A molecular beam optical/Stark study of calcium monomethyl

A. J. Marr, F. Grieman, Timothy Steimle

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27 Scopus citations


Optical and optical Stark spectra of the 000 Ã2E-X̃2A1 band system of a supersonic molecular beam sample of calcium monomethyl, CaCH3, have been recorded. Field free spectroscopic parameters were obtained on fitting the (|KR′| = 1, |K′|=0 and 2)-(|KR″| = 1) and the (|KR′| = 0, |K′|=1)-(|KRPrime;| = 0) subbands. The branch features were reassigned and a resulting new set of spectroscopic parameters determined. The value of the a-principal axis component of the spin-rotation parameter, εaa2E), is now consistent with the assumed nature of the low-lying excited electronic states, Dipole moments of 2.62±0.03 D and 1.69±0.02 D were determined for the X̃2A1 and Ã2E states, respectively. A simple electrostatic model was adapted to predict dipole moments for CaCH3 and MgCH3.

Original languageEnglish (US)
Pages (from-to)3930-3937
Number of pages8
JournalJournal of Chemical Physics
Issue number10
StatePublished - Jan 1 1996

ASJC Scopus subject areas

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


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