Gyrokinetic-water-bag modeling of low-frequency instabilities in a laboratory magnetized plasma column
- Laboratoire PMIA, UMR 7040 CNRS-Universite Henri Poincare, F-54506 Vandoeuvre-les-Nancy Cedex (France)
A new model is presented, named collisional-gyro-water-bag (CGWB), which describes the collisional drift waves and ion-temperature-gradient (ITG) instabilities in a plasma column. This model is based on the kinetic gyro-water-bag approach recently developed [P. Morel et al., Phys. Plasmas 14, 112109 (2007)] to investigate ion-temperature-gradient modes. In CGWB electron-neutral collisions have been introduced and are now taken into account. The model has been validated by comparing CGWB linear analysis with other models previously proposed and experimental results as well. Kinetic effects on collisional drift waves are investigated, resulting in a less effective growth rate, and the transition from collisional drift waves to ITG instability depending on the ion temperature gradient is studied.
- OSTI ID:
- 21259697
- Journal Information:
- Physics of Plasmas, Vol. 15, Issue 12; Other Information: DOI: 10.1063/1.3036930; (c) 2008 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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