论文标题
Lennard-Jones系统的声速附近的液体固相过渡
Sound velocities of Lennard-Jones systems near the liquid-solid phase transition
论文作者
论文摘要
Lennard-Jones系统的纵向和横向声音速度是在使用添加性原理的液体固体共存计算的。结果表明，结果与``精确''值从其与过量的能量和压力的关系中得出的``精确''值一致。在Lindemann的熔化规则和Stokes-Einstein的关系之间，讨论了一些后果，尤其是在自扩散和粘度系数之间的关系。提供了有关在熔融条件下实心氩气声速的可用实验数据的比较。
Longitudinal and transverse sound velocities of Lennard-Jones systems are calculated at the liquid-solid coexistence using the additivity principle. The results are shown to agree well with the ``exact'' values obtained from their relations to excess energy and pressure. Some consequences, in particular, in the context of the Lindemann's melting rule and Stokes-Einstein relation between the self-diffusion and viscosity coefficients are discussed. Comparison with available experimental data on the sound velocities of solid argon at melting conditions is provided.
