Equation of state for warm dense lithium: A first principles investigation

• 来源期刊: 中国物理B（英文版）
• 关键词: equation of state x-ray absorption near-edge spectroscopy density functional theory quantum molecular dynamics
• 年，卷（期）: 2017,（6）
• 页码范围: 213-217
• 页数: 5页
• 语种: 英文
• DOI: 10.1088/1674-1056/26/6/065101

摘要

The quantum molecular dynamics based on the density functional theory has been adopted to simulate the equation of state for the shock compressed lithium.In contrary to some earlier experimental measurement and theoretical simulation,there is not any evidence of the 'kink' in the Hugoniot curve in our accurate simulation.Throughout the shock compression process,only a simple solid-to-liquid melting behavior is demonstrated,instead of complicated solid-solid phase transitions.Moreover,the x-ray absorption near-edge spectroscopy has been predicted as a feasible way to diagnose the structural evolution of warm dense lithium in this density region.