Backscatter measurements for NIF ignition targets (invited)

Journal Article · Fri Oct 15 00:00:00 EDT 2010 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.3491035· OSTI ID:22058702

Moody, J D; Datte, P; Krauter, K; Bond, E; Michel, P A; Glenzer, S H; Divol, L; Suter, L; Meezan, N; MacGowan, B J; Hibbard, R; London, R; Kilkenny, J; Wallace, R; Knittel, K; Frieders, G; Golick, B; Ross, G; Widmann, K; Jackson, J ^[1] ; others, and

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1. Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94550 (United States)

Backscattered light via laser-plasma instabilities has been measured in early NIF hohlraum experiments on two beam quads using a suite of detectors. A full aperture backscatter system and near backscatter imager (NBI) instrument separately measure the stimulated Brillouin and stimulated Raman scattered light. Both instruments work in conjunction to determine the total backscattered power to an accuracy of {approx}15%. In order to achieve the power accuracy we have added time-resolution to the NBI for the first time. This capability provides a temporally resolved spatial image of the backscatter which can be viewed as a movie.

• OSTI ID: 22058702
• Journal Information: Review of Scientific Instruments, Vol. 81, Issue 10; Other Information: (c) 2010 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0034-6748
• Country of Publication: United States
• Language: English

Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
ACCURACY
BACKSCATTERING
BEAMS
IGNITION
IMAGES
LASER-PRODUCED PLASMA
PLASMA INSTABILITY
RAMAN EFFECT
TIME RESOLUTION
US NATIONAL IGNITION FACILITY
VISIBLE RADIATION