直接蒙特卡罗法模拟高温金属原子蒸发

Direct Monte Carlo simulation of metal evaporation in vaccum chambers

蒸发产生的原子束在很多科技领域获得广泛应用。特别是在原子法激光分离同位素工程中，铀原子蒸气的空间分布（如密度分布、温度分布、速度分布等）是分离器优化设计的重要依据之一。采用直接蒙特卡罗方法模拟了真空室内高温金属的蒸发动力学过程，得到了二维空间内原子蒸气流各物理量的空间分布规律，并给出了相应的物理解释。其中原子蒸气的横向平均速度分布的模拟结果与实验结果吻合很好。

The progress in the field of atomic vapor laser isotopic separation (AVLIS) has ttracted much attention in recent dacades. The reasearch work on such physical parameters ehaving atomic vapor in separation region as the 2-D of velocity, density and temperature rovides some important scientific data for designing separator in AVLIS engineering. The -D metal evaporation with high temperature was simulated by direct Monte Carlo method in his paper. The distribution of density, velocity and temperature were presented, and some elated interpretations for them were also given. Among them the average velocity istribution in transverse is in good agreement with the experimental results.