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arXiv · 1906.11616

Burst behavior due to quasimode excited by stimulated Brillouin scattering in high-intensity laser-plasma interaction

Q. S. Feng·L. H. Cao·Z. J. Liu·C. Y. Zheng·X. T. He
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Abstract

The strong-coupling mode, called quasimode, will be excited by stimulated Brillouin scattering (SBS) in high-intensity laser-plasma interaction. And SBS of quasimode will compete with SBS of fast mode (or slow mode) in multi-ion species plasmas, thus leading to a low-frequency burst behavior of SBS reflectivity. The competition of quasimode and ion-acoustic wave (IAW) is an important saturation mechanism of SBS in high-intensity laser-plasma interaction. These results give a clear explanation to the low-frequency periodic burst behavior of SBS and should be considered as a saturation mechanism of SBS in high-intensity laser-plasma interaction.

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Q. S. Feng, L. H. Cao, Z. J. Liu, C. Y. Zheng, X. T. He. 2019-06-24. Burst behavior due to quasimode excited by stimulated Brillouin scattering in high-intensity laser-plasma interaction. https://arxiv.org/abs/1906.11616

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