Angular distribution of photodesorbed gas from random sphere packings

This folder contains output obtained by simulating trajectories of photodesorbed trace particles in computer-generated random sphere packings.<br> This initial direction of photodesorbed gas, described here as a function of solar incidence angle of a surface element of regolith, <br> is expected to enable higher-fidelity models of surface-bounded exospheres in the solar system (e.g., Moon, Mercury, and other "airless" bodies covered by regolith), where, because of the lack of collisions in vacuum, it is important to accurately prescribe the exit angle distribution of gas from regolith.本文件夹包含通过计算机生成的随机球体堆积模型中光致解吸痕量粒子的轨迹模拟所得的输出结果。 光致解吸气体的初始出射方向被本文定义为风化层（regolith）表面微元的太阳入射角度函数， 该成果有望助力构建太阳系内表面束缚型外逸层的高保真模型，例如月球、水星及其他被风化层覆盖的无大气天体。其中，由于这些天体处于真空环境且缺乏碰撞过程，精准给定气体从风化层逸出的角度分布至关重要。