Spectroscopic analysis of photoneutrons in intense γ-ray background

CR-39 SSNTD is used to measure the photoneutron spectrum produced by a medical linear accelerator in an intense γ-ray background. The spectroscopic resolution and the neutron detection threshold have been improved by introducing the event selection criteria, based on the track diameter-brightness co...

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Bibliographic Details
Published in:Applied radiation and isotopes 2023-10, Vol.200, p.110944-110944, Article 110944
Main Authors: Arun, P.V., Midhun, C.V., Musthafa, M.M., Silpa, A., Naiby, Joseph, Sreena, M., Farhana, M.P. Thesni, Keerthi, E.S., Deepthi, M.V., Antony, Joseph
Format: Article
Language:English
Subjects:
Neutron dosimetry
Neutron spectrum
Passive neutron spectroscopy
Photonuclear reactions
SSNTD
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Summary:CR-39 SSNTD is used to measure the photoneutron spectrum produced by a medical linear accelerator in an intense γ-ray background. The spectroscopic resolution and the neutron detection threshold have been improved by introducing the event selection criteria, based on the track diameter-brightness correlation. The CR-39 detector’s efficiency is determined by adapting the 1H(n,el) cross section from the ENDF/B-VIII.0 evaluations. The measured spectrum was reproduced through Talys-1.96 calculations by implementing the Gogny-HFB microscopic level density model.
ISSN:0969-8043
1872-9800
DOI:10.1016/j.apradiso.2023.110944