Critical-Density Scale-Length Measurements in Laser-Produced Plasmas
- 25 August 1975
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 35 (8), 514-517
- https://doi.org/10.1103/physrevlett.35.514
Abstract
Inhomogeneity scale lengths between critical and quarter-critical densities have been obtained by photographing laser-produced plasmas in emitted light at twice and three-halves the laser frequency. The displacements of the harmonic-light images were measured on photographs taken from a position below spherical targets irradiated by four Nd: glass-laser beams. Over the range of 5 to 20 J absorbed (in 200 to 600 psec) by 70-100-μm-diam glass shells, this scale length increased linearly from 10 to 30 μm.Keywords
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