Monte Carlo Collision method for Particle-In-Cell plasma simulation: PyTorch implementation

Abstract

The glow discharge in silane-hydrogene plasma is simulated by the Particle-In-Cell method. For the sake of simplicity just two collisional processes are considered. The implementation of null collision technique with PyTorch library is presented. PyTorch provides portability, flexibility and high precision of computations. The mathematical basics of the technique are given, and the Python code is listed. The diagnostics that help to understand the physical process under study as well as the correctness of the simulation are also given: energy distribution function, the number of electron collision events and the number of model particles.