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Physical Review E

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Lower hybrid drift instability in a neutral sheet with $O^{+}$ ions

Feng Huang, Yinhua Chen, Hai-Ou Peng, Ju-Gao Zheng, Gui-Fen Shi, and Zu-Quan Hu

Key Laboratory of Basic Physics, Chinese Academy of Science, and Department of Modern Physics, University of Science and Technology of China, 230026 Hefei, People’s Republic of China

Institute for Fusion Theory and Simulation, Department of Physics, Zhejiang University, 310027 Hangzhou, China and Institute of Theoretical Physics I, Ruhr University, D-44780 Bochum, Germany

Phys. Rev. E 80, 056401 – Published 3 November, 2009

DOI: https://doi.org/10.1103/PhysRevE.80.056401

Abstract

The electromagnetic lower-hybrid drift instability (LHDI) in the intermediate-wavelength regime $k_{y} \sqrt{ρ_{i} ρ_{e}} \sim 1$ , where $k_{y}$ and $ρ_{e, i}$ are the wave vector and the electron and ion gyroradii, respectively, in a thin plasma sheet containing electrons and $H^{+}$ and $O^{+}$ ions is examined using kinetic theory. It is shown that the growth rate of the LHDI first decreases and then increases with increase in the $O^{+}$ content and temperature, with a minimum at a moderate level of the latter. The results can be relevant to understanding magnetic reconnection in the presence of LHDI.

Article Text

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