High-resolution analysis of the ν3 band of radiocarbon methane 14CH4

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Larnimaa , S , Halonen , L , Karhu , J , Tomberg , T , Metsälä , M , Genoud , G , Hieta , T , Bell , S & Vainio , M 2020 , ' High-resolution analysis of the ν3 band of radiocarbon methane 14CH4 ' , Chemical Physics Letters , vol. 750 , 137488 , pp. 5 . https://doi.org/10.1016/j.cplett.2020.137488

Title: High-resolution analysis of the ν3 band of radiocarbon methane 14CH4
Author: Larnimaa, Santeri; Halonen, Lauri; Karhu, Juho; Tomberg, Teemu; Metsälä, Markus; Genoud, Guillaume; Hieta, Tuomas; Bell, Steven; Vainio, Markku
Contributor organization: University of Helsinki
Molecular Science
Department of Chemistry
Date: 2020-07
Language: eng
Number of pages: 5
Belongs to series: Chemical Physics Letters
ISSN: 0009-2614
DOI: https://doi.org/10.1016/j.cplett.2020.137488
URI: http://hdl.handle.net/10138/329142
Abstract: We present the first high-resolution measurements and rotational analysis of the fundamental asymmetric stretching vibrational band ν3(F2) of radiocarbon methane. A spectrometer consisting of a mid-infrared continuous-wave optical parametric oscillator and a cantilever-enhanced photoacoustic detector was employed to determine the wavenumbers of 43 rovibrational lines. A spectroscopic model could reproduce all the observed transition wavenumbers within the accuracy of the experiment. Our work contributes to the development of radiocarbon methane detectors based on laser spectroscopy.
Subject: C-14
DIOXIDE
High-resolution spectroscopy
Infrared spectroscopy
Laser spectroscopy
Molecular spectroscopy
ROTATION
Radiocarbon compounds
SPECTROSCOPY
116 Chemical sciences
Peer reviewed: Yes
Rights: cc_by_nc_nd
Usage restriction: openAccess
Self-archived version: acceptedVersion


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