Temperature dependence of the emissivity of platinum in the IR

被引:34
作者
Deemyad, Shanti [1 ]
Silvera, Isaac F. [1 ]
机构
[1] Harvard Univ, Lyman Lab Phys, Cambridge, MA 02138 USA
关键词
D O I
10.1063/1.2966394
中图分类号
TH7 [仪器、仪表];
学科分类号
0804 ; 080401 ; 081102 ;
摘要
The accuracy of temperature determination by fitting the spectral irradiance to a Planck curve depends on knowledge of the emissivity at all temperatures and pressures of interest within a spectral region. Here, the emissivity of platinum is measured in the near infrared as a function of temperature. In the wavelength range of study and the temperature range of 650-1100 K, we find the emissivity to be independent of temperature to within experimental error. This result should lead to improved accuracy of temperature measurement by optical pyrometry where platinum is used as a thermal emitter. (C) 2008 American Institute of Physics.
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页数:2
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