X-ray laser gain measurements in a collisionally excited germanium plasma

Journal Article · Tue Oct 01 00:00:00 EDT 1991 · Journal of the Optical Society of America, Part B: Optical Physics; (United States)

DOI:https://doi.org/10.1364/JOSAB.8.002047· OSTI ID:5154159

Enright, G D; Villeneuve, D M; Dunn, J; Baldis, H A ^[1]; Kieffer, J C; Pepin, H; Chaker, M ^[2]; Herman, P R ^[3]

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1. National Research Council of Canada, Ottawa, Ontario K1A 0R6 (Canada)
2. INRS-Energie, C. P. 1020, Varennes, Quebec J3X 1S2 (Canada)
3. University of Toronto, Toronto, Ontario M5S 1A7 (Canada)

We have used a novel beam-averaging technique that makes use of a segmented wedge array (SWA) to overlap several line foci and to produce a much more uniform linear plasma than has been obtained to date. With this focusing arrangement, laser gain was observed for the first time to our knowledge on a 2s2{ital p}{sup 63}d--2{ital s}2p{sup 63}{ital p}, {ital J}=2--1 Ne-like transition at 198.99 A. The experiments were carried out on the LP2 Nd:glass laser system operating at 1.06 {mu}m with incident energies of {similar to}125 {ital J}/cm of line focus. We also observed gain on five 3{ital p}--3{ital s} transitions, using both the SWA and crossed cylindrical lenses to produce the line focus.

• OSTI ID: 5154159
• Journal Information: Journal of the Optical Society of America, Part B: Optical Physics; (United States), Vol. 8:10; ISSN 0740-3224
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
GERMANIUM IONS
X-RAY SPECTRA
X-RAY LASERS
GAIN
COLLISIONAL PLASMA
EMISSION SPECTRA
ENERGY-LEVEL TRANSITIONS
INNER-SHELL EXCITATION
L SHELL
MULTICHARGED IONS
AMPLIFICATION
CHARGED PARTICLES
ELECTRONIC STRUCTURE
EXCITATION
IONS
LASERS
PLASMA
SPECTRA
426002* - Engineering- Lasers & Masers- (1990-)
700102 - Fusion Energy- Plasma Research- Diagnostics