Universität zu Köln

Schmid, Philipp C., Asvany, Oskar, Salomon, Thomas, Thorwirth, Sven and Schlemmer, Stephan ORCID: 0000-0002-1421-7281 (2022). Leak-Out Spectroscopy, A Universal Method of Action Spectroscopy in Cold Ion Traps. J. Phys. Chem. A, 126 (43). S. 8111 - 8118. WASHINGTON: AMER CHEMICAL SOC. ISSN 1520-5215

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Abstract

A novel method of spectroscopy in ion traps termed leak-out spectroscopy (LOS) is presented. Here, mass-selected, cold ions are excited by an infrared laser. In a subsequent collision with a neutral buffer gas particle, their internal energy is then transferred to kinetic energy. As a result, these ions leak out from the ion trap and are detected. The LOS scheme is generally applicable, very sensitive, and close to background-free when operated at low temperature. The potential of this method is demonstrated and characterized here for the first time by recording the rotationally resolved spectrum of the C-H stretching vibration nu 1 of linear C3H+. Besides performing high-resolution spectroscopy, this method opens up the way for analyzing the composition of trap content, for example, determining isomer ratios, by selectively expelling isomers or other isobaric ions from the trap. Likewise, LOS can be used to prepare clean samples of structural and nuclear spin isomers.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Schmid, Philipp C. UNSPECIFIED UNSPECIFIED UNSPECIFIED Asvany, Oskar UNSPECIFIED UNSPECIFIED UNSPECIFIED Salomon, Thomas UNSPECIFIED UNSPECIFIED UNSPECIFIED Thorwirth, Sven UNSPECIFIED UNSPECIFIED UNSPECIFIED Schlemmer, Stephan UNSPECIFIED orcid.org/0000-0002-1421-7281 UNSPECIFIED
URN:	urn:nbn:de:hbz:38-658760
DOI:	10.1021/acs.jpca.2c05767
Journal or Publication Title:	J. Phys. Chem. A
Volume:	126
Number:	43
Page Range:	S. 8111 - 8118
Date:	2022
Publisher:	AMER CHEMICAL SOC
Place of Publication:	WASHINGTON
ISSN:	1520-5215
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language INFRARED-SPECTROSCOPY; SPECTRA Multiple languages Chemistry, Physical; Physics, Atomic, Molecular & Chemical Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/65876