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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/2304.11011">arXiv:2304.11011</a> <span> [<a href="https://arxiv.org/pdf/2304.11011">pdf</a>, <a href="https://arxiv.org/format/2304.11011">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"> Visualizing Plasmons and Ultrafast Kinetic Instabilities in Laser-Driven Solids using X-ray Scattering </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Ordyna%2C+P">Pawe艂 Ordyna</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=Brambrink%2C+E">Erik Brambrink</a>, <a href="/search/physics?searchtype=author&query=Bussmann%2C+M">Michael Bussmann</a>, <a href="/search/physics?searchtype=author&query=Garcia%2C+A+L">Alejandro Laso Garcia</a>, <a href="/search/physics?searchtype=author&query=Garten%2C+M">Marco Garten</a>, <a href="/search/physics?searchtype=author&query=Gaus%2C+L">Lennart Gaus</a>, <a href="/search/physics?searchtype=author&query=Grenzer%2C+J">J枚rg Grenzer</a>, <a href="/search/physics?searchtype=author&query=Gutt%2C+C">Christian Gutt</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=Huang%2C+L">Lingen Huang</a>, <a href="/search/physics?searchtype=author&query=Humphries%2C+O">Oliver Humphries</a>, <a href="/search/physics?searchtype=author&query=Marr%C3%A9%2C+B+E">Brian Edward Marr茅</a>, <a href="/search/physics?searchtype=author&query=Metzkes-Ng%2C+J">Josefine Metzkes-Ng</a>, <a href="/search/physics?searchtype=author&query=Nakatsutsumi%2C+M">Motoaki Nakatsutsumi</a>, <a href="/search/physics?searchtype=author&query=%C3%96zt%C3%BCrk%2C+%C3%96">脰zg眉l 脰zt眉rk</a>, <a href="/search/physics?searchtype=author&query=Pan%2C+X">Xiayun Pan</a>, <a href="/search/physics?searchtype=author&query=Paschke-Br%C3%BChl%2C+F">Franziska Paschke-Br眉hl</a>, <a href="/search/physics?searchtype=author&query=Pelka%2C+A">Alexander Pelka</a>, <a href="/search/physics?searchtype=author&query=Prencipe%2C+I">Irene Prencipe</a>, <a href="/search/physics?searchtype=author&query=Randolph%2C+L">Lisa Randolph</a>, <a href="/search/physics?searchtype=author&query=Schlenvoigt%2C+H">Hans-Peter Schlenvoigt</a>, <a href="/search/physics?searchtype=author&query=%C5%A0m%C3%ADd%2C+M">Michal 艩m铆d</a>, <a href="/search/physics?searchtype=author&query=Stefanikova%2C+R">Radka Stefanikova</a>, <a href="/search/physics?searchtype=author&query=Thiessenhusen%2C+E">Erik Thiessenhusen</a> , et al. (5 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="2304.11011v4-abstract-short" style="display: inline;"> Ultra-intense lasers that ionize and accelerate electrons in solids to near the speed of light can lead to kinetic instabilities that alter the laser absorption and subsequent electron transport, isochoric heating, and ion acceleration. These instabilities can be difficult to characterize, but a novel approach using X-ray scattering at keV energies allows for their visualization with femtosecond t… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2304.11011v4-abstract-full').style.display = 'inline'; document.getElementById('2304.11011v4-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2304.11011v4-abstract-full" style="display: none;"> Ultra-intense lasers that ionize and accelerate electrons in solids to near the speed of light can lead to kinetic instabilities that alter the laser absorption and subsequent electron transport, isochoric heating, and ion acceleration. These instabilities can be difficult to characterize, but a novel approach using X-ray scattering at keV energies allows for their visualization with femtosecond temporal resolution on the few nanometer mesoscale. Our experiments on laser-driven flat silicon membranes show the development of structure with a dominant scale of $~60\unit{nm}$ in the plane of the laser axis and laser polarization, and $~95\unit{nm}$ in the vertical direction with a growth rate faster than $0.1/\mathrm{fs}$. Combining the XFEL experiments with simulations provides a complete picture of the structural evolution of ultra-fast laser-induced instability development, indicating the excitation of surface plasmons and the growth of a new type of filamentation instability. These findings provide new insight into the ultra-fast instability processes in solids under extreme conditions at the nanometer level with important implications for inertial confinement fusion and laboratory astrophysics. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2304.11011v4-abstract-full').style.display = 'none'; document.getElementById('2304.11011v4-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> 22 January, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 21 April, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> April 2023. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1809.07843">arXiv:1809.07843</a> <span> [<a href="https://arxiv.org/pdf/1809.07843">pdf</a>, <a href="https://arxiv.org/format/1809.07843">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 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/10.1063/1.5060732">10.1063/1.5060732 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Characterising equation of state and optical properties of dynamically pre-compressed materials </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Guarguaglini%2C+M">M. Guarguaglini</a>, <a href="/search/physics?searchtype=author&query=Hernandez%2C+J+-">J. -A. Hernandez</a>, <a href="/search/physics?searchtype=author&query=Benuzzi-Mounaix%2C+A">A. Benuzzi-Mounaix</a>, <a href="/search/physics?searchtype=author&query=Bolis%2C+R">R. Bolis</a>, <a href="/search/physics?searchtype=author&query=Brambrink%2C+E">E. Brambrink</a>, <a href="/search/physics?searchtype=author&query=Vinci%2C+T">T. Vinci</a>, <a href="/search/physics?searchtype=author&query=Ravasio%2C+A">A. Ravasio</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="1809.07843v1-abstract-short" style="display: inline;"> Characterising materials at pressures of several megabar and temperatures of a few thousand Kelvin is critical for the understanding of the Warm Dense Matter regime and to improve planetary models as these conditions are typical of planets' interiors. Today, laser-driven shock compression is the only technique to achieve multimegabar pressures, but the associated temperatures are too high to be re… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1809.07843v1-abstract-full').style.display = 'inline'; document.getElementById('1809.07843v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1809.07843v1-abstract-full" style="display: none;"> Characterising materials at pressures of several megabar and temperatures of a few thousand Kelvin is critical for the understanding of the Warm Dense Matter regime and to improve planetary models as these conditions are typical of planets' interiors. Today, laser-driven shock compression is the only technique to achieve multimegabar pressures, but the associated temperatures are too high to be representative of planetary states. Double-shock compression represents an alternative to explore lower temperatures. Here we present a method to create well-controlled double-shocked states and measure their thermodynamic state and optical reflectivity using standard optical diagnostics (Doppler velocimetry and optical pyrometry) in a laser-driven shock experiment. This method, which does not require the support of hydrodynamical simulations, is based on the application of generalised Rankine-Hugoniot relations together with a self impedance mismatch technique. A validation experiment has been performed at the LULI2000 facility (脡cole Polytechnique, France) on a sample of $伪$-quartz. A temperature $60 \%$ lower than along the principal Hugoniot has been obtained at 7.5 Mbar. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1809.07843v1-abstract-full').style.display = 'none'; document.getElementById('1809.07843v1-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> 20 September, 2018; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> September 2018. </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">10 pages, 7 figures</span> </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" 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