Design and calibration of a passive detector for separating neutron, proton and $$\upalpha $$-particles in mixed radiation fields
| Autor: | Mehran Taheri, Farbod Bahrami, Fereidoun Mianji, Samaneh Baradaran |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Physics
Proton Physics::Instrumentation and Detectors 010308 nuclear & particles physics Nuclear Theory General Physics and Astronomy Radiation 01 natural sciences Charged particle Neutron temperature 010305 fluids & plasmas law.invention law 0103 physical sciences Van de Graaff generator Particle Neutron Atomic physics Nuclear Experiment Energy (signal processing) |
| Zdroj: | Pramana. 94 |
| ISSN: | 0973-7111 0304-4289 |
| DOI: | 10.1007/s12043-020-1934-9 |
| Popis: | In this study, a new detector is designed based on CR-39, and separately calibrated for protons, neutrons and $$\upalpha $$ -particles under the same etching condition. To that end, an americium–beryllium standard source ( $${}^{241}\hbox {Am--Be}$$ ) and a plexiglass phantom for neutron irradiation, brass collimators and an americium standard source ( $${}^{241}\hbox {Am})$$ for alpha irradiation, as well as a Van de Graaff accelerator for proton irradiation were employed. Sodium hydroxide solution of 6.25 N at $$85^{\circ }\hbox {C}$$ 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 $$\upalpha $$ -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. |
| Databáze: | OpenAIRE |
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