Chinese Journal of Lasers B, 1994, 3 (1): 29, 网络出版: 2007-08-17
Nonlinear Evolution of Driven Electron Plasma Oscillations in Inhomogeneous Plasmas
Nonlinear Evolution of Driven Electron Plasma Oscillations in Inhomogeneous Plasmas
摘要
Abstract
The effects of both the relativistic-electron-mass variation and the convective nonlinearity on the excitation of electron plasma oscillations in cold inhomogeneous plasmas are analyzed. The electron plasma oscillations are excited by the linear mode conversion of intense electromagnetic waves, or by the beating of two electromagnetic waves. A nonlinear driven plasma wave equation is derived by using the electron hydrodynamic equations in Eulerian variables as well as Maxwell's equations. The plasma wave frequency detuning, caused by both the relativistic and convective nonlinearities, is hown explicity. The evolution of the driven field is obtained numerically to show the interplay between the two nonlinearities for various density scale lengths, pump field strengths and collisional dampling rates.
SHENG Zhengming, XU Zhizhan, YU Wei, MA Jinxiu. Nonlinear Evolution of Driven Electron Plasma Oscillations in Inhomogeneous Plasmas[J]. Chinese Journal of Lasers B, 1994, 3(1): 29. SHENG Zhengming, XU Zhizhan, YU Wei, MA Jinxiu. Nonlinear Evolution of Driven Electron Plasma Oscillations in Inhomogeneous Plasmas[J]. 中国激光(英文版), 1994, 3(1): 29.