EGSnrc calculation of activity calibration factors for the Vinten ionization chamber

DOI	Resolve DOI: https://doi.org/10.1016/j.apradiso.2017.10.010
Author	Search for: Townson, R.¹; Search for: Tessier, F.¹; Search for: Galea, R.¹
Name affiliation	National Research Council Canada. Measurement Science and Standards
Format	Text
Type	Article
Journal title	Applied Radiation and Isotopes
ISSN	0969-8043
Volume	134
Pages	100–104
Subject	ionization chambers; Monte Carlo simulation; EGSnrc
Abstract	The National Physical Laboratory Vinten 671 chamber was selected as a proving ground for a new radionuclide source model in the EGSnrc software. The computational Vinten model is validated against measurements of radionuclide artifacts whose activities were determined by absolute methods. The response of the Vinten chamber is first calculated as a function of gamma energy, but more strikingly, an explicit simulation of radionuclide decay was implemented and now permits the direct determination of a calibration factor, including additional effects due to all decay paths of the radionuclide. The Monte Carlo and experimental calibration factors are found to agree at the percent level, in absolute terms.
Publication date	2018-04
Publisher	Elsevier
Language	English
Peer reviewed	Yes
NPARC number	23003044
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Record identifier	2fad7ff1-960f-4dc4-a95b-a8ef1266747d
Record created	2018-04-17
Record modified	2018-04-17