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1 results

  • Burst behavior due to the quasimode excited by stimulated Brillouin scattering in high-intensity laser–plasma interactions

  • Q. S. Feng, L. H. Cao, Z. J. Liu, C. Y. Zheng, X. T. He
  • Journal:
    High Power Laser Science and Engineering / Volume 7 / 2019
    Published online by Cambridge University Press:
    04 November 2019, e58
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  • The strong-coupling mode, called the “quasimode”, is excited by stimulated Brillouin scattering (SBS) in high-intensity laser–plasma interactions. Also SBS of the quasimode competes with SBS of the fast mode (or slow mode) in multi-ion species plasmas, thus leading to a low-frequency burst behavior of SBS reflectivity. Competition between the quasimode and the ion-acoustic wave (IAW) is an important saturation mechanism of SBS in high-intensity laser–plasma interactions. These results give a clear explanation of the low-frequency periodic burst behavior of SBS and should be considered as a saturation mechanism of SBS in high-intensity laser–plasma interactions.