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https://doi.org/10.3938/NPSM.69.194
A Study on the Shielding Ability of Current Aerospace Materials
New Phys.: Sae Mulli 2019; 69: 194~201
Published online February 28, 2019;  https://doi.org/10.3938/NPSM.69.194
© 2019 New Physics: Sae Mulli.

Jong-Kwan WOO1, Sue Lynn LEE2, Dong LIU*3

1 Department of Physics, Jeju National University, Jeju 63243, Korea

2 Division of Engineering, Cambridge University, Cambridgeshire, England

3 BK21plus Clean Energy Convergence and Integration Center for Human Resources Training and Education, Jeju National University, Jeju 63243, Korea

Correspondence to: LIUDONGCN@jejunu.ac.kr
Received September 11, 2018; Revised January 11, 2019; Accepted January 11, 2019.
cc This is an open-access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract
Space radiation is one of the biggest concerns for manned spaceflights, and along with the swift development of spaceflight enterprises, research on materials to be use as shields against space radiation has become increasingly important. In this study, we summarize the major composition of space radiation and define the human phantom scoring volume, the shielding materials and the geometry of shielding structure. Then, we comprehensively consider the radiation shielding properties of various materials, together with a consideration of the mass problems associated with those shielding materials. The radiation shielding ability of materials against certain space radiation particles was appraised from the perspectives of radiation dose. The results showed for shielding materials that of about the same mass, employing composites and non-metal materials as shielding materials rather than metals or alloys was more advantageous. In addition, in practical applications, the cabin walls of spaceships usually consist of multiple layers. In this situation, cabin wall that combines high-density layers and low-density layers alternately has the optimal shielding effect.
PACS numbers: 07.77.Ka, 28.41.Qb, 52.65.Pp
Keywords: Space radiation, Current aerospace materials, Radiation shielding, Monte Carlo method


February 2019, 69 (2)
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