ANOMALOUS REFLECTION FROM A LASER PRODUCED PLASMA AT LAMBDA = 0.53 MM IN THE NANOSECOND REGIME
The report describes the behaviour of the reflection from a solid target irradiated at moderate intensity with nanosecond pulses at lambda = 0.53 mum. The spectral and spatial properties of the scattered light (which amounts to 5-10% at 10 1-4 W/cm**2) are consistent with its interpretation in terms of stimulated Brillouin scattering, but a comparison with the theory shows that the instability occurs at much lower intensities than expected. The possibility that the discrepancy may be due to filamentation of the impinging beam is discussed. A recently proposed modified picture of the scattering process which could also account for the low threshold observed is considered.
Bibliographic Reference: ZEITSCHRIFT FUER PHYSIK B + CONDENSED MATTER VOL. 62 (1985), PP. 51-62.
Record Number: 1989124088500 / Last updated on: 1987-01-01
Available languages: en