期刊
PLASMA PHYSICS AND CONTROLLED FUSION
卷 56, 期 9, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/0741-3335/56/9/095020
关键词
plasma waves; RF heating; Landau damping
资金
- China National Magnetic Confinement Fusion Science Program [2013GB111000]
- China Scholarship Council [201306010032]
- Tri Alpha Energy, Inc.
- US Department of Energy (DOE) SciDAC GSEP Center
- Oak Ridge Leadership Computing Facility at Oak Ridge National Laboratory (DOE) [DE-AC05-00OR22725]
- National Energy Research Scientific Computing Center (DOE) [DE-AC02-05CH11231]
- National Supercomputing Center in Tianjin
Global particle simulations of the lower hybrid (LH) waves have been carried out using fully kinetic ions and drift kinetic electrons with a realistic electron-to-ion mass ratio. The LH wave frequency, mode structure, and electron Landau damping from the electrostatic simulations agree very well with the analytic theory. Linear simulation of the propagation of a LH wave-packet in the toroidal geometry shows that the wave propagates faster in the high field side than the low field side, in agreement with a ray tracing calculation. This poloidal asymmetry arises from the non-conservation of the poloidal mode number due to the non-uniform magnetic field. In contrast, the poloidal mode number is conserved in the cylindrical geometry with the uniform magnetic field.
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