Weighted Particles in Coulomb Collision Simulations Based on the Theory of a Cumulative Scattering Angle
1998; Elsevier BV; Volume: 145; Issue: 2 Linguagem: Inglês
10.1006/jcph.1998.6049
ISSN1090-2716
Autores Tópico(s)Dust and Plasma Wave Phenomena
ResumoA cumulative property of Coulomb collisions in plasmas was formulated by Nanbu. A succession of small-angle binary collisions is grouped into a unique binary collision with a large scattering angle; the law of scattering is given by the exponential cosine function. Proposed here is a Coulomb collision algorithm for weighted particles, based on that work. Three cases of the weight algorithm are considered: (1) the weights of particles are the same; (2) the weights of particles are different from species to species; and (3) the weights are different from particle to particle. Sample calculations demonstrate the accuracy of the weight algorithm.
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