Reliability of temperature determination from curve-fitting in multi-wavelength pyrometery
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Published:2013-06
Issue:2
Volume:31
Page:333-336
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ISSN:0263-0346
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Container-title:Laser and Particle Beams
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language:en
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Short-container-title:Laser Part. Beams
Author:
Ni P.A.,More R.M.,Bieniosek F.M.
Abstract
AbstractThis paper examines the reliability of a widely used method for temperature determination by multi-wavelength pyrometry. In recent warm dense matter experiments with ion-beam heated metal foils, we found that the statistical quality of the fit to the measured data is not necessarily a measure of the accuracy of the inferred temperature. We found a specific example where a second-best fit leads to a more realistic temperature value. The physics issue is the wavelength-dependent emissivity of the hot surface. We discuss improvements of the multi-frequency pyrometry technique, which will give a more reliable determination of the temperature from emission data.
Publisher
Hindawi Limited
Subject
Electrical and Electronic Engineering,Condensed Matter Physics,Atomic and Molecular Physics, and Optics
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