Photon and neutron shielding features of quarry tuff
| Autor: | Vishwanath P. Singh, Hector Rene Vega-Carrillo, José Rodríguez-Rodríguez, Karen Arlet Guzman-Garcia, César A. Juárez-Alvarado, Héctor Asael de Leon-Martinez |
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| Rok vydání: | 2018 |
| Předmět: |
Physics
Physics::Instrumentation and Detectors 010308 nuclear & particles physics Equivalent dose Monte Carlo method Neutron radiation Cantera 01 natural sciences 030218 nuclear medicine & medical imaging Nuclear physics 03 medical and health sciences 0302 clinical medicine Nuclear Energy and Engineering Attenuation coefficient 0103 physical sciences Electromagnetic shielding Neutron Effective atomic number |
| Zdroj: | Annals of Nuclear Energy. 112:411-417 |
| ISSN: | 0306-4549 |
| DOI: | 10.1016/j.anucene.2017.10.042 |
| Popis: | The shielding characteristics of quarry tuff (cantera) against photons and 241 AmBe neutrons, were determined. The effective atomic number of cantera, the Exposure and the Energy absorption buildup factors for photons in cantera were also calculated. The XCOM code was used to calculate the photon interaction coefficients. Also, Monte Carlo method was used to model a photon transmission experiment in cantera. Collided and uncollided photon fluence, Kerma in air, and Ambient dose equivalent were estimated. With the uncollided photon fluence the linear attenuation coefficients were determined and compared with those calculated with the XCOM code. The linear attenuation coefficient for 0.662 MeV photons was compared with the coefficient measured with a NaI(Tl)-based γ-ray spectrometer and a 137 Cs source. The Monte Carlo model was also used to estimate the neutron spectra of 241 AmBe neutrons in function of cantera thickness, the Effective and the Ambient dose equivalent for the collided and uncollided neutrons. Cantera has good shielding properties for low energy photons and poor shielding features against 241 AmBe neutrons. |
| Databáze: | OpenAIRE |
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