THE MODULATIONAL INSTABILITY OF ALFVEN WAVES

Du Xiao-long; Lu Sheng-zhi

doi:10.11728/cjss1994.01.015

Volume 14 Issue 1

Jan. 1994

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Article Navigation > Chinese Journal of Space Science > 1994 > 14(1): 15-22

Du Xiao-long, Lu Sheng-zhi. THE MODULATIONAL INSTABILITY OF ALFVEN WAVES[J]. Chinese Journal of Space Science, 1994, 14(1): 15-22. doi: 10.11728/cjss1994.01.015

Citation:

Du Xiao-long, Lu Sheng-zhi. THE MODULATIONAL INSTABILITY OF ALFVEN WAVES[J]. Chinese Journal of Space Science, 1994, 14(1): 15-22. doi: 10.11728/cjss1994.01.015

Du Xiao-long, Lu Sheng-zhi. THE MODULATIONAL INSTABILITY OF ALFVEN WAVES[J]. Chinese Journal of Space Science, 1994, 14(1): 15-22. doi: 10.11728/cjss1994.01.015

Citation:

Du Xiao-long, Lu Sheng-zhi. THE MODULATIONAL INSTABILITY OF ALFVEN WAVES[J]. Chinese Journal of Space Science, 1994, 14(1): 15-22. doi: 10.11728/cjss1994.01.015

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THE MODULATIONAL INSTABILITY OF ALFVEN WAVES

doi: 10.11728/cjss1994.01.015

Du Xiao-long¹,
Lu Sheng-zhi²

1.
Department of Applioed Physics, Beijing Institute of Technology, Beijing 100081
2.
Department of Physics, Beijing Normal University

Received Date: 1993-01-12
Rev Recd Date: 1900-01-01
Publish Date: 1994-01-24

Abstract

Abstract

Considering the actions of the porderomotive force from both density variations and changes of flow speed, using Karpman's method, the modulational instability of Alfven waves has been investigated. For the two branches of left and right hand circular polarization waves, the coalitions for the existence of wave packet solitons and of anti-wavepacket solitons, the correlations between density fluctuations and wave energy densities, and the nonlinear frequency drifts have been obtained respectively.For the left hand circular polarization Alfven waves with a finite amplitude, the conditions for the occurence of instabilities and it's growth rate have been obtained also.
- Alfven wave,
- Modulational instability,
- Soliton