Population Depletion Spectroscopy of Strontium Monomethoxide

Details Population Depletion Spectroscopy of Strontium Monomethoxide Population Depletion Spectroscopy of Strontium Monomethoxide

Jun 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009mss..conferf11f&link_type=abstract

"International Symposium On Molecular Spectroscopy, 64th Meeting, Held 22-26 June, 2009 at Ohio State University. http://molspec

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High resolution laser induced fluorescence excitation spectra have been obtained of the origin bands of the A ^2E ← X ^{2}A_{1} and B ^{2}A_{1} ← X ^{2}A_{1} transitions for two isotopologues, SrO^{12}CH{_3} and SrO^{13}CH{_3}, of strontium monomethoxide. The molecules were produced by laser ablation of a strontium target rod followed by reaction with ^{12}C - or ^{13}C - substituted methanol seeded in helium, prior to expansion into vacuum to form a pulsed supersonic jet. The spectra were complex and more congested than those we previously reported for the isoelectronic calcium monomethoxide molecule. Rotational J assignments were established from common ground state combination differences. Definitive assignments of the K structure and of the F_{1} F_{2} spin rotation components of the B ^{2}A_{1} state were, however, much harder to establish and could only be achieved using optical optical double resonance (OODR) population depletion spectroscopy. We will report the latest results and analysis and also show how, by employing OODR, we were able to resolve and quantify the very small spin rotation splitting in the ground X ^{2}A_{1} state.

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