Dependence of stimulated Brillouin scattering on focusing optic {ital F} number in long scale-length plasmas
- Los Alamos National Laboratory, P.O. Box 1663, Los Alamos, New Mexico 87545 (United States)
- Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94551 (United States)
The onset of stimulated Brillouin scattering (SBS) has been examined by varying the effective {ital F} number (lens focal length/incident beam diameter) of the optical system used to irradiate a performed 1 mm long, longitudinally uniform hydrocarbon (CH) plasma. SBS onset occurs at higher average laser intensity for smaller {ital F}, in qualitative agreement with theory. Quantitative comparison between theory and experiment, and implications for the National Ignition Facility [Phys. Plasmas {bold 2}, 2480 (1995)] are discussed. {copyright} {ital 1996 American Institute of Physics.}
- OSTI ID:
- 278964
- Journal Information:
- Physics of Plasmas, Journal Name: Physics of Plasmas Journal Issue: 3 Vol. 3; ISSN PHPAEN; ISSN 1070-664X
- Country of Publication:
- United States
- Language:
- English
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