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arxiv: 2109.10381 · v2 · pith:4RM2FMLMnew · submitted 2021-09-21 · ⚛️ physics.plasm-ph

Improved multispecies Dougherty collisions

Manaure Francisquez , James Juno , Ammar Hakim , Gregory W. Hammett , Darin R. Ernst This is my paper
classification ⚛️ physics.plasm-ph
keywords collisionsdoughertymultispeciesanalogousarbitrarybhatnagar-gross-krookconservationcross-species
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The Dougherty model Fokker-Planck operator is extended to describe nonlinear full-f collisions between multiple species in plasmas. Simple relations for cross-species interactions are developed which obey conservation laws, and reproduce familiar velocity and temperature relaxation rates. This treatment of multispecies Dougherty collisions, valid for arbitrary mass ratios, satisfies the H-Theorem unlike analogous Bhatnagar-Gross-Krook operators.

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