Abstract
For decades, the irradiation facility for beta radiation, the Beta Secondary Standard BSS 2 developed at PTB, has been in worldwide use to irradiate dosemeters, detectors and other devices with calibrated beta sources. In this work two energy-reduced radiation fields based on the 90Sr/90Y source are described. Their electron and photon particle spectra are made available as data files. In addition, angular distributions and the depth dose profiles are given. The spectra were determined using the Monte Carlo particle transport code EGSnrc/BEAMnrc and are provided in the supplementary data.
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