Simulating more custom particle wall interactions

Ideas & suggestions
1

I’m trying to simulate the deposition from a titanium vacuum arc source, which generates particles with a 76eV average energy. To do particle wall interactions correctly I would need to have the particle and energy reflection coefficients as a function of particle energy and angle of incidence. Also a custom reflection angular distribution. Is it possible to easily add this to molflow as an input file? Right now I’m trying to do some averaging over particle energies and angles, but it is probably simplifying things too much to capture the physics. Maybe there is a better ray tracing program that allows for custom physics.

Best,
Alan

2

Hello Alan,

Synrad’s main difference from Molflow is this feature, that it takes into account particle energy and angle (and surface roughness) for reflection direction and probability:

You couldn’t really use it for your problem though, as photons need to be generated in the volume through magnetic regions.

(If you officially want to request us to add this feature for your needs (as a paid development option), we can put you in touch with CERN’s knowledge transfer team, but it will take some time until they get back with a quote.)