Linewidth modelling of C2H2-N-2 mixtures tested by rotational CARS measurements
(2006) In Journal of Raman Spectroscopy 37(6). p.647-654- Abstract
- The acetylene-nitrogen system is investigated in a combined theoretical and experimental effort in view of its thermometry applications. Accurate values of the rotational Raman linewidths of acetylene are of crucial importance for the computation of spectra from rotational coherent anti-Stokes Raman scattering (CARS) used for temperature and concentration evaluations. Since the direct measurements of these linewidths are not available, they are rigorously calculated by a semi-classical Robert-Bonamy formalism employing exact trajectories. The computed linewidths are used as input parameters in the theoretical spectra simulation, which is also improved by the inclusion of an interbranch interference with coherent Stokes Raman scattering... (More)
- The acetylene-nitrogen system is investigated in a combined theoretical and experimental effort in view of its thermometry applications. Accurate values of the rotational Raman linewidths of acetylene are of crucial importance for the computation of spectra from rotational coherent anti-Stokes Raman scattering (CARS) used for temperature and concentration evaluations. Since the direct measurements of these linewidths are not available, they are rigorously calculated by a semi-classical Robert-Bonamy formalism employing exact trajectories. The computed linewidths are used as input parameters in the theoretical spectra simulation, which is also improved by the inclusion of an interbranch interference with coherent Stokes Raman scattering (CSRS). These theoretical spectra are used to evaluate the temperature from experimental CARS spectra of acetylene-nitrogen mixtures recorded in the pressure range 0.1-0.6 MPa. The new linewidths (NLWs) and the CSRS interference inclusion result in a clear improvement of spectral fitting as well as in reasonable values of evaluated temperatures. Copyright (c) 2006 John Wiley & Sons, Ltd. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/404463
- author
- Buldyreva, J ; Bonamy, J ; Weikl, MC ; Beyrau, F ; Seeger, T ; Leipertz, A ; Vestin, Fredrik LU ; Afzelius, Mikael LU ; Bood, Joakim LU and Bengtsson, Per-Erik LU
- organization
- publishing date
- 2006
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- semi-classical computation, collisional linewidth, interbranch interference, evaluation, temperature, acetylene-nitrogen mixture, rotational CARS thermometry
- in
- Journal of Raman Spectroscopy
- volume
- 37
- issue
- 6
- pages
- 647 - 654
- publisher
- John Wiley & Sons Inc.
- external identifiers
-
- wos:000238717500005
- scopus:33745567556
- ISSN
- 1097-4555
- DOI
- 10.1002/jrs.1491
- language
- English
- LU publication?
- yes
- id
- 9dbfc843-d935-4e6d-8936-673d781fd559 (old id 404463)
- date added to LUP
- 2016-04-01 16:09:16
- date last changed
- 2022-03-30 05:54:13
@article{9dbfc843-d935-4e6d-8936-673d781fd559, abstract = {{The acetylene-nitrogen system is investigated in a combined theoretical and experimental effort in view of its thermometry applications. Accurate values of the rotational Raman linewidths of acetylene are of crucial importance for the computation of spectra from rotational coherent anti-Stokes Raman scattering (CARS) used for temperature and concentration evaluations. Since the direct measurements of these linewidths are not available, they are rigorously calculated by a semi-classical Robert-Bonamy formalism employing exact trajectories. The computed linewidths are used as input parameters in the theoretical spectra simulation, which is also improved by the inclusion of an interbranch interference with coherent Stokes Raman scattering (CSRS). These theoretical spectra are used to evaluate the temperature from experimental CARS spectra of acetylene-nitrogen mixtures recorded in the pressure range 0.1-0.6 MPa. The new linewidths (NLWs) and the CSRS interference inclusion result in a clear improvement of spectral fitting as well as in reasonable values of evaluated temperatures. Copyright (c) 2006 John Wiley & Sons, Ltd.}}, author = {{Buldyreva, J and Bonamy, J and Weikl, MC and Beyrau, F and Seeger, T and Leipertz, A and Vestin, Fredrik and Afzelius, Mikael and Bood, Joakim and Bengtsson, Per-Erik}}, issn = {{1097-4555}}, keywords = {{semi-classical computation; collisional linewidth; interbranch interference; evaluation; temperature; acetylene-nitrogen mixture; rotational CARS thermometry}}, language = {{eng}}, number = {{6}}, pages = {{647--654}}, publisher = {{John Wiley & Sons Inc.}}, series = {{Journal of Raman Spectroscopy}}, title = {{Linewidth modelling of C2H2-N-2 mixtures tested by rotational CARS measurements}}, url = {{http://dx.doi.org/10.1002/jrs.1491}}, doi = {{10.1002/jrs.1491}}, volume = {{37}}, year = {{2006}}, }