Abstract
In the course of conducting laser-target interaction experiments at 20-ps pulse length using Al and Mg targets, to determine the ionization balance of these elements, time-resolved K-shell spectral line strengths were obtained, suggesting population inversions between excited levels in both He-like and H-like ions. Effects of resonance-line opacities need to be analyzed in more detail, but opacity effects alone do not account for the anomalous line-intensity ratios that are observed to persist 200–300 ps after the laser pulse. Comparisons with 50-ps and 100-ps pulse shots do not show evidence of inversion, although nonequilibrium spectral lineintensity distributions are observed.
Original language | English (US) |
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Pages (from-to) | 1278-1282 |
Number of pages | 5 |
Journal | Journal of the Optical Society of America B: Optical Physics |
Volume | 9 |
Issue number | 8 |
DOIs | |
State | Published - 1992 |
Externally published | Yes |
ASJC Scopus subject areas
- Statistical and Nonlinear Physics
- Atomic and Molecular Physics, and Optics