Critical Initial Amplitude of Langmuir Wave Damping

XU Hui (徐慧); SHENG Zhengming (盛政明)

doi:10.1088/1009-0630/14/3/01

Plasma Science and Technology > 2012 > 14(3): 181-268. > DOI: 10.1088/1009-0630/14/3/01

XU Hui (徐慧), SHENG Zhengming (盛政明). Critical Initial Amplitude of Langmuir Wave Damping[J]. Plasma Science and Technology, 2012, 14(3): 181-268. DOI: 10.1088/1009-0630/14/3/01

Citation:

XU Hui (徐慧), SHENG Zhengming (盛政明). Critical Initial Amplitude of Langmuir Wave Damping[J]. Plasma Science and Technology, 2012, 14(3): 181-268. DOI: 10.1088/1009-0630/14/3/01

Citation:

XU Hui (徐慧), SHENG Zhengming (盛政明). Critical Initial Amplitude of Langmuir Wave Damping[J]. Plasma Science and Technology, 2012, 14(3): 181-268. DOI: 10.1088/1009-0630/14/3/01

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Critical Initial Amplitude of Langmuir Wave Damping

1 Shandong Provincial Key Laboratory of Laser Polarization and Information Technology, Department of Physics, Qufu Normal University, Qufu 273165, China 2 Key Laboratory for Laser Plasmas (Ministry of Education) and Department of Physics, Shanghai Jiaotong University, Shanghai 200240, China 3 Beijing National Laboratory for Condensed Matters, Institute of Physics, Chinese Academy of Science, Beijing 100080, China

Funds: supported by NSFC (Nos. 10947108, 11075105), the National Basic Research Program (No. 2007CB310406), the Natural Science Foundation of Shandong Province (No. Q2008A05), the Foundation of Qufu Normal University (No. BSQD09011)

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Received Date: May 04, 2011

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Abstract

Abstract

By one-dimensional Vlasov-Poisson simulation, the critical initial state marking the transition between the Landau scenario, in which the electric field is definitively damped to zero and the O’Neil scenario, in which the Landau damping is stopped after a certain damping stage, are studied. It is found that the critical initial amplitude ?* can only exist when the product of the wave number (km) and the electron thermal velocity (vth) is moderate, that is, 0.2
- landau damping,
- critical initial amplitude,
- Vlasov-poisson simulation

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