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. 2023 Oct:200:110944.
doi: 10.1016/j.apradiso.2023.110944. Epub 2023 Jul 20.

Spectroscopic analysis of photoneutrons in intense γ-ray background

P V Arun  1 , C V Midhun  2 , M M Musthafa  3 , A Silpa  4 , Joseph Naiby  5 , M Sreena  2 , M P Thesni Farhana  2 , E S Keerthi  2 , M V Deepthi  2 , Joseph Antony  2
Affiliations

Spectroscopic analysis of photoneutrons in intense γ-ray background

P V Arun et al. Appl Radiat Isot. 2023 Oct.

Abstract

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.

Keywords: Neutron dosimetry; Neutron spectrum; Passive neutron spectroscopy; Photonuclear reactions; SSNTD.

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Conflict of interest statement

Declaration of competing interest Authors declare that this article does not contain any conflict of interests.

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