Threshold and amplification of convective two-plasmon decay instability in collisional laser plasma

G. P. Gupta; B. K. Sinha

doi:10.1117/12.155794

10 September 1993 Threshold and amplification of convective two-plasmon decay instability in collisional laser plasma

G. P. Gupta, B. K. Sinha

Author Affiliations +

Proceedings Volume 1928, International Symposium on Laser-Plasma Interactions; (1993) https://doi.org/10.1117/12.155794
Event: Laser-Plasma Interactions: the International Symposium, 1992, Shanghai, China

Abstract

The expressions for the threshold intensity and amplification coefficient, in practical units, of the convective two-plasmon decay instability in a laser-produced plasma are obtained using the fluid theory and accounting for the plasmon collisional damping. Analyses of these expressions show that the plasmon collisional damping significantly increases the threshold for excitation of the instability and reduces the amplification coefficient as well as the excited spectrum of the plasmons substantially for electron temperatures smaller than 1 keV.

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G. P. Gupta and B. K. Sinha "Threshold and amplification of convective two-plasmon decay instability in collisional laser plasma", Proc. SPIE 1928, International Symposium on Laser-Plasma Interactions, (10 September 1993); https://doi.org/10.1117/12.155794

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