| PHYSICS OF GASES, PLASMAS, AND ELECTRIC DISCHARGES |
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Effects of Perpendicular Thermal Velocities on the Transverse Instability in Electron Phase Space Holes |
WU Ming-Yu1, WU Hong1,2, LU Quan-Ming1, XUE Bing-Sen3 |
| 1CAS Key Laboratory of Basic Plasma Physics, School of Earth and Space Sciences, University of Science and Technology of China, Hefei 230026 2Department of Physics, School of Sciences, Jimei University, Xiamen 361021 3Space Weather Operation and Research Division, China Meteorology Administration, Beijing 100081 |
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| Cite this article: |
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WU Ming-Yu, WU Hong, LU Quan-Ming et al 2010 Chin. Phys. Lett. 27 095201 |
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Abstract A multi-dimensional electron phase-space hole (electron hole) is considered to be unstable to the transverse instability. We perform two-dimensional (2D) particle-in-cell (PIC) simulations to study the evolutions of electron holes in weakly magnetized plasma (Ωe <ωpe, where Ωe and ωpe are the electron gyrofrequency and plasma frequency, respectively), and the effects of perpendicular thermal velocities on the transverse instability are investigated. The transverse instability can cause decay of the electron holes. We find that with the increasing perpendicular thermal velocity tending to stabilize the transverse instability, the corresponding wave numbers decrease.
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| Keywords:
52.35.Sb
52.65.Rr
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Received: 31 May 2010
Published: 25 August 2010
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