Particle Trapping in Raman Backscatter

POSTER

Abstract

We present an approach to modelling the effects of particle trapping on coherent Raman backscatter (RBS) in plasmas with negligible linear Landau damping. Using the formalism of adiabatic separatrix crossing [1], we calculate the trapped particle fraction and their average action, and use this to approximate a kinetic detuning term for use in a three-wave model of RBS. 1. Tennyson, Cary, Escande. PRL 56, 2117 (1986).

Authors

  • Ryan Lindberg

    U.C. Berkeley

  • Andrew Charman

  • Min Sup Hur

    KERI, Korea Electrotechnology Research Institute

  • Jonathan Wurtele

    LBNL Center for Beam Physics