CAJ | 학술논문

分别选取重晶石、钨酸铅和BaPb0．75 Bi0．25 O3这三种不同的防辐射填料按照一定的比例掺和到砂浆基材中，得到不同的防辐射砂浆。针对天然放射系铀系、锕系和钍系放出的特征γ射线，采用蒙特卡罗数值模拟方法计算了防辐射砂浆混凝土墙体的γ射线透射率与线性衰减系数。结果表明，三种不同防辐射砂浆对γ射线均有一定的防护作用，其中钨酸铅砂浆对γ射线的防护性能最好，且砂浆层厚度越厚，防护效果越好。
분별선취중정석、오산연화BaPb0．75 Bi0．25 O3저삼충불동적방복사전료안조일정적비례참화도사장기재중，득도불동적방복사사장。침대천연방사계유계、아계화토계방출적특정γ사선，채용몽특잡라수치모의방법계산료방복사사장혼응토장체적γ사선투사솔여선성쇠감계수。결과표명，삼충불동방복사사장대γ사선균유일정적방호작용，기중오산연사장대γ사선적방호성능최호，차사장층후도월후，방호효과월호。
By stuffing barite, lead tungstate and BaPb0.75 Bi0.25 O3 respectively to the mortar substrate according to certain proportion, three different anti-radiation mortars are obtained.Theγray transmissibility and the linear attenuation coefficient of the anti-radiation mortar concrete wall for these characteristic γrays emitted from natural radioactive series such as uranium, actinide and thorium are calculated by Monte Carlo numerical simu-lation method.It is shown that three different anti-radiation mortars play a role in preventingγrays, where it is the best with the tungstate mortar, and the thicker mortar layer is better in the prevention.