Real-time, fast-neutron spectroscopy for source identification in mixed-field imaging applications

Beaumont, J. and Mellor, M. and Joyce, M.J. (2012) Real-time, fast-neutron spectroscopy for source identification in mixed-field imaging applications. In: 2012 IEEE Nuclear Science Symposium and Medical Imaging Conference Record (NSS/MIC). IEEE, pp. 219-221. ISBN 9781467320283

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Abstract

The need for radiation assessment in nuclear decommissioning and decontamination has led to the production of several gamma-ray imaging systems. Those currently in widespread use, rely solely on the gamma-ray field to obtain spatial information of radioactive sources. Recent advances in detector technology allow mixed radiation fields to be discriminated in real-time and thus to include neutron radiation in non-intrusive radiological evaluation. In this paper neutron energy deposition in an EJ-309 detector has been investigated for three different neutron sources showing they can be distinguished with relatively low exposure to a detector; making way for use in imaging applications. Imaging experiments were performed with americium-beryllium and californium allowing the sources to be identified individually. These sources were imaged simultaneously in close proximity and were distinguished using a least chi squared fit technique.

Item Type:
Contribution in Book/Report/Proceedings
ID Code:
132352
Deposited By:
Deposited On:
01 Apr 2019 15:40
Refereed?:
Yes
Published?:
Published
Last Modified:
01 Jan 2020 10:55