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J Radiat Prot > Volume 8(1); 1983 > Article
Journal of Radiation Protection 1983;8(1):33-0.
물과 콘크리트에 의한 중성자(中性子)의 반사효과(反射效果)
민덕기;노성기;
Neutron Reflecting Effects by Water and Concrete
Min, Duck-Kee;Ro, Seung-Gy;
ABSTRACT
Neutron reflecting effects in terms of effective multiplication factor have been calculated with varying water or concrete thickness, and gap distance between concrete reflector and a fissile solution system. A numerical calculation of effective multiplication factors has been carried out by using the discrete ordinates method with the help of the computer code, ANISN. It is revealed that the reflecting .effect by thin concrete is lower than that of the identical thickness of water while the effect by thick water is low compared to that of the identical thickness of concrete. It seems that the effective multiplication factors are first decreasing rapidly with gap distance, which is filled with water, between concrete reflector and the fissile solution system, and then decrease slowly over the distance of about 15cm.
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