Transverse modulation instability of white light in plasmas

POSTER

Abstract

The transverse modulation, or filamentation, instability of intense radiation with arbitrary spatial coherence in plasmas is analyzed with generalized photon kinetic theory [1,2], which includes both forward and backward scattered radiation. The instability threshold as well as the growth rate dependence with the laser bandwidth are determined. The analytical results are compared with numerical solutions of the generalized dispersion relation and with full PIC simulations. Consequences of white light driven parametric instabilities in ICF and fast ignition scenarios are also discussed. \newline [1] J. P. Santos, and L. O. Silva, Journal of Mathematical Physics 46, 102901 (2005) \newline [2] J. E. Santos, L. O. Silva, R. Bingham, Physical Review Letters 98, 235001 (2007), also arXiv:0704.2831 (http://arxiv.org/abs/0704.2831)

Authors

  • Luis Silva

    • GoLP/CFP Instituto Superior T\'ecnico, Lisboa, Portugal
    • GoLP/Centro de F\'isica dos Plasmas, Instituto Superior T\'ecnico, Lisboa, Portugal
    • Instituto Superior Tecnico, Portugal
    • IST - Lisbon
    • IST, Lisbon
    • GoLP/Centro de F\'isica dos Plasmas, Instituto Superior T\'ecnico

  • R. Bingham

    • RAL, UK

  • B. Brandao

    • IST, Lisbon

  • J. Santos

    • U. Cambridge, UK