This paper presents the results of a bilateral comparison of spectral irradiance responsivity scales of Helsinki University of Technology (TKK, Finland) and the National Institute of Standards and Technology (NIST, USA). The comparison was performed at UVA wavelengths by measuring the spectral irradiance responsivity of a broadband UVA detector at both laboratories. The results at the passband coincided within 1%, which is well within measurement uncertainties
Envall, J., Johnson, B.C., Kärhä, P., Larason, T. and Ikonen, E., 2005. Comparison of spectral irradiance responsivity scales of TKK and NIST in the UVA region. NEWRAD, pp.17-19.
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