Abstract
We experimentally evaluate and correct the non-equivalence between electrical
and radiative heating of solar irradiance absolute radiometer to compensate the
systematic error of radiant power measurement at ambient pressure. A relative
difference of the order of 0.08%-0.27% between electrical and radiative heating
sensitivities is shown, and the resulting non-equivalence correction factor is
calculated. The radiant power measurement equation is modified using the
non-equivalence correction factor, a systematic deviation of 0.19% of radiant power
measurement is hence eliminated.
© 2014 Chinese Optics Letters
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