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Development of a Spatially Resolved Optical Technique to Measure Temperature using Two-Photon Absorption of Xenon

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Author(s)
Bednar, Natalie J.
Advisor(s)
Sanders, Scott T.
Date
2005
Subject(s)
University of Wisconsin--Madison. College of Engineering.; Thesis (M.S.)--University of Wisconsin--Madison, 2005.
Abstract
A new spatially resolved optical technique to measure temperature was developed using two-photon absorption of xenon. This experiment excited the 256 nm two-photon transition of xenon by focusing the excitation source into a test cell at room temperature. Two-photon absorption only occurs at the focus of a laser beam; therefore a point measurement technique was possible. The spatial resolution for this experiment was approximately 0.6 mm; however, this technique enables higher resolution depending on the focus of the laser beam. Two-photon absorbance versus xenon number density was determined experimentally and used to validate a theoretical model created in MATLAB. This technique was designed primarily for two non-reacting flows: the vortex tube and the pulse tube. A case study for measurement in a vortex tube was presented; however, applying this technique to a pulse tube will be similar.
Description
Under the supervision of Assistant Professor Scott T. Sanders, Pages: 95
Sponsor(s)
National Science Foundation under Grant No. CTS-0238633
Permanent link
http://digital.library.wisc.edu/1793/6514 
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