Computer Science
Scientific paper
Jun 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011mss..confefe04r&link_type=abstract
"International Symposium On Molecular Spectroscopy, 66th Meeting, Held 20-24 June, 2011 at Ohio State University. http://molspec
Computer Science
Matrix/Condensedphase
Scientific paper
Methanol is one of the simplest torsional oscillators, and has been extensively studied in the gas phase by various spectroscopic techniques. At 300 K, a large number of rotational, torsional, and vibrational energy levels are populated, and this makes for a rather complicated infrared spectrum which is still not fully understood. It is expected that in going from 300 K to 0.4 K (the temperature of helium nanodroplets) that the population distribution of methanol will collapse into one of two states; the J,K = 0,0 level for the A symmetry species, and the J,K = 1,-1 level for the E symmetry species. This results in a simplified spectrum that consists of narrow a-type lines and broader b-type lines in the OH stretching region. Microwave-infrared double resonance spectroscopy is used to help assign the a-type infrared lines.
Jäger Wolfgang
Raston Paul L.
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