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The effect of induced spatial incoherence on the absolute Raman instability (1991)

Guzdar, P. N. ; Tan, W. ; Lee, Y. C. ; [et al.]

New York, NY : American Institute of Physics (AIP)

Physics of Fluids 3 (1991), S. 776-780

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ISSN: 1089-7666

Source: AIP Digital Archive

Topics: Physics

Notes: A numerical and analytical study of the Raman instability in a homogeneous plasma is presented in which the pump has been modeled to include the effects of broad bandwidth and the induced spatial incoherence (ISI) method of beam smoothing. For a time-averaged homogeneous growth rate γ¯0 and a bandwidth σ, there is a significant reduction in Raman backscattering when σ(approximately-greater-than)2γ0, for γ¯20 near threshold intensity. However, for γ¯20 very large compared to the threshold, neither ISI nor bandwidth affects Raman scattering.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1063/1.859873

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