Analysis of high- n dielectronic Rydberg satellites in the spectra of Na -like Zn XX and Mg -like Zn XIX.
We have observed spectra from highly charged zinc ions in a variety of laser-produced plasmas. Spectral features that are Na - and Mg -like satellites to high- n Rydberg transitions in the Ne -like Zn XXI spectrum are analyzed and modeled. Identifications and analysis are made by comparison with highly accurate atomic structure calculations and steady state collisional-radiative models. Each observed Zn XX and Zn XIX feature comprises up to approximately 2 dozen individual transitions, these transitions are excited principally by dielectronic recombination through autoionizing levels in Na - and Mg -like Zn19+ and Zn18+. We find these satellites to be ubiquitous in laser-produced plasmas formed by lasers with pulse lengths that span four orders of magnitude, from 1 ps to approximately 10 ns. The diagnostic potential of these Rydberg satellite lines is demonstrated.
Fournier
K B
KB
Lawrence Livermore National Laboratory, P. O. Box 808, L-41, Livermore, California 94550, USA.
Faenov
A Ya
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Pikuz
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TA
Magunov
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Skobelev
I Yu
IY
Flora
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F
Bollanti
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Di Lazzaro
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P
Murra
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D
Belyaev
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Vinogradov
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Kyrilov
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Matafonov
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Francucci
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Martellucci
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Petrocelli
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