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Titolo:
Measurement of the 3d -> 2p resonance to intercombination line-intensity ratio in neonlike Fe XVII, Ge XXIII, and Se XXV - art. no. 032705
Autore:
Beiersdorfer, P; von Goeler, S; Bitter, M; Thorn, DB;
Indirizzi:
Univ Calif Lawrence Livermore Natl Lab, Dept Phys & Adv Technol, Livermore, CA 94551 USA Univ Calif Lawrence Livermore Natl Lab Livermore CA USA 94551 A 94551 USA Princeton Plasma Phys Lab, Princeton, NJ 08543 USA Princeton Plasma Phys Lab Princeton NJ USA 08543 Princeton, NJ 08543 USA
Titolo Testata:
PHYSICAL REVIEW A
fascicolo: 3, volume: 6403, anno: 2001,
pagine: 2705 -
SICI:
1050-2947(200109)6403:3<2705:MOT3-2>2.0.ZU;2-6
Fonte:
ISI
Lingua:
ENG
Soggetto:
ALCATOR-C TOKAMAK; X-RAY-SPECTRA; OSCILLATOR-STRENGTHS; COLLISION STRENGTHS; ATOMIC DATA; SATELLITE SPECTRA; ACTIVE-REGION; KR-XXVII; IONS; HELIUMLIKE;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
--discip_EC--
Citazioni:
42
Recensione:
Indirizzi per estratti:
Indirizzo: Beiersdorfer, P Univ Calif Lawrence Livermore Natl Lab, Dept Phys & Adv Technol, Livermore, CA 94551 USA Univ Calif Lawrence Livermore Natl Lab Livermore CA USA 94551
Citazione:
P. Beiersdorfer et al., "Measurement of the 3d -> 2p resonance to intercombination line-intensity ratio in neonlike Fe XVII, Ge XXIII, and Se XXV - art. no. 032705", PHYS REV A, 6403(3), 2001, pp. 2705

Abstract

Measurements of the 3d --> 2p resonance and intercombination lines were made on the PLT tokamak for the neonlike ions Fe XVII, Ge XXIII, and Se XXV at several electron temperatures. The observed ratios agree with measurements of the ratios of the electron-impact excitation cross sections measured at the Livermore EBIT-II electron beam ion trap indicating that the effects of indirect excitation processes active in a plasma environment are minor for this line pair. However, the measured ratios are significantly smaller than theoretical predictions of their relative oscillator strengths or electron-impact excitation rates, illustrating the need to use laboratory measurements to calibrate this line pair at the level necessary for spectral diagnostics.

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Documento generato il 07/07/20 alle ore 19:15:57