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id="toc-Cumulative_fission_yields" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Cumulative_fission_yields"> <div class="vector-toc-text"> 3 Cumulative fission yields </div> </a> <ul id="toc-Cumulative_fission_yields-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Ordered_by_mass_number" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Ordered_by_mass_number"> <div class="vector-toc-text"> 4 Ordered by mass number </div> </a> <ul id="toc-Ordered_by_mass_number-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Half_lives,_decay_modes,_and_branching_fractions" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Half_lives,_decay_modes,_and_branching_fractions"> <div class="vector-toc-text"> 5 Half lives, decay modes, and branching fractions </div> </a> <ul id="toc-Half_lives,_decay_modes,_and_branching_fractions-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Ordered_by_thermal_neutron_absorption_cross_section" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Ordered_by_thermal_neutron_absorption_cross_section"> <div class="vector-toc-text"> 6 Ordered by thermal neutron absorption cross section </div> </a> <ul id="toc-Ordered_by_thermal_neutron_absorption_cross_section-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-References" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#References"> <div class="vector-toc-text"> 7 References </div> </a> <ul id="toc-References-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-External_links" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#External_links"> <div 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href="mw-data:TemplateStyles:r886047488" />(%)<a href="#cite_note-2">[a 2]</a> </th> <th><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r886047488" />(<a href="/wiki/Kiloelectronvolt" class="mw-redirect" title="Kiloelectronvolt">keV</a>) </th> <th> </th></tr> <tr> <td><a href="/wiki/Technetium-99" title="Technetium-99">99Tc</a> </td> <td>0.211</td> <td>6.1385</td> <td>294 </td> <td style="text-align:left;">β </td></tr> <tr> <td><a href="/wiki/Tin-126" class="mw-redirect" title="Tin-126">126Sn</a> </td> <td>0.230</td> <td>0.1084</td> <td>4050<a href="#cite_note-3">[a 3]</a> </td> <td style="text-align:left;">βγ </td></tr> <tr> <td><a href="/wiki/Selenium-79" title="Selenium-79">79Se</a> </td> <td>0.327</td> <td>0.0447</td> <td>151 </td> <td style="text-align:left;">β </td></tr> <tr> <td><a href="/wiki/Caesium-135" class="mw-redirect" title="Caesium-135">135Cs</a> </td> <td>1.33 </td> <td>6.9110<a href="#cite_note-4">[a 4]</a></td> <td>269 </td> <td style="text-align:left;">β </td></tr> <tr> <td><a href="/wiki/Zirconium-93" class="mw-redirect" title="Zirconium-93">93Zr</a> </td> <td>1.53 </td> <td>5.4575</td> <td>91 </td> <td style="text-align:left;">βγ </td></tr> <tr> <td><a href="/wiki/Palladium-107" class="mw-redirect" title="Palladium-107">107Pd</a> </td> <td>6.5  </td> <td>1.2499</td> <td>33 </td> <td style="text-align:left;">β </td></tr> <tr> <td><a href="/wiki/Iodine-129" title="Iodine-129">129I</a> </td> <td>16.14  </td> <td>0.8410</td> <td>194 </td> <td style="text-align:left;">βγ </td></tr> <tr class="sortbottom"> <td colspan="5" style="text-align:left;"><style data-mw-deduplicate="TemplateStyles:r1239543626">.mw-parser-output .reflist{margin-bottom:0.5em;list-style-type:decimal}@media screen{.mw-parser-output .reflist{font-size:90%}}.mw-parser-output .reflist .references{font-size:100%;margin-bottom:0;list-style-type:inherit}.mw-parser-output .reflist-columns-2{column-width:30em}.mw-parser-output .reflist-columns-3{column-width:25em}.mw-parser-output .reflist-columns{margin-top:0.3em}.mw-parser-output .reflist-columns ol{margin-top:0}.mw-parser-output .reflist-columns li{page-break-inside:avoid;break-inside:avoid-column}.mw-parser-output .reflist-upper-alpha{list-style-type:upper-alpha}.mw-parser-output .reflist-upper-roman{list-style-type:upper-roman}.mw-parser-output .reflist-lower-alpha{list-style-type:lower-alpha}.mw-parser-output .reflist-lower-greek{list-style-type:lower-greek}.mw-parser-output .reflist-lower-roman{list-style-type:lower-roman}</style><div class="reflist"> <div class="mw-references-wrap"><ol class="references"> <li id="cite_note-1"><a href="#cite_ref-1">^</a> Decay energy is split among <a href="/wiki/Beta_particle" title="Beta particle">β</a>, <a href="/wiki/Neutrino" title="Neutrino">neutrino</a>, and <a href="/wiki/Gamma_ray" title="Gamma ray">γ</a> if any. </li> <li id="cite_note-2"><a href="#cite_ref-2">^</a> Per 65 thermal neutron fissions of <a href="/wiki/Uranium-235" title="Uranium-235">235U</a> and 35 of <a href="/wiki/Plutonium-239" title="Plutonium-239">239Pu</a>. </li> <li id="cite_note-3"><a href="#cite_ref-3">^</a> Has decay energy 380 keV, but its decay product 126Sb has decay energy 3.67 MeV. </li> <li id="cite_note-4"><a href="#cite_ref-4">^</a> Lower in thermal reactors because <a href="/wiki/Xenon-135" title="Xenon-135">135Xe</a>, its predecessor, <a href="/wiki/Neutron_poison" title="Neutron poison">readily absorbs neutrons</a>. </li> </ol></div></div> </td></tr></tbody></table></div> <div style="float:right; margin:0.25em;"> <table style="border:1px solid #CCCCCC; text-align:right;"> <caption style="background-color:orange; min-width: 21em; padding:0.2em 0;"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1045256916" /><div class="navbar-header"><a href="/wiki/Medium-lived_fission_product" class="mw-redirect" title="Medium-lived fission product">Medium-lived fission products</a><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374" /><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1239400231" /><div class="navbar plainlinks hlist navbar-mini"><ul><li class="nv-view"><a href="/wiki/Template:Medium-lived_fission_products" title="Template:Medium-lived fission products"><abbr title="View this template">v</abbr></a></li><li class="nv-talk"><a href="/wiki/Template_talk:Medium-lived_fission_products" title="Template talk:Medium-lived fission products"><abbr title="Discuss this template">t</abbr></a></li><li class="nv-edit"><a href="/wiki/Special:EditPage/Template:Medium-lived_fission_products" title="Special:EditPage/Template:Medium-lived fission products"><abbr title="Edit this template">e</abbr></a></li></ul></div></div> </caption> <tbody><tr style="text-align:center;"> <th> </th> <th><a href="/wiki/Halflife" class="mw-redirect" title="Halflife">t½</a> (<a href="/wiki/Year" title="Year">year</a>) </th> <th><a class="mw-selflink selflink">Yield</a> (<style data-mw-deduplicate="TemplateStyles:r1038841319">.mw-parser-output .tooltip-dotted{border-bottom:1px dotted;cursor:help}</style>%) </th> <th><a href="/wiki/Decay_energy" title="Decay energy">Q</a> (<a href="/wiki/Kiloelectronvolt" class="mw-redirect" title="Kiloelectronvolt">keV</a>) </th> <th><a href="/wiki/Decay_mode" class="mw-redirect" title="Decay mode">βγ</a> </th></tr> <tr> <td><a href="/wiki/Europium-155" class="mw-redirect" title="Europium-155">155Eu</a> </td> <td> 4.76 </td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1038841319" />0.0803  </td> <td>252 </td> <td>βγ </td></tr> <tr> <td><a href="/wiki/Krypton-85" title="Krypton-85">85Kr</a> </td> <td>10.76 </td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1038841319" />0.2180  </td> <td>687 </td> <td>βγ </td></tr> <tr> <td><a href="/wiki/Cadmium-113m" class="mw-redirect" title="Cadmium-113m">113mCd</a> </td> <td>14.1  </td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1038841319" />0.0008  </td> <td>316 </td> <td>β </td></tr> <tr> <td><a href="/wiki/Strontium-90" title="Strontium-90">90Sr</a> </td> <td>28.9  </td> <td>4.505   </td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1038841319" />2826 </td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1038841319" />β </td></tr> <tr> <td><a href="/wiki/Caesium-137" title="Caesium-137">137Cs</a> </td> <td>30.23 </td> <td>6.337   </td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1038841319" />1176 </td> <td>β<link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1038841319" />γ </td></tr> <tr> <td><a href="/wiki/Tin-121m" class="mw-redirect" title="Tin-121m">121mSn</a> </td> <td>43.9  </td> <td>0.00005 </td> <td>390 </td> <td>βγ </td></tr> <tr> <td><a href="/wiki/Samarium-151" class="mw-redirect" title="Samarium-151">151Sm</a> </td> <td>94.6  </td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1038841319" />0.5314  </td> <td>77 </td> <td>β </td></tr></tbody></table></div> <a href="/wiki/Nuclear_fission" title="Nuclear fission">Nuclear fission</a> splits a heavy nucleus such as <a href="/wiki/Uranium" title="Uranium">uranium</a> or <a href="/wiki/Plutonium" title="Plutonium">plutonium</a> into two lighter nuclei, which are called <a href="/wiki/Fission_products" class="mw-redirect" title="Fission products">fission products</a>. Yield refers to the fraction of a fission product produced per fission. Yield can be broken down by: <ol><li>Individual <a href="/wiki/Isotope" title="Isotope">isotope</a></li> <li><a href="/wiki/Chemical_element" title="Chemical element">Chemical element</a> spanning several isotopes of different <a href="/wiki/Mass_number" title="Mass number">mass number</a> but same <a href="/wiki/Atomic_number" title="Atomic number">atomic number</a>.</li> <li>Nuclei of a given <a href="/wiki/Mass_number" title="Mass number">mass number</a> regardless of <a href="/wiki/Atomic_number" title="Atomic number">atomic number</a>. Known as "chain yield" because it represents a <a href="/wiki/Decay_chain" title="Decay chain">decay chain</a> of <a href="/wiki/Beta_decay" title="Beta decay">beta decay</a>.</li></ol> Isotope and element yields will change as the fission products undergo beta decay, while chain yields do not change after completion of <a href="/wiki/Neutron_emission" title="Neutron emission">neutron emission</a> by a few neutron-rich initial fission products (<a href="/wiki/Delayed_neutron" title="Delayed neutron">delayed neutrons</a>), with <a href="/wiki/Half-life" title="Half-life">half-life</a> measured in seconds. A few isotopes can be produced directly by fission, but not by beta decay because the would-be precursor with atomic number one less is stable and does not decay (atomic number grows by 1 during beta decay). Chain yields do not account for these "shadowed" isotopes; however, they have very low yields (less than a millionth as much as common fission products) because they are far less neutron-rich than the original heavy nuclei. Yield is usually stated as <a href="/wiki/Percentage" title="Percentage">percentage</a> per fission, so that the total yield percentages sum to 200%. Less often, it is stated as percentage of all fission products, so that the percentages sum to 100%. <a href="/wiki/Ternary_fission" title="Ternary fission">Ternary fission</a>, about 0.2–0.4% of fissions, also produces a third light nucleus such as <a href="/wiki/Helium-4" title="Helium-4">helium-4</a> (90%) or <a href="/wiki/Tritium" title="Tritium">tritium</a> (7%). <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="Mass_vs._yield_curve">Mass vs. yield curve</h2>[<a href="/w/index.php?title=Fission_product_yield&action=edit&section=1" title="Edit section: Mass vs. yield curve">edit</a>]</div> <figure typeof="mw:File/Thumb"><a href="/wiki/File:ThermalFissionYield.svg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/6/68/ThermalFissionYield.svg/450px-ThermalFissionYield.svg.png" decoding="async" width="450" height="360" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/6/68/ThermalFissionYield.svg/675px-ThermalFissionYield.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/6/68/ThermalFissionYield.svg/900px-ThermalFissionYield.svg.png 2x" data-file-width="800" data-file-height="640" /></a><figcaption>Fission product yields by mass for thermal neutron fission of U-235, Pu-239, a combination of the two typical of current nuclear power reactors, and U-233 used in the <a href="/wiki/Thorium_fuel_cycle" title="Thorium fuel cycle">thorium fuel cycle</a></figcaption></figure> If a graph of the <a href="/wiki/Mass" title="Mass">mass</a> or <a href="/wiki/Mole_(unit)" title="Mole (unit)">mole</a> yield of <a href="/wiki/Fission_products" class="mw-redirect" title="Fission products">fission products</a> against the <a href="/wiki/Atomic_number" title="Atomic number">atomic number</a> of the fragments is drawn then it has two peaks, one in the area <a href="/wiki/Zirconium" title="Zirconium">zirconium</a> through to <a href="/wiki/Palladium" title="Palladium">palladium</a> and one at <a href="/wiki/Xenon" title="Xenon">xenon</a> through to <a href="/wiki/Neodymium" title="Neodymium">neodymium</a>. This is because the fission event causes the nucleus to split in an asymmetric manner,<a href="#cite_note-5">[1]</a> as nuclei closer to <a href="/wiki/Magic_number_(physics)" title="Magic number (physics)">magic numbers</a> are more stable.<a href="#cite_note-NatureMagicNumbers-6">[2]</a> Yield vs. Z - This is a typical distribution for the fission of <a href="/wiki/Uranium" title="Uranium">uranium</a>. Note that in the calculations used to make this graph the activation of fission products was ignored and the fission was assumed to occur in a single moment rather than a length of time. In this bar chart results are shown for different cooling times (time after fission). <figure typeof="mw:File/Thumb"><a href="/wiki/File:Fission_yield_volatile_2.png" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/1/19/Fission_yield_volatile_2.png/450px-Fission_yield_volatile_2.png" decoding="async" width="450" height="273" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/1/19/Fission_yield_volatile_2.png/675px-Fission_yield_volatile_2.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/1/19/Fission_yield_volatile_2.png/900px-Fission_yield_volatile_2.png 2x" data-file-width="1020" data-file-height="618" /></a><figcaption>Yield vs Z. Colors indicate <a href="/wiki/Fluoride_volatility" title="Fluoride volatility">fluoride volatility</a>, which is important in <a href="/wiki/Nuclear_reprocessing" title="Nuclear reprocessing">nuclear reprocessing</a>: Blue elements have volatile fluorides or are already volatile; green elements do not but have volatile chlorides; red elements have neither, but the elements themselves are volatile at very high temperatures. Yields at 100,1,2,3 years after <a href="/wiki/Nuclear_fission" title="Nuclear fission">fission</a>, not considering later <a href="/wiki/Neutron_capture" title="Neutron capture">neutron capture</a>, fraction of 100% not 200%. <a href="/wiki/Beta_decay" title="Beta decay">Beta decay</a> <a href="/wiki/Kr-85" class="mw-redirect" title="Kr-85">Kr-85</a>→<a href="/wiki/Rubidium" title="Rubidium">Rb</a>, <a href="/wiki/Sr-90" class="mw-redirect" title="Sr-90">Sr-90</a>→<a href="/wiki/Zirconium" title="Zirconium">Zr</a>, <a href="/wiki/Ru-106" class="mw-redirect" title="Ru-106">Ru-106</a>→<a href="/wiki/Palladium" title="Palladium">Pd</a>, <a href="/wiki/Sb-125" class="mw-redirect" title="Sb-125">Sb-125</a>→<a href="/wiki/Tellurium" title="Tellurium">Te</a>, <a href="/wiki/Cs-137" class="mw-redirect" title="Cs-137">Cs-137</a>→<a href="/wiki/Barium" title="Barium">Ba</a>, <a href="/wiki/Ce-144" class="mw-redirect" title="Ce-144">Ce-144</a>→<a href="/wiki/Neodymium" title="Neodymium">Nd</a>, <a href="/wiki/Sm-151" class="mw-redirect" title="Sm-151">Sm-151</a>→<a href="/wiki/Europium" title="Europium">Eu</a>, <a href="/wiki/Eu-155" class="mw-redirect" title="Eu-155">Eu-155</a>→<a href="/wiki/Gadolinium" title="Gadolinium">Gd</a> visible.</figcaption></figure> Because of the stability of nuclei with even numbers of <a href="/wiki/Proton" title="Proton">protons</a> and/or <a href="/wiki/Neutron" title="Neutron">neutrons</a> the curve of yield against element is not a smooth curve. It tends to alternate. In general, the higher the energy of the state that undergoes nuclear fission, the more likely a symmetric fission is, hence as the <a href="/wiki/Neutron_energy" class="mw-redirect" title="Neutron energy">neutron energy</a> increases and/or the energy of the <a href="/wiki/Fissile" class="mw-redirect" title="Fissile">fissile</a> atom increases, the valley between the two peaks becomes more shallow; for instance, the curve of yield against mass for <a href="/wiki/Pu-239" class="mw-redirect" title="Pu-239">Pu-239</a> has a more shallow valley than that observed for <a href="/wiki/Uranium-235" title="Uranium-235">U-235</a>, when the neutrons are <a href="/wiki/Thermal_neutron" class="mw-redirect" title="Thermal neutron">thermal neutrons</a>. The curves for the fission of the later <a href="/wiki/Actinides" class="mw-redirect" title="Actinides">actinides</a> tend to make even more shallow valleys. In extreme cases such as 259Fm, only one peak is seen. Yield is usually expressed relative to number of fissioning nuclei, not the number of fission product nuclei, that is, yields should sum to 200%. The table in the next section ("Ordered by yield") gives yields for notable <a href="/wiki/Radioactive" class="mw-redirect" title="Radioactive">radioactive</a> (with <a href="/wiki/Half-life" title="Half-life">half-lives</a> greater than one year, plus <a href="/wiki/Iodine-131" title="Iodine-131">iodine-131</a>) <a href="/wiki/Fission_product" class="mw-redirect" title="Fission product">fission products</a>, and (the few most absorptive) <a href="/wiki/Neutron_poison" title="Neutron poison">neutron poison</a> fission products, from <a href="/wiki/Thermal_neutron" class="mw-redirect" title="Thermal neutron">thermal neutron</a> fission of <a href="/wiki/Uranium-235" title="Uranium-235">U-235</a> (typical of <a href="/wiki/Nuclear_power" title="Nuclear power">nuclear power</a> reactors), computed from <a rel="nofollow" class="external autonumber" href="http://books.elsevier.com/companions/075067136X/pdfs/Yield.bas?mscssid=HAX80JCKT7RB8LS6F675GU2LM83N1CL6">[1]</a>[<a href="/wiki/Wikipedia:Link_rot" title="Wikipedia:Link rot">permanent dead link</a>‍]. The yields in the table sum to only 45.5522%, including 34.8401% which have half-lives greater than one year: <table class="wikitable" style="text-align:right;"> <tbody><tr> <th>t½ in years</th> <th>Yield </th></tr> <tr> <td>1 to 5</td> <td>2.7252% </td></tr> <tr> <td>10 to 100</td> <td>12.5340% </td></tr> <tr> <td>2 to 300,000</td> <td>6.1251% </td></tr> <tr> <td>1.5 to 16 million</td> <td>13.4494% </td></tr></tbody></table> The remainder and the unlisted 54.4478% decay with half-lives less than one year into nonradioactive nuclei. This is before accounting for the effects of any subsequent neutron capture; e.g.: <ul><li><a href="/wiki/Xenon-135" title="Xenon-135">135Xe</a> capturing a neutron and becoming nearly stable 136Xe, rather than decaying to 135Cs which is radioactive with a half-life of 2.3 million years</li> <li>Nonradioactive 133Cs capturing a neutron and becoming 134Cs, which is radioactive with a half-life of 2 years</li> <li>Many of the fission products with mass 147 or greater such as <a href="/wiki/Promethium-147" class="mw-redirect" title="Promethium-147">147Pm</a>, <a href="/wiki/Samarium-149" class="mw-redirect" title="Samarium-149">149Sm</a>, <a href="/wiki/Samarium-151" class="mw-redirect" title="Samarium-151">151Sm</a>, and <a href="/wiki/Europium-155" class="mw-redirect" title="Europium-155">155Eu</a> have significant cross sections for neutron capture, so that one heavy fission product atom can undergo multiple successive neutron captures.</li></ul> Besides fission products, the other types of radioactive products are <ul><li><a href="/wiki/Plutonium" title="Plutonium">plutonium</a> containing <a href="/wiki/Pu-238" class="mw-redirect" title="Pu-238">238Pu</a>, <a href="/wiki/Pu-239" class="mw-redirect" title="Pu-239">239Pu</a>, <a href="/wiki/Pu-240" class="mw-redirect" title="Pu-240">240Pu</a>, <a href="/wiki/Pu-241" class="mw-redirect" title="Pu-241">241Pu</a>, and <a href="/wiki/Pu-242" class="mw-redirect" title="Pu-242">242Pu</a>,</li> <li><a href="/wiki/Minor_actinides" class="mw-redirect" title="Minor actinides">minor actinides</a> including <a href="/wiki/Np-237" class="mw-redirect" title="Np-237">237Np</a>, <a href="/wiki/Am-241" class="mw-redirect" title="Am-241">241Am</a>, <a href="/wiki/Americium" title="Americium">243Am</a>, <a href="/wiki/Curium" title="Curium">curium</a> isotopes, and perhaps <a href="/wiki/Californium" title="Californium">californium</a></li> <li><a href="/wiki/Reprocessed_uranium" title="Reprocessed uranium">reprocessed uranium</a> containing <a href="/wiki/Uranium-236" title="Uranium-236">236U</a> and other isotopes</li> <li><a href="/wiki/Tritium" title="Tritium">tritium</a></li> <li><a href="/wiki/Activation_products" class="mw-redirect" title="Activation products">activation products</a> of neutron capture by the reactor or bomb structure or the environment</li></ul> <div class="mw-heading mw-heading2"><h2 id="Fission_products_from_U-235">Fission products from U-235</h2>[<a href="/w/index.php?title=Fission_product_yield&action=edit&section=2" title="Edit section: Fission products from U-235">edit</a>]</div> <table class="wikitable sortable"> <tbody><tr> <th>Yield</th> <th>Element</th> <th>Isotope</th> <th>Halflife</th> <th>Comment </th></tr> <tr> <td>6.7896%</td> <td><a href="/wiki/Caesium" title="Caesium">Caesium</a></td> <td> <a href="/wiki/Caesium-133" class="mw-redirect" title="Caesium-133">133Cs</a> <a href="/wiki/Neutron_capture" title="Neutron capture">→</a> <a href="/wiki/Caesium-134" class="mw-redirect" title="Caesium-134">134Cs</a></td> <td> 2.065 y</td> <td><a href="/wiki/Neutron_capture" title="Neutron capture">Neutron capture</a> (29 barns) slowly converts stable 133Cs to 134Cs, which itself is low-yield because <a href="/wiki/Beta_decay" title="Beta decay">beta decay</a> stops at 134Xe; can be further converted (140 barns) to <a href="/wiki/Cs-135" class="mw-redirect" title="Cs-135">135Cs</a>. </td></tr> <tr> <td>6.3333%</td> <td><a href="/wiki/Iodine" title="Iodine">Iodine</a>, <a href="/wiki/Xenon" title="Xenon">xenon</a></td> <td> <a href="/wiki/Iodine-135" class="mw-redirect" title="Iodine-135">135I</a> <a href="/wiki/Beta_decay" title="Beta decay">→</a> <a href="/wiki/Xenon-135" title="Xenon-135">135Xe</a></td> <td> 6.57 h</td> <td>Most important <a href="/wiki/Neutron_poison" title="Neutron poison">neutron poison</a>; <a href="/wiki/Neutron_capture" title="Neutron capture">neutron capture</a> converts 10–50% of 135Xe to 136Xe; remainder decays (9.14h) to <a href="/wiki/Cs-135" class="mw-redirect" title="Cs-135">135Cs</a> (2.3 My). </td></tr> <tr> <td>6.2956%</td> <td><a href="/wiki/Zirconium" title="Zirconium">Zirconium</a></td> <td> <a href="/wiki/Zr-93" class="mw-redirect" title="Zr-93">93Zr</a></td> <td> 1.53 My</td> <td><a href="/wiki/Long-lived_fission_product" title="Long-lived fission product">Long-lived fission product</a> also produced by <a href="/wiki/Neutron_activation" title="Neutron activation">neutron activation</a> in <a href="/wiki/Zircalloy" class="mw-redirect" title="Zircalloy">zircalloy</a> cladding. </td></tr> <tr> <td>6.1%</td> <td><a href="/wiki/Molybdenum" title="Molybdenum">Molybdenum</a></td> <td> <a href="/wiki/Mo-99" class="mw-redirect" title="Mo-99">99Mo</a></td> <td> 65.94 h</td> <td>Its daughter nuclide <a href="/wiki/Tc-99m" class="mw-redirect" title="Tc-99m">99mTc</a> is important in medical diagnosing. </td></tr> <tr> <td>6.0899%</td> <td><a href="/wiki/Caesium" title="Caesium">Caesium</a></td> <td> <a href="/wiki/Cs-137" class="mw-redirect" title="Cs-137">137Cs</a></td> <td> 30.17 y</td> <td>Source of most of the <a href="/wiki/Decay_heat" title="Decay heat">decay heat</a> from years to decades after irradiation, together with 90 Sr. </td></tr> <tr> <td>6.0507%</td> <td><a href="/wiki/Technetium" title="Technetium">Technetium</a></td> <td> <a href="/wiki/Tc-99" class="mw-redirect" title="Tc-99">99Tc</a></td> <td> 211 ky</td> <td>Candidate for disposal by <a href="/wiki/Nuclear_transmutation" title="Nuclear transmutation">nuclear transmutation</a>. </td></tr> <tr> <td>5.7518%</td> <td><a href="/wiki/Strontium" title="Strontium">Strontium</a></td> <td> <a href="/wiki/Strontium-90" title="Strontium-90">90Sr</a></td> <td> 28.9 y</td> <td>Source of much of the decay heat together with 137 Cs on the timespan of years to decades after irradiation. Formerly used in <a href="/wiki/Radioisotope_thermoelectric_generator" title="Radioisotope thermoelectric generator">radioisotope thermoelectric generators</a>. </td></tr> <tr> <td>2.8336%</td> <td><a href="/wiki/Iodine" title="Iodine">Iodine</a></td> <td> <a href="/wiki/Iodine-131" title="Iodine-131">131I</a></td> <td> 8.02 d</td> <td>Reason for the use of <a href="/wiki/Potassium_iodide" title="Potassium iodide">potassium iodide</a> tablets after nuclear accidents or nuclear bomb explosions. </td></tr> <tr> <td>2.2713%</td> <td><a href="/wiki/Promethium" title="Promethium">Promethium</a></td> <td> <a href="/wiki/Promethium-147" class="mw-redirect" title="Promethium-147">147Pm</a></td> <td> 2.62 y</td> <td>beta decays to very long lived Samarium-147 (half life><a href="/wiki/Age_of_the_universe" title="Age of the universe">age of the universe</a>); has seen some use in <a href="/wiki/Radioisotope_thermoelectric_generator" title="Radioisotope thermoelectric generator">radioisotope thermoelectric generators</a> </td></tr> <tr> <td>1.0888%</td> <td><a href="/wiki/Samarium" title="Samarium">Samarium</a></td> <td> <a href="/wiki/Samarium-149" class="mw-redirect" title="Samarium-149">149Sm</a></td> <td> Observationally stable</td> <td>2nd most significant <a href="/wiki/Neutron_poison" title="Neutron poison">neutron poison</a>. </td></tr> <tr> <td>0.9%<a href="#cite_note-7">[3]</a></td> <td><a href="/wiki/Iodine" title="Iodine">Iodine</a></td> <td> <a href="/wiki/Iodine-129" title="Iodine-129">129I</a></td> <td> 15.7 My</td> <td><a href="/wiki/Long-lived_fission_product" title="Long-lived fission product">Long-lived fission product</a>. Candidate for disposal by <a href="/wiki/Nuclear_transmutation" title="Nuclear transmutation">nuclear transmutation</a>. </td></tr> <tr> <td>0.4203%</td> <td><a href="/wiki/Samarium" title="Samarium">Samarium</a></td> <td> <a href="/wiki/Samarium-151" class="mw-redirect" title="Samarium-151">151Sm</a></td> <td> 90 y</td> <td><a href="/wiki/Neutron_poison" title="Neutron poison">Neutron poison</a>; most will be converted to stable 152Sm. </td></tr> <tr> <td>0.3912%</td> <td><a href="/wiki/Ruthenium" title="Ruthenium">Ruthenium</a></td> <td> <a href="/wiki/Ruthenium-106" class="mw-redirect" title="Ruthenium-106">106Ru</a></td> <td> 373.6 d</td> <td><a href="/wiki/Ruthenium_tetroxide" title="Ruthenium tetroxide">ruthenium tetroxide</a> is volatile and chemically aggressive; <a href="/wiki/Daughter_nuclide" class="mw-redirect" title="Daughter nuclide">daughter nuclide</a> 106 Rh decays quickly to stable 106 Pd </td></tr> <tr> <td>0.2717%</td> <td><a href="/wiki/Krypton" title="Krypton">Krypton</a></td> <td> <a href="/wiki/Krypton-85" title="Krypton-85">85Kr</a></td> <td> 10.78 y</td> <td><a href="/wiki/Noble_gas" title="Noble gas">noble gas</a>; has some uses in industry to detect fine cracks in materials via <a href="/wiki/Autoradiography" class="mw-redirect" title="Autoradiography">autoradiography</a> </td></tr> <tr> <td>0.1629%</td> <td><a href="/wiki/Palladium" title="Palladium">Palladium</a></td> <td> <a href="/wiki/Palladium-107" class="mw-redirect" title="Palladium-107">107Pd</a></td> <td> 6.5 My</td> <td><a href="/wiki/Long-lived_fission_product" title="Long-lived fission product">Long-lived fission product</a>; hampers extraction of stable isotopes of <a href="/wiki/Platinum_group" title="Platinum group">platinum group</a> metals for use due to chemical similarity. </td></tr> <tr> <td>0.0508%</td> <td><a href="/wiki/Selenium" title="Selenium">Selenium</a></td> <td> <a href="/wiki/Selenium-79" title="Selenium-79">79Se</a></td> <td> 327 ky </td></tr> <tr> <td>0.0330%</td> <td><a href="/wiki/Europium" title="Europium">Europium</a>, <a href="/wiki/Gadolinium" title="Gadolinium">gadolinium</a></td> <td> <a href="/wiki/Europium-155" class="mw-redirect" title="Europium-155">155Eu</a> <a href="/wiki/Beta_decay" title="Beta decay">→</a> <a href="/wiki/Gadolinium-155" class="mw-redirect" title="Gadolinium-155">155Gd</a></td> <td> 4.76 y</td> <td>Both <a href="/wiki/Neutron_poison" title="Neutron poison">neutron poisons</a>, most will be destroyed while fuel still in use. </td></tr> <tr> <td>0.0297%</td> <td><a href="/wiki/Antimony" title="Antimony">Antimony</a></td> <td> <a href="/wiki/Antimony-125" class="mw-redirect" title="Antimony-125">125Sb</a></td> <td> 2.76 y </td></tr> <tr> <td>0.0236%</td> <td><a href="/wiki/Tin" title="Tin">Tin</a></td> <td> <a href="/wiki/Tin-126" class="mw-redirect" title="Tin-126">126Sn</a></td> <td> 230 ky </td></tr> <tr> <td>0.0065%</td> <td><a href="/wiki/Gadolinium" title="Gadolinium">Gadolinium</a></td> <td> <a href="/wiki/Gadolinium-157" class="mw-redirect" title="Gadolinium-157">157Gd</a></td> <td> stable</td> <td><a href="/wiki/Neutron_poison" title="Neutron poison">Neutron poison</a>. </td></tr> <tr> <td>0.0003%</td> <td><a href="/wiki/Cadmium" title="Cadmium">Cadmium</a></td> <td> <a href="/wiki/Cadmium-113m" class="mw-redirect" title="Cadmium-113m">113mCd</a></td> <td> 14.1 y</td> <td><a href="/wiki/Neutron_poison" title="Neutron poison">Neutron poison</a>, most will be destroyed while fuel still in use. </td></tr></tbody></table> <figure class="mw-halign-none" typeof="mw:File/Thumb"><a href="/wiki/File:Fission_yield.png" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/1/15/Fission_yield.png/450px-Fission_yield.png" decoding="async" width="450" height="273" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/1/15/Fission_yield.png/675px-Fission_yield.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/1/15/Fission_yield.png/900px-Fission_yield.png 2x" data-file-width="1020" data-file-height="618" /></a><figcaption>Yields at 100,1,2,3 years after <a href="/wiki/Nuclear_fission" title="Nuclear fission">fission</a>, probably of <a href="/wiki/Pu-239" class="mw-redirect" title="Pu-239">Pu-239</a> not <a href="/wiki/Uranium-235" title="Uranium-235">U-235</a> because left hump is shifted right, not considering later <a href="/wiki/Neutron_capture" title="Neutron capture">neutron capture</a>, fraction of 100% not 200%. <a href="/wiki/Beta_decay" title="Beta decay">Beta decay</a> <a href="/wiki/Kr-85" class="mw-redirect" title="Kr-85">Kr-85</a>→<a href="/wiki/Rubidium" title="Rubidium">Rb</a>, <a href="/wiki/Sr-90" class="mw-redirect" title="Sr-90">Sr-90</a>→<a href="/wiki/Zirconium" title="Zirconium">Zr</a>, <a href="/wiki/Ru-106" class="mw-redirect" title="Ru-106">Ru-106</a>→<a href="/wiki/Palladium" title="Palladium">Pd</a>, <a href="/wiki/Sb-125" class="mw-redirect" title="Sb-125">Sb-125</a>→<a href="/wiki/Tellurium" title="Tellurium">Te</a>, <a href="/wiki/Cs-137" class="mw-redirect" title="Cs-137">Cs-137</a>→<a href="/wiki/Barium" title="Barium">Ba</a>, <a href="/wiki/Ce-144" class="mw-redirect" title="Ce-144">Ce-144</a>→<a href="/wiki/Neodymium" title="Neodymium">Nd</a>, <a href="/wiki/Sm-151" class="mw-redirect" title="Sm-151">Sm-151</a>→<a href="/wiki/Europium" title="Europium">Eu</a>, <a href="/wiki/Eu-155" class="mw-redirect" title="Eu-155">Eu-155</a>→<a href="/wiki/Gadolinium" title="Gadolinium">Gd</a> visible.</figcaption></figure> <div class="mw-heading mw-heading2"><h2 id="Cumulative_fission_yields">Cumulative fission yields</h2>[<a href="/w/index.php?title=Fission_product_yield&action=edit&section=3" title="Edit section: Cumulative fission yields">edit</a>]</div> Cumulative fission yields give the amounts of nuclides produced either directly in the fission or by decay of other nuclides. <table class="wikitable" style="text-align:center;"> <caption>Cumulative fission yields per fission for U-235 (%)<a href="#cite_note-IAEA-C3-8">[4]</a> </caption> <tbody><tr> <th>Product </th> <th>Thermal fission yield </th> <th>Fast fission yield </th> <th>14-MeV fission yield </th></tr> <tr> <td>1 1H </td> <td>0.00171 ± 0.00018</td> <td>0.00269 ± 0.00044</td> <td>0.00264 ± 0.00045 </td></tr> <tr> <td>2 1H </td> <td>0.00084 ± 0.00015</td> <td>0.00082 ± 0.00012</td> <td>0.00081 ± 0.00012 </td></tr> <tr> <td>3 1H </td> <td>0.0108 ± 0.0004</td> <td>0.0108 ± 0.0004</td> <td>0.0174 ± 0.0036 </td></tr> <tr> <td>3 2He </td> <td>0.0108 ± 0.0004</td> <td>0.0108 ± 0.0004</td> <td>0.0174 ± 0.0036 </td></tr> <tr> <td>4 2He </td> <td>0.1702 ± 0.0049</td> <td>0.17 ± 0.0049</td> <td>0.1667 ± 0.0088 </td></tr> <tr> <td>85 35Br </td> <td>1.304 ± 0.012</td> <td>1.309 ± 0.043</td> <td>1.64 ± 0.31 </td></tr> <tr> <td>82 36Kr </td> <td>0.000285 ± 0.000076</td> <td>0.00044 ± 0.00016</td> <td>0.038 ± 0.012 </td></tr> <tr> <td>85 36Kr </td> <td>0.286 ± 0.021</td> <td>0.286 ± 0.026</td> <td>0.47 ± 0.1 </td></tr> <tr> <td>85m 36Kr </td> <td>1.303 ± 0.012</td> <td>1.307 ± 0.043</td> <td>1.65 ± 0.31 </td></tr> <tr> <td>90 38Sr </td> <td>5.73 ± 0.13</td> <td>5.22 ± 0.18</td> <td>4.41 ± 0.18 </td></tr> <tr> <td>95 40Zr </td> <td>6.502 ± 0.072</td> <td>6.349 ± 0.083</td> <td>5.07 ± 0.19 </td></tr> <tr> <td>94 41Nb </td> <td>0.00000042 ± 0.00000011</td> <td>2.90±0.770 × 10−8</td> <td>0.00004 ± 0.000015 </td></tr> <tr> <td>95 41Nb </td> <td>6.498 ± 0.072</td> <td>6.345 ± 0.083</td> <td>5.07 ± 0.19 </td></tr> <tr> <td>95m 41Nb </td> <td>0.0702 ± 0.0067</td> <td>0.0686 ± 0.0071</td> <td>0.0548 ± 0.0072 </td></tr> <tr> <td>92 42Mo </td> <td>0 ± 0</td> <td>0 ± 0</td> <td>0 ± 0 </td></tr> <tr> <td>94 42Mo </td> <td>8.70 × 10−10 ± 3.20 × 10−10</td> <td>0 ± 0</td> <td>6.20 × 10−8 ± 2.50 × 10−8 </td></tr> <tr> <td>96 42Mo </td> <td>0.00042 ± 0.00015</td> <td>0.000069 ± 0.000025</td> <td>0.0033 ± 0.0015 </td></tr> <tr> <td>99 42Mo </td> <td>6.132 ± 0.092</td> <td>5.8 ± 0.13</td> <td>5.02 ± 0.13 </td></tr> <tr> <td>99 43Tc </td> <td>6.132 ± 0.092</td> <td>5.8 ± 0.13</td> <td>5.02 ± 0.13 </td></tr> <tr> <td>103 44Ru </td> <td>3.103 ± 0.084</td> <td>3.248 ± 0.042</td> <td>3.14 ± 0.11 </td></tr> <tr> <td>106 44Ru </td> <td>0.41 ± 0.011</td> <td>0.469 ± 0.036</td> <td>2.15 ± 0.59 </td></tr> <tr> <td>106 45Rh </td> <td>0.41 ± 0.011</td> <td>0.469 ± 0.036</td> <td>2.15 ± 0.59 </td></tr> <tr> <td>121m 50Sn </td> <td>0.00106 ± 0.00011</td> <td>0.0039 ± 0.00091</td> <td>0.142 ± 0.023 </td></tr> <tr> <td>122 51Sb </td> <td>0.000000366 ± 0.000000098</td> <td>0.0000004 ± 0.00000014</td> <td>0.00193 ± 0.00068 </td></tr> <tr> <td>124 51Sb </td> <td>0.000089 ± 0.000021</td> <td>0.000112 ± 0.000034</td> <td>0.027 ± 0.01 </td></tr> <tr> <td>125 51Sb </td> <td>0.026 ± 0.0014</td> <td>0.067 ± 0.011</td> <td>1.42 ± 0.42 </td></tr> <tr> <td>132 52Te </td> <td>4.276 ± 0.043</td> <td>4.639 ± 0.065</td> <td>3.85 ± 0.16 </td></tr> <tr> <td>129 53I </td> <td>0.706 ± 0.032</td> <td>1.03 ± 0.26</td> <td>1.59 ± 0.18 </td></tr> <tr> <td>131 53I </td> <td>2.878 ± 0.032</td> <td>3.365 ± 0.054</td> <td>4.11 ± 0.14 </td></tr> <tr> <td>133 53I </td> <td>6.59 ± 0.11</td> <td>6.61 ± 0.13</td> <td>5.42 ± 0.4 </td></tr> <tr> <td>135 53I </td> <td>6.39 ± 0.22</td> <td>6.01 ± 0.18</td> <td>4.8 ± 1.4 </td></tr> <tr> <td>128 54Xe </td> <td>0 ± 0</td> <td>0 ± 0</td> <td>0.00108 ± 0.00048 </td></tr> <tr> <td>130 54Xe </td> <td>0.000038 ± 0.0000098</td> <td>0.000152 ± 0.000055</td> <td>0.038 ± 0.014 </td></tr> <tr> <td>131m 54Xe </td> <td>0.0313 ± 0.003</td> <td>0.0365 ± 0.0031</td> <td>0.047 ± 0.0049 </td></tr> <tr> <td>133 54Xe </td> <td>6.6 ± 0.11</td> <td>6.61 ± 0.13</td> <td>5.57 ± 0.41 </td></tr> <tr> <td>133m 54Xe </td> <td>0.189 ± 0.015</td> <td>0.19 ± 0.015</td> <td>0.281 ± 0.049 </td></tr> <tr> <td>135 54Xe </td> <td>6.61 ± 0.22</td> <td>6.32 ± 0.18</td> <td>6.4 ± 1.8 </td></tr> <tr> <td>135m 54Xe </td> <td>1.22 ± 0.12</td> <td>1.23 ± 0.13</td> <td>2.17 ± 0.66 </td></tr> <tr> <td>134 55Cs </td> <td>0.0000121 ± 0.0000032</td> <td>0.0000279 ± 0.0000073</td> <td>0.0132 ± 0.0035 </td></tr> <tr> <td>137 55Cs </td> <td>6.221 ± 0.069</td> <td>5.889 ± 0.096</td> <td>5.6 ± 1.3 </td></tr> <tr> <td>140 56Ba </td> <td>6.314 ± 0.095</td> <td>5.959 ± 0.048</td> <td>4.474 ± 0.081 </td></tr> <tr> <td>140 57La </td> <td>6.315 ± 0.095</td> <td>5.96 ± 0.048</td> <td>4.508 ± 0.081 </td></tr> <tr> <td>141 58Ce </td> <td>5.86 ± 0.15</td> <td>5.795 ± 0.081</td> <td>4.44 ± 0.2 </td></tr> <tr> <td>144 58Ce </td> <td>5.474 ± 0.055</td> <td>5.094 ± 0.076</td> <td>3.154 ± 0.038 </td></tr> <tr> <td>144 59Pr </td> <td>5.474 ± 0.055</td> <td>5.094 ± 0.076</td> <td>3.155 ± 0.038 </td></tr> <tr> <td>142 60Nd </td> <td>6.30 × 10−9 ± 1.70 × 10−9</td> <td>1.70 × 10−9 ± 4.80 × 10−10</td> <td>0.0000137 ± 0.0000049 </td></tr> <tr> <td>144 60Nd </td> <td>5.475 ± 0.055</td> <td>5.094 ± 0.076</td> <td>3.155 ± 0.038 </td></tr> <tr> <td>147 60Nd </td> <td>2.232 ± 0.04</td> <td>2.148 ± 0.028</td> <td>1.657 ± 0.045 </td></tr> <tr> <td>147 61Pm </td> <td>2.232 ± 0.04</td> <td>2.148 ± 0.028</td> <td>1.657 ± 0.045 </td></tr> <tr> <td>148 61Pm </td> <td>5.00 × 10−8 ± 1.70 × 10−8</td> <td>7.40 × 10−9 ± 2.50 × 10−9</td> <td>0.0000013 ± 0.00000042 </td></tr> <tr> <td>148m 61Pm </td> <td>0.000000104 ± 0.000000039</td> <td>1.78 × 10−8 ± 6.60 × 10−9</td> <td>0.0000048 ± 0.0000018 </td></tr> <tr> <td>149 61Pm </td> <td>1.053 ± 0.021</td> <td>1.064 ± 0.03</td> <td>0.557 ± 0.09 </td></tr> <tr> <td>151 61Pm </td> <td>0.4204 ± 0.0071</td> <td>0.431 ± 0.015</td> <td>0.388 ± 0.061 </td></tr> <tr> <td>148 62Sm </td> <td>0.000000149 ± 0.000000041</td> <td>2.43 × 10−8 ± 6.80 × 10−9</td> <td>0.0000058 ± 0.0000018 </td></tr> <tr> <td>150 62Sm </td> <td>0.000061 ± 0.000022</td> <td>0.0000201 ± 0.0000077</td> <td>0.00045 ± 0.00018 </td></tr> <tr> <td>151 62Sm </td> <td>0.4204 ± 0.0071</td> <td>0.431 ± 0.015</td> <td>0.388 ± 0.061 </td></tr> <tr> <td>153 62Sm </td> <td>0.1477 ± 0.0071</td> <td>0.1512 ± 0.0097</td> <td>0.23 ± 0.015 </td></tr> <tr> <td>151 63Eu </td> <td>0.4204 ± 0.0071</td> <td>0.431 ± 0.015</td> <td>0.388 ± 0.061 </td></tr> <tr> <td>152 63Eu </td> <td>3.24 × 10−10 ± 8.50 × 10−11</td> <td>0 ± 0</td> <td>3.30 × 10−8 ± 1.10 × 10−8 </td></tr> <tr> <td>154 63Eu </td> <td>0.000000195 ± 0.000000064</td> <td>4.00 × 10−8 ± 1.10 × 10−8</td> <td>0.0000033 ± 0.0000011 </td></tr> <tr> <td>155 63Eu </td> <td>0.0308 ± 0.0013</td> <td>0.044 ± 0.01</td> <td>0.088 ± 0.014 </td></tr></tbody></table> <table class="wikitable" style="text-align:center;"> <caption>Cumulative fission yield per fission for Pu-239 (%)<a href="#cite_note-IAEA-C3-8">[4]</a> </caption> <tbody><tr> <th>Product </th> <th>Thermal fission yield </th> <th>Fast fission yield </th> <th>14-MeV fission yield </th></tr> <tr> <td>1 1H </td> <td>0.00408 ± 0.00041</td> <td>0.00346 ± 0.00057</td> <td>- </td></tr> <tr> <td>2 1H </td> <td>0.00135 ± 0.00019</td> <td>0.00106 ± 0.00016</td> <td>- </td></tr> <tr> <td>3 1H </td> <td>0.0142 ± 0.0007</td> <td>0.0142 ± 0.0007</td> <td>- </td></tr> <tr> <td>3 2He </td> <td>0.0142 ± 0.0007</td> <td>0.0142 ± 0.0007</td> <td>- </td></tr> <tr> <td>4 2He </td> <td>0.2192 ± 0.009</td> <td>0.219 ± 0.009</td> <td>- </td></tr> <tr> <td>85 35Br </td> <td>0.574 ± 0.026</td> <td>0.617 ± 0.049</td> <td>- </td></tr> <tr> <td>82 36Kr </td> <td>0.00175 ± 0.0006</td> <td>0.00055 ± 0.0002</td> <td>- </td></tr> <tr> <td>85 36Kr </td> <td>0.136 ± 0.014</td> <td>0.138 ± 0.017</td> <td>- </td></tr> <tr> <td>85m 36Kr </td> <td>0.576 ± 0.026</td> <td>0.617 ± 0.049</td> <td>- </td></tr> <tr> <td>90 38Sr </td> <td>2.013 ± 0.054</td> <td>2.031 ± 0.057</td> <td>- </td></tr> <tr> <td>95 40Zr </td> <td>4.949 ± 0.099</td> <td>4.682 ± 0.098</td> <td>- </td></tr> <tr> <td>94 41Nb </td> <td>0.0000168 ± 0.0000045</td> <td>0.00000255 ± 0.00000069</td> <td>- </td></tr> <tr> <td>95 41Nb </td> <td>4.946 ± 0.099</td> <td>4.68 ± 0.098</td> <td>- </td></tr> <tr> <td>95m 41Nb </td> <td>0.0535 ± 0.0066</td> <td>0.0506 ± 0.0062</td> <td>- </td></tr> <tr> <td>92 42Mo </td> <td>0 ± 0</td> <td>0 ± 0</td> <td>- </td></tr> <tr> <td>94 42Mo </td> <td>3.60 × 10−8 ± 1.30 × 10−8</td> <td>4.80 × 10−9 ± 1.70 × 10−9</td> <td>- </td></tr> <tr> <td>96 42Mo </td> <td>0.0051 ± 0.0018</td> <td>0.0017 ± 0.00062</td> <td>- </td></tr> <tr> <td>99 42Mo </td> <td>6.185 ± 0.056</td> <td>5.82 ± 0.13</td> <td>- </td></tr> <tr> <td>99 43Tc </td> <td>6.184 ± 0.056</td> <td>5.82 ± 0.13</td> <td>- </td></tr> <tr> <td>103 44Ru </td> <td>6.948 ± 0.083</td> <td>6.59 ± 0.16</td> <td>- </td></tr> <tr> <td>106 44Ru </td> <td>4.188 ± 0.092</td> <td>4.13 ± 0.24</td> <td>- </td></tr> <tr> <td>106 45Rh </td> <td>4.188 ± 0.092</td> <td>4.13 ± 0.24</td> <td>- </td></tr> <tr> <td>121m 50Sn </td> <td>0.0052 ± 0.0011</td> <td>0.0053 ± 0.0012</td> <td>- </td></tr> <tr> <td>122 51Sb </td> <td>0.000024 ± 0.0000063</td> <td>0.0000153 ± 0.000005</td> <td>- </td></tr> <tr> <td>124 51Sb </td> <td>0.00228 ± 0.00049</td> <td>0.00154 ± 0.00043</td> <td>- </td></tr> <tr> <td>125 51Sb </td> <td>0.117 ± 0.015</td> <td>0.138 ± 0.022</td> <td>- </td></tr> <tr> <td>132 52Te </td> <td>5.095 ± 0.094</td> <td>4.92 ± 0.32</td> <td>- </td></tr> <tr> <td>129 53I </td> <td>1.407 ± 0.086</td> <td>1.31 ± 0.13</td> <td>- </td></tr> <tr> <td>131 53I </td> <td>3.724 ± 0.078</td> <td>4.09 ± 0.12</td> <td>- </td></tr> <tr> <td>133 53I </td> <td>6.97 ± 0.13</td> <td>6.99 ± 0.33</td> <td>- </td></tr> <tr> <td>135 53I </td> <td>6.33 ± 0.23</td> <td>6.24 ± 0.22</td> <td>- </td></tr> <tr> <td>128 54Xe </td> <td>0.00000234 ± 0.00000085</td> <td>0.0000025 ± 0.0000012</td> <td>- </td></tr> <tr> <td>130 54Xe </td> <td>0.00166 ± 0.00056</td> <td>0.00231 ± 0.00085</td> <td>- </td></tr> <tr> <td>131m 54Xe </td> <td>0.0405 ± 0.004</td> <td>0.0444 ± 0.0044</td> <td>- </td></tr> <tr> <td>133 54Xe </td> <td>6.99 ± 0.13</td> <td>7.03 ± 0.33</td> <td>- </td></tr> <tr> <td>133m 54Xe </td> <td>0.216 ± 0.016</td> <td>0.223 ± 0.021</td> <td>- </td></tr> <tr> <td>135 54Xe </td> <td>7.36 ± 0.24</td> <td>7.5 ± 0.23</td> <td>- </td></tr> <tr> <td>135m 54Xe </td> <td>1.78 ± 0.21</td> <td>1.97 ± 0.25</td> <td>- </td></tr> <tr> <td>134 55Cs </td> <td>0.00067 ± 0.00018</td> <td>0.00115 ± 0.0003</td> <td>- </td></tr> <tr> <td>137 55Cs </td> <td>6.588 ± 0.08</td> <td>6.35 ± 0.12</td> <td>- </td></tr> <tr> <td>140 56Ba </td> <td>5.322 ± 0.059</td> <td>5.303 ± 0.074</td> <td>- </td></tr> <tr> <td>140 57La </td> <td>5.333 ± 0.059</td> <td>5.324 ± 0.075</td> <td>- </td></tr> <tr> <td>141 58Ce </td> <td>5.205 ± 0.073</td> <td>5.01 ± 0.16</td> <td>- </td></tr> <tr> <td>144 58Ce </td> <td>3.755 ± 0.03</td> <td>3.504 ± 0.053</td> <td>- </td></tr> <tr> <td>144 59Pr </td> <td>3.756 ± 0.03</td> <td>3.505 ± 0.053</td> <td>- </td></tr> <tr> <td>142 60Nd </td> <td>0.00000145 ± 0.0000004</td> <td>0.00000251 ± 0.00000072</td> <td>- </td></tr> <tr> <td>144 60Nd </td> <td>3.756 ± 0.03</td> <td>3.505 ± 0.053</td> <td>- </td></tr> <tr> <td>147 60Nd </td> <td>2.044 ± 0.039</td> <td>1.929 ± 0.046</td> <td>- </td></tr> <tr> <td>147 61Pm </td> <td>2.044 ± 0.039</td> <td>1.929 ± 0.046</td> <td>- </td></tr> <tr> <td>148 61Pm </td> <td>0.0000056 ± 0.0000019</td> <td>0.000012 ± 0.000004</td> <td>- </td></tr> <tr> <td>148m 61Pm </td> <td>0.0000118 ± 0.0000044</td> <td>0.000029 ± 0.000011</td> <td>- </td></tr> <tr> <td>149 61Pm </td> <td>1.263 ± 0.032</td> <td>1.275 ± 0.056</td> <td>- </td></tr> <tr> <td>151 61Pm </td> <td>0.776 ± 0.018</td> <td>0.796 ± 0.037</td> <td>- </td></tr> <tr> <td>148 62Sm </td> <td>0.0000168 ± 0.0000046</td> <td>0.000039 ± 0.000011</td> <td>- </td></tr> <tr> <td>150 62Sm </td> <td>0.00227 ± 0.00078</td> <td>0.0051 ± 0.0019</td> <td>- </td></tr> <tr> <td>151 62Sm </td> <td>0.776 ± 0.018</td> <td>0.797 ± 0.037</td> <td>- </td></tr> <tr> <td>153 62Sm </td> <td>0.38 ± 0.03</td> <td>0.4 ± 0.18</td> <td>- </td></tr> <tr> <td>151 63Eu </td> <td>0.776 ± 0.018</td> <td>0.797 ± 0.037</td> <td>- </td></tr> <tr> <td>152 63Eu </td> <td>0.000000195 ± 0.00000005</td> <td>0.00000048 ± 0.00000014</td> <td>- </td></tr> <tr> <td>154 63Eu </td> <td>0.000049 ± 0.000012</td> <td>0.000127 ± 0.000043</td> <td>- </td></tr> <tr> <td>155 63Eu </td> <td>0.174 ± 0.03</td> <td>0.171 ± 0.054</td> <td>- </td></tr></tbody></table> <table class="wikitable"> <tbody><tr> <td style="width:12em;">JEFF-3.1 </td> <td style="width:60em;"> Joint Evaluated Fission and Fusion File, Incident-neutron data, <a rel="nofollow" class="external free" href="http://www-nds.iaea.org/exfor/endf00.htm">http://www-nds.iaea.org/exfor/endf00.htm</a>, 2 October 2006; see also A. Koning, R. Forrest, M. Kellett, R. Mills, H. Henriksson, Y. Rugama, The JEFF-3.1 Nuclear Data Library, JEFF Report 21, OECD/NEA, Paris, France, 2006, <style data-mw-deduplicate="TemplateStyles:r1238218222">.mw-parser-output cite.citation{font-style:inherit;word-wrap:break-word}.mw-parser-output .citation q{quotes:"\"""\"""'""'"}.mw-parser-output .citation:target{background-color:rgba(0,127,255,0.133)}.mw-parser-output .id-lock-free.id-lock-free a{background:url("//upload.wikimedia.org/wikipedia/commons/6/65/Lock-green.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-limited.id-lock-limited a,.mw-parser-output .id-lock-registration.id-lock-registration a{background:url("//upload.wikimedia.org/wikipedia/commons/d/d6/Lock-gray-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-subscription.id-lock-subscription a{background:url("//upload.wikimedia.org/wikipedia/commons/a/aa/Lock-red-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .cs1-ws-icon a{background:url("//upload.wikimedia.org/wikipedia/commons/4/4c/Wikisource-logo.svg")right 0.1em center/12px no-repeat}body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-free a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-limited a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-registration a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-subscription a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .cs1-ws-icon a{background-size:contain;padding:0 1em 0 0}.mw-parser-output .cs1-code{color:inherit;background:inherit;border:none;padding:inherit}.mw-parser-output .cs1-hidden-error{display:none;color:var(--color-error,#d33)}.mw-parser-output .cs1-visible-error{color:var(--color-error,#d33)}.mw-parser-output .cs1-maint{display:none;color:#085;margin-left:0.3em}.mw-parser-output .cs1-kern-left{padding-left:0.2em}.mw-parser-output .cs1-kern-right{padding-right:0.2em}.mw-parser-output .citation .mw-selflink{font-weight:inherit}@media screen{.mw-parser-output .cs1-format{font-size:95%}html.skin-theme-clientpref-night .mw-parser-output .cs1-maint{color:#18911f}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .cs1-maint{color:#18911f}}</style><a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/92-64-02314-3" title="Special:BookSources/92-64-02314-3">92-64-02314-3</a>. </td></tr></tbody></table> <figure typeof="mw:File/Thumb"><a href="/wiki/File:Fission_yield.png" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/1/15/Fission_yield.png/450px-Fission_yield.png" decoding="async" width="450" height="273" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/1/15/Fission_yield.png/675px-Fission_yield.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/1/15/Fission_yield.png/900px-Fission_yield.png 2x" data-file-width="1020" data-file-height="618" /></a><figcaption>Yields at 100,1,2,3 years after <a href="/wiki/Nuclear_fission" title="Nuclear fission">fission</a>, probably of <a href="/wiki/Pu-239" class="mw-redirect" title="Pu-239">Pu-239</a> not <a href="/wiki/Uranium-235" title="Uranium-235">U-235</a> because left hump is shifted right, not considering later <a href="/wiki/Neutron_capture" title="Neutron capture">neutron capture</a>, fraction of 100% not 200%. <a href="/wiki/Beta_decay" title="Beta decay">Beta decay</a> <a href="/wiki/Kr-85" class="mw-redirect" title="Kr-85">Kr-85</a>→<a href="/wiki/Rubidium" title="Rubidium">Rb</a>, <a href="/wiki/Sr-90" class="mw-redirect" title="Sr-90">Sr-90</a>→<a href="/wiki/Zirconium" title="Zirconium">Zr</a>, <a href="/wiki/Ru-106" class="mw-redirect" title="Ru-106">Ru-106</a>→<a href="/wiki/Palladium" title="Palladium">Pd</a>, <a href="/wiki/Sb-125" class="mw-redirect" title="Sb-125">Sb-125</a>→<a href="/wiki/Tellurium" title="Tellurium">Te</a>, <a href="/wiki/Cs-137" class="mw-redirect" title="Cs-137">Cs-137</a>→<a href="/wiki/Barium" title="Barium">Ba</a>, <a href="/wiki/Ce-144" class="mw-redirect" title="Ce-144">Ce-144</a>→<a href="/wiki/Neodymium" title="Neodymium">Nd</a>, <a href="/wiki/Sm-151" class="mw-redirect" title="Sm-151">Sm-151</a>→<a href="/wiki/Europium" title="Europium">Eu</a>, <a href="/wiki/Eu-155" class="mw-redirect" title="Eu-155">Eu-155</a>→<a href="/wiki/Gadolinium" title="Gadolinium">Gd</a> visible.</figcaption></figure> <div class="mw-heading mw-heading2"><h2 id="Ordered_by_mass_number">Ordered by mass number</h2>[<a href="/w/index.php?title=Fission_product_yield&action=edit&section=4" title="Edit section: Ordered by mass number">edit</a>]</div> Decays, even if lengthy, are given down to the stable nuclide. Decays with half lives longer than a century are marked with a single asterisk (*), while decays with a half life longer than a hundred million years are marked with two asterisks (**). <table class="wikitable sortable"> <tbody><tr> <th>Yield</th> <th>Isotope </th></tr> <tr> <td>0.0508%</td> <td style="background:#fdff8c"><a href="/wiki/Selenium-79" title="Selenium-79">selenium-79</a><a href="/wiki/Beta_decay" title="Beta decay">→</a>*</td> <td style="background:#fdff8c"><a href="/wiki/Bromine-79" class="mw-redirect" title="Bromine-79">bromine-79</a> </td></tr> <tr> <td>0.2717%</td> <td style="background:#fdff8c"><a href="/wiki/Krypton-85" title="Krypton-85">krypton-85</a><a href="/wiki/Beta_decay" title="Beta decay">→</a></td> <td style="background:#ff9999"><a href="/wiki/Rubidium-85" class="mw-redirect" title="Rubidium-85">rubidium-85</a> </td></tr> <tr> <td>5.7518%</td> <td style="background:#ff9999"><a href="/wiki/Strontium-90" title="Strontium-90">strontium-90</a> <a href="/wiki/Beta_decay" title="Beta decay">→</a></td> <td style="background:#99ccff"><a href="/wiki/Yttrium-90" title="Yttrium-90">yttrium-90</a><a href="/wiki/Beta_decay" title="Beta decay">→</a></td> <td style="background:#99ccff"><a href="/wiki/Zirconium-90" class="mw-redirect" title="Zirconium-90">zirconium-90</a> </td></tr> <tr> <td>6.2956%</td> <td style="background:#99ccff"><a href="/wiki/Zirconium-93" class="mw-redirect" title="Zirconium-93">zirconium-93</a> <a href="/wiki/Beta_decay" title="Beta decay">→</a>*</td> <td style="background:#99ccff"><a href="/wiki/Niobium-93" class="mw-redirect" title="Niobium-93">niobium-93</a> </td></tr> <tr> <td>6.0507%</td> <td style="background:#99ccff"><a href="/wiki/Technetium-99" title="Technetium-99">technetium-99</a><a href="/wiki/Beta_decay" title="Beta decay">→</a>*</td> <td style="background:#99ccff"><a href="/wiki/Ruthenium-99" class="mw-redirect" title="Ruthenium-99">ruthenium-99</a> </td></tr> <tr> <td>0.3912%</td> <td style="background:#99ccff"><a href="/wiki/Ruthenium-106" class="mw-redirect" title="Ruthenium-106">ruthenium-106</a><a href="/wiki/Beta_decay" title="Beta decay">→</a></td> <td style="background:#99ccff"><a href="/wiki/Rhodium-106" class="mw-redirect" title="Rhodium-106">rhodium-106</a><a href="/wiki/Beta_decay" title="Beta decay">→</a></td> <td style="background:#99ccff"><a href="/wiki/Palladium-106" class="mw-redirect" title="Palladium-106">palladium-106</a> </td></tr> <tr> <td>0.1629%</td> <td style="background:#99ccff"><a href="/wiki/Palladium-107" class="mw-redirect" title="Palladium-107">palladium-107</a><a href="/wiki/Beta_decay" title="Beta decay">→</a>*</td> <td style="background:#99ccff"><a href="/wiki/Silver-107" class="mw-redirect" title="Silver-107">silver-107</a> </td></tr> <tr> <td>0.0003%</td> <td style="background:#99ccff"><a href="/wiki/Cadmium-113m" class="mw-redirect" title="Cadmium-113m">cadmium-113m</a><a href="/wiki/Isomeric_transition" class="mw-redirect" title="Isomeric transition">→</a></td> <td style="background:#99ccff"><a href="/wiki/Cadmium-113" class="mw-redirect" title="Cadmium-113">cadmium-113</a> (essentially stable)<a href="/wiki/Beta_decay" title="Beta decay">→</a>**</td> <td style="background:#fdff8c"><a href="/wiki/Indium-113" class="mw-redirect" title="Indium-113">indium-113</a> </td></tr> <tr> <td>0.0297%</td> <td style="background:#fdff8c"><a href="/wiki/Antimony-125" class="mw-redirect" title="Antimony-125">antimony-125</a><a href="/wiki/Beta_decay" title="Beta decay">→</a></td> <td style="background:#fdff8c"><a href="/wiki/Tellurium-125m" class="mw-redirect" title="Tellurium-125m">tellurium-125m</a><a href="/wiki/Isomeric_transition" class="mw-redirect" title="Isomeric transition">→</a></td> <td style="background:#fdff8c"><a href="/wiki/Tellurium-125" class="mw-redirect" title="Tellurium-125">tellurium-125</a> </td></tr> <tr> <td>0.0236%</td> <td style="background:#fdff8c"><a href="/wiki/Tin-126" class="mw-redirect" title="Tin-126">tin-126</a> <a href="/wiki/Beta_decay" title="Beta decay">→</a>*</td> <td style="background:#fdff8c"><a href="/wiki/Antimony-126" class="mw-redirect" title="Antimony-126">antimony-126</a><a href="/wiki/Beta_decay" title="Beta decay">→</a></td> <td style="background:#fdff8c"><a href="/wiki/Tellurium-126" class="mw-redirect" title="Tellurium-126">tellurium-126</a> </td></tr> <tr> <td>0.9%</td> <td style="background:#fdff8c"><a href="/wiki/Iodine-129" title="Iodine-129">iodine-129</a><a href="/wiki/Beta_decay" title="Beta decay">→</a>*</td> <td style="background:#fdff8c"><a href="/wiki/Xenon-129" class="mw-redirect" title="Xenon-129">xenon-129</a> </td></tr> <tr> <td>2.8336%</td> <td style="background:#fdff8c"><a href="/wiki/Iodine-131" title="Iodine-131">iodine-131</a><a href="/wiki/Beta_decay" title="Beta decay">→</a></td> <td style="background:#fdff8c"><a href="/wiki/Xenon-131" class="mw-redirect" title="Xenon-131">xenon-131</a> </td></tr> <tr> <td>6.7896%</td> <td style="background:#ff9999"><a href="/wiki/Caesium-133" class="mw-redirect" title="Caesium-133">caesium-133</a> <a href="/wiki/Neutron_capture" title="Neutron capture">→</a></td> <td style="background:#ff9999"><a href="/wiki/Caesium-134" class="mw-redirect" title="Caesium-134">caesium-134</a><a href="/wiki/Beta_decay" title="Beta decay">→</a></td> <td style="background:#ff9999"><a href="/wiki/Barium-134" class="mw-redirect" title="Barium-134">barium-134</a> </td></tr> <tr> <td>6.3333%</td> <td style="background:#fdff8c"><a href="/wiki/Iodine-135" class="mw-redirect" title="Iodine-135">iodine-135</a> <a href="/wiki/Beta_decay" title="Beta decay">→</a></td> <td style="background:#fdff8c"><a href="/wiki/Xenon-135" title="Xenon-135">xenon-135</a> <a href="/wiki/Beta_decay" title="Beta decay">→</a></td> <td style="background:#ff9999"><a href="/wiki/Caesium-135" class="mw-redirect" title="Caesium-135">caesium-135</a><a href="/wiki/Beta_decay" title="Beta decay">→</a>*</td> <td style="background:#ff9999"><a href="/wiki/Barium-135" class="mw-redirect" title="Barium-135">barium-135</a> </td></tr> <tr> <td>6.3333%</td> <td style="background:#fdff8c"><a href="/wiki/Iodine-135" class="mw-redirect" title="Iodine-135">iodine-135</a> <a href="/wiki/Beta_decay" title="Beta decay">→</a></td> <td style="background:#fdff8c"><a href="/wiki/Xenon-135" title="Xenon-135">xenon-135</a> <a href="/wiki/Neutron_capture" title="Neutron capture">→</a></td> <td style="background:#fdff8c"><a href="/wiki/Xenon-136" class="mw-redirect" title="Xenon-136">xenon-136</a> (essentially stable)<a href="/wiki/Double_beta_decay" title="Double beta decay">→</a>**</td> <td style="background:#ff9999"><a href="/wiki/Barium-136" class="mw-redirect" title="Barium-136">barium-136</a> </td></tr> <tr> <td>6.0899%</td> <td style="background:#ff9999"><a href="/wiki/Caesium-137" title="Caesium-137">caesium-137</a><a href="/wiki/Beta_decay" title="Beta decay">→</a></td> <td style="background:#ff9999"><a href="/wiki/Barium-137" class="mw-redirect" title="Barium-137">barium-137</a> </td></tr> <tr> <td>2.2713%</td> <td style="background:#9bff99"><a href="/wiki/Promethium-147" class="mw-redirect" title="Promethium-147">promethium-147</a><a href="/wiki/Beta_decay" title="Beta decay">→</a></td> <td style="background:#9bff99"><a href="/wiki/Samarium-147" title="Samarium-147">samarium-147</a><a href="/wiki/Alpha_decay" title="Alpha decay">→</a>*</td> <td style="background:#9bff99"><a href="/wiki/Neodymium-143" class="mw-redirect" title="Neodymium-143">neodymium-143</a> </td></tr> <tr> <td>1.0888%</td> <td style="background:#9bff99"><a href="/wiki/Samarium-149" class="mw-redirect" title="Samarium-149">samarium-149</a> </td></tr> <tr> <td>0.4203%</td> <td style="background:#9bff99"><a href="/wiki/Samarium-151" class="mw-redirect" title="Samarium-151">samarium-151</a> </td></tr> <tr> <td>0.0330%</td> <td style="background:#9bff99"><a href="/wiki/Europium-155" class="mw-redirect" title="Europium-155">europium-155</a> <a href="/wiki/Beta_decay" title="Beta decay">→</a></td> <td style="background:#9bff99"><a href="/wiki/Gadolinium-155" class="mw-redirect" title="Gadolinium-155">gadolinium-155</a> </td></tr> <tr> <td>0.0065%</td> <td style="background:#9bff99"><a href="/wiki/Gadolinium-157" class="mw-redirect" title="Gadolinium-157">gadolinium-157</a> </td></tr></tbody></table> <div class="mw-heading mw-heading2"><h2 id="Half_lives,_decay_modes,_and_branching_fractions">Half lives, decay modes, and branching fractions</h2>[<a href="/w/index.php?title=Fission_product_yield&action=edit&section=5" title="Edit section: Half lives, decay modes, and branching fractions">edit</a>]</div> <table class="wikitable"> <caption>Half-lives and decay branching fractions for fission products<a href="#cite_note-IAEA-D1-9">[5]</a> </caption> <tbody><tr> <th>Nuclide</th> <th>Half-life</th> <th>Decay mode</th> <th>Branching fraction</th> <th>Source</th> <th>Notes </th></tr> <tr> <td>85 35Br </td> <td>2.9 ± 0.06 m</td> <td>β−</td> <td>1.0</td> <td><a href="#cite_note-ENSDF-10">[6]</a></td> <td><a href="#cite_note-11">[a]</a> </td></tr> <tr> <td>85 36Kr </td> <td>10.752 ± 0.023 y</td> <td>β−</td> <td>1.0</td> <td><a href="#cite_note-BIPM-5-12">[7]</a> </td></tr> <tr> <td rowspan="2">85m 36Kr </td> <td rowspan="2">4.48 ± 0.008 h</td> <td>IT</td> <td>0.214 ± 0.005</td> <td rowspan="2"><a href="#cite_note-ENSDF-10">[6]</a> </td></tr> <tr> <td>β−</td> <td>0.786 ± 0.005 </td></tr> <tr> <td>90 38Sr </td> <td>28.8 ± 0.07 y</td> <td>β−</td> <td>1.0</td> <td><a href="#cite_note-LNHB-13">[8]</a> </td></tr> <tr> <td>95 40Zr </td> <td>64.032 ± 0.006 d</td> <td>β−</td> <td>1.0</td> <td><a href="#cite_note-LNHB-13">[8]</a> </td></tr> <tr> <td>94 41Nb </td> <td>(7.3 ± 0.9) × 106 d</td> <td>β−</td> <td>1.0</td> <td><a href="#cite_note-IAEA-CRP-XG-14">[9]</a> </td></tr> <tr> <td rowspan="2">95m 41Nb </td> <td rowspan="2">3.61 ± 0.03 d</td> <td>β−</td> <td>0.025 ± 0.001</td> <td rowspan="2"><a href="#cite_note-LNHB-13">[8]</a></td> <td rowspan="2"><a href="#cite_note-15">[b]</a> </td></tr> <tr> <td>IT</td> <td>0.975 ± 0.001 </td></tr> <tr> <td>95 41Nb </td> <td>34.985 ± 0.012 d</td> <td>β−</td> <td>1.0</td> <td><a href="#cite_note-IAEA-CRP-XG-14">[9]</a> </td></tr> <tr> <td>99 43Tc </td> <td>(2.111 ± 0.012) × 105 y</td> <td>β−</td> <td>1.0</td> <td><a href="#cite_note-ENSDF-10">[6]</a> </td></tr> <tr> <td>103 44Ru </td> <td>39.247 ± 0.013 d</td> <td>β−</td> <td>1.0</td> <td><a href="#cite_note-IAEA-CRP-XG-14">[9]</a> </td></tr> <tr> <td>106 44Ru </td> <td>1.018 ± 0.005 y</td> <td>β−</td> <td>1.0</td> <td><a href="#cite_note-IAEA-CRP-XG-14">[9]</a> </td></tr> <tr> <td>106 45Rh </td> <td>30.1 ± 0.3 s</td> <td>β−</td> <td>1.0</td> <td><a href="#cite_note-IAEA-CRP-XG-14">[9]</a> </td></tr> <tr> <td rowspan="2">121m 50Sn </td> <td rowspan="2">55 ± 5 y</td> <td>β−</td> <td>0.224 ± 0.02</td> <td rowspan="2"><a href="#cite_note-ENSDF-10">[6]</a> </td></tr> <tr> <td>IT</td> <td>0.776 ± 0.02 </td></tr> <tr> <td rowspan="2">122 51Sb </td> <td rowspan="2">2.7238 ± 0.0002 d</td> <td>EC</td> <td>0.0241 ± 0.0012</td> <td rowspan="2"><a href="#cite_note-ENSDF-10">[6]</a> </td></tr> <tr> <td>β−</td> <td>0.9759 ± 0.0012 </td></tr> <tr> <td>124 51Sb </td> <td>60.2 ± 0.03 d</td> <td>β−</td> <td>1.0</td> <td><a href="#cite_note-ENSDF-10">[6]</a> </td></tr> <tr> <td>125 51Sb </td> <td>2.7584 ± 0.0006 y</td> <td>β−</td> <td>1.0</td> <td><a href="#cite_note-IAEA-CRP-XG-14">[9]</a> </td></tr> <tr> <td>129 53I </td> <td>(5.89 ± 0.23) × 109 d</td> <td>β−</td> <td>1.0</td> <td><a href="#cite_note-IAEA-CRP-XG-14">[9]</a> </td></tr> <tr> <td>131 53I </td> <td>8.0233 ± 0.0019 d</td> <td>β−</td> <td>1.0</td> <td><a href="#cite_note-BIPM-5-12">[7]</a> </td></tr> <tr> <td>133 53I </td> <td>20.87 ± 0.08 h</td> <td>β−</td> <td>1.0</td> <td><a href="#cite_note-LNHB-13">[8]</a></td> <td><a href="#cite_note-16">[c]</a> </td></tr> <tr> <td>135 53I </td> <td>6.57 ± 0.02 h</td> <td>β−</td> <td>1.0</td> <td><a href="#cite_note-ENSDF-10">[6]</a> </td></tr> <tr> <td>131m 54Xe </td> <td>11.930 ± 0.016 d</td> <td>IT</td> <td>1.0</td> <td><a href="#cite_note-BIPM-5-12">[7]</a> </td></tr> <tr> <td>133 54Xe </td> <td>5.243 ± 0.001 d</td> <td>β−</td> <td>1.0</td> <td><a href="#cite_note-ENSDF-10">[6]</a> </td></tr> <tr> <td>133m 54Xe </td> <td>2.19 ± 0.01 d</td> <td>IT</td> <td>1.0</td> <td><a href="#cite_note-ENSDF-10">[6]</a> </td></tr> <tr> <td>135 54Xe </td> <td>9.14 ± 0.02 h</td> <td>β−</td> <td>1.0</td> <td><a href="#cite_note-ENSDF-10">[6]</a> </td></tr> <tr> <td rowspan="2">135m 54Xe </td> <td rowspan="2">15.29 ± 0.05 m</td> <td>β−</td> <td>0.003 ± 0.003</td> <td rowspan="2"><a href="#cite_note-ENSDF-10">[6]</a></td> <td rowspan="2"><a href="#cite_note-17">[d]</a> </td></tr> <tr> <td>IT</td> <td>0.997 ± 0.003 </td></tr> <tr> <td rowspan="2">134 55Cs </td> <td rowspan="2">2.063 ± 0.003 y</td> <td>EC</td> <td>0.000003 ± 0.000001</td> <td rowspan="2"><a href="#cite_note-IAEA-CRP-XG-14">[9]</a></td> <td rowspan="2"><a href="#cite_note-18">[e]</a> </td></tr> <tr> <td>β−</td> <td>0.999997 ± 0.000001 </td></tr> <tr> <td>137 55Cs </td> <td>30.05 ± 0.08 y</td> <td>β−</td> <td>1.0</td> <td><a href="#cite_note-IAEA-CRP-XG-14">[9]</a> </td></tr> <tr> <td>140 56Ba </td> <td>12.753 ± 0.004 d</td> <td>β−</td> <td>1.0</td> <td><a href="#cite_note-BIPM-5-12">[7]</a> </td></tr> <tr> <td>140 57La </td> <td>1.67850 ± 0.00017 d</td> <td>β−</td> <td>1.0</td> <td><a href="#cite_note-BIPM-5-12">[7]</a> </td></tr> <tr> <td>141 58Ce </td> <td>32.508 ± 0.010 d</td> <td>β−</td> <td>1.0</td> <td><a href="#cite_note-LNHB-13">[8]</a> </td></tr> <tr> <td>144 58Ce </td> <td>285.1 ± 0.6 d</td> <td>β−</td> <td>1.0</td> <td><a href="#cite_note-IAEA-CRP-XG-14">[9]</a> </td></tr> <tr> <td>144 59Pr </td> <td>17.28 ± 0.05 m</td> <td>β−</td> <td>1.0</td> <td><a href="#cite_note-ENSDF-10">[6]</a> </td></tr> <tr> <td>147 60Nd </td> <td>10.98 ± 0.01 d</td> <td>β−</td> <td>1.0</td> <td><a href="#cite_note-ENSDF-10">[6]</a> </td></tr> <tr> <td>147 61Pm </td> <td>2.6234 ± 0.0002 y</td> <td>β−</td> <td>1.0</td> <td><a href="#cite_note-ENSDF-10">[6]</a> </td></tr> <tr> <td rowspan="2">148m 61Pm </td> <td rowspan="2">41.29 ± 0.11 d</td> <td>IT</td> <td>0.042 ± 0.007</td> <td rowspan="2"><a href="#cite_note-ENSDF-10">[6]</a> </td></tr> <tr> <td>β−</td> <td>0.958 ± 0.007 </td></tr> <tr> <td>148 61Pm </td> <td>5.368 ± 0.002 d</td> <td>β−</td> <td>1.0</td> <td><a href="#cite_note-ENSDF-10">[6]</a> </td></tr> <tr> <td>149 61Pm </td> <td>2.2117 ± 0.0021 d</td> <td>β−</td> <td>1.0</td> <td><a href="#cite_note-ENSDF-10">[6]</a> </td></tr> <tr> <td>151 61Pm </td> <td>1.1833 ± 0.0017 d</td> <td>β−</td> <td>1.0</td> <td><a href="#cite_note-ENSDF-10">[6]</a> </td></tr> <tr> <td>151 62Sm </td> <td>90 ± 6 y</td> <td>β−</td> <td>1.0</td> <td><a href="#cite_note-ENSDF-10">[6]</a> </td></tr> <tr> <td>153 62Sm </td> <td>1.938 ± 0.010 d</td> <td>β−</td> <td>1.0</td> <td><a href="#cite_note-IAEA-CRP-XG-14">[9]</a> </td></tr> <tr> <td rowspan="2">152 63Eu </td> <td rowspan="2">(4.941 ± 0.007) × 103 d</td> <td>β−</td> <td>0.279 ± 0.003</td> <td rowspan="2"><a href="#cite_note-IAEA-CRP-XG-14">[9]</a></td> <td rowspan="2"><a href="#cite_note-LNHBadopted-19">[f]</a> </td></tr> <tr> <td>EC</td> <td>0.721 ± 0.003 </td></tr> <tr> <td rowspan="2">154 63Eu </td> <td rowspan="2">(3.1381 ± 0.0014) × 103 d</td> <td>EC</td> <td>0.00018 ± 0.00013</td> <td rowspan="2"><a href="#cite_note-IAEA-CRP-XG-14">[9]</a></td> <td rowspan="2"><a href="#cite_note-LNHBadopted-19">[f]</a> </td></tr> <tr> <td>β−</td> <td>0.99982 ± 0.00013 </td></tr> <tr> <td>155 63Eu </td> <td>4.753 ± 0.016 y</td> <td>β−</td> <td>1.0</td> <td><a href="#cite_note-IAEA-CRP-XG-14">[9]</a> </td></tr></tbody></table> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1239543626" /><div class="reflist reflist-lower-alpha"> <div class="mw-references-wrap"><ol class="references"> <li id="cite_note-11"><a href="#cite_ref-11">^</a> β− decay branches of 0.9982 ± 0.0002 to Kr-85m and 0.0018 ± 0.0002 to Kr-85. </li> <li id="cite_note-15"><a href="#cite_ref-15">^</a> ENSDF branching fractions: 0.944 ± 0.007 for IT and 0.056 ± 0.007 for β−. </li> <li id="cite_note-16"><a href="#cite_ref-16">^</a> β− decay branch of 0.0288 ± 0.0002 to Xe-133m. </li> <li id="cite_note-17"><a href="#cite_ref-17">^</a> Branching fractions were averaged from ENSDF database. </li> <li id="cite_note-18"><a href="#cite_ref-18">^</a> Branching fractions were adopted from ENSDF database. </li> <li id="cite_note-LNHBadopted-19">^ <a href="#cite_ref-LNHBadopted_19-0">a</a> <a href="#cite_ref-LNHBadopted_19-1">b</a> Branching fractions were adopted from LNHB data. </li> </ol></div></div> <div class="mw-heading mw-heading2"><h2 id="Ordered_by_thermal_neutron_absorption_cross_section">Ordered by thermal neutron absorption cross section</h2>[<a href="/w/index.php?title=Fission_product_yield&action=edit&section=6" title="Edit section: Ordered by thermal neutron absorption cross section">edit</a>]</div> <table class="wikitable sortable"> <tbody><tr> <th>Barns</th> <th>Yield</th> <th>Isotope</th> <th>t½</th> <th>Comment </th></tr> <tr> <td align="right">2,650,000</td> <td>6.3333%</td> <td> <a href="/wiki/Iodine-135" class="mw-redirect" title="Iodine-135">135I</a> <a href="/wiki/Beta_decay" title="Beta decay">→</a> <a href="/wiki/Xenon-135" title="Xenon-135">135Xe</a></td> <td> 6.57 h</td> <td>Most important <a href="/wiki/Neutron_poison" title="Neutron poison">neutron poison</a>; <a href="/wiki/Neutron_capture" title="Neutron capture">neutron capture</a> rapidly converts 135Xe to 136Xe; remainder decays (9.14 h) to <a href="/wiki/Cs-135" class="mw-redirect" title="Cs-135">135Cs</a> (2.3 My). </td></tr> <tr> <td align="right">254,000</td> <td>0.0065%</td> <td> <a href="/wiki/Gadolinium-157" class="mw-redirect" title="Gadolinium-157">157Gd</a></td> <td>∞</td> <td><a href="/wiki/Neutron_poison" title="Neutron poison">Neutron poison</a>, but low yield. </td></tr> <tr> <td align="right">40,140</td> <td>1.0888%</td> <td> <a href="/wiki/Samarium-149" class="mw-redirect" title="Samarium-149">149Sm</a></td> <td>∞</td> <td>2nd most important <a href="/wiki/Neutron_poison" title="Neutron poison">neutron poison</a>. </td></tr> <tr> <td align="right">20,600</td> <td>0.0003%</td> <td> <a href="/wiki/Cadmium-113m" class="mw-redirect" title="Cadmium-113m">113mCd</a></td> <td> 14.1 y</td> <td>Most will be destroyed by neutron capture. </td></tr> <tr> <td align="right">15,200</td> <td>0.4203%</td> <td> <a href="/wiki/Samarium-151" class="mw-redirect" title="Samarium-151">151Sm</a></td> <td> 90 y</td> <td>Most will be destroyed by neutron capture. </td></tr> <tr> <td align="right">3,950 60,900</td> <td>0.0330%</td> <td> <a href="/wiki/Europium-155" class="mw-redirect" title="Europium-155">155Eu</a> <a href="/wiki/Beta_decay" title="Beta decay">→</a> <a href="/wiki/Gadolinium-155" class="mw-redirect" title="Gadolinium-155">155Gd</a></td> <td> 4.76 y</td> <td>Both <a href="/wiki/Neutron_poison" title="Neutron poison">neutron poisons</a>. </td></tr> <tr> <td align="right">96</td> <td>2.2713%</td> <td> <a href="/wiki/Promethium-147" class="mw-redirect" title="Promethium-147">147Pm</a></td> <td> 2.62 y</td> <td>Suitable for <a href="/wiki/Radioisotope_thermoelectric_generator" title="Radioisotope thermoelectric generator">radioisotope thermoelectric generators</a> with annual or semi-annual refueling. </td></tr> <tr> <td align="right">80</td> <td>2.8336%</td> <td> <a href="/wiki/Iodine-131" title="Iodine-131">131I</a></td> <td> 8.02 d </td></tr> <tr> <td align="right">29 140</td> <td>6.7896%</td> <td> <a href="/wiki/Caesium-133" class="mw-redirect" title="Caesium-133">133Cs</a> <a href="/wiki/Neutron_capture" title="Neutron capture">→</a> <a href="/wiki/Caesium-134" class="mw-redirect" title="Caesium-134">134Cs</a></td> <td>∞ 2.065 y</td> <td><a href="/wiki/Neutron_capture" title="Neutron capture">Neutron capture</a> converts a few percent of nonradioactive 133Cs to 134Cs, which has very low direct yield because <a href="/wiki/Beta_decay" title="Beta decay">beta decay</a> stops at 134Xe; further capture will add to long-lived 135Cs. </td></tr> <tr> <td align="right">20</td> <td>6.0507%</td> <td> <a href="/wiki/Tc-99" class="mw-redirect" title="Tc-99">99Tc</a></td> <td> 211 ky</td> <td>Candidate for disposal by <a href="/wiki/Nuclear_transmutation" title="Nuclear transmutation">nuclear transmutation</a>. </td></tr> <tr> <td align="right">18</td> <td>0.6576%</td> <td> <a href="/wiki/Iodine-129" title="Iodine-129">129I</a></td> <td> 15.7 My</td> <td>Candidate for disposal by <a href="/wiki/Nuclear_transmutation" title="Nuclear transmutation">nuclear transmutation</a>. </td></tr> <tr> <td align="right">2.7</td> <td>6.2956%</td> <td> <a href="/wiki/Zr-93" class="mw-redirect" title="Zr-93">93Zr</a></td> <td> 1.53 My</td> <td>Transmutation impractical. </td></tr> <tr> <td align="right">1.8</td> <td>0.1629%</td> <td> <a href="/wiki/Palladium-107" class="mw-redirect" title="Palladium-107">107Pd</a></td> <td> 6.5 My </td></tr> <tr> <td align="right">1.66</td> <td>0.2717%</td> <td> <a href="/wiki/Krypton-85" title="Krypton-85">85Kr</a></td> <td> 10.78 y </td></tr> <tr> <td align="right">0.90</td> <td>5.7518%</td> <td> <a href="/wiki/Strontium-90" title="Strontium-90">90Sr</a></td> <td> 28.9 y </td></tr> <tr> <td align="right">0.15</td> <td>0.3912%</td> <td> <a href="/wiki/Ruthenium-106" class="mw-redirect" title="Ruthenium-106">106Ru</a></td> <td> 373.6 d </td></tr> <tr> <td align="right">0.11</td> <td>6.0899%</td> <td> <a href="/wiki/Cs-137" class="mw-redirect" title="Cs-137">137Cs</a></td> <td> 30.17 y </td></tr> <tr> <td></td> <td>0.0297%</td> <td> <a href="/wiki/Antimony-125" class="mw-redirect" title="Antimony-125">125Sb</a></td> <td> 2.76 y </td></tr> <tr> <td></td> <td>0.0236%</td> <td> <a href="/wiki/Tin-126" class="mw-redirect" title="Tin-126">126Sn</a></td> <td> 230 ky </td></tr> <tr> <td></td> <td>0.0508%</td> <td> <a href="/wiki/Selenium-79" title="Selenium-79">79Se</a></td> <td> 327 ky </td></tr> </tbody></table> <div class="mw-heading mw-heading2"><h2 id="References">References</h2>[<a href="/w/index.php?title=Fission_product_yield&action=edit&section=7" title="Edit section: References">edit</a>]</div> <div class="mw-references-wrap"><ol class="references"> <li id="cite_note-5"><a href="#cite_ref-5">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222" /><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://web.archive.org/web/20070528055359/http://www.science.uwaterloo.ca/~cchieh/cact/nuctek/fissionyield.html">"fissionyield"</a>. Archived from <a rel="nofollow" class="external text" href="http://www.science.uwaterloo.ca/~cchieh/cact/nuctek/fissionyield.html">the original</a> on 2007-05-28. Retrieved 2007-06-10.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=fissionyield&rft_id=http%3A%2F%2Fwww.science.uwaterloo.ca%2F~cchieh%2Fcact%2Fnuctek%2Ffissionyield.html&rfr_id=info%3Asid%2Fen.wikipedia.org%3AFission+product+yield" class="Z3988"> </li> <li id="cite_note-NatureMagicNumbers-6"><a href="#cite_ref-NatureMagicNumbers_6-0">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222" /><cite id="CITEREFMöllerMadlandSierkIwamoto2001" class="citation journal cs1">Möller, P; Madland, DG; Sierk, AJ; Iwamoto, A (15 February 2001). <a rel="nofollow" class="external text" href="https://zenodo.org/record/1233095">"Nuclear fission modes and fragment mass asymmetries in a five-dimensional deformation space"</a>. Nature. 409 (6822): 785–790. <a href="/wiki/Bibcode_(identifier)" class="mw-redirect" title="Bibcode (identifier)">Bibcode</a>:<a rel="nofollow" class="external text" href="https://ui.adsabs.harvard.edu/abs/2001Natur.409..785M">2001Natur.409..785M</a>. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1038%2F35057204">10.1038/35057204</a>. <a href="/wiki/PMID_(identifier)" class="mw-redirect" title="PMID (identifier)">PMID</a> <a rel="nofollow" class="external text" href="https://pubmed.ncbi.nlm.nih.gov/11236985">11236985</a>. <a href="/wiki/S2CID_(identifier)" class="mw-redirect" title="S2CID (identifier)">S2CID</a> <a rel="nofollow" class="external text" href="https://api.semanticscholar.org/CorpusID:9754793">9754793</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Nature&rft.atitle=Nuclear+fission+modes+and+fragment+mass+asymmetries+in+a+five-dimensional+deformation+space&rft.volume=409&rft.issue=6822&rft.pages=%3Cspan+class%3D%22nowrap%22%3E785-%3C%2Fspan%3E790&rft.date=2001-02-15&rft_id=info%3Adoi%2F10.1038%2F35057204&rft_id=https%3A%2F%2Fapi.semanticscholar.org%2FCorpusID%3A9754793%23id-name%3DS2CID&rft_id=info%3Apmid%2F11236985&rft_id=info%3Abibcode%2F2001Natur.409..785M&rft.aulast=M%C3%B6ller&rft.aufirst=P&rft.au=Madland%2C+DG&rft.au=Sierk%2C+AJ&rft.au=Iwamoto%2C+A&rft_id=https%3A%2F%2Fzenodo.org%2Frecord%2F1233095&rfr_id=info%3Asid%2Fen.wikipedia.org%3AFission+product+yield" class="Z3988"> </li> <li id="cite_note-7"><a href="#cite_ref-7">^</a> Purkayastha, B. C., and G. R. Martin. "The yields of 129I in natural and in neutron-induced fission of uranium." Canadian Journal of Chemistry 34.3 (1956): 293-300. </li> <li id="cite_note-IAEA-C3-8">^ <a href="#cite_ref-IAEA-C3_8-0">a</a> <a href="#cite_ref-IAEA-C3_8-1">b</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222" /><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://www-nds.iaea.org/sgnucdat/c3.htm">"Cumulative Fission Yields"</a>. www-nds.iaea.org. IAEA. Retrieved 11 November 2016.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=www-nds.iaea.org&rft.atitle=Cumulative+Fission+Yields&rft_id=https%3A%2F%2Fwww-nds.iaea.org%2Fsgnucdat%2Fc3.htm&rfr_id=info%3Asid%2Fen.wikipedia.org%3AFission+product+yield" class="Z3988"> </li> <li id="cite_note-IAEA-D1-9"><a href="#cite_ref-IAEA-D1_9-0">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222" /><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://www-nds.iaea.org/sgnucdat/d1.htm">"Half-lives and decay branching fractions for activation products"</a>. www-nds.iaea.org. IAEA. Retrieved 11 November 2016.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=www-nds.iaea.org&rft.atitle=Half-lives+and+decay+branching+fractions+for+activation+products&rft_id=https%3A%2F%2Fwww-nds.iaea.org%2Fsgnucdat%2Fd1.htm&rfr_id=info%3Asid%2Fen.wikipedia.org%3AFission+product+yield" class="Z3988"> </li> <li id="cite_note-ENSDF-10">^ <a href="#cite_ref-ENSDF_10-0">a</a> <a href="#cite_ref-ENSDF_10-1">b</a> <a href="#cite_ref-ENSDF_10-2">c</a> <a href="#cite_ref-ENSDF_10-3">d</a> <a href="#cite_ref-ENSDF_10-4">e</a> <a href="#cite_ref-ENSDF_10-5">f</a> <a href="#cite_ref-ENSDF_10-6">g</a> <a href="#cite_ref-ENSDF_10-7">h</a> <a href="#cite_ref-ENSDF_10-8">i</a> <a href="#cite_ref-ENSDF_10-9">j</a> <a href="#cite_ref-ENSDF_10-10">k</a> <a href="#cite_ref-ENSDF_10-11">l</a> <a href="#cite_ref-ENSDF_10-12">m</a> <a href="#cite_ref-ENSDF_10-13">n</a> <a href="#cite_ref-ENSDF_10-14">o</a> <a href="#cite_ref-ENSDF_10-15">p</a> <a href="#cite_ref-ENSDF_10-16">q</a> <a href="#cite_ref-ENSDF_10-17">r</a> <a href="#cite_ref-ENSDF_10-18">s</a> Evaluated Nuclear Structure Data File, <a rel="nofollow" class="external free" href="http://www-nds.iaea.org/ensdf/">http://www-nds.iaea.org/ensdf/</a>, 26 January 2006. </li> <li id="cite_note-BIPM-5-12">^ <a href="#cite_ref-BIPM-5_12-0">a</a> <a href="#cite_ref-BIPM-5_12-1">b</a> <a href="#cite_ref-BIPM-5_12-2">c</a> <a href="#cite_ref-BIPM-5_12-3">d</a> <a href="#cite_ref-BIPM-5_12-4">e</a> M.-M. Bé, V. Chisté, C. Dulieu, E. Browne, V. Chechev, N. Kuzmenko, R. Helmer, A. Nichols, E. Schönfeld, R. Dersch, Monographie BIPM-5, Table of Radionuclides, Vol. 2 - A = 151 to 242, 2004. </li> <li id="cite_note-LNHB-13">^ <a href="#cite_ref-LNHB_13-0">a</a> <a href="#cite_ref-LNHB_13-1">b</a> <a href="#cite_ref-LNHB_13-2">c</a> <a href="#cite_ref-LNHB_13-3">d</a> <a href="#cite_ref-LNHB_13-4">e</a> Laboratoire National Henri Becquerel, Recommended Data, <a rel="nofollow" class="external free" href="http://www.nucleide.org/DDEP_WG/DDEPdata.htm">http://www.nucleide.org/DDEP_WG/DDEPdata.htm</a> <a rel="nofollow" class="external text" href="https://web.archive.org/web/20210213021408/http://www.nucleide.org/DDEP_WG/DDEPdata.htm">Archived</a> 2021-02-13 at the <a href="/wiki/Wayback_Machine" title="Wayback Machine">Wayback Machine</a>, 16 January 2006. </li> <li id="cite_note-IAEA-CRP-XG-14">^ <a href="#cite_ref-IAEA-CRP-XG_14-0">a</a> <a href="#cite_ref-IAEA-CRP-XG_14-1">b</a> <a href="#cite_ref-IAEA-CRP-XG_14-2">c</a> <a href="#cite_ref-IAEA-CRP-XG_14-3">d</a> <a href="#cite_ref-IAEA-CRP-XG_14-4">e</a> <a href="#cite_ref-IAEA-CRP-XG_14-5">f</a> <a href="#cite_ref-IAEA-CRP-XG_14-6">g</a> <a href="#cite_ref-IAEA-CRP-XG_14-7">h</a> <a href="#cite_ref-IAEA-CRP-XG_14-8">i</a> <a href="#cite_ref-IAEA-CRP-XG_14-9">j</a> <a href="#cite_ref-IAEA-CRP-XG_14-10">k</a> <a href="#cite_ref-IAEA-CRP-XG_14-11">l</a> <a href="#cite_ref-IAEA-CRP-XG_14-12">m</a> <a href="#cite_ref-IAEA-CRP-XG_14-13">n</a> M.-M. Bé, V.P. Chechev, R. Dersch, O.A.M. Helene, R.G. Helmer, M. Herman, S. Hlavác, A. Marcinkowski, G.L. Molnár, A.L. Nichols, E. Schönfeld, V.R. Vanin, M.J. Woods, IAEA CRP "Update of X-ray and Gamma-ray Decay Data Standards for Detector Calibration and Other Applications", IAEA Scientific and Technical Information report STI/PUB/1287, May 2007, International Atomic Energy Agency, Vienna, Austria, <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222" /><a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/92-0-113606-4" title="Special:BookSources/92-0-113606-4">92-0-113606-4</a>. </li> </ol></div> <div class="mw-heading mw-heading2"><h2 id="External_links">External links</h2>[<a href="/w/index.php?title=Fission_product_yield&action=edit&section=8" title="Edit section: External links">edit</a>]</div> <ul><li><a rel="nofollow" class="external text" href="https://www-nds.iaea.org/sgnucdat/safeg2008.pdf">HANDBOOK OF NUCLEAR DATA FOR SAFEGUARDS: DATABASE EXTENSIONS, AUGUST 2008</a></li> <li><a href="/wiki/File:Ndslivechart.png" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/b/b0/Ndslivechart.png" decoding="async" width="45" height="31" class="mw-file-element" data-file-width="45" data-file-height="31" /></a> <a rel="nofollow" class="external text" href="http://www-nds.iaea.org/livechart">The Live Chart of Nuclides - IAEA </a> Color-map of yields, and detailed data by click on a nuclide.</li></ul>    </div><noscript><img src="https://login.wikimedia.org/wiki/Special:CentralAutoLogin/start?useformat=desktop&type=1x1&usesul3=0" alt="" width="1" height="1" style="border: none; position: absolute;"></noscript> <div class="printfooter" data-nosnippet="">Retrieved from "<a dir="ltr" href="https://en.wikipedia.org/w/index.php?title=Fission_product_yield&oldid=1248032885">https://en.wikipedia.org/w/index.php?title=Fission_product_yield&oldid=1248032885</a>"</div></div> <div id="catlinks" class="catlinks" data-mw="interface"><div id="mw-normal-catlinks" class="mw-normal-catlinks"><a href="/wiki/Help:Category" title="Help:Category">Categories</a>: <ul><li><a href="/wiki/Category:Nuclear_fission" title="Category:Nuclear fission">Nuclear fission</a></li><li><a href="/wiki/Category:Nuclear_chemistry" title="Category:Nuclear chemistry">Nuclear chemistry</a></li></ul></div><div id="mw-hidden-catlinks" class="mw-hidden-catlinks mw-hidden-cats-hidden">Hidden categories: <ul><li><a href="/wiki/Category:Webarchive_template_wayback_links" title="Category:Webarchive template wayback links">Webarchive template wayback links</a></li><li><a href="/wiki/Category:Articles_with_short_description" title="Category:Articles with short description">Articles with short description</a></li><li><a href="/wiki/Category:Short_description_is_different_from_Wikidata" title="Category:Short description is different from Wikidata">Short description is different from Wikidata</a></li><li><a href="/wiki/Category:All_articles_with_dead_external_links" title="Category:All articles with dead external links">All articles with dead external links</a></li><li><a href="/wiki/Category:Articles_with_dead_external_links_from_December_2019" title="Category:Articles with dead external links from December 2019">Articles with dead external links from December 2019</a></li><li><a href="/wiki/Category:Articles_with_permanently_dead_external_links" title="Category:Articles with permanently dead external links">Articles with permanently dead external links</a></li></ul></div></div> </div> </main> </div> <div class="mw-footer-container"> <footer id="footer" class="mw-footer" > <ul id="footer-info"> <li id="footer-info-lastmod"> This page was last edited on 27 September 2024, at 08:18 (UTC).</li> <li id="footer-info-copyright">Text is available under the <a href="/wiki/Wikipedia:Text_of_the_Creative_Commons_Attribution-ShareAlike_4.0_International_License" title="Wikipedia:Text of the Creative Commons Attribution-ShareAlike 4.0 International License">Creative Commons Attribution-ShareAlike 4.0 License</a>; additional terms may apply. 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