Water bag modeling of a multispecies plasma
- Institut Jean Lamour, UMR 7198 CNRS-Universite Henri Poincare, F-54506 Vandoeuvre-les-Nancy Cedex (France)
- Association EURATOM-CEA, CEA/DSM/IRFM, CEA Cadarache, Saint-Paul-lez-Durance, F-13108 Cedex (France)
We report in the present paper a new modeling method to study multiple species dynamics in magnetized plasmas. Such a method is based on the gyrowater bag modeling, which consists in using a multistep-like distribution function along the velocity direction parallel to the magnetic field. The choice of a water bag representation allows an elegant link between kinetic and fluid descriptions of a plasma. The gyrowater bag model has been recently adapted to the context of strongly magnetized plasmas. We present its extension to the case of multi ion species magnetized plasmas: each ion species being modeled via a multiwater bag distribution function. The water bag modelization will be discussed in details, under the simplification of a cylindrical geometry that is convenient for linear plasma devices. As an illustration, results obtained in the linear framework for ion temperature gradient instabilities are presented, that are shown to agree qualitatively with older works.
- OSTI ID:
- 21537298
- Journal Information:
- Physics of Plasmas, Vol. 18, Issue 3; Other Information: DOI: 10.1063/1.3565019; (c) 2011 American Institute of Physics; ISSN 1070-664X
- Country of Publication:
- United States
- Language:
- English
Similar Records
Multi-water-bag models of ion temperature gradient instability in cylindrical geometry
Gyrokinetic modeling: A multi-water-bag approach