期刊
PHYSICAL REVIEW E
卷 91, 期 1, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevE.91.011101
关键词
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资金
- Advanced Simulation and Computing Program (ASC)
- science campaigns 1 and 4
- LANS, LLC for the NNSA of the U.S. DOE [DE-AC52-06NA25396]
- CEA/DAM [P184]
- NNSA/DP [P184]
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.
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