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## Abstract Several correction factors for primary beta dosimetry in radiation protection have been determined by means of measurements and simulations for both the well-known Böhm primary standard extrapolation chamber developed at PTB (which has been commercially available for a long time) and a new primary standard extrapolation chamber also developed at PTB. The correction factors k ~el~ for electrostatic attraction of the entrance window due to the collecting voltage and k ~sat~ for ionisation collection losses due to ionic recombination have been measured. The following correction factors have been determined by simulations for normal (0°) as well as oblique (15°, 30°, 45° and 60°) radiation incidence: k ~ba~ for backscatter from the collecting electrode, k ~pe~ for perturbation by the chamber’s side walls, and k ~ra~, k ~ac~ and k ~di~ for inhomogeneity inside the collecting volume. The latter three have been combined to k ~ih~. Six more correction factors adopted from the literature are described to complete the necessary corrections. A comparison with values given in ISO 6980-2:2004 (for 0°), all determined at that time by means of measurements, is shown as well as the app

Who reads Correction Factors for Primary Beta Dosimetry?

Author

R Behrens

Publisher

Institute of Physics; IOP Publishing; Institute of Physics Publishing; Publons (ISSN 0026-1394)

Published

2020

Language

EN

Field

Engineering (Physical Sciences)