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Proceedings Paper

UV/VUV radiometric calibrations at SURF II
Author(s): Mitchell L. Furst; L. Randall Canfield
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Paper Abstract

Since 1981 more than 150 instrument calibrations have been performed on the radiometric instrumentation calibration beamline at the Synchrotron Ultraviolet Radiation Facility (SURF II) at the National Institute of Standards and Technology (NIST) in Gaithersburg, Maryland. This 300 MeV electron storage ring operates routinely at electron currents greater than 250 mA. The spectrometer calibration beamline provides a continuum of radiation from 4 nm through the visual spectral region in the form of an intense beam with total angular divergence of 1.2 mrad. The probable uncertainty for the flux ranges from about 5 percent at 4 nm to less than 2 percent above 20 nm. The new system will radiometrically trace to SURF II, and thus is expected to reduce the calibration uncertainty for diodes in this region by a factor of five to the 1-2 percent level.

Paper Details

Date Published: 22 January 1993
PDF: 7 pages
Proc. SPIE 1764, Ultraviolet Technology IV, (22 January 1993); doi: 10.1117/12.140856
Show Author Affiliations
Mitchell L. Furst, National Institute of Standards and Technology (United States)
L. Randall Canfield, National Institute of Standards and Technology (United States)


Published in SPIE Proceedings Vol. 1764:
Ultraviolet Technology IV
Robert E. Huffman, Editor(s)

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