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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/2007.00744">arXiv:2007.00744</a> <span> [<a href="https://arxiv.org/pdf/2007.00744">pdf</a>, <a href="https://arxiv.org/format/2007.00744">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/10.1016/j.hedp.2020.100905">10.1016/j.hedp.2020.100905 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Review of the First Charged-Particle Transport Coefficient Comparison Workshop </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Grabowski%2C+P+E">P. E. Grabowski</a>, <a href="/search/physics?searchtype=author&query=Hansen%2C+S+B">S. B. Hansen</a>, <a href="/search/physics?searchtype=author&query=Murillo%2C+M+S">M. S. Murillo</a>, <a href="/search/physics?searchtype=author&query=Stanton%2C+L+G">L. G. Stanton</a>, <a href="/search/physics?searchtype=author&query=Graziani%2C+F+R">F. R. Graziani</a>, <a href="/search/physics?searchtype=author&query=Zylstra%2C+A+B">A. B. Zylstra</a>, <a href="/search/physics?searchtype=author&query=Baalrud%2C+S+D">S. D. Baalrud</a>, <a href="/search/physics?searchtype=author&query=Arnault%2C+P">P. Arnault</a>, <a href="/search/physics?searchtype=author&query=Baczewski%2C+A+D">A. D. Baczewski</a>, <a href="/search/physics?searchtype=author&query=Benedict%2C+L+X">L. X. Benedict</a>, <a href="/search/physics?searchtype=author&query=Blancard%2C+C">C. Blancard</a>, <a href="/search/physics?searchtype=author&query=Certik%2C+O">O. Certik</a>, <a href="/search/physics?searchtype=author&query=Clerouin%2C+J">J. Clerouin</a>, <a href="/search/physics?searchtype=author&query=Collins%2C+L+A">L. A. Collins</a>, <a href="/search/physics?searchtype=author&query=Copeland%2C+S">S. Copeland</a>, <a href="/search/physics?searchtype=author&query=Correa%2C+A+A">A. A. Correa</a>, <a href="/search/physics?searchtype=author&query=Dai%2C+J">J. Dai</a>, <a href="/search/physics?searchtype=author&query=Daligault%2C+J">J. Daligault</a>, <a href="/search/physics?searchtype=author&query=Desjarlais%2C+M+P">M. P. Desjarlais</a>, <a href="/search/physics?searchtype=author&query=Dharma-wardana%2C+M+W+C">M. W. C. Dharma-wardana</a>, <a href="/search/physics?searchtype=author&query=Faussurier%2C+G">G. Faussurier</a>, <a href="/search/physics?searchtype=author&query=Haack%2C+J">J. Haack</a>, <a href="/search/physics?searchtype=author&query=Haxhimali%2C+T">T. Haxhimali</a>, <a href="/search/physics?searchtype=author&query=Hayes-Sterbenz%2C+A">A. Hayes-Sterbenz</a>, <a href="/search/physics?searchtype=author&query=Hou%2C+Y">Y. Hou</a> , et al. (20 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="2007.00744v2-abstract-short" style="display: inline;"> We present the results of the first Charged-Particle Transport Coefficient Code Comparison Workshop, which was held in Albuquerque, NM October 4-6, 2016. In this first workshop, scientists from eight institutions and four countries gathered to compare calculations of transport coefficients including thermal and electrical conduction, electron-ion coupling, inter-ion diffusion, ion viscosity, and c… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2007.00744v2-abstract-full').style.display = 'inline'; document.getElementById('2007.00744v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2007.00744v2-abstract-full" style="display: none;"> We present the results of the first Charged-Particle Transport Coefficient Code Comparison Workshop, which was held in Albuquerque, NM October 4-6, 2016. In this first workshop, scientists from eight institutions and four countries gathered to compare calculations of transport coefficients including thermal and electrical conduction, electron-ion coupling, inter-ion diffusion, ion viscosity, and charged particle stopping powers. Here, we give general background on Coulomb coupling and computational expense, review where some transport coefficients appear in hydrodynamic equations, and present the submitted data. Large variations are found when either the relevant Coulomb coupling parameter is large or computational expense causes difficulties. Understanding the general accuracy and uncertainty associated with such transport coefficients is important for quantifying errors in hydrodynamic simulations of inertial confinement fusion and high-energy density experiments. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2007.00744v2-abstract-full').style.display = 'none'; document.getElementById('2007.00744v2-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> 29 September, 2020; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 1 July, 2020; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> July 2020. </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">45 pages, 17 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/2001.06639">arXiv:2001.06639</a> <span> [<a href="https://arxiv.org/pdf/2001.06639">pdf</a>, <a href="https://arxiv.org/format/2001.06639">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="Computational Physics">physics.comp-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Data Analysis, Statistics and Probability">physics.data-an</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/10.1103/PhysRevLett.124.225002">10.1103/PhysRevLett.124.225002 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Time-resolved XUV Opacity Measurements of Warm-Dense Aluminium </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Vinko%2C+S+M">S. M. Vinko</a>, <a href="/search/physics?searchtype=author&query=Vozda%2C+V">V. Vozda</a>, <a href="/search/physics?searchtype=author&query=Andreasson%2C+J">J. Andreasson</a>, <a href="/search/physics?searchtype=author&query=Bajt%2C+S">S. Bajt</a>, <a href="/search/physics?searchtype=author&query=Bielecki%2C+J">J. Bielecki</a>, <a href="/search/physics?searchtype=author&query=Burian%2C+T">T. Burian</a>, <a href="/search/physics?searchtype=author&query=Chalupsky%2C+J">J. Chalupsky</a>, <a href="/search/physics?searchtype=author&query=Ciricosta%2C+O">O. Ciricosta</a>, <a href="/search/physics?searchtype=author&query=Desjarlais%2C+M+P">M. P. Desjarlais</a>, <a href="/search/physics?searchtype=author&query=Fleckenstein%2C+H">H. Fleckenstein</a>, <a href="/search/physics?searchtype=author&query=Hajdu%2C+J">J. Hajdu</a>, <a href="/search/physics?searchtype=author&query=Hajkova%2C+V">V. Hajkova</a>, <a href="/search/physics?searchtype=author&query=Hollebon%2C+P">P. Hollebon</a>, <a href="/search/physics?searchtype=author&query=Juha%2C+L">L. Juha</a>, <a href="/search/physics?searchtype=author&query=Kasim%2C+M+F">M. F. Kasim</a>, <a href="/search/physics?searchtype=author&query=McBride%2C+E+E">E. E. McBride</a>, <a href="/search/physics?searchtype=author&query=Muehlig%2C+K">K. Muehlig</a>, <a href="/search/physics?searchtype=author&query=Preston%2C+T+R">T. R. Preston</a>, <a href="/search/physics?searchtype=author&query=Rackstraw%2C+D+S">D. S. Rackstraw</a>, <a href="/search/physics?searchtype=author&query=Roling%2C+S">S. Roling</a>, <a href="/search/physics?searchtype=author&query=Toleikis%2C+S">S. Toleikis</a>, <a href="/search/physics?searchtype=author&query=Wark%2C+J+S">J. S. Wark</a>, <a href="/search/physics?searchtype=author&query=Zacharias%2C+H">H. Zacharias</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="2001.06639v1-abstract-short" style="display: inline;"> The free-free opacity in plasmas is fundamental to our understanding of energy transport in stellar interiors and for inertial confinement fusion research. However, theoretical predictions in the challenging dense plasma regime are conflicting and there is a dearth of accurate experimental data to allow for direct model validation. Here we present time-resolved transmission measurements in solid-d… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2001.06639v1-abstract-full').style.display = 'inline'; document.getElementById('2001.06639v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2001.06639v1-abstract-full" style="display: none;"> The free-free opacity in plasmas is fundamental to our understanding of energy transport in stellar interiors and for inertial confinement fusion research. However, theoretical predictions in the challenging dense plasma regime are conflicting and there is a dearth of accurate experimental data to allow for direct model validation. Here we present time-resolved transmission measurements in solid-density Al heated by an XUV free-electron laser. We use a novel functional optimization approach to extract the temperature-dependent absorption coefficient directly from an oversampled pool of single-shot measurements, and find a pronounced enhancement of the opacity as the plasma is heated to temperatures of order the Fermi energy. Plasma heating and opacity-enhancement is observed on ultrafast time scales, within the duration of the femtosecond XUV pulse. We attribute further rises in the opacity on ps timescales to melt and the formation of warm-dense matter. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2001.06639v1-abstract-full').style.display = 'none'; document.getElementById('2001.06639v1-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> 18 January, 2020; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> January 2020. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. Lett. 124, 225002 (2020) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1912.05660">arXiv:1912.05660</a> <span> [<a href="https://arxiv.org/pdf/1912.05660">pdf</a>, <a href="https://arxiv.org/format/1912.05660">other</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="Statistical Mechanics">cond-mat.stat-mech</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Chemical Physics">physics.chem-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Computational Physics">physics.comp-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/10.1126/science.aaw0969">10.1126/science.aaw0969 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Thermodynamics of the insulator-metal transition in dense liquid deuterium </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Desjarlais%2C+M+P">M. P. Desjarlais</a>, <a href="/search/physics?searchtype=author&query=Knudson%2C+M+D">M. D. Knudson</a>, <a href="/search/physics?searchtype=author&query=Redmer%2C+R">R. Redmer</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="1912.05660v1-abstract-short" style="display: inline;"> Recent dynamic compression experiments [M. D. Knudson et al., Science 348, 1455 (2015); P. M. Celliers et al., Science 361, 677 (2018)] have observed the insulator-metal transition in dense liquid deuterium, but with an approximately 95 GPa difference in the quoted pressures for the transition at comparable estimated temperatures. It was claimed in the latter of these two papers that a very large… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1912.05660v1-abstract-full').style.display = 'inline'; document.getElementById('1912.05660v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1912.05660v1-abstract-full" style="display: none;"> Recent dynamic compression experiments [M. D. Knudson et al., Science 348, 1455 (2015); P. M. Celliers et al., Science 361, 677 (2018)] have observed the insulator-metal transition in dense liquid deuterium, but with an approximately 95 GPa difference in the quoted pressures for the transition at comparable estimated temperatures. It was claimed in the latter of these two papers that a very large latent heat effect on the temperature was overlooked in the first, requiring correction of those temperatures downward by a factor of two, thereby putting both experiments on the same theoretical phase boundary and reconciling the pressure discrepancy. We have performed extensive path-integral molecular dynamics calculations with density functional theory to directly calculate the isentropic temperature drop due to latent heat in the insulator-metal transition for dense liquid deuterium and show that this large temperature drop is not consistent with the underlying thermodynamics. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1912.05660v1-abstract-full').style.display = 'none'; document.getElementById('1912.05660v1-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> 11 December, 2019; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> December 2019. </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">7 pages, 5 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. B 101, 104101 (2020) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1806.02726">arXiv:1806.02726</a> <span> [<a href="https://arxiv.org/pdf/1806.02726">pdf</a>, <a href="https://arxiv.org/format/1806.02726">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="Atomic Physics">physics.atom-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/10.1103/PhysRevE.100.043207">10.1103/PhysRevE.100.043207 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Ab-initio simulations and measurements of the free-free opacity in Aluminum </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Hollebon%2C+P">P. Hollebon</a>, <a href="/search/physics?searchtype=author&query=Ciricosta%2C+O">O. Ciricosta</a>, <a href="/search/physics?searchtype=author&query=Desjarlais%2C+M+P">M. P. Desjarlais</a>, <a href="/search/physics?searchtype=author&query=Cacho%2C+C">C. Cacho</a>, <a href="/search/physics?searchtype=author&query=Spindloe%2C+C">C. Spindloe</a>, <a href="/search/physics?searchtype=author&query=Springate%2C+E">E. Springate</a>, <a href="/search/physics?searchtype=author&query=Turcu%2C+I+C+E">I. C. E. Turcu</a>, <a href="/search/physics?searchtype=author&query=Wark%2C+J+S">J. S. Wark</a>, <a href="/search/physics?searchtype=author&query=Vinko%2C+S+M">S. M. Vinko</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="1806.02726v1-abstract-short" style="display: inline;"> The free-free opacity in dense systems is a property that both tests our fundamental understanding of correlated many-body systems, and is needed to understand the radiative properties of high energy-density plasmas. Despite its importance, predictive calculations of the free-free opacity remain challenging even in the condensed matter phase for simple metals. Here we show how the free-free opacit… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1806.02726v1-abstract-full').style.display = 'inline'; document.getElementById('1806.02726v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1806.02726v1-abstract-full" style="display: none;"> The free-free opacity in dense systems is a property that both tests our fundamental understanding of correlated many-body systems, and is needed to understand the radiative properties of high energy-density plasmas. Despite its importance, predictive calculations of the free-free opacity remain challenging even in the condensed matter phase for simple metals. Here we show how the free-free opacity can be modelled at finite-temperatures via time-dependent density functional theory, and illustrate the importance of including local field corrections, core polarization and self-energy corrections. Our calculations for ground-state Al are shown to agree well with experimental opacity measurements performed on the Artemis laser facility across a wide range of x-ray to ultraviolet wavelengths. We extend our calculations across the melt to the warm-dense matter regime, and find good agreement with advanced plasma models based on inverse bremsstrahlung at temperatures above 10 eV. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1806.02726v1-abstract-full').style.display = 'none'; document.getElementById('1806.02726v1-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> 7 June, 2018; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> June 2018. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. E 100, 043207 (2019) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1612.05574">arXiv:1612.05574</a> <span> [<a href="https://arxiv.org/pdf/1612.05574">pdf</a>, <a href="https://arxiv.org/ps/1612.05574">ps</a>, <a href="https://arxiv.org/format/1612.05574">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/10.1103/PhysRevE.95.033203">10.1103/PhysRevE.95.033203 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Density-functional calculations of transport properties in the non-degenerate limit and the role of electron-electron scattering </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Desjarlais%2C+M+P">Michael P. Desjarlais</a>, <a href="/search/physics?searchtype=author&query=Scullard%2C+C+R">Christian R. Scullard</a>, <a href="/search/physics?searchtype=author&query=Benedict%2C+L+X">Lorin X. Benedict</a>, <a href="/search/physics?searchtype=author&query=Whitley%2C+H+D">Heather D. Whitley</a>, <a href="/search/physics?searchtype=author&query=Redmer%2C+R">Ronald Redmer</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="1612.05574v1-abstract-short" style="display: inline;"> We compute electrical and thermal conductivities of hydrogen plasmas in the non-degenerate regime using Kohn-Sham Density Functional Theory (DFT) and an application of the Kubo-Greenwood response formula, and demonstrate that for thermal conductivity, the mean-field treatment of the electron-electron (e-e) interaction therein is insufficient to reproduce the weak-coupling limit obtained by plasma… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1612.05574v1-abstract-full').style.display = 'inline'; document.getElementById('1612.05574v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1612.05574v1-abstract-full" style="display: none;"> We compute electrical and thermal conductivities of hydrogen plasmas in the non-degenerate regime using Kohn-Sham Density Functional Theory (DFT) and an application of the Kubo-Greenwood response formula, and demonstrate that for thermal conductivity, the mean-field treatment of the electron-electron (e-e) interaction therein is insufficient to reproduce the weak-coupling limit obtained by plasma kinetic theories. An explicit e-e scattering correction to the DFT is posited by appealing to Matthiessen's Rule and the results of our computations of conductivities with the quantum Lenard-Balescu (QLB) equation. Further motivation of our correction is provided by an argument arising from the Zubarev quantum kinetic theory approach. Significant emphasis is placed on our efforts to produce properly converged results for plasma transport using Kohn-Sham DFT, so that an accurate assessment of the importance and efficacy of our e-e scattering corrections to the thermal conductivity can be made. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1612.05574v1-abstract-full').style.display = 'none'; document.getElementById('1612.05574v1-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 December, 2016; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> December 2016. </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">11 pages, 4 figures, 4 tables</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> SAND2016-12720J </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1512.05795">arXiv:1512.05795</a> <span> [<a href="https://arxiv.org/pdf/1512.05795">pdf</a>, <a href="https://arxiv.org/format/1512.05795">other</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="Chemical Physics">physics.chem-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Computational Physics">physics.comp-ph</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/10.1103/PhysRevLett.116.115004">10.1103/PhysRevLett.116.115004 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> X-Ray Thomson scattering without the Chihara decomposition </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Baczewski%2C+A+D">Andrew D. Baczewski</a>, <a href="/search/physics?searchtype=author&query=Shulenburger%2C+L">Luke Shulenburger</a>, <a href="/search/physics?searchtype=author&query=Desjarlais%2C+M+P">Michael P. Desjarlais</a>, <a href="/search/physics?searchtype=author&query=Hansen%2C+S+B">Stephanie B. Hansen</a>, <a href="/search/physics?searchtype=author&query=Magyar%2C+R+J">Rudolph J. Magyar</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="1512.05795v2-abstract-short" style="display: inline;"> X-Ray Thomson Scattering (XRTS) is an important experimental technique used to measure the temperature, ionization state, structure, and density of warm dense matter (WDM). The fundamental property probed in these experiments is the electronic dynamic structure factor (DSF). In most models, this is decomposed into three terms [Chihara, J. Phys. F: Metal Phys. {\bf 17}, 295 (1987)] representing the… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1512.05795v2-abstract-full').style.display = 'inline'; document.getElementById('1512.05795v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1512.05795v2-abstract-full" style="display: none;"> X-Ray Thomson Scattering (XRTS) is an important experimental technique used to measure the temperature, ionization state, structure, and density of warm dense matter (WDM). The fundamental property probed in these experiments is the electronic dynamic structure factor (DSF). In most models, this is decomposed into three terms [Chihara, J. Phys. F: Metal Phys. {\bf 17}, 295 (1987)] representing the response of tightly bound, loosely bound, and free electrons. Accompanying this decomposition is the classification of electrons as either bound or free, which is useful for gapped and cold systems but becomes increasingly questionable as temperatures and pressures increase into the WDM regime. In this work we provide unambiguous first principles calculations of the dynamic structure factor of warm dense beryllium, independent of the Chihara form, by treating bound and free states under a single formalism. The computational approach is real-time finite-temperature time-dependent density functional theory (TDDFT) being applied here for the first time to WDM. We compare results from TDDFT to Chihara-based calculations for experimentally relevant conditions in shock-compressed beryllium. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1512.05795v2-abstract-full').style.display = 'none'; document.getElementById('1512.05795v2-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> 1 April, 2016; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 17 December, 2015; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> December 2015. </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">12 pages, 8 figures, and 1 table. 6 pages main manuscript</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Physical Review Letters 116(11), 115004, 2016 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1502.00009">arXiv:1502.00009</a> <span> [<a href="https://arxiv.org/pdf/1502.00009">pdf</a>, <a href="https://arxiv.org/ps/1502.00009">ps</a>, <a href="https://arxiv.org/format/1502.00009">other</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="Earth and Planetary Astrophysics">astro-ph.EP</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/10.1103/PhysRevLett.115.198501">10.1103/PhysRevLett.115.198501 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Shock Response and Phase Transitions of MgO at Planetary Impact Conditions </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Root%2C+S">Seth Root</a>, <a href="/search/physics?searchtype=author&query=Shulenburger%2C+L">Luke Shulenburger</a>, <a href="/search/physics?searchtype=author&query=Lemke%2C+R+W">Raymond W. Lemke</a>, <a href="/search/physics?searchtype=author&query=Dolan%2C+D+H">Daniel H. Dolan</a>, <a href="/search/physics?searchtype=author&query=Mattsson%2C+T+R">Thomas R. Mattsson</a>, <a href="/search/physics?searchtype=author&query=Desjarlais%2C+M+P">Michael P. Desjarlais</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="1502.00009v1-abstract-short" style="display: inline;"> The moon-forming impact and the subsequent evolution of the proto-Earth is strongly dependent on the properties of materials at the extreme conditions generated by this violent collision. We examine the high pressure behavior of MgO, one of the dominant constituents in the earth's mantle, using high-precision, plate impact shock compression experiments performed on Sandia National Laboratories Z-M… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1502.00009v1-abstract-full').style.display = 'inline'; document.getElementById('1502.00009v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1502.00009v1-abstract-full" style="display: none;"> The moon-forming impact and the subsequent evolution of the proto-Earth is strongly dependent on the properties of materials at the extreme conditions generated by this violent collision. We examine the high pressure behavior of MgO, one of the dominant constituents in the earth's mantle, using high-precision, plate impact shock compression experiments performed on Sandia National Laboratories Z-Machine and extensive quantum simulations using Density Functional Theory (DFT) and quantum Monte Carlo (QMC). The combined data span from ambient conditions to 1.2 TPa and 42,000 K, showing solid-solid and solid-liquid phase boundaries. Furthermore our results indicate under impact that the solid and liquid phases coexist for more than 100 GPa, pushing complete melting to pressures in excess of 600 GPa. The high pressure required for complete shock melting places a lower bound on the relative velocities required for the moon forming impact. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1502.00009v1-abstract-full').style.display = 'none'; document.getElementById('1502.00009v1-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> 30 January, 2015; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> February 2015. </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">5 pages, 4 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> SAND2015-0557 O </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. Lett. 115, 198501 (2015) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1501.03850">arXiv:1501.03850</a> <span> [<a href="https://arxiv.org/pdf/1501.03850">pdf</a>, <a href="https://arxiv.org/ps/1501.03850">ps</a>, <a href="https://arxiv.org/format/1501.03850">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Chemical Physics">physics.chem-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"> Beyond chemical accuracy: The pseudopotential approximation in diffusion Monte Carlo calculations of the HCP to BCC phase transition in beryllium </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Shulenburger%2C+L">Luke Shulenburger</a>, <a href="/search/physics?searchtype=author&query=Mattsson%2C+T+R">Thomas R. Mattsson</a>, <a href="/search/physics?searchtype=author&query=Desjarlais%2C+M+P">M. P. Desjarlais</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="1501.03850v1-abstract-short" style="display: inline;"> Motivated by the disagreement between recent diffusion Monte Carlo calculations and experiments on the phase transition pressure between the ambient and beta-Sn phases of silicon, we present a study of the HCP to BCC phase transition in beryllium. This lighter element provides an oppor- tunity for directly testing many of the approximations required for calculations on silicon and may suggest a pa… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1501.03850v1-abstract-full').style.display = 'inline'; document.getElementById('1501.03850v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1501.03850v1-abstract-full" style="display: none;"> Motivated by the disagreement between recent diffusion Monte Carlo calculations and experiments on the phase transition pressure between the ambient and beta-Sn phases of silicon, we present a study of the HCP to BCC phase transition in beryllium. This lighter element provides an oppor- tunity for directly testing many of the approximations required for calculations on silicon and may suggest a path towards increasing the practical accuracy of diffusion Monte Carlo calculations of solids in general. We demonstrate that the single largest approximation in these calculations is the pseudopotential approximation. After removing this we find excellent agreement with experiment for the ambient HCP phase and results similar to careful calculations using density functional theory for the phase transition pressure. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1501.03850v1-abstract-full').style.display = 'none'; document.getElementById('1501.03850v1-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> 15 January, 2015; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> January 2015. </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">5 pages, 3 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> SAND2015-20744 J </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1201.2622">arXiv:1201.2622</a> <span> [<a href="https://arxiv.org/pdf/1201.2622">pdf</a>, <a href="https://arxiv.org/ps/1201.2622">ps</a>, <a href="https://arxiv.org/format/1201.2622">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Earth and Planetary Astrophysics">astro-ph.EP</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/10.1103/PhysRevLett.108.091102">10.1103/PhysRevLett.108.091102 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Probing the interiors of the ice giants: Shock compression of water to 700 GPa and 3.8 g/ccm </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Knudson%2C+M+D">M. D. Knudson</a>, <a href="/search/physics?searchtype=author&query=Desjarlais%2C+M+P">M. P. Desjarlais</a>, <a href="/search/physics?searchtype=author&query=Lemke%2C+R+W">R. W. Lemke</a>, <a href="/search/physics?searchtype=author&query=Mattsson%2C+T+R">T. R. Mattsson</a>, <a href="/search/physics?searchtype=author&query=French%2C+M">M. French</a>, <a href="/search/physics?searchtype=author&query=Nettelmann%2C+N">N. Nettelmann</a>, <a href="/search/physics?searchtype=author&query=Redmer%2C+R">R. Redmer</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="1201.2622v1-abstract-short" style="display: inline;"> Recently there has been tremendous increase in the number of identified extra-solar planetary systems. Our understanding of their formation is tied to exoplanet internal structure models, which rely upon equations of state of light elements and compounds like water. Here we present shock compression data for water with unprecedented accuracy that shows water equations of state commonly used in pla… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1201.2622v1-abstract-full').style.display = 'inline'; document.getElementById('1201.2622v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1201.2622v1-abstract-full" style="display: none;"> Recently there has been tremendous increase in the number of identified extra-solar planetary systems. Our understanding of their formation is tied to exoplanet internal structure models, which rely upon equations of state of light elements and compounds like water. Here we present shock compression data for water with unprecedented accuracy that shows water equations of state commonly used in planetary modeling significantly overestimate the compressibility at conditions relevant to planetary interiors. Furthermore, we show its behavior at these conditions, including reflectivity and isentropic response, is well described by a recent first-principles based equation of state. These findings advocate this water model be used as the standard for modeling Neptune, Uranus, and "hot Neptune" exoplanets, and should improve our understanding of these types of planets. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1201.2622v1-abstract-full').style.display = 'none'; document.getElementById('1201.2622v1-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> 12 January, 2012; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> January 2012. </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">Accepted to Phys. Rev. Lett.; supplementary material attached including 2 figures and 2 tables; to view attachments, please download and extract the gzipped tar source file listed under "Other formats"</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/0904.0100">arXiv:0904.0100</a> <span> [<a href="https://arxiv.org/pdf/0904.0100">pdf</a>, <a href="https://arxiv.org/ps/0904.0100">ps</a>, <a href="https://arxiv.org/format/0904.0100">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"> XUV Opacity of Aluminum between the Cold-Solid to Warm-Plasma Transition </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Vinko%2C+S+M">S. M. Vinko</a>, <a href="/search/physics?searchtype=author&query=Gregori%2C+G">G. Gregori</a>, <a href="/search/physics?searchtype=author&query=Nagler%2C+B">B. Nagler</a>, <a href="/search/physics?searchtype=author&query=Whitcher%2C+T+J">T. J. Whitcher</a>, <a href="/search/physics?searchtype=author&query=Desjarlais%2C+M+P">M. P. Desjarlais</a>, <a href="/search/physics?searchtype=author&query=Lee%2C+R+W">R. W. Lee</a>, <a href="/search/physics?searchtype=author&query=Audebert%2C+P">P. Audebert</a>, <a href="/search/physics?searchtype=author&query=Wark%2C+J+S">J. S. Wark</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="0904.0100v1-abstract-short" style="display: inline;"> We present calculations of the free-free XUV opacity of warm, solid-density aluminum at photon energies between the plasma frequency at 15 eV and the L-edge at 73 eV, using both density functional theory combined with molecular dynamics and a semi-analytical model in the RPA framework with the inclusion of local field corrections. As the temperature is increased from room temperature to 10 eV, w… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('0904.0100v1-abstract-full').style.display = 'inline'; document.getElementById('0904.0100v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="0904.0100v1-abstract-full" style="display: none;"> We present calculations of the free-free XUV opacity of warm, solid-density aluminum at photon energies between the plasma frequency at 15 eV and the L-edge at 73 eV, using both density functional theory combined with molecular dynamics and a semi-analytical model in the RPA framework with the inclusion of local field corrections. As the temperature is increased from room temperature to 10 eV, with the ion and electron temperatures equal, we calculate an increase in the opacity in the range over which the degree of ionization is constant. The effect is less pronounced if only the electron temperature is allowed to increase. The physical significance of these increases is discussed in terms of intense XUV-laser matter interactions on both femtosecond and picosecond time-scales. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('0904.0100v1-abstract-full').style.display = 'none'; document.getElementById('0904.0100v1-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> 1 April, 2009; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> April 2009. </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">4 pages, 3 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/0710.1006">arXiv:0710.1006</a> <span> [<a href="https://arxiv.org/pdf/0710.1006">pdf</a>, <a href="https://arxiv.org/ps/0710.1006">ps</a>, <a href="https://arxiv.org/format/0710.1006">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="Chemical Physics">physics.chem-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/10.1103/PhysRevB.77.184201">10.1103/PhysRevB.77.184201 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Thermophysical properties of warm dense hydrogen </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Holst%2C+B">Bastian Holst</a>, <a href="/search/physics?searchtype=author&query=Redmer%2C+R">Ronald Redmer</a>, <a href="/search/physics?searchtype=author&query=Desjarlais%2C+M+P">Michael P. Desjarlais</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="0710.1006v1-abstract-short" style="display: inline;"> We study the thermophysical properties of warm dense hydrogen using quantum molecular dynamics simulations. New results are presented for the pair distribution functions, the equation of state, the Hugoniot curve, and the reflectivity. We compare with available experimental data and predictions of the chemical picture. Especially, we discuss the nonmetal-to-metal transition which occurs at about… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('0710.1006v1-abstract-full').style.display = 'inline'; document.getElementById('0710.1006v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="0710.1006v1-abstract-full" style="display: none;"> We study the thermophysical properties of warm dense hydrogen using quantum molecular dynamics simulations. New results are presented for the pair distribution functions, the equation of state, the Hugoniot curve, and the reflectivity. We compare with available experimental data and predictions of the chemical picture. Especially, we discuss the nonmetal-to-metal transition which occurs at about 40 GPa in the dense fluid. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('0710.1006v1-abstract-full').style.display = 'none'; document.getElementById('0710.1006v1-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 October, 2007; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 2007. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. B 77, 184201 (2008) [7 pages] </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/physics/0701248">arXiv:physics/0701248</a> <span> [<a href="https://arxiv.org/pdf/physics/0701248">pdf</a>, <a href="https://arxiv.org/ps/physics/0701248">ps</a>, <a href="https://arxiv.org/format/physics/0701248">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="Computational Physics">physics.comp-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/10.1103/PhysRevLett.98.190602">10.1103/PhysRevLett.98.190602 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Quantum molecular dynamics simulations for the nonmetal-to-metal transition in fluid helium </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Kietzmann%2C+A">Andre Kietzmann</a>, <a href="/search/physics?searchtype=author&query=Holst%2C+B">Bastian Holst</a>, <a href="/search/physics?searchtype=author&query=Redmer%2C+R">Ronald Redmer</a>, <a href="/search/physics?searchtype=author&query=Desjarlais%2C+M+P">Michael P. Desjarlais</a>, <a href="/search/physics?searchtype=author&query=Mattsson%2C+T+R">Thomas R. Mattsson</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="physics/0701248v1-abstract-short" style="display: inline;"> We have performed quantum molecular dynamics simulations for dense helium to study the nonmetal-to-metal transition at high pressures. We present new results for the equation of state and the Hugoniot curve in the warm dense matter region. The optical conductivity is calculated via the Kubo-Greenwood formula from which the dc conductivity is derived. The nonmetal-to-metal transition is identifie… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('physics/0701248v1-abstract-full').style.display = 'inline'; document.getElementById('physics/0701248v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="physics/0701248v1-abstract-full" style="display: none;"> We have performed quantum molecular dynamics simulations for dense helium to study the nonmetal-to-metal transition at high pressures. We present new results for the equation of state and the Hugoniot curve in the warm dense matter region. The optical conductivity is calculated via the Kubo-Greenwood formula from which the dc conductivity is derived. The nonmetal-to-metal transition is identified at about 1 g/ccm. We compare with experimental results as well as with other theoretical approaches, especially with predictions of chemical models. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('physics/0701248v1-abstract-full').style.display = 'none'; document.getElementById('physics/0701248v1-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, 2007; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> January 2007. </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">4 pages, 5 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. Lett. 98, 190602 (2007) </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 href="https://info.arxiv.org/about">About</a></li> <li><a href="https://info.arxiv.org/help">Help</a></li> </ul> </div> <div class="column"> <ul class="nav-spaced"> <li> <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512" class="icon filter-black" role="presentation"><title>contact arXiv</title><desc>Click here to contact arXiv</desc><path d="M502.3 190.8c3.9-3.1 9.7-.2 9.7 4.7V400c0 26.5-21.5 48-48 48H48c-26.5 0-48-21.5-48-48V195.6c0-5 5.7-7.8 9.7-4.7 22.4 17.4 52.1 39.5 154.1 113.6 21.1 15.4 56.7 47.8 92.2 47.6 35.7.3 72-32.8 92.3-47.6 102-74.1 131.6-96.3 154-113.7zM256 320c23.2.4 56.6-29.2 73.4-41.4 132.7-96.3 142.8-104.7 173.4-128.7 5.8-4.5 9.2-11.5 9.2-18.9v-19c0-26.5-21.5-48-48-48H48C21.5 64 0 85.5 0 112v19c0 7.4 3.4 14.3 9.2 18.9 30.6 23.9 40.7 32.4 173.4 128.7 16.8 12.2 50.2 41.8 73.4 41.4z"/></svg> <a href="https://info.arxiv.org/help/contact.html"> Contact</a> </li> <li> <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512" class="icon filter-black" role="presentation"><title>subscribe to arXiv mailings</title><desc>Click here to subscribe</desc><path d="M476 3.2L12.5 270.6c-18.1 10.4-15.8 35.6 2.2 43.2L121 358.4l287.3-253.2c5.5-4.9 13.3 2.6 8.6 8.3L176 407v80.5c0 23.6 28.5 32.9 42.5 15.8L282 426l124.6 52.2c14.2 6 30.4-2.9 33-18.2l72-432C515 7.8 493.3-6.8 476 3.2z"/></svg> <a href="https://info.arxiv.org/help/subscribe"> Subscribe</a> </li> </ul> </div> </div> </div>   <div class="column"> <div class="columns"> <div class="column"> <ul class="nav-spaced"> <li><a href="https://info.arxiv.org/help/license/index.html">Copyright</a></li> <li><a href="https://info.arxiv.org/help/policies/privacy_policy.html">Privacy Policy</a></li> </ul> </div> <div class="column sorry-app-links"> <ul class="nav-spaced"> <li><a href="https://info.arxiv.org/help/web_accessibility.html">Web Accessibility Assistance</a></li> <li> <p class="help"> <a class="a11y-main-link" href="https://status.arxiv.org" target="_blank">arXiv Operational Status <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 256 512" class="icon filter-dark_grey" role="presentation"><path d="M224.3 273l-136 136c-9.4 9.4-24.6 9.4-33.9 0l-22.6-22.6c-9.4-9.4-9.4-24.6 0-33.9l96.4-96.4-96.4-96.4c-9.4-9.4-9.4-24.6 0-33.9L54.3 103c9.4-9.4 24.6-9.4 33.9 0l136 136c9.5 9.4 9.5 24.6.1 34z"/></svg></a><br> Get status notifications via <a class="is-link" href="https://subscribe.sorryapp.com/24846f03/email/new" target="_blank"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512" class="icon filter-black" role="presentation"><path d="M502.3 190.8c3.9-3.1 9.7-.2 9.7 4.7V400c0 26.5-21.5 48-48 48H48c-26.5 0-48-21.5-48-48V195.6c0-5 5.7-7.8 9.7-4.7 22.4 17.4 52.1 39.5 154.1 113.6 21.1 15.4 56.7 47.8 92.2 47.6 35.7.3 72-32.8 92.3-47.6 102-74.1 131.6-96.3 154-113.7zM256 320c23.2.4 56.6-29.2 73.4-41.4 132.7-96.3 142.8-104.7 173.4-128.7 5.8-4.5 9.2-11.5 9.2-18.9v-19c0-26.5-21.5-48-48-48H48C21.5 64 0 85.5 0 112v19c0 7.4 3.4 14.3 9.2 18.9 30.6 23.9 40.7 32.4 173.4 128.7 16.8 12.2 50.2 41.8 73.4 41.4z"/></svg>email</a> or <a class="is-link" href="https://subscribe.sorryapp.com/24846f03/slack/new" target="_blank"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 448 512" class="icon filter-black" role="presentation"><path d="M94.12 315.1c0 25.9-21.16 47.06-47.06 47.06S0 341 0 315.1c0-25.9 21.16-47.06 47.06-47.06h47.06v47.06zm23.72 0c0-25.9 21.16-47.06 47.06-47.06s47.06 21.16 47.06 47.06v117.84c0 25.9-21.16 47.06-47.06 47.06s-47.06-21.16-47.06-47.06V315.1zm47.06-188.98c-25.9 0-47.06-21.16-47.06-47.06S139 32 164.9 32s47.06 21.16 47.06 47.06v47.06H164.9zm0 23.72c25.9 0 47.06 21.16 47.06 47.06s-21.16 47.06-47.06 47.06H47.06C21.16 243.96 0 222.8 0 196.9s21.16-47.06 47.06-47.06H164.9zm188.98 47.06c0-25.9 21.16-47.06 47.06-47.06 25.9 0 47.06 21.16 47.06 47.06s-21.16 47.06-47.06 47.06h-47.06V196.9zm-23.72 0c0 25.9-21.16 47.06-47.06 47.06-25.9 0-47.06-21.16-47.06-47.06V79.06c0-25.9 21.16-47.06 47.06-47.06 25.9 0 47.06 21.16 47.06 47.06V196.9zM283.1 385.88c25.9 0 47.06 21.16 47.06 47.06 0 25.9-21.16 47.06-47.06 47.06-25.9 0-47.06-21.16-47.06-47.06v-47.06h47.06zm0-23.72c-25.9 0-47.06-21.16-47.06-47.06 0-25.9 21.16-47.06 47.06-47.06h117.84c25.9 0 47.06 21.16 47.06 47.06 0 25.9-21.16 47.06-47.06 47.06H283.1z"/></svg>slack</a> </p> </li> </ul> </div> </div> </div>  </div> </footer> <script src="https://static.arxiv.org/static/base/1.0.0a5/js/member_acknowledgement.js"></script> </body> </html>

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