Acta Photonica Sinica, Volume. 39, Issue 10, 1871(2010)
Influence of Strong Langmuir Turbulence in Laser-plasma by Multi-photon Nonlinear Compton Scattering
According to the model of multi-photon nonlinear Compton scattering,the influence of the multi-photon nonlinear Compton scattering on the strong Langmuir turbulence spectra in the laser-plasma is studied. A new mechanism of the strong Langmuir turbulence formed by the incident light and scattered optical is given.The revised equation met by the mutual action on the transverse plasma wave,the strong Langmuir turbulence wave and ion acoustic wave and its results of the numerical number modulation are also given. The results show that because the collision frequency between the transverse plasma wave and strong Langmuir turbulence wave is greatly increased by Compton scattering, along the time evolution,the transformation of the energy from the small-k region to the large-k region between the transverse plasma wave and Langmuir wave is faster than that before Compton scattering,and the strenuous collapsing is taken place at the same time. During the anaphase of collapse,the nonlinear effect of the laser-plasma excites out the high degree resonance waves. The energy is diverted from one of the resonance wave to another,and the infinite high degrees resonance wave is formed. The phenomenon on breakage of the wave,the strong Langmuir turbulence controlled by the modulation instability,the stronger laser filamentation and energy egalitarian are taken place. The research results will provide a theoretic support for the further study on the increasing speed mechanism of the strong Langmuir turbulence,abnormal collision and laser heating experimentation and fast igniting experimentation.
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YU Ding-chen, HAO Xiao-fei, HAO Dong-shan. Influence of Strong Langmuir Turbulence in Laser-plasma by Multi-photon Nonlinear Compton Scattering[J]. Acta Photonica Sinica, 2010, 39(10): 1871
Received: Mar. 23, 2010
Accepted: --
Published Online: Dec. 7, 2010
The Author Email: Dong-shan HAO (haodongshn1948@126.com)
CSTR:32186.14.