Energy fraction measurements of stimulated Brillouin scattering and stimulated Raman scattering on Shenguang-Ⅲ prototype laser facility

li zhichao; zhang xiaoding; yang dong; zheng jian; liu shenye; ding yongkun; li sanwei; jiang xiaohua; wang zhebin; zhang huan

Volume 22 Issue 08

Jul. 2010

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Article Navigation > High Power Laser and Particle Beams > 2010 > 22(08): 0-

yan ning, zhang wei, chang jiafeng, et al. Propagation of Blob in boundary of HT-7 tokamak[J]. High Power Laser and Particle Beams, 2011, 23.

Citation:

li zhichao, zhang xiaoding, yang dong, et al. Energy fraction measurements of stimulated Brillouin scattering and stimulated Raman scattering on Shenguang-Ⅲ prototype laser facility[J]. High Power Laser and Particle Beams, 2010, 22.

yan ning, zhang wei, chang jiafeng, et al. Propagation of Blob in boundary of HT-7 tokamak[J]. High Power Laser and Particle Beams, 2011, 23.

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Energy fraction measurements of stimulated Brillouin scattering and stimulated Raman scattering on Shenguang-Ⅲ prototype laser facility

1.
Department of Modern Physics,University of Science and Technology of China,Hefei 230026,China;
2.
Research Center of Laser Fusion,CAEP,P.O.Box 919-986,Mianyang 621900,China

Publish Date: 2010-07-12

Abstract

Abstract

The measurement of the fraction of laser-entrance energy, which is carried out mainly through the measurement of scattering light, is very important in the measurement of coupling efficiency of the hohlraum. The angular distribution of scattering light is measured on the Shenguang-Ⅲ prototype laser facility using the PIN detector array. It is demonstrated that the nonlinear laser plasma interaction, in which the stimulated Raman scattering fraction is about 10% and the stimulated Brillouin scattering about 20%, is stronger than that on Shenguang-Ⅱ laser facility. The laser target coupling efficiency thus evaluated is taken into the formula which describes the radiation temperature scaling law. The calculated radiation temperature agrees well with the experimental Dante results, which ind
- laser plasma,
- stimulated brillouin scattering,
- stimulated raman scattering,
- energy coupling efficiency

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