A Multi-Term Boltzmann Equation Toolset for Low Temperature Plasmas

Benchmark calculations for anisotropic scattering in kinetic models for low temperature plasma

“…Notes are given on any approximations employed or numerical parameters. MultiBolt (MB), at the time of this writing v3.1.2, is an open source multi-term Boltzmann equation solver [18,28]. Earlier implementations of MB [18] restricted the BE to ISO scattering for all collisions.…”

“…Here, we report an updated form of the collision operator previously given in [18,28], which accounts for anisotropic scattering using the language of this work. We note that these expressions were originally given with ε representing the postcollision energy, which in this work is instead ε ′ .…”

“…To achieve this, we use the popular Reid ramp (RR) [24] and Lucas-Saelee (LS) [27] model atoms with three popular electron scattering models: isotropic scattering (ISO), forward scattering (FWD), or screened Coulomb (SC) scattering. Three independently developed electron kinetic models (MultiBolt [18,28], CAPS [29,30], and ELIOS [31,32]), are used to calculate benchmark data for these new benchmark cases.…”

Generation and optimization of cross-sections for electron-C4F7N collisions

“…the 'two-term approximation' models BOLSIG+ [55] and LoKI-B [56]). This study employs the publicly available multi-term BE (MTBE) code MultiBolt [57][58][59]. MultiBolt (currently version v3.1.0) has recently seen development that allows modeling the effects of gas temperature, superelastic collisions, and anisotropic electron scattering.…”