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 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.
Hoshina
Hiromichi
H
Department of Chemistry, University of Southern California, Los Angeles, 90089, USA.
Lucrezi
Jacob
J
Slipchenko
Mikhail N
MN
Kuyanov
Kirill E
KE
Vilesov
Andrey F
AF