Journal
HIGH ENERGY DENSITY PHYSICS
Volume 3, Issue 1-2, Pages 175-180Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.hedp.2007.02.035
Keywords
Ultra-short laser; Dense plasma; X-ray absorption
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Funding
- NSERC
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Point-projection K-shell absorption spectroscopy has been used to measure absorption spectra of transient aluminum plasma created by an ultra-short laser pulse. The 1s-2p and 1s-3p absorption lines of weakly ionized aluminum were measured for an extended range of densities in a low-temperature regime. Independent plasma characterization was obtained using frequency domain interferometry diagnostic (FDI) that allows the interpretation of the absorption spectra in terms of spectral opacities. A detailed opacity code using the density and temperature inferred from the FDI reproduce the measured absorption spectra except in the last stage of the recombination phase. (C) 2007 Elsevier B.V. All rights reserved.
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