Benchmarking of collision operators with momentum source corrections

Journal Article · Sat May 15 00:00:00 EDT 2010 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.3420290· OSTI ID:21371123

Maassberg, H; Beidler, C D ^[1]

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1. EURATOM Association, Max-Planck-Institut fuer Plasmaphysik, D-17491 Greifswald (Germany)

Several linearized collision operator models with parallel momentum conservation enforced by source functions are benchmarked against the correct collision operator based on Rosenbluth potentials. The model operators without energy diffusion allow for an analytic solution of a generalized Spitzer problem. For the other operators under investigation, an integrodifferential equation is solved. The benchmarking is performed both for the parallel conductivity with the ions assumed at rest and for the bootstrap current, where ion and electron flows are collisionally coupled. The accuracy of the results obtained with the operators varies from rather poor in the case of the simplest monoenergetic model to quite satisfactory for the models employing an energy-weighted parallel momentum source function.

• OSTI ID: 21371123
• Journal Information: Physics of Plasmas, Vol. 17, Issue 5; Other Information: DOI: 10.1063/1.3420290; (c) 2010 American Institute of Physics; ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ANALYTICAL SOLUTION
BOOTSTRAP CURRENT
COLLISIONS
CORRECTIONS
DIFFUSION
ELECTRIC CONDUCTIVITY
ELECTRONS
INTEGRO-DIFFERENTIAL EQUATIONS
IONS
PLASMA
CHARGED PARTICLES
CURRENTS
ELECTRIC CURRENTS
ELECTRICAL PROPERTIES
ELEMENTARY PARTICLES
EQUATIONS
FERMIONS
LEPTONS
MATHEMATICAL SOLUTIONS
PHYSICAL PROPERTIES