Approximation of a melting plateau of large area HTFP cells used for spectral irradiance realization.
Appl Opt
; 60(7): 1827-1833, 2021 Mar 01.
Article
em En
| MEDLINE
| ID: mdl-33690270
ABSTRACT
This paper adopted an approximation of a melting plateau to solve the problem that temperature data cannot be monitored continuously when measuring the spectral irradiance of a large area tungsten carbide-carbon high-temperature fixed-point blackbody at each measured wavelength. Tests with fully measured curves showed that the method has a rather small deviation from the measured data of 0.017 K maximum, which corresponds to the spectral irradiance deviation of 0.005% at 500 nm. The maximum relative deviation between the Akima fitting method and the measured temperature in terms of spectral irradiance was 0.002%, which was better than -0.067% of a single temperature of 3020.11 K method and 0.026% of a linear interpolation method.
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01-internacional
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MEDLINE
Idioma:
En
Ano de publicação:
2021
Tipo de documento:
Article