Measurements of Brillouin-Backscatter Dependence on Density-Scale Lengths near Critical Density
1980; American Physical Society; Volume: 44; Issue: 6 Linguagem: Inglês
10.1103/physrevlett.44.400
ISSN1092-0145
Autores Tópico(s)High-pressure geophysics and materials
ResumoThe Brillouin backscatter fraction was measured from laser-produced spherical plasmas with prepared scale lengths of from 5 to 50 \ensuremath{\mu}m. The scale lengths in the region of $0.1<~\frac{n}{{n}_{c}}<~1$ were measured using double-pulse holographic interferometry. The backscatter energy was found to vary from 5% to 25% of the incident energy over the range of scale lengths measured. The spectra of the backscatter light were obtained and show the red shifts characteristic of Brillouin scattering.
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