Experimental observation of the ν2+4ν3 bands of HD16O and HD18O between 14975 and 15275 cm−1

Chandran, Satheesh; Dixneuf, Sophie; Orphal, Johannes J.; Ruth, Albert A.

Experimental observation of the ν2+4ν3 bands of HD16O and HD18O between 14975 and 15275 cm−1

dc.contributor.author	Chandran, Satheesh
dc.contributor.author	Dixneuf, Sophie
dc.contributor.author	Orphal, Johannes J.
dc.contributor.author	Ruth, Albert A.
dc.contributor.funder	Irish Research Council for Science, Engineering and Technology	en
dc.contributor.funder	Seventh Framework Programme	en
dc.contributor.funder	FP7 People: Marie-Curie Actions	en
dc.contributor.funder	Horizon 2020	en
dc.date.accessioned	2020-12-10T15:53:48Z
dc.date.available	2020-12-10T15:53:48Z
dc.date.issued	2020-11-21
dc.date.updated	2020-12-10T15:45:11Z
dc.description.abstract	The ν2+4ν3 combination bands of HD16O and HD18O were measured using Fourier transform-incoherent broadband cavity-enhanced absorption spectroscopy (FT-IBBCEAS) with a spectral resolution of 0.08 cm−1. The ro-vibrational lines of these bands were assigned through comparison with ab-initio molecular lines from the Tomsk variational calculation database (http://spectra.iao.ru/). For HD18O and HD16O in total 114 and 141 strong lines were assigned in the region between 14975.3 cm−1 and 15243.3 cm−1 and between 14998.5 cm−1 and 15274.7 cm−1, respectively. While the very satisfactory agreement of line intensities was used for line assignments, a systematic average discrepancy of ~0.305 cm−1 in line positions was identified between the measured lines of HD18O and the theoretically predicted lines from the Tomsk database. Similarly for HD16O, an approximate wavenumber difference of ~0.361 cm−1 was observed. The wavenumber accuracy of the Fourier transform cavity enhanced absorption spectrometer was confirmed on basis of concurrently measured H216O spectra in the region between 15254.2 cm−1 and 15376.9 cm−1 and corroborated the systematic shifts of the ab initio data. A few lines of the ν1+4ν2+2ν3 bands of HD16O and HD18O were also identified. The data are compared and discussed on basis of existing literature data.	en
dc.description.sponsorship	Irish Research Council for Science Research and Technology (IRCSET) and the FP7 Marie Curie INSPIRE programme (International Mobility Fellowships in Science, Engineering and Technology 2010)	en
dc.description.status	Peer reviewed	en
dc.description.version	Published Version	en
dc.format.mimetype	application/pdf	en
dc.identifier.articleid	111395	en
dc.identifier.citation	Chandran, S., Dixneuf, S., Orphal, J. and Ruth, A. A. (2021) 'Experimental observation of the ν2+4ν3 bands of HD16O and HD18O between 14975 and 15275 cm−1', Journal of Molecular Spectroscopy, 375, 111395 (11 pp). doi: 10.1016/j.jms.2020.111395	en
dc.identifier.doi	10.1016/j.jms.2020.111395	en
dc.identifier.endpage	11	en
dc.identifier.issn	0022-2852
dc.identifier.journaltitle	Journal of Molecular Spectroscopy	en
dc.identifier.startpage	1	en
dc.identifier.uri	https://hdl.handle.net/10468/10830
dc.identifier.volume	375	en
dc.language.iso	en	en
dc.publisher	Elsevier	en
dc.relation.project	info:eu-repo/grantAgreement/EC/H2020::RIA/730997/EU/Integration of European Simulation Chambers for Investigating Atmospheric Processes – Towards 2020 and beyond/EUROCHAMP-2020	en
dc.relation.uri	http://www.sciencedirect.com/science/article/pii/S0022285220301636
dc.rights	© 2020 The Authors. Published by Elsevier Inc. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/)	en
dc.rights.uri	http://creativecommons.org/licenses/by/4.0/	en
dc.subject	Water isotopologues	en
dc.subject	Overtone combination bands	en
dc.subject	Near infra-red	en
dc.subject	HDO	en
dc.subject	Fourier transform-incoherent broadband cavity enhanced absorption spectroscopy (FT-IBBCEAS)	en
dc.subject	Trace gas sensing.	en
dc.title	Experimental observation of the ν2+4ν3 bands of HD16O and HD18O between 14975 and 15275 cm−1	en
dc.type	Article (peer-reviewed)	en