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Chin. Phys., 2007, Vol. 16(8): 2449-2454    DOI: 10.1088/1009-1963/16/8/049

Density cavities generated by plasma--field interactions in the far wake region of a space vehicle

Li Xiao-Qinga, Luo Qingb, Hu Tao-Pingc
a College of Physical Science and Technology, Nanjing Normal University, Nanjing 210097, China; b Department of Physics, Nanjing Xiaozhuang College, Nanjing 210017, China; c Laboratory of Photonics and Optical Communications, School of Electronic Science and Engineering, Southeast University, Nanjing 210096,China;College of Information Science and Technology, Nanjing Forestry University, Nanjing 210037, China
Abstract  Under the consideration of non-steady case, a set of equations is derived, which describes the non-steady nonlinear interactions between plasma and field in the far wake region of a space vehicle. Numerical calculations are also made and the numerical results show that density cavities and electromagnetic solitary waves are generated due to the modulation instability, if the envelope of high frequency modulation field is strong enough. This is of great significance to the detection of disguised space vehicles.
Keywords:  density cavity      modulation instability      plasmas  
Received:  28 September 2006      Revised:  24 November 2006      Published:  20 August 2007
PACS:  52.40.-w (Plasma interactions (nonlaser))  
  52.35.Hr (Electromagnetic waves (e.g., electron-cyclotron, Whistler, Bernstein, upper hybrid, lower hybrid))  
  52.35.Mw (Nonlinear phenomena: waves, wave propagation, and other interactions (including parametric effects, mode coupling, ponderomotive effects, etc.))  
  52.35.Py (Macroinstabilities (hydromagnetic, e.g., kink, fire-hose, mirror, ballooning, tearing, trapped-particle, flute, Rayleigh-Taylor, etc.))  
  52.35.Sb (Solitons; BGK modes)  
Fund: Project supported by the Nanjing Forestry University Foundation, China (Grant No~163070019).

Cite this article: 

Hu Tao-Ping, Luo Qing, Li Xiao-Qing Density cavities generated by plasma--field interactions in the far wake region of a space vehicle 2007 Chin. Phys. 16 2449

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