Effect of excitation-autoionization processes on the line emission of Zn I-- and GaI--like rare-earth ions in hot coronal plasmas

Journal Article · Mon Oct 01 04:00:00 EDT 1990 · Physical Review, A; (USA)

DOI:https://doi.org/10.1103/PhysRevA.42.4412· OSTI ID:6311390

Mandelbaum, P; Finkenthal, M; Meroz, E; Schwob, J L ^[1]; Oreg, J; Goldstein, W H; Klapisch, M; Osterheld, L ^[2]; Bar Shalom, A ^[3]; Lippman, S ^[4]; Huang, L K; Moos, H W ^[5]

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1. Racah Institute of Physics, The Hebrew University, 91904 Jerusalem (Israel)
2. High Temperature Physics Division, Lawrence Livermore National Laboratory, Livermore, CA (USA)
3. University of California, Berkeley, CA (USA)
4. Department of Physics, Johns Hopkins University, Baltimore, MD (USA) General Atomics, San Diego, CA (USA)
5. Department of Physics, Johns Hopkins University, Baltimore, MD (USA)

A systematic variation in the line-intensity ratios of GaI-- and ZnI--like Pr ({ital Z}=59) to Dy ({ital Z}=66) ions has been observed in spectra emitted by atoms injected in a low-density high-temperature tokamak plasma. This variation is shown to be correlated with the progressive closing of the autoionizing channels through the excited 3{ital d}{sup 9}4{ital s}{sup 2}4{ital p}4{ital f} configuration in the GaI--like ionization state as {ital Z} increases.

• DOE Contract Number: FG02-86ER53214
• OSTI ID: 6311390
• Journal Information: Physical Review, A; (USA), Journal Name: Physical Review, A; (USA) Vol. 42:7; ISSN 1050-2947; ISSN PLRAA
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700102* -- Fusion Energy-- Plasma Research-- Diagnostics
ATOMS
AUTOIONIZATION
CHARGED PARTICLES
CLOSED PLASMA DEVICES
DYSPROSIUM
ELEMENTS
EMISSION SPECTRA
ENERGY-LEVEL TRANSITIONS
EXCITATION
IMPURITIES
IONIZATION
IONS
ISOELECTRONIC ATOMS
METALS
MULTICHARGED IONS
PRASEODYMIUM IONS
RARE EARTHS
SPECTRA
TEXT DEVICES
THERMONUCLEAR DEVICES
TOKAMAK DEVICES
X-RAY SPECTRA