Backscatter measurements for NIF ignition targets (invited)

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 scatte...

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Bibliographic Details
Published in:Review of scientific instruments 2010-10, Vol.81 (10), p.10D921-10D921-6
Main Authors: Moody, J. D., Datte, P., Krauter, K., Bond, E., Michel, P. A., Glenzer, S. H., Divol, L., Niemann, C., Suter, L., Meezan, N., MacGowan, B. J., Hibbard, R., London, R., Kilkenny, J., Wallace, R., Kline, J. L., Knittel, K., Frieders, G., Golick, B., Ross, G., Widmann, K., Jackson, J., Vernon, S., Clancy, T.
Format: Article
Language:English
Subjects:
ENGINEERING
MATERIALS SCIENCE
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Summary: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 ∼ 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.
ISSN:0034-6748
1089-7623
DOI:10.1063/1.3491035