期刊
JOURNAL OF RADIOLOGICAL PROTECTION
卷 35, 期 3, 页码 507-515出版社
IOP PUBLISHING LTD
DOI: 10.1088/0952-4746/35/3/507
关键词
ingestion dose; cargo interrogation; food activation; induced activity; neutron activation
类别
资金
- STFC [ST/I00598X/1]
- Siemens
- Engineering and Physical Sciences Research Council [EP/E007635/1] Funding Source: researchfish
- Science and Technology Facilities Council [ST/I00598X/1] Funding Source: researchfish
- EPSRC [EP/E007635/1] Funding Source: UKRI
- STFC [ST/I00598X/1] Funding Source: UKRI
In recent years there has been growing interest in the use of neutron scanning techniques for security. Neutron techniques with a range of energy spectra including thermal, white and fast neutrons have been shown to work in different scenarios. As international interest in neutron scanning increases the risk of activating cargo, especially foodstuffs must be considered. There has been a limited amount of research into the activation of foods by neutron beams and we have sought to improve the amount of information available. In this paper we show that for three important metrics; activity, ingestion dose and Time to Background there is a strong dependence on the food being irradiated and a weak dependence on the energy of irradiation. Previous studies into activation used results based on irradiation of pharmaceuticals as the basis for research into activation of food. The earlier work reports that Na-24 production is the dominant threat which motivated the search for Na-23(n, gamma)Na-24 in highly salted foods. We show that K-42 can be more significant than Na-24 in low sodium foods such as Bananas and Potatoes.
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