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Gyrokinetic Fokker-Planck collision operator

The gyrokinetic linearized exact Fokker-Planck collision operator is obtained in a form suitable for plasma gyrokinetic equations, for arbitrary mass ratio. The linearized Fokker-Planck operator includes both the test-particle and field-particle contributions, and automatically conserves particles,...

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Published in:	Physical review letters 2011-05, Vol.106 (19), p.195002-195002
Main Authors:	Li, B, Ernst, D R
Format:	Article
Language:	English
Subjects:	70 PLASMA PHYSICS AND FUSION TECHNOLOGY CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS COLLISIONS DIFFERENTIAL EQUATIONS ELEMENTARY PARTICLES ENTROPY EQUATIONS FOKKER-PLANCK EQUATION MASS PARTIAL DIFFERENTIAL EQUATIONS PHYSICAL PROPERTIES PLASMA SIMULATION TEST PARTICLES THERMODYNAMIC PROPERTIES TWO-DIMENSIONAL CALCULATIONS
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container_issue	19
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container_title	Physical review letters
container_volume	106
creator	Li, B Ernst, D R
description	The gyrokinetic linearized exact Fokker-Planck collision operator is obtained in a form suitable for plasma gyrokinetic equations, for arbitrary mass ratio. The linearized Fokker-Planck operator includes both the test-particle and field-particle contributions, and automatically conserves particles, momentum, and energy, while ensuring non-negative entropy production. Finite gyroradius effects in both field-particle and test-particle terms are evaluated. When implemented in gyrokinetic simulations, these effects can be precomputed. The field-particle operator at each time step requires the evaluation of a single two-dimensional integral, and is not only more accurate, but appears to be less expensive to evaluate than conserving model operators.
doi_str_mv	10.1103/PhysRevLett.106.195002
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source	American Physical Society:Jisc Collections:APS Read and Publish 2023-2025 (reading list)
subjects	70 PLASMA PHYSICS AND FUSION TECHNOLOGY CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS COLLISIONS DIFFERENTIAL EQUATIONS ELEMENTARY PARTICLES ENTROPY EQUATIONS FOKKER-PLANCK EQUATION MASS PARTIAL DIFFERENTIAL EQUATIONS PHYSICAL PROPERTIES PLASMA SIMULATION TEST PARTICLES THERMODYNAMIC PROPERTIES TWO-DIMENSIONAL CALCULATIONS
title	Gyrokinetic Fokker-Planck collision operator
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