Spatiotemporal evolution of parametric instabilities driven by short laser pulses: Two-dimensional analysis
- Department of Mechanical Engineering, University of Rochester, Rochester, New York 14627 (United States)
- Department of Physics and Astronomy, University of Rochester, Rochester, New York 14627 (United States)
The spatiotemporal evolution of parametric instabilities such as stimulated Raman scattering is studied analytically in time and two spatial dimensions. Initial and boundary conditions are chosen to represent the entrance, propagation, and exit of a laser pulse of finite extent convecting through a homogeneous collisional plasma with definite boundaries. For most scattering angles the growth is found to be dominated by two-dimensional effects with one-dimensional amplitudes being valid for only a small range of angles corresponding to near forward and near backward scattering. The sideward convection alters the spatiotemporal character of the instability and inhibits but does not suppress its growth. {copyright} {ital 1997 American Institute of Physics.}
- Research Organization:
- Univ. of Rochester, NY (United States)
- DOE Contract Number:
- FC03-92SF19460
- OSTI ID:
- 538480
- Journal Information:
- Physics of Plasmas, Vol. 4, Issue 9; Other Information: PBD: Sep 1997
- Country of Publication:
- United States
- Language:
- English
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