Stimulated Raman Scattering of high power beam in quantum plasma: Effect of relativistic-ponderomotive Force
Abstract
The present work explores stimulated Raman scattering of a high-power beam in quantum plasma due to the joint action of relativistic ponderomotive force (RP force). The RP force creates nonlinearity in the plasma’s dielectric function. This results in a change in the density profile in a transverse direction to the axis of the pump beam. This change in density profile has a significant impact on all three waves involved in the process, viz., the input beam, the electron plasma beam, and the scattered wave. Second-order ODEs for all three waves, as well as the SRS back-reflectivity expression, are set up and further solved numerically. Impact of well-known laser-plasma parameters, quantum contribution, and combined action of RP force on beam waists of various waves, and also on SRS back-reflectivity are explored.
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