Full aperture backscatter station imager diagnostics system for far-field imaging of laser plasma instabilities on Nova

Journal Article · Wed Jan 01 00:00:00 EST 1997 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.1147716· OSTI ID:451831

Wilke, M D; Fernandez, J C; Berggren, R R; Horton, R F; Montgomery, D S; Faulkner, J A; Looney, L D; Jimerson, J R ^[1]

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

In ICF, the understanding of laser plasma scattering processes is essential for laser target coupling and for controlling the symmetry of indirect drive implosions. The existing Nova full aperture backscatter station has been useful in understanding laser plasma instabilities occurring in hohlraums by measuring the quantity, spectral distribution, and near-field spatial distributions of Brillouin and more recently Raman backscatter. Equally important is an understanding of the far-field spatial intensity distribution which could help in understanding filamentation, threshold and saturation processes. This article describes a broadband, color-corrected far-field imager and associated diagnostics capable of imaging the source of scattered light to better than 25 {mu}m resolution. Brillouin and Raman backscatter can be imaged through the Nova beam-7 focusing lens or the imager can be used like a microscope to image side scatter from other beams. {copyright} {ital 1997 American Institute of Physics.}

• OSTI ID: 451831
• Report Number(s): CONF-960543-; ISSN 0034-6748; TRN: 97:006201
• Journal Information: Review of Scientific Instruments, Vol. 68, Issue 1; Conference: 11. annual high-temperature plasma diagnostics conference, Monterey, CA (United States), 12-16 May 1996; Other Information: PBD: Jan 1997
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION
PLASMA DIAGNOSTICS
MEASURING INSTRUMENTS
NOVA FACILITY
PLASMA MACROINSTABILITIES
PLASMA INSTABILITY
LASER TARGETS
INDIRECT DRIVE LASER IMPLOSION
BACKSCATTERING
RAMAN EFFECT
BRILLOUIN EFFECT
LIGHT SCATTERING
IMAGES
plasma inertial confinement
plasma production by laser
fusion reactor ignition
backscatter
CCD image sensors
microchannel plates