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Proceedings Paper

Analysis of neon soft x-ray spectra from short-pulse laser-produced plasmas
Author(s): Amber C. Abare; Christopher J. Keane; John K. Crane; Luiz Barroca Da Silva; Richard W. Lee; Michael D. Perry; Roger W. Falcone
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Paper Abstract

We report preliminary results from the analysis of streaked soft x-ray neon spectra obtained from the interaction of a picosecond Nd:glass laser with a gas jet target. In these experiments streaked spectra show prompt harmonic emission followed by longer time duration soft x-ray line emission. The majority of the line emission observed was found to originate from Li- and Be-like Ne and the major transitions in the observed spectra have been identified. Li-like emission lines were observed to decay faster in time than Be-like transitions, suggesting that recombination is taking place. Line ratios of n equals 4 - 2 and n equals 3 - 2 transitions supported the view that these lines were optically thin and thick, respectively. The time history of Li-like Ne 2p-4d and 2p-3d lines is in good agreement with a simple adiabatic expansion model coupled to a time dependent collisional-radiative code. Further x-ray spectroscopic analysis is underway which is aimed at diagnosing plasma conditions and assessing the potential of this recombining neon plasma as a quasi-steady-state recombination x-ray laser medium.

Paper Details

Date Published: 8 July 1993
PDF: 11 pages
Proc. SPIE 1860, Short-Pulse High-Intensity Lasers and Applications II, (8 July 1993); doi: 10.1117/12.147576
Show Author Affiliations
Amber C. Abare, Univ. of Florida (United States)
Christopher J. Keane, Lawrence Livermore National Lab. (United States)
John K. Crane, Lawrence Livermore National Lab. (United States)
Luiz Barroca Da Silva, Lawrence Livermore National Lab. (United States)
Richard W. Lee, Lawrence Livermore National Lab. (United States)
Michael D. Perry, Lawrence Livermore National Lab. (United States)
Roger W. Falcone, Univ. of California/Berkeley (United States)

Published in SPIE Proceedings Vol. 1860:
Short-Pulse High-Intensity Lasers and Applications II
Hector A. Baldis, Editor(s)

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