Review of nuclear data for naturally occurring radionuclides applied to environmental applications

Cresswell, A. J. , Sanderson, D. C.W. and Carter, J. (2019) Review of nuclear data for naturally occurring radionuclides applied to environmental applications. European Physical Journal Plus, 134(2), 69. (doi: 10.1140/epjp/i2019-12437-1)

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Accurate nuclear data, commonly using evaluated libraries, is essential in many applications, allowing confidence in derived parameters. An approach to assess the confidence with which these data can be used is proposed, not previously reported, comparing nuclear data presented by different evaluations. Variations between evaluations are used as an indication of potential inaccuracies in the nuclear data or evaluation procedure, and the relevant primary literature reviewed more fully. Applying this approach to naturally occurring radionuclides has identified eight radionuclides where the evaluations differ significantly. Where recommended data are supported by a single set of high precision measurements, independent verification of those measurements will increase confidence in the accuracy of the data (214Bi and 214Pb). Further measurements should be conducted where the decay schemes are incomplete ( 228Ac and 228Ra). For 40K, the mean beta energy in all the evaluations has been calculated using an incorrect shape factor, and log ft and branching ratios have been calculated using an inappropriate program. Precise measurements of beta spectra will allow the use of experimentally derived shape factors for the calculation of mean beta energies (40K and 210Bi). Parameters used for infinite matrix dose rate and geothermal heat production calculations have been derived for the data discussed here.

Item Type:Articles
Glasgow Author(s) Enlighten ID:Sanderson, Professor David and Cresswell, Dr Alan and Carter, John
Authors: Cresswell, A. J., Sanderson, D. C.W., and Carter, J.
Subjects:G Geography. Anthropology. Recreation > GE Environmental Sciences
Q Science > QC Physics
College/School:College of Science and Engineering > Scottish Universities Environmental Research Centre
Journal Name:European Physical Journal Plus
ISSN (Online):2190-5444
Published Online:19 February 2019
Copyright Holders:Copyright © 2019 The Authors
First Published:First published in European Physical Journal Plus 134(2): 69
Publisher Policy:Reproduced under a Creative Commons License

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