Lower-hybrid drift instability in a thin current sheet with κ velocity distribution

Feng Huang; Yinhua Chen; Guifen Shi; Zuquan Hu; Haiou Peng; Jugao Zheng; Yu, M. Y.
April 2009
Physics of Plasmas;Apr2009, Vol. 16 Issue 4, p042107
Academic Journal
The lower-hybrid drift instability (LHDI) in a thin current sheet in the intermediate-wavelength ([formula], where ky, ρe, and ρi are the wave vector and the electron and ion gyroradii, respectively) regime for particles with κ velocity distribution is studied. The latter is more suitable for describing nonthermal distributions with an enhanced high-energy tail and includes the Maxwellian as a limiting case. It is shown that linear electromagnetic LHDI can be excited near the center of the current sheet. The growth rate decreases, but the electromagnetic component of the LHD mode increases with increase in hot particles.


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