Observations of stimulated Brillouin backscattering from a magnetically confined plasma
作者:
R. S. Massey,
Z. A. Pietrzyk,
D. W. Scudder,
期刊:
Physics of Fluids(00319171)
(AIP Available online 1978)
卷期:
Volume 21,
issue 3
页码: 396-403
ISSN:0031-9171
年代: 1978
DOI:10.1063/1.862238
出版商: AIP
数据来源: AIP
摘要:
Backscattered laser radiation has been observed from a CO2laser‐produced and heated underdense plasma in a steady solenoid magnetic field, and is attributed to the stimulated Brillouin scattering process. Spectral measurements and observations of the dependence of the backscattered intensity on laser power are presented to support this identification. Backscattered radiation, amounting to as much as 1% of the incident power, was found to be redshifted by 80–100 A˚, the shift expected for stimulated Brillouin scattering from a plasma at the measured temperatureTe=80±25 eV. Data are also presented on the dependence of backscattered power on the density and convergence angle of incoming radiation.
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