Dependence of stimulated Brillouin scattering on laser intensity, laser {ital f} number, and ion species in hohlraum plasmas

Journal Article · Fri Mar 01 04:00:00 EST 1996 · Physical Review. E, Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics

DOI:https://doi.org/10.1103/PhysRevE.53.2747· OSTI ID:279005

Fernandez, J C; Cobble, J A; Failor, B H; Hsing, W W; Rose, H A; Wilde, B H; Bradley, K S; Gobby, P L; Kirkwood, R; Kornblum, H N; Montgomery, D S; Wilke, M D ^[1]

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1. Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)

Stimulated Brillouin scattering has been studied in plasma conditions approaching those expected within laser-driven cavities (hohlraums) capable of driving a fusion capsule to ignition with x rays. These conditions are achieved using a gas-filled hohlraum design that was fielded at the Nova laser. As the intensity of an interaction beam (351 nm in wavelength) is increased above an onset value {ital I}{sub {ital c}}, the measured Brillouin backscatter into the lens rises sharply and saturates. {ital I}{sub {ital c}} decreases as the optic {ital f} number increases. The saturation level depends on the gas ion species. {copyright} {ital 1996 The American Physical Society.}

• OSTI ID: 279005
• Journal Information: Physical Review. E, Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics, Journal Name: Physical Review. E, Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics Journal Issue: 3 Vol. 53; ISSN 1063-651X; ISSN PLEEE8
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
BRILLOUIN EFFECT
CAVITY RESONATORS
IONIC COMPOSITION
LASER-RADIATION HEATING
PLASMA
PLASMA DIAGNOSTICS
SCATTERING
STIMULATED EMISSION
THERMONUCLEAR REACTIONS