Strategy and Enhanced Temperature Determination in a Laser Heated Diamond Anvil Cell

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Strategy and Enhanced Temperature Determination in a Laser Heated Diamond Anvil Cell

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Title: Strategy and Enhanced Temperature Determination in a Laser Heated Diamond Anvil Cell
Author: Deemyad, Shanti; Papathanassiou, Anthony N.; Silvera, Isaac F.

Note: Order does not necessarily reflect citation order of authors.

Citation: Deemyad, Shanti, Anthony N. Papathanassiou, and Isaac F. Silvera. 2009. Strategy and enhanced temperature determination in a laser heated diamond anvil cell. Journal of Applied Physics 105(9): 093543.
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Abstract: We show that a strategy for increased accuracy in temperature determination by optical pyrometry when the wavelength dependence of the emissivity is unknown is to measure the spectral irradiance at short wavelengths. We then introduce an improved method of determining the temperature in laser heated diamond anvil cells. In general a blackbody source is used to determine the optical transfer function required for determining the blackbody curve. By using the thermal radiation of a heated absorber at ambient pressure and known temperature, uncertainties in the temperature determination caused by the wavelength dependence of the emissivity of the heated absorber can be eliminated. Temperature determination reduces to a one-parameter fit to the blackbody curve rather than the usual two parameters (emissivity and temperature), leading to increased precision and accuracy.
Published Version: doi:10.1063/1.3117517
Terms of Use: This article is made available under the terms and conditions applicable to Open Access Policy Articles, as set forth at http://nrs.harvard.edu/urn-3:HUL.InstRepos:dash.current.terms-of-use#OAP
Citable link to this page: http://nrs.harvard.edu/urn-3:HUL.InstRepos:8944724
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