OH-thermometry using laser polarization spectroscopy and laser-induced fluorescence spectroscopy in the OH A-X (1,0) band

Summary, in English

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.

• Författare: J. Kiefer; A. Meyerhoefer; T. Seeger; A. Leipertz; Zhongshan Li; Marcus Aldén
• Avdelning/ar: Förbränningsfysik
• Publiceringsår: 2009
• Språk: Engelska
• Sidor: 828-835
• Publikation/Tidskrift/Serie: Journal Of Raman Spectroscopy
• Volym: 40
• Issue: 7
• Länkar: http://dx.doi.org/10.1002/jrs.2230
• Dokumenttyp: Konferensbidrag
• Förlag: John Wiley & Sons Inc.
• Ämne: Atom and Molecular Physics and Optics
• Nyckelord: thermometry; OH; hydroxyl; polarization spectroscopy; laser-induced fluorescence
• Conference name: 7th European Conference on Nonlinear Optical Spectroscopy (ECNOS)/1st European Conference on CARS Microscopy
• Conference date: 2008-05-25 - 2008-05-27
• Conference place: Igls, Austria
• Status: Published
• ISBN/ISSN/Övrigt: ISSN: 0377-0486