Ionisation in thermal-energy collisions of a resonance-state atom with a ground-state atom. the role of quasimolecular term structure peculiarities

A. Z. Devdariani, A. L. Zagrebin, S. V. Kasyanenko, Yu N. Sebyakin, Yu A. Tolmachev

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

The inelastic collisions of He(1s2p 1P1) atoms with ground-state noble-gas atoms are studied using the kinetic plasma spectroscopy method. Quenching rate constants are found to be (25+or-5)*10 -10, (27+or-5)*10-10 and (32+or-5)*10 -10 cm3s-1 for Ar, Kr and Xe, respectively (T=600 K). A detailed theoretical interpretation taking the specific features of quasimolecular terms into account is developed. Good agreement between theory and experiment is obtained for He-Ar and He-Kr. Possible reasons for the discrepancy for the He-Xe system are discussed.

Original languageEnglish
Article number014
Pages (from-to)2447-2466
Number of pages20
JournalJournal of Physics B: Atomic and Molecular Physics
Volume20
Issue number11
DOIs
StatePublished - 1 Dec 1987

Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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