Spectral-irradiance scale based on radiometric black-body temperature measurements

Abstract

A radiometric method to measure high temperatures of black bodies using broadband-filter detectors is presented. Results of temperature measurements using a linear pyrometer and filter detectors, respectively, are compared. The performance of the black-body source and the realization of an interim detector-based spectralirradiance scale are described and discussed. The new scale is compared with the results of the 1990 Comité Consultatif de Photométrie et Radiométrie intercomparison of spectral-irradiance measurements.

A systematic neutron reflectometry study on hydrogen absorption in thin Mg1-xAlx alloy films Special issue on Neutron Scattering in Canada.

“…With detector-based radiometric standards achieving very small uncertainties in the 0.01% range or below (see section IV), several NMIs now measure thermodynamic temperature by radiometric means, traceable to those detector-based standards, rather than using an ITS-90 derived source-based scale [38][39][40][41][42][43][44][45][46]. This practice also anticipates changes in thermometry, where the new mise-en-pratique for the definition of the kelvin (currently being prepared by the Consultative Committee for Thermometry (CCT))…”

Photometry, radiometry and ‘the candela’: evolution in the classical and quantum world

“…With detector-based radiometric standards achieving very small uncertainties in the 0.01% range or below (see section IV), several NMIs now measure thermodynamic temperature by radiometric means, traceable to those detector-based standards, rather than using an ITS-90 derived source-based scale [38][39][40][41][42][43][44][45][46].…”

Wideband filter radiometers for blackbody temperature measurements

“…Several laboratories have developed filter radiometers for measuring the blackbody temperature [1][2][3][4]. Filter radiometers are also used to realize a spectral irradiance scale using incandescent lamps directly [13][14][15][16][17], that is, without the use of blackbodies.…”

“…The temperature of the HTBB can be determined radiometrically using filter radiometers (FRs) to measure absolutely the output of the HTBB [1][2][3][4]. The design of the FRs used in this investigation was chosen to avoid some of the long-term stability, spatial response uniformity and temperature control problems encountered in other filter radiometers and to allow experimental investigation into some of the measurement uncertainties.…”