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Proceedings Paper

New developments in photon metrology by use of BESSY synchrotron radiation
Author(s): B. Wende
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Paper Abstract

In the past, fundamental radiometry with primary radiator standards was based on the realization of Planck's radiation law by high temperature blackbody radiators, and was therefore restricted to the spectral regions of the ir, the visible, and the near air uv. Today, radiometry is developed in a broadly extended spectral region using synchrotron radiation calculable according to Schwinger. Spectral photon fluxes generated by the primary radiator standard BESSY have uncertainties from 0.6% in the x-ray region (photon energy 15 keV), down to 0.2% in the visible and near ir (photon energy 1 eV). Up to the end of this decade, PTB intends to realize radiometric units at least from 1 eV to 100 keV by use of BESSY I and II. Undulator radiator standards will entail further progress in radiometry of vacuum uv and soft x-ray radiation for photon energies <EQ 1 keV.

Paper Details

Date Published: 9 February 1993
PDF: 10 pages
Proc. SPIE 1712, 14th Symposium on Photonic Measurement, (9 February 1993); doi: 10.1117/12.140169
Show Author Affiliations
B. Wende, Physikalisch-Technische Bundesanstalt (Germany)


Published in SPIE Proceedings Vol. 1712:
14th Symposium on Photonic Measurement

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