Opacity measurements in a hot dense medium

Details Opacity measurements in a hot dense medium Opacity measurements in a hot dense medium

Dec 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991phrvl..67.3784p&link_type=abstract

Physical Review Letters (ISSN 0031-9007), vol. 67, Dec. 30, 1991, p. 3784-3787. Research supported by SDIO and DNA.

Physics

Atomic Physics

135

Dense Plasmas, High Temperature Plasmas, Laser Plasmas, Opacity, Optical Measurement, Absorption Spectra, Laser Heating, Laser Target Interactions, Local Thermodynamic Equilibrium, Metal Foils, Plasma Slabs, X Ray Lasers

Scientific paper

The first measurements of the opacity in a well characterized, hot, dense, laser-produced plasma are reported. Measurements of the absorption of X-rays by 1 to 2 transitions in AlXII through AlVIII have been made in a laser-heated slab plasma at the measured temperature and density of 58 +/-4 eV and 0.020 +/-0.007 g/cu cm. The conditions in the plasma were determined to be reproducible, spatially uniform, and in nearly complete local thermodynamic equilibrium. The absorption spectra and the temperature-density data obtained provide an improved means for comparison with detailed atomic physics and opacity calculations.

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