Universität zu Köln

Asvany, Oskar, Bruenken, Sandra, Kluge, Lars and Schlemmer, Stephan ORCID: 0000-0002-1421-7281 (2014). COLTRAP: a 22-pole ion trapping machine for spectroscopy at 4 K. Appl. Phys. B-Lasers Opt., 114 (1-2). S. 203 - 212. HEIDELBERG: SPRINGER HEIDELBERG. ISSN 1432-0649

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Abstract

Two similar 4 K 22-pole trapping machines have been recently completed in our laboratory. As a first experimental test in one of them, CH5+ and H3O+ ions have been trapped in the presence of helium gas at 3.8 K and the kinetics and temperature dependence of He tagging investigated. A first shell closure with 5 and (3 + 2) attached He atoms, respectively, is observed for both species. Applying IR radiation in the 3 mu m region, helium attachment to CH5+ is hindered by exciting CH-stretches of CH5+ prior to attachment. The resulting spectroscopic signal shows that the kinetic temperature of the stored CH5+ ensemble is below 12 K.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Asvany, Oskar UNSPECIFIED UNSPECIFIED UNSPECIFIED Bruenken, Sandra UNSPECIFIED UNSPECIFIED UNSPECIFIED Kluge, Lars UNSPECIFIED UNSPECIFIED UNSPECIFIED Schlemmer, Stephan UNSPECIFIED orcid.org/0000-0002-1421-7281 UNSPECIFIED
URN:	urn:nbn:de:hbz:38-450610
DOI:	10.1007/s00340-013-5684-y
Journal or Publication Title:	Appl. Phys. B-Lasers Opt.
Volume:	114
Number:	1-2
Page Range:	S. 203 - 212
Date:	2014
Publisher:	SPRINGER HEIDELBERG
Place of Publication:	HEIDELBERG
ISSN:	1432-0649
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language HIGH-RESOLUTION SPECTROSCOPY; INFRARED-SPECTRUM; COLD; GAS; PEPTIDE; GUIDES; CH5+ Multiple languages Optics; Physics, Applied Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/45061