Evaluation of gamma ray and neutron attenuation capability of thermoplastic polymers

被引：37
作者：
More, Chaitali V. [1 ]
Alavian, Hoda [2 ]
Pawar, Pravina P. [1 ]
机构：
[1] Dr Babasaheb Ambedkar Marathwada Univ, Dept Phys, Aurangabad 431004, Maharashtra, India
[2] Shahrood Univ Technol, Fac Phys & Nucl Engn, Shahrood, Iran
来源：
APPLIED RADIATION AND ISOTOPES | 2021年 / 176卷
关键词：
Fast neutron removal cross-section; G-P fitting; MCNPX; Mixed neutron-gamma radiation field; Buildup factor; EXPOSURE BUILDUP FACTORS; SHIELDING PROPERTIES; ENERGY-ABSORPTION; X-RAY; PARAMETERS; CONCRETE; COMPOSITE; PROGRAM;
D O I：
10.1016/j.apradiso.2021.109884
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
The fast neutron and gamma ray attenuation capability of the most common thermoplastic polymers used in nuclear applications has been evaluated theoretically. Monte Carlo simulation has been used to compute the gamma-ray energy absorption buildup factor in the energy range 0.015-15 MeV at penetration depths up to 40 MFP. The results of MCNPX calculations have been validated against the results derived from the Geometric Progression fitting method. To evaluate neutron attenuation performance of the polymers, the fast neutron removal cross-section has been determined using theoretical database. Despite the superior ability of polysulfone and poly (ether sulfone) in gamma ray attenuation, high-density polyethylene has been found to have the best fast neutron removal ability among all. The detailed insights into the fast neutron and gamma ray shielding properties of selected polymers in the present work might have great potential applications in nuclear systems.
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页数：10
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