Monte Carlo approach to collisional transport
- Dipartimento di Scienze Matematiche, Universita di Trieste, Trieste (Italy)
- Princeton Plasma Physics Laboratory, Princeton University, Princeton, New Jersey 08543 (United States)
- Consorzio di Magnetofluidodinamica, Dipartimento di Scienze Matematiche, Universita' di Trieste, Trieste (Italy)
A linearized discretization approach is proposed for the numerical investigation of the gyrokinetic equation describing the dynamics of a strongly rotating plasma in a toroidally axisymmetric configuration. The discretization scheme allows the numerical evaluation of the neoclassical transport matrix in terms of a suitably discretized distribution function. A basic feature of the discretization scheme here developed is that it permits the introduction of Monte Carlo collision operators to advance in time the gyrokinetic state of a suitable set of test particles. Such operators, which apply to general non-normal gyrokinetic coordinates, are constructed in such a way as to conserve exactly the collisional invariants. A fundamental consequence is that the neoclassical transport coefficients determined in this way fulfill exactly both Onsager's symmetry relations and the condition of strict ambipolarity for the particle-flux transport coefficients. Such properties are proven to be satisfied independently of the number of test particles used in the discretization scheme.
- DOE Contract Number:
- AC02-76CH03073
- OSTI ID:
- 7024970
- Journal Information:
- Physics of Plasmas; (United States), Journal Name: Physics of Plasmas; (United States) Vol. 1:8; 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
EQUATIONS
KINETIC EQUATIONS
MONTE CARLO METHOD
ONSAGER RELATIONS
PLASMA
PLASMA SIMULATION
ROTATING PLASMA
SIMULATION
THERMONUCLEAR DEVICES
TOKAMAK DEVICES
TRANSPORT THEORY