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Validation of a rotational coherent anti-Stokes Raman scattering model for N2O at temperatures from 295K to 796K

Bohlin, Alexis LU ; Kindeya, Alem; Nordström, Emil LU and Bengtsson, Per-Erik LU (2012) In Journal of Raman Spectroscopy 43(5). p.604-610
Abstract
Pure rotational coherent anti-Stokes Raman scattering (CARS) spectra of N2O was recorded in a series of temperature calibrated cell measurements in the region 295-796K. A theoretical rotational CARS code for N2O was implemented and temperature analysis was performed by fitting the modeled theoretical spectra to the experimental spectra. Excellent agreement between the experimental and modeled spectra was obtained and the thermometric accuracy for the measurements was evaluated to be better than 1%. Also, rotational N2 CARS spectra were recorded at the same measurement conditions and the temperature analysis performed on these spectra resulted in the same accuracy. The peak signal strength was found to be similar to 5 times stronger for N2O... (More)
Pure rotational coherent anti-Stokes Raman scattering (CARS) spectra of N2O was recorded in a series of temperature calibrated cell measurements in the region 295-796K. A theoretical rotational CARS code for N2O was implemented and temperature analysis was performed by fitting the modeled theoretical spectra to the experimental spectra. Excellent agreement between the experimental and modeled spectra was obtained and the thermometric accuracy for the measurements was evaluated to be better than 1%. Also, rotational N2 CARS spectra were recorded at the same measurement conditions and the temperature analysis performed on these spectra resulted in the same accuracy. The peak signal strength was found to be similar to 5 times stronger for N2O than for N2 at ambient temperature and pressure. The temperature precision was evaluated to a relative standard deviation of 2.0%-2.7% in the studied temperature range, about half of the values for N2, which is attributed to the larger number of spectral lines for N2O. Rotational N2O CARS thermometry show great potential, because of a high Raman cross-section and large number of populated rotational states at any temperature. Copyright (c) 2012 John Wiley & Sons, Ltd. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
pure rotational coherent anti-Stokes Raman scattering, nitrous oxide, laser spectroscopy, thermometry
in
Journal of Raman Spectroscopy
volume
43
issue
5
pages
604 - 610
publisher
John Wiley & Sons
external identifiers
  • wos:000304149900004
  • scopus:84861344666
ISSN
1097-4555
DOI
10.1002/jrs.3148
language
English
LU publication?
yes
id
99dab182-fa09-4afc-8f7d-e4d8371582ca (old id 2809514)
date added to LUP
2012-06-25 16:45:08
date last changed
2017-01-01 06:15:48
@article{99dab182-fa09-4afc-8f7d-e4d8371582ca,
  abstract     = {Pure rotational coherent anti-Stokes Raman scattering (CARS) spectra of N2O was recorded in a series of temperature calibrated cell measurements in the region 295-796K. A theoretical rotational CARS code for N2O was implemented and temperature analysis was performed by fitting the modeled theoretical spectra to the experimental spectra. Excellent agreement between the experimental and modeled spectra was obtained and the thermometric accuracy for the measurements was evaluated to be better than 1%. Also, rotational N2 CARS spectra were recorded at the same measurement conditions and the temperature analysis performed on these spectra resulted in the same accuracy. The peak signal strength was found to be similar to 5 times stronger for N2O than for N2 at ambient temperature and pressure. The temperature precision was evaluated to a relative standard deviation of 2.0%-2.7% in the studied temperature range, about half of the values for N2, which is attributed to the larger number of spectral lines for N2O. Rotational N2O CARS thermometry show great potential, because of a high Raman cross-section and large number of populated rotational states at any temperature. Copyright (c) 2012 John Wiley & Sons, Ltd.},
  author       = {Bohlin, Alexis and Kindeya, Alem and Nordström, Emil and Bengtsson, Per-Erik},
  issn         = {1097-4555},
  keyword      = {pure rotational coherent anti-Stokes Raman scattering,nitrous oxide,laser spectroscopy,thermometry},
  language     = {eng},
  number       = {5},
  pages        = {604--610},
  publisher    = {John Wiley & Sons},
  series       = {Journal of Raman Spectroscopy},
  title        = {Validation of a rotational coherent anti-Stokes Raman scattering model for N2O at temperatures from 295K to 796K},
  url          = {http://dx.doi.org/10.1002/jrs.3148},
  volume       = {43},
  year         = {2012},
}