Identification of new heliumlike Al XII transitions emitted by laser-produced plasmas

Journal Article · Wed Nov 01 00:00:00 EST 1989 · Journal of the Optical Society of America B: Optical Physics; (USA)

DOI:https://doi.org/10.1364/JOSAB.6.001972· OSTI ID:5201454

Goldsmith, S; Moreno, J C; Griem, H ^[1]; Cohen, L ^[2]; Knauer, J ^[3]

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1. Laboratory for Plasma and Fusion Energy Studies, University of Maryland, College Park, Maryland 20742-3511 (USA)
2. Laboratory for Astronomy and Solar Physics, Goddard Space Flight Center, Greenbelt, Maryland 20771 (USA)
3. Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623-1299 (USA)

New spectral lines of Al XII, emitted by aluminum laser-produced plasmas, have been identified in the extreme-ultraviolet region and their transitions classified. As many as eight beams of the Omega laser system of the Laboratory for Laser Energetics at the University of Rochester were linearly focused onto aluminum-coated flat targets to produce linear plasma radiation sources from 3 to 6 mm long. The spectra were photographed edge-on, using a grazing-incidence spectrograph. The new lines are classified as 2{ital s}--3{ital p}, 2{ital p}--3{ital d}, 2{ital p}--4{ital d}, 3{ital p}--4{ital d}, and 3{ital d}--4{ital f} transitions. Ionization differentiation is based on comparing the present data with aluminum spectra obtained with other sources under different ionization conditions, while line identification is based on comparison with calculated wavelengths and oscillator strengths.

• OSTI ID: 5201454
• Journal Information: Journal of the Optical Society of America B: Optical Physics; (USA), Vol. 6:11; ISSN 0740-3224
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
ALUMINIUM IONS
EXTREME ULTRAVIOLET SPECTRA
LASER-PRODUCED PLASMA
MULTICHARGED IONS
X-RAY LASERS
FEASIBILITY STUDIES
ATOMIC IONS
EMISSION SPECTRA
GAS LASERS
POPULATION INVERSION
RECOMBINATION
CHARGED PARTICLES
IONS
LASERS
PLASMA
SPECTRA
ULTRAVIOLET SPECTRA
426002* - Engineering- Lasers & Masers- (1990-)