Spatial temporal theory of Raman forward scattering

Journal Article · Mon Apr 01 04:00:00 EST 1996 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.871728· OSTI ID:279765

Decker, C D ^[1]; Mori, W B ^[2]; Katsouleas, T ^[3]; Hinkel, D E ^[1]

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1. Lawrence Livermore National Laboratory, Livermore, California 94550 (United States)
2. Departments of Electrical Engineering and Physics, University of California at Los Angeles, Los Angeles, California 90024 (United States)
3. Department of Electrical Engineering, University of Southern California, Los Angeles, California 90089 (United States)

Raman forward scattering is examined in regimes relevant to short-pulse ({lt}1ps) high-intensity ({ital I}{le}10{sup 18} W/cm{sup 2}) laser-plasma interactions. A set of coupled differential equations is derived which describes the spatial-temporal growth of forward and near forward Raman scattering for plane wave pumps. An exact solution for direct forward scattering is obtained for physically relevant initial/boundary conditions. Furthermore, the asymptotic behavior at near forward angles is compared to finite width analyses in which the paraxial ray approximation is made. Noise sources for Raman forward scattering are examined. The consequences of these results to present and near term experiments are discussed. {copyright} {ital 1996 American Institute of Physics.}

• Research Organization: University of California
• DOE Contract Number: FG03-92ER40727; FG03-93ER40776
• OSTI ID: 279765
• Journal Information: Physics of Plasmas, Journal Name: Physics of Plasmas Journal Issue: 4 Vol. 3; ISSN PHPAEN; ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
BEAM-PLASMA SYSTEMS
INSTABILITY GROWTH RATES
LASER RADIATION
LIGHT SCATTERING
PHOTON-MOLECULE COLLISIONS
RAMAN EFFECT