Comparison of the NBS SURF and tungsten ultraviolet irradiance standards

Abstract

Detailed comparisons of the spectral irradiance of the NBS Synchrotron Ultraviolet Radiation Facility II and tungsten FEL Scale of Spectral Irradiance at 297 and 254 nm with an uncertainty of ~1% show that these irradiance standards are consistent at both wavelengths to within the uncertainties assigned to them by NBS.