holding carbon dioxide molecules trapped inside." typeof="foaf:Image"/> </a> </div> </div> <div class="nist-teaser__content-wrapper"> <header> <h3 class="nist-teaser__title"><a href="/web/20231128043227/https://www.nist.gov/news-events/news/2022/11/simple-material-could-scrub-carbon-dioxide-power-plant-smokestacks"><span property="schema:name">This Simple Material Could Scrub Carbon Dioxide From Power Plant Smokestacks</span> </a></h3> <div class="nist-teaser__date"> <div class="daterange"><time datetime="2022-11-02T12:00:00Z">November 2, 2022</time> </div> </div> </header> <div class="nist-teaser__content"> <div property="schema:text" class="text-with-summary"> An easily synthesized chemical filter could stop the greenhouse gas from reaching the atmosphere. </div> </div> </div> </article> </div> <footer> <div class="link-list"><a href="/web/20231128043227/https://www.nist.gov/news-events/news-updates/org/5666">View All News and Updates</a></div> </footer> </div> </div> </div> </div> </div> <div class="paragraph paragraph--type--dynamic-content-list-ou paragraph--view-mode--default"> <div class="nist-block "> <h2 class="nist-block__title"> <div class="string">Awards</div> </h2> <div class="viewsreference"><div class="views-element-container"><div class="js-view-dom-id-33326c6926cda91ab1ed1bc09bb4fc96a0176821135262d30e423b676bbede56"> <div> <article about="/awards/2023-highly-cited-researcher-wei-zhou" class="nist-teaser"> <div class="nist-teaser__image"> <div class="entity-reference"> <a href="/web/20231128043227/https://www.nist.gov/awards/2023-highly-cited-researcher-wei-zhou" hreflang="en"><img loading="lazy" src="/web/20231128043227im_/https://www.nist.gov/sites/default/files/styles/thumbnail/public/images/2023/10/10/WeiZhou_Sept2023_300p.jpg?itok=9-_pwtKH" width="85" height="100" alt="Wei Zhou, NCNR, NIST" typeof="foaf:Image"/> </a> </div> </div> <div class="nist-teaser__content-wrapper"> <header> <h3 class="nist-teaser__title"><a href="/web/20231128043227/https://www.nist.gov/awards/2023-highly-cited-researcher-wei-zhou"><span>2023 Highly Cited Researcher - Wei Zhou</span> </a></h3> </header> <div class="nist-teaser__content"> <div class="text-long"> Recognizing the true pioneers in their fields over the last decade, demonstrated by the production of multiple highly-cited papers that rank </div> </div> </div> </article> </div> <div> <article about="/awards/2023-highly-cited-researcher-hui-wu" class="nist-teaser"> <div class="nist-teaser__image"> <div class="entity-reference"> <a href="/web/20231128043227/https://www.nist.gov/awards/2023-highly-cited-researcher-hui-wu" hreflang="en"><img loading="lazy" src="/web/20231128043227im_/https://www.nist.gov/sites/default/files/styles/thumbnail/public/images/2018/11/20/huiwu.jpg?itok=2Uc0v4XH" width="83" height="100" alt="Hui Wu @ NIST" typeof="foaf:Image"/> </a> </div> </div> <div class="nist-teaser__content-wrapper"> <header> <h3 class="nist-teaser__title"><a href="/web/20231128043227/https://www.nist.gov/awards/2023-highly-cited-researcher-hui-wu"><span>2023 Highly Cited Researcher - Hui Wu</span> </a></h3> </header> <div class="nist-teaser__content"> <div class="text-long"> Recognizing the true pioneers in their fields over the last decade, demonstrated by the production of multiple highly-cited papers that rank </div> </div> </div> </article> </div> <div> <article about="/awards/2023-aps-fellow-nick-butch" class="nist-teaser"> <div class="nist-teaser__image"> <div class="entity-reference"> <a href="/web/20231128043227/https://www.nist.gov/awards/2023-aps-fellow-nick-butch" hreflang="en"><img loading="lazy" src="/web/20231128043227im_/https://www.nist.gov/sites/default/files/styles/thumbnail/public/images/2023/10/24/nick.jpg?itok=TcoKnPY4" width="100" height="89" alt="Nicholas Butch" typeof="foaf:Image"/> </a> </div> </div> <div class="nist-teaser__content-wrapper"> <header> <h3 class="nist-teaser__title"><a href="/web/20231128043227/https://www.nist.gov/awards/2023-aps-fellow-nick-butch"><span>2023 APS Fellow - Nick Butch</span> </a></h3> </header> <div class="nist-teaser__content"> <div class="text-long"> For extraordinary and wide-ranging contributions to the synthesis and experimental study of exotic superconducting, magnetic, and </div> </div> </div> </article> </div> <footer> <div class="link-list"><a href="/web/20231128043227/https://www.nist.gov/awards/org/5666">View All Awards</a></div> </footer> </div> </div> </div> </div> </div> <div class="paragraph paragraph--type--content-list paragraph--view-mode--default"> <div class="nist-block "> <h2 class="nist-block__title"> <div class="string">Previous Events</div> </h2> <div class="nist-field nist-field--label-hidden entity-reference"> <div class="nist-field__items"> <div class="nist-field__item"> <article about="/news-events/events/2017/12/ncnr-50-year-symposium" class="nist-teaser"> <div class="nist-teaser__image"> <div class="entity-reference"> <a href="/web/20231128043227/https://www.nist.gov/news-events/events/2017/12/ncnr-50-year-symposium" hreflang="en"><img loading="lazy" src="/web/20231128043227im_/https://www.nist.gov/sites/default/files/styles/thumbnail/public/images/2017/10/17/ncnr50thlogo_finalblue.png?itok=rxAvYZDU" width="100" height="79" alt="NCNR 50th Anniversary" typeof="foaf:Image"/> </a> </div> </div> <div class="nist-teaser__content-wrapper"> <header> <h3 class="nist-teaser__title"><a href="/web/20231128043227/https://www.nist.gov/news-events/events/2017/12/ncnr-50-year-symposium"><span>NCNR 50 Year Symposium</span> </a></h3> <div class="nist-teaser__date"> <div class="smartdate">Thu, Dec 7 - Fri, Dec 8 2017</div> </div> </header> <div class="nist-teaser__content"> <div class="text-with-summary"> Purpose To celebrate the achievements and illustrious lifetime of the NCNR. Description The NIST Bureau of Standards </div> </div> </div> </article> </div> <div class="nist-field__item"> <article about="/news-events/events/2014/08/workshop-neutron-measurements-materials-design-characterization" class="nist-teaser"> <div class="nist-teaser__content-wrapper"> <header> <h3 class="nist-teaser__title"><a href="/web/20231128043227/https://www.nist.gov/news-events/events/2014/08/workshop-neutron-measurements-materials-design-characterization"><span>Workshop on Neutron Measurements for Materials Design &amp; Characterization</span> </a></h3> <div class="nist-teaser__date"> <div class="smartdate">Thu, Aug 21 - Fri, Aug 22 2014</div> </div> </header> <div class="nist-teaser__content"> <div class="text-with-summary"> This two day meeting aims to gather the expertise and experience of the attendees to map out the future directions for </div> </div> </div> </article> </div> </div> </div> <div class="link-list"> <a href="/web/20231128043227/https://www.nist.gov/news-events/upcoming-events/org/5666">View All Events</a> </div> </div> </div> </div> </div> </div> </div> <div class="grid-container"> <div class="nist-page__region nist-page__region--content-bottom"> <div class="nist-block nist-block--contact"> <h2 class="nist-block__title">Contacts</h2> <div class="nist-contact"> <h3 class="nist-contact__heading">General Information</h3> <ul class="nist-contact__items"> <li about="/people/james-m-adams" class="nist-contact__item"> <div class="nist-contact__name"><a href="/web/20231128043227/https://www.nist.gov/people/james-m-adams" title="View staff profile page">James M. Adams</a></div> <div> <a href="https://web.archive.org/web/20231128043227/mailto:james.adams@nist.gov">james.adams@nist.gov</a> </div> <div> (301) 975-6210 </div> </li> </ul> </div> </div> </div> </div> </section> </div> <div data-elastic-exclude> <!-- nist-index-ignore-start --> <footer class="nist-footer padding-bottom-4"> <div class="grid-container nist-footer__info"> <div class="grid-row"> <div class="tablet:grid-col-6"> <div class="nist-footer__logo"> <a href="/web/20231128043227/https://www.nist.gov/" title="National Institute of Standards and Technology" rel="home"> <img class="nist-footer__logo-img" src="/web/20231128043227im_/https://www.nist.gov/libraries/nist-component-library/dist/img/logo/NIST-Logo-Brand-White.svg" alt="National Institute of Standards and Technology logo" width="300px" height="42px"/> </a> </div> <div class="nist-footer__contact"> <h3 class="nist-footer__contact-heading">HEADQUARTERS</h3> <address> 100 Bureau Drive<br> Gaithersburg, MD 20899<br> <a href="https://web.archive.org/web/20231128043227/tel:301-975-2000">301-975-2000</a> </address> <p> <a href="https://web.archive.org/web/20231128043227/mailto:do-webmaster@nist.gov">Webmaster</a> | <a href="https://web.archive.org/web/20231128043227/https://www.nist.gov/about-nist/contact-us">Contact Us</a> | <a href="https://web.archive.org/web/20231128043227/https://www.nist.gov/visit">Our Other Offices</a> </p> </div> </div> <div class="tablet:grid-col-6"> <div class="nist-footer__social-links"> <a class="nist-social nist-social--twitter-white" href="https://web.archive.org/web/20231128043227/https://twitter.com/NIST"> <span>Twitter</span> </a> <a class="nist-social nist-social--facebook-white" href="https://web.archive.org/web/20231128043227/https://www.facebook.com/NIST"> <span>Facebook</span> </a> <a class="nist-social nist-social--linkedin-white" href="https://web.archive.org/web/20231128043227/https://www.linkedin.com/company/nist"> <span>LinkedIn</span> </a> <a class="nist-social nist-social--instagram-white" href="https://web.archive.org/web/20231128043227/https://www.instagram.com/nist/"> <span>Instagram</span> </a> <a class="nist-social nist-social--youtube-white" href="https://web.archive.org/web/20231128043227/https://www.youtube.com/NIST"> <span>YouTube</span> </a> <a class="nist-social nist-social--giphy-white" href="https://web.archive.org/web/20231128043227/https://giphy.com/nist"> <span>Giphy</span> </a> <a class="nist-social nist-social--rss-white" href="https://web.archive.org/web/20231128043227/https://www.nist.gov/news-events/nist-rss-feeds"> <span>RSS Feed</span> </a> <a class="nist-social nist-social--envelope-white" href="https://web.archive.org/web/20231128043227/https://public.govdelivery.com/accounts/USNIST/subscriber/new"> <span>Mailing List</span> </a> </div> <div class="nist-footer__feedback"> How are we doing? <a class="usa-button" rel="nofollow" href="/web/20231128043227/https://www.nist.gov/form/nist-gov-feedback?destination=/ncnr" title="Provide feedback">Feedback</a> </div> </div> </div> </div> <div class="grid-container"> <div class="nist-footer__nav" role="navigation"> <ul> <li class="nist-footer__menu-item"> <a href="https://web.archive.org/web/20231128043227/https://www.nist.gov/privacy-policy">Site Privacy</a> </li> <li class="nist-footer__menu-item"> <a href="https://web.archive.org/web/20231128043227/https://www.nist.gov/oism/accessibility">Accessibility</a> </li> <li class="nist-footer__menu-item"> <a href="https://web.archive.org/web/20231128043227/https://www.nist.gov/privacy">Privacy Program</a> </li> <li class="nist-footer__menu-item"> <a href="https://web.archive.org/web/20231128043227/https://www.nist.gov/oism/copyrights">Copyrights</a> </li> <li class="nist-footer__menu-item"> <a href="https://web.archive.org/web/20231128043227/https://www.commerce.gov/vulnerability-disclosure-policy">Vulnerability Disclosure</a> </li> <li class="nist-footer__menu-item"> <a href="https://web.archive.org/web/20231128043227/https://www.nist.gov/no-fear-act-policy">No Fear Act Policy</a> </li> <li class="nist-footer__menu-item"> <a href="https://web.archive.org/web/20231128043227/https://www.nist.gov/office-director/freedom-information-act">FOIA</a> </li> <li class="nist-footer__menu-item"> <a href="https://web.archive.org/web/20231128043227/https://www.nist.gov/environmental-policy-statement">Environmental Policy</a> </li> <li class="nist-footer__menu-item"> <a href="https://web.archive.org/web/20231128043227/https://www.nist.gov/summary-report-scientific-integrity">Scientific Integrity</a> </li> <li class="nist-footer__menu-item"> <a href="https://web.archive.org/web/20231128043227/https://www.nist.gov/nist-information-quality-standards">Information Quality Standards</a> </li> <li class="nist-footer__menu-item"> <a href="https://web.archive.org/web/20231128043227/https://www.commerce.gov/">Commerce.gov</a> </li> <li class="nist-footer__menu-item"> <a href="https://web.archive.org/web/20231128043227/http://www.science.gov/">Science.gov</a> </li> <li class="nist-footer__menu-item"> <a href="https://web.archive.org/web/20231128043227/http://www.usa.gov/">USA.gov</a> </li> <li class="nist-footer__menu-item"> <a href="https://web.archive.org/web/20231128043227/https://vote.gov/">Vote.gov</a> </li> </ul> </div> </div> </footer> <!-- nist-index-ignore-end --> </div> </div> <script type="application/json" data-drupal-selector="drupal-settings-json">{"path":{"baseUrl":"\/","scriptPath":null,"pathPrefix":"","currentPath":"node\/341086","currentPathIsAdmin":false,"isFront":false,"currentLanguage":"en"},"pluralDelimiter":"\u0003","suppressDeprecationErrors":true,"back_to_top":{"back_to_top_button_trigger":100,"back_to_top_prevent_on_mobile":false,"back_to_top_prevent_in_admin":true,"back_to_top_button_type":"image","back_to_top_button_text":"Back to top"},"google_analytics":{"account":"G-HEQ0YF2VYL","trackOutbound":true,"trackMailto":true,"trackTel":true,"trackDownload":true,"trackDownloadExtensions":"7z|aac|arc|arj|asf|asx|avi|bin|bsh|c|csv|doc(x|m)?|dot(x|m)?|dw(fx|g|gd)|dxf|eps|epub|exe|f(90)|flv|gif|gz|gzip|hqx|jar|jpe?g|js|m1v|mp(2|3|4|e?g)|mobi|mov(ie)?|msi|msp|pdf|phps|pl|png|ppt(x|m)?|pot(x|m)?|pps(x|m)?|ppam|sld(x|m)?|thmx|qtm?|ra(m|r)?|rfa|rtf|rvt|sch|sea|sit|swf|tar|tgz|tif|txt|txz|wav|wma|wmv|wpd|wrl|xls(x|m|b)?|xlt(x|m)|xlam|xml|xsd|z|zip"},"nist_search":{"clickTracking":"search-report-click","isDebug":false,"clickTrackEnabled":true,"message":"NIST Search in debug mode. Check the browsers network inspector for Click Track reporting results..."},"data":{"extlink":{"extTarget":false,"extTargetNoOverride":false,"extNofollow":false,"extNoreferrer":false,"extFollowNoOverride":false,"extClass":"ext","extLabel":"(link is external)","extImgClass":false,"extSubdomains":true,"extExclude":"\\.gov\\\/|\\.mil\\\/|\\manufacturingusa\\.com\\\/","extInclude":"","extCssExclude":"","extCssExplicit":"","extAlert":true,"extAlertText":"Thank you for visiting NIST. We hope your visit was informative. We have provided a link to this site because it has information that may be of interest to our users. NIST does not necessarily endorse the views expressed or the facts presented on this site. Further, NIST does not endorse any commercial products that may be advertised or available on this site. Click OK to be directed to your link.","mailtoClass":"0","mailtoLabel":"(link sends email)","extUseFontAwesome":false,"extIconPlacement":"append","extFaLinkClasses":"fa fa-external-link","extFaMailtoClasses":"fa fa-envelope-o","whitelistedDomains":[]}},"user":{"uid":0,"permissionsHash":"2f77e4dcfce20728ac491170886da836c10b580f9bdfeb9c9e729fe4958834d5"}}</script> <script src="/web/20231128043227js_/https://www.nist.gov/sites/default/files/js/js_wWC32cBD9qab55wFkKWKvOdi_p-P8cBjregEiEdV1z4.js?scope=footer&amp;delta=0&amp;language=en&amp;theme=nist_www&amp;include=eJx1kYGuwyAIRX_IVz_JUMuUzYoTXNe_X9utabPlJYbA4QZu0HNFe703rLPpwd-c8vKKPeXuKv-2yHM2gTkkdJAhzUpe7DcwmURdonwjdRdKitX-IhfgLRRSpLFUfqD9BquZjWnEERcPnHqobuTBDiTQL2vXoUZmURwXr4Kb3obEPaRz_vcZZSPCgHUv3TRNZ_WpXiX41HWBHWorkLpPaQpUCBVKlL1zkK7l0vpEEnEwD8JJ7Ba7xXVLaPzxBx1nj-ZCwUNR4rxf6yBvy3hvkFxEClEPlyP5yuuxXmYwua8"></script> <script src="https://web.archive.org/web/20231128043227js_/https://siteimproveanalytics.com/js/siteanalyze_6017546.js" async></script> <script src="/web/20231128043227js_/https://www.nist.gov/sites/default/files/js/js_5ryNUs6GxBdloDjzmRgzoVauqZxQeUM7_K9e9QHtDzs.js?scope=footer&amp;delta=2&amp;language=en&amp;theme=nist_www&amp;include=eJx1kYGuwyAIRX_IVz_JUMuUzYoTXNe_X9utabPlJYbA4QZu0HNFe703rLPpwd-c8vKKPeXuKv-2yHM2gTkkdJAhzUpe7DcwmURdonwjdRdKitX-IhfgLRRSpLFUfqD9BquZjWnEERcPnHqobuTBDiTQL2vXoUZmURwXr4Kb3obEPaRz_vcZZSPCgHUv3TRNZ_WpXiX41HWBHWorkLpPaQpUCBVKlL1zkK7l0vpEEnEwD8JJ7Ba7xXVLaPzxBx1nj-ZCwUNR4rxf6yBvy3hvkFxEClEPlyP5yuuxXmYwua8"></script> <script type="text/javascript">window.NREUM||(NREUM={});NREUM.info={"beacon":"gov-bam.nr-data.net","licenseKey":"37b7ccb661","applicationID":"1089704227","transactionName":"YFxUN0sADEdYVkBaClkWdwBNCA1aFnFGRhVWVWoNVgUHaHpaWkcXWFVaBks9LFtdUGJaAEB6WQ1NEw1YVVBGHltBUFMU","queueTime":4,"applicationTime":1959,"atts":"TBtXQQMaH0k=","errorBeacon":"gov-bam.nr-data.net","agent":""}</script></body> </html> <!-- FILE ARCHIVED ON 04:32:27 Nov 28, 2023 AND RETRIEVED FROM THE INTERNET ARCHIVE ON 12:44:14 Nov 30, 2024. JAVASCRIPT APPENDED BY WAYBACK MACHINE, COPYRIGHT INTERNET ARCHIVE. ALL OTHER CONTENT MAY ALSO BE PROTECTED BY COPYRIGHT (17 U.S.C. SECTION 108(a)(3)). --> <!-- playback timings (ms): captures_list: 0.766 exclusion.robots: 0.035 exclusion.robots.policy: 0.021 esindex: 0.016 cdx.remote: 7.113 LoadShardBlock: 211.39 (3) PetaboxLoader3.datanode: 88.835 (4) PetaboxLoader3.resolve: 249.203 (3) load_resource: 155.728 -->

Pages: 1 2 3 4 5 6 7 8 9 10