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http://dx.doi.org/10.7742/jksr.2022.16.5.527

Preliminary Study of Cosmic-ray Shielding Material Design Using Monte-Carlo Radiation Transport Code  

Kang, Chang-Woo (CBRN Defense Research Institute)
Kim, Yeong-Chan (CBRN Defense Research Institute)
Publication Information
Journal of the Korean Society of Radiology / v.16, no.5, 2022 , pp. 527-536 More about this Journal
Abstract
The radiation shielding characteristic of neutron shielding material has been studied as the preliminary study in order to design cosmic-ray shielding material. Specially, Soft Magnetic Material, known to be effective in EMP and radiation shielding, has been investigated to check if the material would be applicable to cosmic-ray shielding. In this work, thermal neutron shielding experiment was conducted and the Monte Carlo N-Particle(MCNP) was applied to employ skymap.dat, which is cosmic-ray data embedded in MCNP. As a result, polyethylene, borated polyethylene, and carbon nano tube, containing carbon or hydrogen, have been found to be effective in reduction of neutron flux below 20 MeV (including thermal, epithermal, evaporation). In contrast, the materials composed of iron such as SS316 and Soft Magnetic Material show a good shielding performance in the cascade energy range (above 20 MeV). Since Soft Magnetic Material is consisting of 13% of boron, it can also decrease thermal neutron flux, so it is expected that it would show a significant reduction on the entire range of neutron energy if the Soft Magnetic Material is used with hydrogen and carbon, so called low Z material.
Keywords
Cosmic-ray; Aerospace; Radiation Shielding; Monte-Carlo Modeling;
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Times Cited By KSCI : 2  (Citation Analysis)
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