Universität zu Köln

Kohguchi, Hiroshi ORCID: 0000-0001-9684-1258, Jusko, Pavol, Yamada, Koichi M. T., Schlemmer, Stephan ORCID: 0000-0002-1421-7281 and Asvany, Oskar (2018). High-resolution infrared spectroscopy of O2H+ in a cryogenic ion trap. J. Chem. Phys., 148 (14). MELVILLE: AMER INST PHYSICS. ISSN 1089-7690

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Abstract

The protonated oxygen molecule, O2H+, and its helium complex, He-O2H+, have been investigated by vibrational action spectroscopy in a cryogenic 22-pole ion trap. For the He-O2H+ complex, the frequencies of three vibrational bands have been determined by predissociation spectroscopy. The elusive O2H+ has been characterized for the first time by high-resolution rovibrational spectroscopy via its nu(1) OH-stretching band. Thirty-eight rovibrational fine structure transitions with partly resolved hyperfine satellites were measured (56 resolved lines in total). Spectroscopic parameters were determined by fitting the observed lines with an effective Hamiltonian for an asymmetric rotor in a triplet electronic ground state, (X) over tilde (3)A '', yielding a band origin at 3016.73 cm(-1). Based on these spectroscopic parameters, the rotational spectrum is predicted, but not yet detected. Published by AIP Publishing.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Kohguchi, Hiroshi UNSPECIFIED orcid.org/0000-0001-9684-1258 UNSPECIFIED Jusko, Pavol UNSPECIFIED UNSPECIFIED UNSPECIFIED Yamada, Koichi M. T. UNSPECIFIED UNSPECIFIED UNSPECIFIED Schlemmer, Stephan UNSPECIFIED orcid.org/0000-0002-1421-7281 UNSPECIFIED Asvany, Oskar UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-189336
DOI:	10.1063/1.5023633
Journal or Publication Title:	J. Chem. Phys.
Volume:	148
Number:	14
Date:	2018
Publisher:	AMER INST PHYSICS
Place of Publication:	MELVILLE
ISSN:	1089-7690
Language:	English
Faculty:	Faculty of Mathematics and Natural Sciences
Divisions:	Faculty of Mathematics and Natural Sciences > Department of Physics > Institute of Physics I
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language FREQUENCY LASER SPECTROSCOPY; ROTATIONAL SPECTRUM; PREDISSOCIATION SPECTRA; GROUND-STATE; HO2; TRANSITION; HE; PREDICTION; ATOMS; NU(1) Multiple languages Chemistry, Physical; Physics, Atomic, Molecular & Chemical Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/18933