Construction of Monte Carlo operators in collisional transport theory
- Dipartimento di Scienze Matematiche, Universita di Trieste, Trieste (Italy)
- Princeton Plasma Physics Laboratory, Princeton University, Princeton (New Jersey (United States)); Consorzio di Magnetofluidodinamica, Dipartimento di Scienze Matematiche, Universita' di Trieste, Trieste (Italy)
A Monte Carlo approach for investigating the dynamics of quiescent collisional magnetoplasmas is presented, based on the discretization of the gyrokinetic equation. The theory applies to a strongly rotating multispecies plasma, in a toroidally axisymmetric configuration. Expressions of the Monte Carlo collision operators are obtained for general [ital v]-space nonorthogonal coordinates systems, in terms of approximate solutions of the discretized gyrokinetic equation. Basic features of the Monte Carlo operators are that they fullfill all the required conservation laws, i.e., linear momentum and kinetic energy conservation, and in addition that they take into account correctly also off-diagonal diffusion coefficients. The present operators are thus potentially useful for describing the dynamics of a multispecies toroidal magnetoplasma. In particular, strict ambipolarity of particle fluxes is ensured automatically in the limit of small departures of the unperturbed particle trajectories from some initial axisymmetric toroidal magnetic surfaces.
- DOE Contract Number:
- AC02-76CH03073
- OSTI ID:
- 5201269
- Journal Information:
- Physics of Plasmas; (United States), Journal Name: Physics of Plasmas; (United States) Vol. 1:4; ISSN PHPAEN; ISSN 1070-664X
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
700330* -- Plasma Kinetics
Transport
& Impurities-- (1992-)
CALCULATION METHODS
CLOSED PLASMA DEVICES
COLLISIONAL PLASMA
CONSERVATION LAWS
DIFFUSION
EQUATIONS
KINETIC EQUATIONS
MONTE CARLO METHOD
PLASMA
ROTATING PLASMA
THERMONUCLEAR DEVICES
TOKAMAK DEVICES
TRANSPORT THEORY