Rotational study of carbon monoxide solvated with helium atoms

High resolution microwave and millimeter-wave spectra of HeN-CO clusters with N up to 10, produced in a molecular expansion, were observed. Two series of J = 1-0 transitions were detected, which correspond to the a-type and b-type J = 1-0 transitions of He1-CO. The B rotational constant initially de...

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Bibliographic Details
Published inPhysical review letters Vol. 101; no. 23; p. 233401
Main Authors Surin, L A, Potapov, A V, Dumesh, B S, Schlemmer, S, Xu, Y, Raston, P L, Jäger, W
Format Journal Article
LanguageEnglish
Published United States 05.12.2008
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Summary:High resolution microwave and millimeter-wave spectra of HeN-CO clusters with N up to 10, produced in a molecular expansion, were observed. Two series of J = 1-0 transitions were detected, which correspond to the a-type and b-type J = 1-0 transitions of He1-CO. The B rotational constant initially decreases with N and reaches a minimum at N = 3. Its subsequent rise indicates the transition from a molecular complex to a quantum solvated system already for N = 4. For N > or =6, the B value becomes larger than that of He1-CO, indicating an almost free rotation of CO within the helium environment.
ISSN:0031-9007
1079-7114
DOI:10.1103/PhysRevLett.101.233401