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Independent-hot-spot approach to multibeam laser-plasma instabilities
R K Follett1, H Wen1, D H Froula1
1Laboratory for Laser Energetics, University of Rochester, 250 East River Road, Rochester, New York 14623, USA.
Physical Review. E
|July 20, 2022
Abstract:
The independent-hot-spot model is used to develop an analytic formulation for multibeam laser-plasma instabilities in inhomogeneous plasmas. The model is applied to the absolute two-plasmon-decay instability and shows good agreement with simulations and experiments. The success of the model indicates the emergence of single-speckle behavior for sufficiently large speckles sizes.

