Energy-transfer processes in decaying neon-copper gaseous plasmas

Y. S. Cho, D. W. Ernie, H. J. Oskam

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Light-absorption and -emission spectroscopy were used in the studies of the time dependencies of the Cu II spectral emission, Ne I spectral emission, and Nem(P23) and Cu(4sS122) densities in the stationary afterglow of a sputtered Ne-Cu hollow cathode discharge. Transitions from 16 Cu II energy levels were monitored in the afterglow. The three Cu II levels between 21.16 and 21.41 eV are produced, either directly or by cascading, by charge exchange between Ne+ and Cu. The one Cu II level at 19.58 eV is predominantly produced by charge exchange between Ne2+ and Cu. The remaining Cu II levels are produced by both reactions. No evidence was found for the production of Cu II excited states by the Penning ionization of Cu by Nem(P23). A value of 220 8 cm2 sec-1 Torr was measured for the diffusion coefficient of Cu(4s S122) in neon.

Original languageEnglish (US)
Pages (from-to)1760-1765
Number of pages6
JournalPhysical Review A
Issue number4
StatePublished - Jan 1 1984

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