Infrared photodissociation of cold CH3+-He2 complexes

A cryogenic 22-pole ion trap apparatus is used to probe weakly bound cold CH -He  complexes by IR action spectroscopy at 4 K. The infrared photodissociation spectrum of the antisymmetric C-H stretching vibration is recorded in the range of 3102-3139 cm −1 . A comparison between the experimental spec...

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Bibliographic Details
Published in:Molecular physics 2019-06, Vol.117 (9-12), p.1481-1485
Main Authors: Töpfer, Matthias, Schmid, Philipp C., Kohguchi, Hiroshi, Yamada, Koichi M. T., Schlemmer, Stephan, Asvany, Oskar
Format: Article
Language:English
Subjects:
cold chemistry
Infrared spectroscopy
ion trap
ion-helium complex
Photodissociation
Predissociation
Spectrum analysis
vibrational spectroscopy
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Summary:A cryogenic 22-pole ion trap apparatus is used to probe weakly bound cold CH -He  complexes by IR action spectroscopy at 4 K. The infrared photodissociation spectrum of the antisymmetric C-H stretching vibration is recorded in the range of 3102-3139 cm −1 . A comparison between the experimental spectrum and a symmetric rotor Hamiltonian indicates that this band is strongly perturbed, but we report here a preliminary set of spectroscopic parameters.
ISSN:0026-8976
1362-3028
DOI:10.1080/00268976.2018.1563727