Satellite band in the rovibrational spectrum of CO2 in helium droplets

Pulsed infrared (nu approximately 2350 cm(-1)) laser excitation spectra of CO2 molecules embedded in helium droplets are reported. The spectra exhibit a sharp R(0) rovibrational line accompanied by a weak broader (deltanu approximately 10 cm(-1)) satellite band, which is shifted by 14 cm(-1) towards...

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Bibliographic Details
Published in:Physical review letters 2005-05, Vol.94 (19), p.195301.1-195301.4
Main Authors: HOSHINA, Hiromichi, LUCREZI, Jacob, SLIPCHENKO, Mikhail N, KUYANOV, Kirill E, VILESOV, Andrey F
Format: Article
Language:English
Subjects:
Condensed matter: structure, mechanical and thermal properties
Exact sciences and technology
Other topics in quantum fluids and solids
liquid and solid helium
Physics
Quantum fluids and solids
liquid and solid helium
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Summary:Pulsed infrared (nu approximately 2350 cm(-1)) laser excitation spectra of CO2 molecules embedded in helium droplets are reported. The spectra exhibit a sharp R(0) rovibrational line accompanied by a weak broader (deltanu approximately 10 cm(-1)) satellite band, which is shifted by 14 cm(-1) towards higher frequencies. We assign this satellite band to a simultaneous rovibrational excitation of a molecule and its helium solvation shell. The results are rationalized within a model, which includes coupling of the rotational states of a molecule and a ring of He atoms.
ISSN:0031-9007
1079-7114
DOI:10.1103/PhysRevLett.94.195301