The effect of bandwidth on the convective Raman instability in inhomogeneous plasmas

Journal Article · Tue Oct 01 04:00:00 EDT 1991 · Physics of Fluids B; (United States)

DOI:https://doi.org/10.1063/1.859921· OSTI ID:5242074

Guzdar, P N; Liu, C S ^[1]; Lehmberg, R H ^[2]

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1. Laboratory for Plasma Research, University of Maryland, College Park, Maryland (USA)
2. Naval Research Laboratory, Washington, D.C. (USA)

The effect of bandwidth on the convective amplification of the Raman instability in the underdense, inhomogeneous plasma is investigated. For the case when the homogeneous growth rate {gamma}{sub 0}{much lt}{Delta}{omega}, where {Delta}{omega} is the bandwidth, it is shown both analytically and numerically that there is {ital no} effect of bandwidth on the convective amplification. The reduction in the homogeneous growth rate due to the bandwidth is compensated for by an increase in the interaction region such that the convective amplification is unaffected. For {gamma}{sub 0}{approx gt}{Delta}{omega} there is a statistical enhancement in the amplification factor.

• OSTI ID: 5242074
• Journal Information: Physics of Fluids B; (United States), Journal Name: Physics of Fluids B; (United States) Vol. 3:10; ISSN 0899-8221; ISSN PFBPE
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700107* -- Fusion Energy-- Plasma Research-- Instabilities
ANALYTICAL SOLUTION
CONVECTIVE INSTABILITIES
INHOMOGENEOUS PLASMA
INSTABILITY
INSTABILITY GROWTH RATES
NUMERICAL SOLUTION
PLASMA
PLASMA INSTABILITY
RAMAN EFFECT