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Rotational CARS thermometry at high temperature (1800 K) and high pressure (0.1-1.55 MPa)

Vestin, Fredrik LU ; Afzelius, Mikael LU ; Berger, H; Chaussard, F; Saint-Loup, R and Bengtsson, Per-Erik LU (2007) In Journal of Raman Spectroscopy 38(8). p.963-968
Abstract
Dual-broadband rotational CARS (DB-RCARS) thermometry has been investigated at high temperature and high pressure. Single-shot measurements were performed at 1800 K, in air and nitrogen at pressures up to 1.55 MPa and in oxygen at pressures up to 0.5 MPa. For all conditions, the resonant signal contribution to the spectra clearly dominated over the non-resonant one, implying the high potential for DB-RCARS for temperature and concentration measurements also at the high temperatures and pressures used in the present investigation. The relative standard deviation was generally similar to 2% for single-shot data at pressures from 0.5 to 1.55 MPa. At the investigated temperature, 1800 K, rotational lines from thermally excited vibrational... (More)
Dual-broadband rotational CARS (DB-RCARS) thermometry has been investigated at high temperature and high pressure. Single-shot measurements were performed at 1800 K, in air and nitrogen at pressures up to 1.55 MPa and in oxygen at pressures up to 0.5 MPa. For all conditions, the resonant signal contribution to the spectra clearly dominated over the non-resonant one, implying the high potential for DB-RCARS for temperature and concentration measurements also at the high temperatures and pressures used in the present investigation. The relative standard deviation was generally similar to 2% for single-shot data at pressures from 0.5 to 1.55 MPa. At the investigated temperature, 1800 K, rotational lines from thermally excited vibrational states could be observed in the highly resolved experimental spectra. Using a previously developed weighting procedure applied to these lines, it was demonstrated that the temperature standard deviation could be lowered with as much as 30%. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
gas-phase thermometry, rotational CARS, combustion diagnostics
in
Journal of Raman Spectroscopy
volume
38
issue
8
pages
963 - 968
publisher
John Wiley & Sons
external identifiers
  • wos:000249042500003
  • scopus:34548172998
ISSN
1097-4555
DOI
10.1002/jrs.1779
language
English
LU publication?
yes
id
a19eac3f-2c90-4e65-8157-792aa8d4fd47 (old id 688904)
date added to LUP
2007-12-19 09:21:02
date last changed
2017-10-08 04:25:20
@article{a19eac3f-2c90-4e65-8157-792aa8d4fd47,
  abstract     = {Dual-broadband rotational CARS (DB-RCARS) thermometry has been investigated at high temperature and high pressure. Single-shot measurements were performed at 1800 K, in air and nitrogen at pressures up to 1.55 MPa and in oxygen at pressures up to 0.5 MPa. For all conditions, the resonant signal contribution to the spectra clearly dominated over the non-resonant one, implying the high potential for DB-RCARS for temperature and concentration measurements also at the high temperatures and pressures used in the present investigation. The relative standard deviation was generally similar to 2% for single-shot data at pressures from 0.5 to 1.55 MPa. At the investigated temperature, 1800 K, rotational lines from thermally excited vibrational states could be observed in the highly resolved experimental spectra. Using a previously developed weighting procedure applied to these lines, it was demonstrated that the temperature standard deviation could be lowered with as much as 30%.},
  author       = {Vestin, Fredrik and Afzelius, Mikael and Berger, H and Chaussard, F and Saint-Loup, R and Bengtsson, Per-Erik},
  issn         = {1097-4555},
  keyword      = {gas-phase thermometry,rotational CARS,combustion diagnostics},
  language     = {eng},
  number       = {8},
  pages        = {963--968},
  publisher    = {John Wiley & Sons},
  series       = {Journal of Raman Spectroscopy},
  title        = {Rotational CARS thermometry at high temperature (1800 K) and high pressure (0.1-1.55 MPa)},
  url          = {http://dx.doi.org/10.1002/jrs.1779},
  volume       = {38},
  year         = {2007},
}