Advanced

High resolution polarization spectroscopy and laser induced fluorescence of CO2 around 2 mu m

Alwahabi, Z. T.; Zetterberg, Johan LU ; Li, Zhongshan LU and Aldén, Marcus LU (2007) In European Physical Journal D. Atomic, Molecular, Optical and Plasma Physics 42(1). p.41-47
Abstract
High resolution Infrared Polarisation Spectroscopy (IRPS) and Infrared Laser Induced Fluorescence (IRLIF) techniques were used to probe CO2/N-2 binary gas mixture at atmospheric pressure and ambient temperature. The probed CO2 molecules were prepared by laser excitation to an overtone and combination ro-vibrational state (12(0)1, J = 15) of CO2, centred at 4988.6612 cm(-1). IRPS and IRLIF line profiles were recorded for several CO2/N-2 binary mixtures. The observed IRLIF line shapes have the expected Lorentzian form while the observed IRPS line shapes are narrower by a factor of two than those recorded with the IRLIF and appear to have a Lorentzian-cubed profile. The recorded line profiles provide measurements of the pressure-broadening... (More)
High resolution Infrared Polarisation Spectroscopy (IRPS) and Infrared Laser Induced Fluorescence (IRLIF) techniques were used to probe CO2/N-2 binary gas mixture at atmospheric pressure and ambient temperature. The probed CO2 molecules were prepared by laser excitation to an overtone and combination ro-vibrational state (12(0)1, J = 15) of CO2, centred at 4988.6612 cm(-1). IRPS and IRLIF line profiles were recorded for several CO2/N-2 binary mixtures. The observed IRLIF line shapes have the expected Lorentzian form while the observed IRPS line shapes are narrower by a factor of two than those recorded with the IRLIF and appear to have a Lorentzian-cubed profile. The recorded line profiles provide measurements of the pressure-broadening coefficient directly at atmospheric pressure. The Full-Width-Half-Maxima (FWHM) pressure broadening coefficients are measured, based on IRLIF, to be 0.2174 0.0092 cm(-1) atm(-1) and 0.1327 +/- 0.0077 cm(-1) atm(-1) for self- and N-2 collision broadening, respectively. The broadening coefficients obtained based on IRPS were measured to be similar to 8% larger than those obtained with IRLIF. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
European Physical Journal D. Atomic, Molecular, Optical and Plasma Physics
volume
42
issue
1
pages
41 - 47
publisher
EDP Sciences
external identifiers
  • wos:000245788200005
  • scopus:33847688134
ISSN
1434-6060
DOI
10.1140/epjd/e2006-00275-y
language
English
LU publication?
yes
id
8f62dc63-4c29-437d-b4f8-9dfe0e6f824b (old id 666012)
date added to LUP
2007-12-04 18:31:16
date last changed
2017-03-26 04:22:56
@article{8f62dc63-4c29-437d-b4f8-9dfe0e6f824b,
  abstract     = {High resolution Infrared Polarisation Spectroscopy (IRPS) and Infrared Laser Induced Fluorescence (IRLIF) techniques were used to probe CO2/N-2 binary gas mixture at atmospheric pressure and ambient temperature. The probed CO2 molecules were prepared by laser excitation to an overtone and combination ro-vibrational state (12(0)1, J = 15) of CO2, centred at 4988.6612 cm(-1). IRPS and IRLIF line profiles were recorded for several CO2/N-2 binary mixtures. The observed IRLIF line shapes have the expected Lorentzian form while the observed IRPS line shapes are narrower by a factor of two than those recorded with the IRLIF and appear to have a Lorentzian-cubed profile. The recorded line profiles provide measurements of the pressure-broadening coefficient directly at atmospheric pressure. The Full-Width-Half-Maxima (FWHM) pressure broadening coefficients are measured, based on IRLIF, to be 0.2174 0.0092 cm(-1) atm(-1) and 0.1327 +/- 0.0077 cm(-1) atm(-1) for self- and N-2 collision broadening, respectively. The broadening coefficients obtained based on IRPS were measured to be similar to 8% larger than those obtained with IRLIF.},
  author       = {Alwahabi, Z. T. and Zetterberg, Johan and Li, Zhongshan and Aldén, Marcus},
  issn         = {1434-6060},
  language     = {eng},
  number       = {1},
  pages        = {41--47},
  publisher    = {EDP Sciences},
  series       = {European Physical Journal D. Atomic, Molecular, Optical and Plasma Physics},
  title        = {High resolution polarization spectroscopy and laser induced fluorescence of CO2 around 2 mu m},
  url          = {http://dx.doi.org/10.1140/epjd/e2006-00275-y},
  volume       = {42},
  year         = {2007},
}