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</div> <div class="control"> <button class="button is-small is-link">Go</button> </div> </div> </form> </div> </div> <ol class="breathe-horizontal" start="1"> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2409.03625">arXiv:2409.03625</a> <span> [<a href="https://arxiv.org/pdf/2409.03625">pdf</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Plasma Physics">physics.plasm-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Materials Science">cond-mat.mtrl-sci</span> </div> </div> <p class="title is-5 mathjax"> Formation of high-aspect-ratio nanocavity in LiF crystal using a femtosecond of x-ray FEL pulse </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Makarov%2C+S+S">Sergey S. Makarov</a>, <a href="/search/physics?searchtype=author&query=Grigoryev%2C+S+A">Sergey A. Grigoryev</a>, <a href="/search/physics?searchtype=author&query=Zhakhovsky%2C+V+V">Vasily V. Zhakhovsky</a>, <a href="/search/physics?searchtype=author&query=Chuprov%2C+P">Petr Chuprov</a>, <a href="/search/physics?searchtype=author&query=Pikuz%2C+T+A">Tatiana A. Pikuz</a>, <a href="/search/physics?searchtype=author&query=Inogamov%2C+N+A">Nail A. Inogamov</a>, <a href="/search/physics?searchtype=author&query=Khokhlov%2C+V+V">Victor V. Khokhlov</a>, <a href="/search/physics?searchtype=author&query=Petrov%2C+Y+V">Yuri V. Petrov</a>, <a href="/search/physics?searchtype=author&query=Perov%2C+E">Eugene Perov</a>, <a href="/search/physics?searchtype=author&query=Shepelev%2C+V">Vadim Shepelev</a>, <a href="/search/physics?searchtype=author&query=Shobu%2C+T">Takehisa Shobu</a>, <a href="/search/physics?searchtype=author&query=Tominaga%2C+A">Aki Tominaga</a>, <a href="/search/physics?searchtype=author&query=Rapp%2C+L">Ludovic Rapp</a>, <a href="/search/physics?searchtype=author&query=Rode%2C+A+V">Andrei V. Rode</a>, <a href="/search/physics?searchtype=author&query=Juodkazis%2C+S">Saulius Juodkazis</a>, <a href="/search/physics?searchtype=author&query=Makita%2C+M">Mikako Makita</a>, <a href="/search/physics?searchtype=author&query=Nakatsutsumi%2C+M">Motoaki Nakatsutsumi</a>, <a href="/search/physics?searchtype=author&query=Preston%2C+T+R">Thomas R. Preston</a>, <a href="/search/physics?searchtype=author&query=Appel%2C+K">Karen Appel</a>, <a href="/search/physics?searchtype=author&query=Konopkova%2C+Z">Zuzana Konopkova</a>, <a href="/search/physics?searchtype=author&query=Cerantola%2C+V">Valerio Cerantola</a>, <a href="/search/physics?searchtype=author&query=Brambrink%2C+E">Erik Brambrink</a>, <a href="/search/physics?searchtype=author&query=Schwinkendorf%2C+J">Jan-Patrick Schwinkendorf</a>, <a href="/search/physics?searchtype=author&query=Mohacsi%2C+I">Istv谩n Mohacsi</a>, <a href="/search/physics?searchtype=author&query=Vozda%2C+V">Vojtech Vozda</a> , et al. (8 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2409.03625v1-abstract-short" style="display: inline;"> Sub-picosecond optical laser processing of metals is actively utilized for modification of a heated surface layer. But for deeper modification of different materials a laser in the hard x-ray range is required. Here, we demonstrate that a single 9-keV x-ray pulse from a free-electron laser can form a um-diameter cylindrical cavity with length of ~1 mm in LiF surrounded by shock-transformed materia… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2409.03625v1-abstract-full').style.display = 'inline'; document.getElementById('2409.03625v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2409.03625v1-abstract-full" style="display: none;"> Sub-picosecond optical laser processing of metals is actively utilized for modification of a heated surface layer. But for deeper modification of different materials a laser in the hard x-ray range is required. Here, we demonstrate that a single 9-keV x-ray pulse from a free-electron laser can form a um-diameter cylindrical cavity with length of ~1 mm in LiF surrounded by shock-transformed material. The plasma-generated shock wave with TPa-level pressure results in damage, melting and polymorphic transformations of any material, including transparent and non-transparent to conventional optical lasers. Moreover, cylindrical shocks can be utilized to obtain a considerable amount of exotic high-pressure polymorphs. Pressure wave propagation in LiF, radial material flow, formation of cracks and voids are analyzed via continuum and atomistic simulations revealing a sequence of processes leading to the final structure with the long cavity. Similar results can be produced with semiconductors and ceramics, which opens a new pathway for development of laser material processing with hard x-ray pulses. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2409.03625v1-abstract-full').style.display = 'none'; document.getElementById('2409.03625v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 5 September, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> September 2024. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2406.06233">arXiv:2406.06233</a> <span> [<a href="https://arxiv.org/pdf/2406.06233">pdf</a>, <a href="https://arxiv.org/format/2406.06233">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Plasma Physics">physics.plasm-ph</span> </div> </div> <p class="title is-5 mathjax"> Plasma screening in mid-charged ions observed by K-shell line emission </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=%C5%A0m%C4%B1d%2C+M">M. 艩m谋d</a>, <a href="/search/physics?searchtype=author&query=Humphries%2C+O">O. Humphries</a>, <a href="/search/physics?searchtype=author&query=Baehtz%2C+C">C. Baehtz</a>, <a href="/search/physics?searchtype=author&query=Brambrink%2C+E">E. Brambrink</a>, <a href="/search/physics?searchtype=author&query=Burian%2C+T">T. Burian</a>, <a href="/search/physics?searchtype=author&query=Cho%2C+M+S">M. S. Cho</a>, <a href="/search/physics?searchtype=author&query=Cowan%2C+T+E">T. E. Cowan</a>, <a href="/search/physics?searchtype=author&query=Gaus%2C+L">L. Gaus</a>, <a href="/search/physics?searchtype=author&query=Gu%2C+M+F">M. F. Gu</a>, <a href="/search/physics?searchtype=author&query=H%C3%A1jkov%C3%A1%2C+V">V. H谩jkov谩</a>, <a href="/search/physics?searchtype=author&query=Juha%2C+L">L. Juha</a>, <a href="/search/physics?searchtype=author&query=Konopkova%2C+Z">Z. Konopkova</a>, <a href="/search/physics?searchtype=author&query=Le%2C+H+P">H. P. Le</a>, <a href="/search/physics?searchtype=author&query=Makita%2C+M">M. Makita</a>, <a href="/search/physics?searchtype=author&query=Pan%2C+X">X. Pan</a>, <a href="/search/physics?searchtype=author&query=Preston%2C+T">T. Preston</a>, <a href="/search/physics?searchtype=author&query=Schropp%2C+A">A. Schropp</a>, <a href="/search/physics?searchtype=author&query=Scott%2C+H+A">H. A. Scott</a>, <a href="/search/physics?searchtype=author&query=%C5%A0tefan%C4%B1kov%C3%A1%2C+R">R. 艩tefan谋kov谩</a>, <a href="/search/physics?searchtype=author&query=Vorberger%2C+J">J. Vorberger</a>, <a href="/search/physics?searchtype=author&query=Wang%2C+W">W. Wang</a>, <a href="/search/physics?searchtype=author&query=Zastrau%2C+U">U. Zastrau</a>, <a href="/search/physics?searchtype=author&query=Falk%2C+K">K. Falk</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2406.06233v2-abstract-short" style="display: inline;"> Dense plasma environment affects the electronic structure of ions via variations of the microscopic electrical fields, also known as plasma screening. This effect can be either estimated by simplified analytical models, or by computationally expensive and to date unverified numerical calculations. We have experimentally quantified plasma screening from the energy shifts of the bound-bound transiti… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2406.06233v2-abstract-full').style.display = 'inline'; document.getElementById('2406.06233v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2406.06233v2-abstract-full" style="display: none;"> Dense plasma environment affects the electronic structure of ions via variations of the microscopic electrical fields, also known as plasma screening. This effect can be either estimated by simplified analytical models, or by computationally expensive and to date unverified numerical calculations. We have experimentally quantified plasma screening from the energy shifts of the bound-bound transitions in matter driven by the x-ray free electron laser (XFEL). This was enabled by identification of detailed electronic configurations of the observed K伪, K\b{eta} and K纬 lines. This work paves the way for improving plasma screening models including connected effects like ionization potential depression and continuum lowering, which will advance the understanding of atomic physics in Warm Dense Matter regime. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2406.06233v2-abstract-full').style.display = 'none'; document.getElementById('2406.06233v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 14 November, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 10 June, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> June 2024. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2406.03301">arXiv:2406.03301</a> <span> [<a href="https://arxiv.org/pdf/2406.03301">pdf</a>, <a href="https://arxiv.org/format/2406.03301">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Plasma Physics">physics.plasm-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> </div> </div> <p class="title is-5 mathjax"> Effects of Mosaic Crystal Instrument Functions on X-ray Thomson Scattering Diagnostics </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Gawne%2C+T">Thomas Gawne</a>, <a href="/search/physics?searchtype=author&query=Bellenbaum%2C+H">Hannah Bellenbaum</a>, <a href="/search/physics?searchtype=author&query=Fletcher%2C+L+B">Luke B. Fletcher</a>, <a href="/search/physics?searchtype=author&query=Appel%2C+K">Karen Appel</a>, <a href="/search/physics?searchtype=author&query=Baehtz%2C+C">Carsten Baehtz</a>, <a href="/search/physics?searchtype=author&query=Bouffetier%2C+V">Victorien Bouffetier</a>, <a href="/search/physics?searchtype=author&query=Brambrink%2C+E">Erik Brambrink</a>, <a href="/search/physics?searchtype=author&query=Brown%2C+D">Danielle Brown</a>, <a href="/search/physics?searchtype=author&query=Cangi%2C+A">Attila Cangi</a>, <a href="/search/physics?searchtype=author&query=Descamps%2C+A">Adrien Descamps</a>, <a href="/search/physics?searchtype=author&query=G%C3%B6de%2C+S">Sebastian G枚de</a>, <a href="/search/physics?searchtype=author&query=Hartley%2C+N+J">Nicholas J. Hartley</a>, <a href="/search/physics?searchtype=author&query=Herbert%2C+M">Marie-Luise Herbert</a>, <a href="/search/physics?searchtype=author&query=Hesselbach%2C+P">Philipp Hesselbach</a>, <a href="/search/physics?searchtype=author&query=H%C3%B6ppner%2C+H">Hauke H枚ppner</a>, <a href="/search/physics?searchtype=author&query=Humphries%2C+O+S">Oliver S. Humphries</a>, <a href="/search/physics?searchtype=author&query=Kon%C3%B4pkov%C3%A1%2C+Z">Zuzana Kon么pkov谩</a>, <a href="/search/physics?searchtype=author&query=Garcia%2C+A+L">Alejandro Laso Garcia</a>, <a href="/search/physics?searchtype=author&query=Lindqvist%2C+B">Bj枚rn Lindqvist</a>, <a href="/search/physics?searchtype=author&query=L%C3%BCtgert%2C+J">Julian L眉tgert</a>, <a href="/search/physics?searchtype=author&query=MacDonald%2C+M+J">Michael J. MacDonald</a>, <a href="/search/physics?searchtype=author&query=Makita%2C+M">Mikako Makita</a>, <a href="/search/physics?searchtype=author&query=Martin%2C+W">Willow Martin</a>, <a href="/search/physics?searchtype=author&query=Mishchenko%2C+M">Mikhail Mishchenko</a>, <a href="/search/physics?searchtype=author&query=Moldabekov%2C+Z+A">Zhandos A. Moldabekov</a> , et al. (14 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2406.03301v2-abstract-short" style="display: inline;"> Mosaic crystals, with their high integrated reflectivities, are widely-employed in spectrometers used to diagnose high energy density systems. X-ray Thomson scattering (XRTS) has emerged as a powerful diagnostic tool of these systems, providing in principle direct access to important properties such as the temperature via detailed balance. However, the measured XRTS spectrum is broadened by the sp… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2406.03301v2-abstract-full').style.display = 'inline'; document.getElementById('2406.03301v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2406.03301v2-abstract-full" style="display: none;"> Mosaic crystals, with their high integrated reflectivities, are widely-employed in spectrometers used to diagnose high energy density systems. X-ray Thomson scattering (XRTS) has emerged as a powerful diagnostic tool of these systems, providing in principle direct access to important properties such as the temperature via detailed balance. However, the measured XRTS spectrum is broadened by the spectrometer instrument function (IF), and without careful consideration of the IF one risks misdiagnosing system conditions. Here, we consider in detail the IF of 40 $渭$m and 100 $渭$m mosaic HAPG crystals, and how the broadening varies across the spectrometer in an energy range of 6.7-8.6 keV. Notably, we find a strong asymmetry in the shape of the IF towards higher energies. As an example, we consider the effect of the asymmetry in the IF on the temperature inferred via XRTS for simulated 80 eV CH plasmas, and find that the temperature can be overestimated if an approximate symmetric IF is used. We therefore expect a detailed consideration of the full IF will have an important impact on system properties inferred via XRTS in both forward modelling and model-free approaches. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2406.03301v2-abstract-full').style.display = 'none'; document.getElementById('2406.03301v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 9 August, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 5 June, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> June 2024. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">19 pages, 13 figures</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2403.02776">arXiv:2403.02776</a> <span> [<a href="https://arxiv.org/pdf/2403.02776">pdf</a>, <a href="https://arxiv.org/format/2403.02776">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Plasma Physics">physics.plasm-ph</span> </div> </div> <p class="title is-5 mathjax"> Ultrahigh Resolution X-ray Thomson Scattering Measurements at the European XFEL </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Gawne%2C+T">Thomas Gawne</a>, <a href="/search/physics?searchtype=author&query=Moldabekov%2C+Z+A">Zhandos A. Moldabekov</a>, <a href="/search/physics?searchtype=author&query=Humphries%2C+O+S">Oliver S. Humphries</a>, <a href="/search/physics?searchtype=author&query=Appel%2C+K">Karen Appel</a>, <a href="/search/physics?searchtype=author&query=B%C3%A4htz%2C+C">Carsten B盲htz</a>, <a href="/search/physics?searchtype=author&query=Bouffetier%2C+V">Victorien Bouffetier</a>, <a href="/search/physics?searchtype=author&query=Brambrink%2C+E">Erik Brambrink</a>, <a href="/search/physics?searchtype=author&query=Cangi%2C+A">Attila Cangi</a>, <a href="/search/physics?searchtype=author&query=G%C3%B6de%2C+S">Sebastian G枚de</a>, <a href="/search/physics?searchtype=author&query=Kon%C3%B4pkov%C3%A1%2C+Z">Zuzana Kon么pkov谩</a>, <a href="/search/physics?searchtype=author&query=Makita%2C+M">Mikako Makita</a>, <a href="/search/physics?searchtype=author&query=Mishchenko%2C+M">Mikhail Mishchenko</a>, <a href="/search/physics?searchtype=author&query=Nakatsutsumi%2C+M">Motoaki Nakatsutsumi</a>, <a href="/search/physics?searchtype=author&query=Ramakrishna%2C+K">Kushal Ramakrishna</a>, <a href="/search/physics?searchtype=author&query=Randolph%2C+L">Lisa Randolph</a>, <a href="/search/physics?searchtype=author&query=Schwalbe%2C+S">Sebastian Schwalbe</a>, <a href="/search/physics?searchtype=author&query=Vorberger%2C+J">Jan Vorberger</a>, <a href="/search/physics?searchtype=author&query=Wollenweber%2C+L">Lennart Wollenweber</a>, <a href="/search/physics?searchtype=author&query=Zastrau%2C+U">Ulf Zastrau</a>, <a href="/search/physics?searchtype=author&query=Dornheim%2C+T">Tobias Dornheim</a>, <a href="/search/physics?searchtype=author&query=Preston%2C+T+R">Thomas R. Preston</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2403.02776v3-abstract-short" style="display: inline;"> Using a novel ultrahigh resolution ($螖E \sim 0.1\,$eV) setup to measure electronic features in x-ray Thomson scattering (XRTS) experiments at the European XFEL in Germany, we have studied the collective plasmon excitation in aluminium at ambient conditions, which we can measure very accurately even at low momentum transfers. As a result, we can resolve previously reported discrepancies between ab… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2403.02776v3-abstract-full').style.display = 'inline'; document.getElementById('2403.02776v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2403.02776v3-abstract-full" style="display: none;"> Using a novel ultrahigh resolution ($螖E \sim 0.1\,$eV) setup to measure electronic features in x-ray Thomson scattering (XRTS) experiments at the European XFEL in Germany, we have studied the collective plasmon excitation in aluminium at ambient conditions, which we can measure very accurately even at low momentum transfers. As a result, we can resolve previously reported discrepancies between ab initio time-dependent density functional theory simulations and experimental observations. The demonstrated capability for high-resolution XRTS measurements will be a game changer for the diagnosis of experiments with matter under extreme densities, temperatures, and pressures, and unlock the full potential of state-of-the-art x-ray free electron laser (XFEL) facilities to study planetary interior conditions, to understand inertial confinement fusion applications, and for material science and discovery. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2403.02776v3-abstract-full').style.display = 'none'; document.getElementById('2403.02776v3-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 16 May, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 5 March, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> March 2024. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1806.10893">arXiv:1806.10893</a> <span> [<a href="https://arxiv.org/pdf/1806.10893">pdf</a>, <a href="https://arxiv.org/format/1806.10893">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Other Condensed Matter">cond-mat.other</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Materials Science">cond-mat.mtrl-sci</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Plasma Physics">physics.plasm-ph</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1063/1.5141360">10.1063/1.5141360 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Thermomechanical response of thickly tamped targets and diamond anvil cells under pulsed hard x-ray irradiation </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Meza-Galvez%2C+J">J. Meza-Galvez</a>, <a href="/search/physics?searchtype=author&query=Gomez-Perez%2C+N">N. Gomez-Perez</a>, <a href="/search/physics?searchtype=author&query=Marshall%2C+A">A. Marshall</a>, <a href="/search/physics?searchtype=author&query=Coleman%2C+A+L">A. L. Coleman</a>, <a href="/search/physics?searchtype=author&query=Appel%2C+K">K. Appel</a>, <a href="/search/physics?searchtype=author&query=Liermann%2C+H+P">H. P. Liermann</a>, <a href="/search/physics?searchtype=author&query=McMahon%2C+M+I">M. I. McMahon</a>, <a href="/search/physics?searchtype=author&query=Konopkova%2C+Z">Z. Konopkova</a>, <a href="/search/physics?searchtype=author&query=McWilliams%2C+R+S">R. S. McWilliams</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1806.10893v2-abstract-short" style="display: inline;"> In the laboratory study of extreme conditions of temperature and density, the exposure of matter to high intensity radiation sources has been of central importance. Here we interrogate the performance of multi-layered targets in experiments involving high intensity, hard x-ray irradiation, motivated by the advent of extremely high brightness hard x-ray sources, such as free electron lasers and 4th… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1806.10893v2-abstract-full').style.display = 'inline'; document.getElementById('1806.10893v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1806.10893v2-abstract-full" style="display: none;"> In the laboratory study of extreme conditions of temperature and density, the exposure of matter to high intensity radiation sources has been of central importance. Here we interrogate the performance of multi-layered targets in experiments involving high intensity, hard x-ray irradiation, motivated by the advent of extremely high brightness hard x-ray sources, such as free electron lasers and 4th-generation synchrotron facilities. Intense hard x-ray beams can deliver significant energy in targets having thick x-ray transparent layers (tampers) around samples of interest, for the study of novel states of matter and materials' dynamics. Heated-state lifetimes in such targets can approach the microsecond level, regardless of radiation pulse duration, enabling the exploration of conditions of local thermal and thermodynamic equilibrium at extreme temperature in solid density matter. The thermal and mechanical response of such thick layered targets following x-ray heating, including hydrodynamic relaxation and heat flow on picosecond to millisecond timescales, is modelled using radiation hydrocode simulation, finite element analysis, and thermodynamic calculations. Assessing the potential for target survival over one or more exposures, and resistance to damage arising from heating and resulting mechanical stresses, this study doubles as an investigation into the performance of diamond-anvil high pressure cells under high x-ray fluences. Long used in conjunction with synchrotron x-ray radiation and high power optical lasers, the strong confinement afforded by such cells suggests novel applications at emerging high intensity x-ray facilities and new routes to studying thermodynamic equilibrium states of warm, very dense matter. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1806.10893v2-abstract-full').style.display = 'none'; document.getElementById('1806.10893v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 4 December, 2019; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 28 June, 2018; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> June 2018. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1504.00750">arXiv:1504.00750</a> <span> [<a href="https://arxiv.org/pdf/1504.00750">pdf</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Materials Science">cond-mat.mtrl-sci</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Other Condensed Matter">cond-mat.other</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Geophysics">physics.geo-ph</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1063/1.4927213">10.1063/1.4927213 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Pressure, stress, and strain distribution in the double-stage diamond anvil cell </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Lobanov%2C+S+S">Sergey S. Lobanov</a>, <a href="/search/physics?searchtype=author&query=Prakapenka%2C+V+B">Vitali B. Prakapenka</a>, <a href="/search/physics?searchtype=author&query=Prescher%2C+C">Clemens Prescher</a>, <a href="/search/physics?searchtype=author&query=Kon%C3%B4pkova%2C+Z">Zuzana Kon么pkova</a>, <a href="/search/physics?searchtype=author&query=Liermann%2C+H">Hanns-Peter Liermann</a>, <a href="/search/physics?searchtype=author&query=Crispin%2C+K">Katherine Crispin</a>, <a href="/search/physics?searchtype=author&query=Zhang%2C+C">Chi Zhang</a>, <a href="/search/physics?searchtype=author&query=Goncharov%2C+A+F">Alexander F. Goncharov</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1504.00750v1-abstract-short" style="display: inline;"> Double stage diamond anvil cells (DAC) of two designs have been assembled and tested. We used a standard symmetric DAC as a primary stage and CVD microanvils machined by a focused ion beam - as a second. We evaluated pressure, stress, and strain distributions in Au and Fe-Au samples as well as in secondary anvils using synchrotron x-ray diffraction with a micro-focused beam. A maximum pressure of… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1504.00750v1-abstract-full').style.display = 'inline'; document.getElementById('1504.00750v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1504.00750v1-abstract-full" style="display: none;"> Double stage diamond anvil cells (DAC) of two designs have been assembled and tested. We used a standard symmetric DAC as a primary stage and CVD microanvils machined by a focused ion beam - as a second. We evaluated pressure, stress, and strain distributions in Au and Fe-Au samples as well as in secondary anvils using synchrotron x-ray diffraction with a micro-focused beam. A maximum pressure of 240 GPa was reached independent of the first stage anvil culet size. We found that the stress field generated by the second stage anvils is typical of conventional DAC experiments. The maximum pressures reached are limited by strains developing in the secondary anvil and by cupping of the first stage diamond anvil in the presented experimental designs. Also, our experiments show that pressures of several megabars may be reached without sacrificing the first stage diamond anvils. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1504.00750v1-abstract-full').style.display = 'none'; document.getElementById('1504.00750v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 3 April, 2015; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> April 2015. </p> </li> </ol> <div class="is-hidden-tablet">  <span class="help" style="display: inline-block;"><a href="https://github.com/arXiv/arxiv-search/releases">Search v0.5.6 released 2020-02-24</a>  </span> </div> </div> </main> <footer> <div class="columns is-desktop" role="navigation" aria-label="Secondary">  <div class="column"> <div class="columns"> <div class="column"> <ul class="nav-spaced"> <li><a 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