Nonlocal theory of stimulated Raman backscattering in a strongly magnetized plasma |
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| Authors: | B. S. Sharma N. K. Jaiman |
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| Affiliation: | (1) Department of Physics, Govt. College, Kota, 324001, India;(2) Department of Physics, Rajasthan Technical University, Kota, 324005, India |
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| Abstract: | ![]()
A nonlocal theory of stimulated Raman backscattering (BSRS) parametric instability of a large amplitude electromagnetic (EM) mode in a strongly magnetized plasma e.g., one encountered in a plasma filled backward wave oscillator, is reported. The EM mode is unstable to parametric instability in a magnetized plasma and decays into a Trivelpiece-Gould (TG) mode and a sideband EM mode. The growth rate of instability (Γ) scales proportional to three-fourth power of plasma density. For a typical BWO the growth rate is ∼108 s-1 |
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| Keywords: | PACS. 52.35.Mw Nonlinear phenomena: waves, wave propagation, and other interactions 52.35.Py Macroinstabilities 52.38.-r Laser-plasma interactions 52.59.Rz Free-electron devices |
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