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Publication Citation: Metrologia

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Author(s): Uwe Arp; Zhigang Li; Ping-Shine Shaw; Mathias Richter; Roman Klein; Wolfgang Paustian; Reiner Thornagel;
Title: Metrologia
Published: July 08, 2011
Abstract: We report on a successful bilateral inter-comparison between the Physikalisch-Technische Bundesanstalt (PTB) and the National Institute of Standards and Technology (NIST). In both laboratories deuterium lamps were calibrated using the calculability of synchrotron radiation. However, the methods applied in both laboratories differed significantly. Whereas the calibrations at PTB were performed in vacuum and let to spectral radiant intensities, the measurements at NIST were done in air and resulted in spectral irradiances. Therefore, for this bilateral comparison did we not only prove the equivalence of the two measurement procedures, but also the validity of the conversion between the different spectro-radiometric quantities. This successful comparison reestablishes the usefulness of deuterium lamps as transfer standards in the ultraviolet spectral range.
Citation: Metrologia
Volume: 48
Issue: 5
Pages: pp. 261 - 267
Keywords: radiometry; ultraviolet; synchrotron radiation; spectral irradiance; spectral radiance; spectral radiant intensity
Research Areas: Optical Metrology, Synchrotron, Radiometry, UV Optical Metrology
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