The rotational spectrum of the X 2Σ+ state of the SrF radical using laser microwave optical double resonance

Peter J. Domaille, Timothy C. Steimle, David O. Harris

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36 Scopus citations


The pure rotational spectrum of the X 2Σ+ state of the gaseous SrF radical has been measured using microwave optical double resonance (MODR) techniques. The analysis fully confirms the recent dye laser excitation spectrum and rotational assignment of the B 2Σ+-X 2Σ+ system. Transitions were measured in both the v″ = 0 and v″ = 1 states to give values of Be″ = 0.250533 cm-1, αe″ = 1.546 × 10-3 cm-1 and γ″ (spin-rotation) = 2.49 × 10-3 cm-1. General qualitative features of MODR in 2Σ+ states are treated and suggested improvements for obtaining experimental hyperfine constants are discussed. The more precise ground state constants are merged with the B-X optical analysis to obtain a more accurate set of constants for both states.

Original languageEnglish (US)
Pages (from-to)146-155
Number of pages10
JournalJournal of molecular spectroscopy
Issue number1
StatePublished - Oct 1977


ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Spectroscopy
  • Physical and Theoretical Chemistry

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