Evidence for population inversions in Al and Mg by laser irradiation at 20-ps pulse lengths

Autor:	G. Charatis, D. Sullivan, J. R. Brundage, David C. Eder, Albert L. Osterheld, R. Shephard, N. D. Delamater, Christopher J. Keane, Robert A. Bosch, J. L. Thornburg, Dennis L Matthews, Gar. E. Busch, G. G. Ganger, H. A. Neal
Rok vydání:	1992
Předmět:	education.field_of_study Materials science Opacity business.industry Population Pulse duration Statistical and Nonlinear Physics Laser Population inversion Atomic and Molecular Physics and Optics Spectral line law.invention Ion Optics law Ionization Atomic physics business education
Zdroj:	Journal of the Optical Society of America B. 9:1278
ISSN:	1520-8540 0740-3224
DOI:	10.1364/josab.9.001278
Popis:	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 line-intensity distributions are observed.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::3f56b185268157666fd5a73503ff4ae1 https://doi.org/10.1364/josab.9.001278 Zobrazit plný text záznamu