Lafferty, W.
(2009),
Observation of the C2H2-N2O van der Waals Complex in the Overtone Range Using CW-CRDS, Chemical Physics Letters, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=901007
(Accessed October 20, 2025)
Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
Observation of the C2H2-N2O van der Waals Complex in the Overtone Range Using CW-CRDS
Published
Author(s)
Abstract
A slit nozzle supersonic expansion containing acetylene (0.246l/min) and nitrous oxide (0.355l/min) seeded into Ar (1.26l/min) is investigated using CW cavity ring down spectroscopy, in the 1.5 m range. The C2H2N2O van der Waals complex is observed around the 2CH acetylenic band. Despite strong perturbations, 117 b-type lines are assigned. Their combined fit with published microwave data leads to new upper state and improved lower state rotational constants. The Lorentzian width of the assigned line profiles sets the mean lifetime to 1.6 ns. The rotational temperature is estimated to be 15K from the comparison between observed and simulated spectra.Citation
Chemical Physics Letters
Volume
490
Pub Type
Journals
Download Paper
Keywords
C-H Overtone Region, Perturbation, Rotational Constant, Van der Waals Complex
Citation
Issues
If you have any questions about this publication or are having problems accessing it, please contact [email protected].
Created September 14, 2009, Updated February 19, 2017