Fine and magnetic hyperfine structure in the A2Π and X 2Σ+ states of yttrium monoxide

W. J. Childs, O. Poulsen, Timothy Steimle

Research output: Contribution to journalArticlepeer-review

47 Scopus citations


A molecular beam optical and rf-optical double resonance spectroscopic study of numerous vibrational components in the A2Π3/2- X2Σ+ subband of gas phase YO has been performed. The fine and magnetic hyperfine parameters for v=0-4 of the X2Σ + state have been determined. The observed strong vibrational dependence of the spin-rotation parameter γ(X2Σ +) is proposed to arise from a perturbation from two as yet unobserved low-lying 2Π states coming from a three open-shell configuration. The magnetic hyperfine parameters for the X2Σ + state can be interpreted in terms of a single unpaired electron model. An estimate for the A2Π excited state dipolar parameter has been established.

Original languageEnglish (US)
Pages (from-to)598-606
Number of pages9
JournalThe Journal of chemical physics
Issue number2
StatePublished - Jan 1 1988

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry


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