Opacity measurements in a hot dense medium

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...

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Bibliographic Details
Published in:Physical review letters 1991-12, Vol.67 (27), p.3784-3787
Main Authors: PERRY, T. S, DAVIDSON, S. J, ABDALLAH, J. JR, STEWART, R. E, KILKENNY, J. D, LEE, R. W, SERDUKE, F. J. D, BACH, D. R, SMITH, C. C, FOSTER, J. M, DOYAS, R. J, WARD, R. A, IGLESIAS, C. A, ROGERS, F. J
Format: Article
Language:English
Subjects:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700320 - Plasma Diagnostic Techniques & Instrumentation- (1992-)
700411 - Inertial Confinement Devices- (1992-)
ABSORPTION SPECTRA
ALUMINIUM
DIMENSIONS
ELEMENTS
EQUILIBRIUM
Exact sciences and technology
HEATING
HOT PLASMA
LASER-PRODUCED PLASMA
LASER-RADIATION HEATING
LAWRENCE LIVERMORE LABORATORY
METALS
NATIONAL ORGANIZATIONS
OPACITY
OPTICAL PROPERTIES
PHYSICAL PROPERTIES
Physics
Physics of gases, plasmas and electric discharges
Physics of plasmas and electric discharges
PLASMA
PLASMA DENSITY
PLASMA DIAGNOSTICS
PLASMA HEATING
SLABS
SPECTRA
TEMPERATURE MEASUREMENT
THERMODYNAMICS
THICKNESS
US AEC
US DOE
US ERDA
US ORGANIZATIONS
X-RAY SPECTRA
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Summary: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. (Author)
ISSN:0031-9007
1079-7114
DOI:10.1103/PhysRevLett.67.3784