Langevin representation of Coulomb collisions in PIC simulations
Journal Article
·
· Journal of Computational Physics
- Naval Research Lab., Washington, DC (United States)
In order to treat electron-electron and electron-ion collisions, an efficient mesh generated Langevin formulation is developed for a particle-in-cell plasma simulation code. The Langevin equation is used to formulate these collisions in a probabilistic way analogous to the Monte Carlo method that is used for non-coulomb scattering. The only difference is that the coulomb collisions are very frequent and weak so that the Langevin equation represents the net probabilistic effect of many small angle scatterings.
- OSTI ID:
- 613741
- Journal Information:
- Journal of Computational Physics, Journal Name: Journal of Computational Physics Journal Issue: 2 Vol. 138; ISSN JCTPAH; ISSN 0021-9991
- Country of Publication:
- United States
- Language:
- English
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