Abstract
Laser-induced fluorescence (LIF) and polarization spectroscopy (PS) is used for OH-thermometry utilizing the off-diagonal A-X (1,0) band. Both techniques are used simultaneously in order to allow a comparison of the results. For deriving temperature information from the spectra, three methods are employed: (1) a contour fit method comparing experimental and calculated spectra, (2) spectral fitting of a single highly resolved spectral line and (3) a two-line intensity ratio approach. In general, both spectroscopic techniques gave similar results. The high-resolution approach (2) did not deliver reasonable results in our experiments. The most accurate but also most time consuming method was the contour fit (1). For future two-dimensional temperature measurements, the 2-line-method (3) was identified to be the method of choice. The present study contains, to the best of our knowledge, the first polarization spectroscopic study in the A-X (1,0) band of OH. Copyright (C) 2009 John Wiley Sons, Ltd.
Original language | English |
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Pages (from-to) | 828-835 |
Number of pages | 8 |
Journal | Journal of Raman Spectroscopy |
Volume | 40 |
Issue number | 7 |
Early online date | 27 Feb 2009 |
DOIs | |
Publication status | Published - 1 Jul 2009 |
Event | 7th European Conference on Nonlinear Optical Spectroscopy (ECNOS)/1st European Conference on CARS Microscopy, Igls - , Austria Duration: 25 May 2008 → 27 May 2008 |
Keywords
- polarization spectroscopy
- laser-induced fluorescence
- hydroxyl
- OH
- thermometry