Applied Physics B

, Volume 70, Issue 1, pp 155–158

High-precision measurement of the temperature of methanol and ethanol droplets using spontaneous Raman scattering


  • T. Müller
    • Laser-Laboratorium Göttingen e.V., Hans-Adolf-Krebs-Weg 1, 37077 Göttingen, Germany
  • G. Grünefeld
    • Universität Bielefeld, Fakultät für Physik D3, Universitätsstr. 25, 33501 Bielefeld, Germany
  • V. Beushausen
    • Laser-Laboratorium Göttingen e.V., Hans-Adolf-Krebs-Weg 1, 37077 Göttingen, Germany
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DOI: 10.1007/s003400050024

Cite this article as:
Müller, T., Grünefeld, G. & Beushausen, V. Appl Phys B (2000) 70: 155. doi:10.1007/s003400050024


The temperature of liquid methanol and ethanol is demonstrated to be determined by a non-intrusive laser technique in sprays. The method is based on spontaneous Raman scattering, namely the shape and spectral position of the OH stretching band, which is temperature dependent. The accuracy achieved in this way is about ±2 °C. Thus, it could be applied to precise evaporation studies in sprays. Furthermore, it is demonstrated that this technique can be performed with moderate spectral resolution, although the spectral shape of a Raman line used for temperature determination. Hence, several other vibrational Raman lines can be recorded simultaneously along a line by using a spatially resolving optical multichannel analyzer. This yields the possibility to obtain additional spatially resolved information, e.g., air/fuel ratio, vapour/liquid mass fraction, or gas temperature, simultaneously.

PACS: 44.35.+c; 83.10.Lk; 42.62.Fi

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© Springer-Verlag 2000