Universität zu Köln

Töpfer, Matthias, Jensen, Anders, Nagamori, Keigo, Kohguchi, Hiroshi, Szidarovszky, Tamas, Csaszar, Attila G., Schlemmer, Stephan ORCID: 0000-0002-1421-7281 and Asvany, Oskar (2020). Spectroscopic signatures of HHe2+ and HHe3+. Phys. Chem. Chem. Phys., 22 (40). S. 22885 - 22889. CAMBRIDGE: ROYAL SOC CHEMISTRY. ISSN 1463-9084

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Abstract

Using two different action spectroscopic techniques, a high-resolution quantum cascade laser operating around 1300 cm(-1) and a cryogenic ion trap machine, the proton shuttle motion of the cations HHe2+ and HHe3+ has been probed at a nominal temperature of 4 K. For HHe3+, the loosely bound character of this complex allowed predissociation spectroscopy to be used, and the observed broad features point to a lifetime of a few ps in the vibrationally excited state. For He-H+-He, a fundamental linear molecule consisting of only three nuclei and four electrons, the method of laser-induced inhibition of complex growth (LIICG) enabled the measurement of three accurate rovibrational transitions, pinning down its molecular parameters for the first time.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Töpfer, Matthias toepfer@ph1.uni-koeln.de UNSPECIFIED UNSPECIFIED Jensen, Anders UNSPECIFIED UNSPECIFIED UNSPECIFIED Nagamori, Keigo UNSPECIFIED UNSPECIFIED UNSPECIFIED Kohguchi, Hiroshi UNSPECIFIED UNSPECIFIED UNSPECIFIED Szidarovszky, Tamas UNSPECIFIED UNSPECIFIED UNSPECIFIED Csaszar, Attila G. UNSPECIFIED UNSPECIFIED UNSPECIFIED Schlemmer, Stephan UNSPECIFIED orcid.org/0000-0002-1421-7281 UNSPECIFIED Asvany, Oskar UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-314198
DOI:	10.1039/d0cp04649c
Journal or Publication Title:	Phys. Chem. Chem. Phys.
Volume:	22
Number:	40
Page Range:	S. 22885 - 22889
Date:	2020
Publisher:	ROYAL SOC CHEMISTRY
Place of Publication:	CAMBRIDGE
ISSN:	1463-9084
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language SPECTRA; HYDROGEN; IONS; (HEH+)-HE-4; CLUSTERS; ATOMS; GAS Multiple languages Chemistry, Physical; Physics, Atomic, Molecular & Chemical Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/31419