• Design and calibration of a passive detector for separating neutron, proton and α-particles in mixed radiation fields

• Fulltext

https://www.ias.ac.in/article/fulltext/pram/094/0066

• Keywords

CR-39 solid-state nuclear track detector; track detection; mixed radiation field; calibration

• Abstract

In this study, a new detector is designed based on CR-39, and separately calibrated for protons, neutrons and $\alpha$-particles under the same etching condition. To that end, an americium–beryllium standard source ($^{241}$Am–Be) and a plexiglass phantom for neutron irradiation, brass collimators and an americium standard source ($^{241}\rm{Am}$) for alpha irradiation, as well as a Van de Graaff accelerator for proton irradiation were employed. Sodium hydroxide solution of 6.25 N at $85^{\circ}\rm{C}$ was also used for CR-39 chemical etching. Considering the detection principle of the device, different filters were designed to help distinguish between fast neutron particles, thermal neutrons, albedo neutrons, protons and $\alpha$-particles in mixed radiation fields. Moreover, both the contribution of each particle and the ability of the designed detector to discriminate energy of charged particles were quantified.

• Author Affiliations

1. Department of Medical Radiation Engineering, Shiraz University, Shiraz 71964 84334, Iran
2. Nuclear Science and Technology Research Institute, Tehran 14399 836, Iran
3. National Radiation Protection Department, Iran Nuclear Regulatory Authority, Tehran 14155 1339, Iran

• Pramana – Journal of Physics

Volume 96, 2022
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• Editorial Note on Continuous Article Publication

Posted on July 25, 2019