Kinetic water-bag model of global collisional drift waves and ion temperature gradient instabilities in cylindrical geometry
- Institut Jean Lamour, UMR 7198 CNRS-Universite de Lorraine, Bd des Aiguillettes, 54 506 Vandoeuvre-les-Nancy Cedex (France)
- LEMTA, UMR 7563 CNRS-Universite de Lorraine, 2, av. de la Foret de Haye, 54 518 Vandoeuvre-les-Nancy Cedex (France)
Collisional drift waves and ion temperature gradient (ITG) instabilities are studied using a linear water-bag kinetic model [P. Morel et al., Phys. Plasmas 14, 112109 (2007)]. An efficient spectral method, already validated in the case of drift waves instabilities [E. Gravier et al., Eur. Phys. J. D 67, 7 (2013)], allows a fast solving of the global linear problem in cylindrical geometry. The comparison between the linear ITG instability properties thus computed and the ones given by the COLUMBIA experiment [R. G. Greaves et al., Plasma Phys. Controlled Fusion 34, 1253 (1992)] shows a qualitative agreement. Moreover, the transition between collisional drift waves and ITG instabilities is studied theoretically as a function of the ion temperature profile.
- OSTI ID:
- 22130416
- Journal Information:
- Physics of Plasmas, Vol. 20, Issue 4; Other Information: (c) 2013 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 1070-664X
- Country of Publication:
- United States
- Language:
- English
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