Angular distribution of photodesorbed gas from random sphere packings

<p>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,&nbsp;<br> is expected to enable higher-fidelity models of surface-bounded exospheres in the solar system (e.g., Moon, Mercury, and other &quot;airless&quot; 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.&nbsp;</p>