中国物理B ›› 2006, Vol. 15 ›› Issue (1): 156-162.doi: 10.1088/1009-1963/15/1/025

• PHYSICS OF GASES, PLASMAS, AND ELECTRIC DISCHARGES • 上一篇    下一篇

Two-dimensional relativistic electromagnetic dromion-like soliton in a cold transparent plasma

王云良, 周忠祥, 袁承勋, 姜向前, 秦汝虎   

  1. Department of Applied Physics, Harbin Institute of Technology, Harbin 150001, China
  • 收稿日期:2005-03-04 修回日期:2005-09-19 出版日期:2006-01-20 发布日期:2006-01-20
  • 基金资助:
    Project supported by the Astronavigation Foundation of China (Grant No 03-5.2).

Two-dimensional relativistic electromagnetic dromion-like soliton in a cold transparent plasma

Wang Yun-Liang (王云良), Zhou Zhong-Xiang (周忠祥), Yuan Cheng-Xun (袁承勋), Jiang Xiang-Qian (姜向前), Qin Ru-Hu (秦汝虎)   

  1. Department of Applied Physics, Harbin Institute of Technology, Harbin 150001, China
  • Received:2005-03-04 Revised:2005-09-19 Online:2006-01-20 Published:2006-01-20
  • Supported by:
    Project supported by the Astronavigation Foundation of China (Grant No 03-5.2).

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摘要： By using a standard multiple scale method, a Davey--Stewartson (DS) equation has been derived and also applied to a multi-dimensional analytical investigation on the interaction of an ultra-intense laser pulse with a cold unmagnetized transparent electron-ion plasma. The regions of instability are found by considering the modulation instability of a plane wave solution of the DS equation. The DS equation is just of the Davey--Stewartson 1 (DS1) type and admits a dromion solution, i.e. a two-dimensional (2D) dromion soliton decaying exponentially in all spatial directions. A 2D relativistic electromagnetic dromion-like soliton (2D REDLS) is derived for a vector potential.

Abstract: By using a standard multiple scale method, a Davey--Stewartson (DS) equation has been derived and also applied to a multi-dimensional analytical investigation on the interaction of an ultra-intense laser pulse with a cold unmagnetized transparent electron-ion plasma. The regions of instability are found by considering the modulation instability of a plane wave solution of the DS equation. The DS equation is just of the Davey--Stewartson 1 (DS1) type and admits a dromion solution, i.e. a two-dimensional (2D) dromion soliton decaying exponentially in all spatial directions. A 2D relativistic electromagnetic dromion-like soliton (2D REDLS) is derived for a vector potential.

Key words: relativistic electromagnetic soliton, laser plasma

中图分类号:  (Solitons; BGK modes)

  • 52.35.Sb
52.35.Py (Macroinstabilities (hydromagnetic, e.g., kink, fire-hose, mirror, ballooning, tearing, trapped-particle, flute, Rayleigh-Taylor, etc.)) 52.38.-r (Laser-plasma interactions)