Markus, Charles R., Thorwirth, Sven, Asvany, Oskar and Schlemmer, Stephan ORCID: 0000-0002-1421-7281
(2019).
High-resolution double resonance action spectroscopy in ion traps: vibrational and rotational fingerprints of CH2NH2+.
Phys. Chem. Chem. Phys., 21 (48).
S. 26406 - 26413.
CAMBRIDGE:
ROYAL SOC CHEMISTRY.
ISSN 1463-9084
Abstract
By applying various action spectroscopic techniques in a 4 K cryogenic ion trap instrument, protonated methanimine, CH2NH2+, has been investigated by high-resolution rovibrational and pure rotational spectroscopy for the first time. In total, 39 rovibrational transitions within the fundamental band of the nu(2) symmetric C-H stretch were measured around 3026 cm(-1), which were used to predict pure rotational transition frequencies of CH2NH2+ in the ground vibrational state. Based on these predictions, nine rotational transitions were observed between 109 and 283 GHz using a novel double resonance method, which significantly improved the sensitivity of the rotational measurements. This double resonance method consists of rotational excitation followed by vibrational excitation, which is finally detected as a dip in the number of CH2NH2+-He complexes formed in the 4 K He bath of the trap. The new measurements and the derived predictions of pure rotational transitions will enable the first radio-astronomical search for CH2NH2+.
Item Type: | Journal Article | ||||||||||||||||||||
Creators: |
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URN: | urn:nbn:de:hbz:38-123844 | ||||||||||||||||||||
DOI: | 10.1039/c9cp05487a | ||||||||||||||||||||
Journal or Publication Title: | Phys. Chem. Chem. Phys. | ||||||||||||||||||||
Volume: | 21 | ||||||||||||||||||||
Number: | 48 | ||||||||||||||||||||
Page Range: | S. 26406 - 26413 | ||||||||||||||||||||
Date: | 2019 | ||||||||||||||||||||
Publisher: | ROYAL SOC CHEMISTRY | ||||||||||||||||||||
Place of Publication: | CAMBRIDGE | ||||||||||||||||||||
ISSN: | 1463-9084 | ||||||||||||||||||||
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 | ||||||||||||||||||||
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Refereed: | Yes | ||||||||||||||||||||
URI: | http://kups.ub.uni-koeln.de/id/eprint/12384 |
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