2014/11/27 by J. Clerouin, Jean Clérouin, P. Arnault +8 · 35 citations
Earth and Planetary Sciences · Engineering · Physics and Astronomy · #Atomic and Molecular Physics #Atomic physics #Condensed matter physics #Electron #High-pressure geophysics and materials #Ion #Laser-induced spectroscopy and plasma #Metastability #Nuclear physics #Optics #Physics #Plasma #Quantum mechanics #Scattering #Shock (circulatory) #State of matter #Thomson scattering #Warm dense matter #physics.plasm-ph
paper · pdf · doi:10.1103/physreve.91.011101
published in Physical Review E 91(1), 011101 (American Physical Society) · 12 pages, 3 figures
arxiv created 2014/11/27 · openalex publication_date 2015/01/20 · arxiv updated 2020/11/19 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
A recent and unexpected discrepancy between ab initio simulations and the interpretation of a laser shock experiment on aluminum, probed by x-ray Thomson scattering (XRTS), is addressed. The ion-ion structure factor deduced from the XRTS elastic peak (ion feature) is only compatible with a strongly coupled out-of-equilibrium state. Orbital free molecular dynamics simulations with ions colder than the electrons are employed to interpret the experiment. The relevance of decoupled temperatures for ions and electrons is discussed. The possibility that it mimics a transient, or metastable, out-of-equilibrium state after melting is also suggested.