Effects of gas temperature on Monte-Carlo simulations of charged particles drift in gaseous medium

TL;DR

This paper derives kinetic formulas for charged particle interactions in gases considering thermal motion, validating them through simulations in Argon and Carbon tetrafluoride, enhancing Monte-Carlo drift modeling at thermal energies.

Contribution

It introduces new kinetic formulas that incorporate thermal motion effects into Monte-Carlo simulations of charged particles in gases, verified against non-thermal models.

Findings

Formulas accurately reproduce non-thermal results when gas velocity is zero.

Simulations demonstrate significant effects of gas temperature on particle drift.

Applicable to Monte-Carlo simulations at energies comparable to thermal kinetic energy.

Abstract

We present the derivation of kinetic formulas modeling the microscopic interaction of a charged particle withing a molecular gas under effect of thermal motion. Both elastic and inelastic processes are taken in account. The results were verified to reproduce the non-thermal formulas when the target molecule velocity is set to zero. A set of simulation is provided to highlight the effects in Argon and Carbon tetrafluoride. Our results can applied in Monte-Carlo simulation of particle drift at energies of the same order of the thermal kinetic energy of the buffer gas.