https://doi.org/10.1140/epjd/e2008-00073-7
Nonlocal theory of stimulated Raman backscattering in a strongly magnetized plasma
1
Department of Physics, Govt. College, Kota, 324001, India
2
Department of Physics, Rajasthan Technical University, Kota, 324005, India
Corresponding author: a bs_phy@yahoo.com
Received:
12
December
2007
Published online:
18
April
2008
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
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
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2008
