防辐射有机玻璃板材的抗辐射性能

Shielding and Resistant Properties of Radiation─Proof Methacrylate Sheets

系统研究了含铅有机玻璃、含钡有机玻璃、含硼有机玻璃和普通有机玻璃的ｘ、γ射线和中子射线防护性能及其耐６０Ｃγ射线辐照稳定性。结果表明，含铅有机玻璃板材具有良好的ｘ射线、反应堆热柱γ射线屏蔽性能；合硼有机玻璃板材具有良好的热中子屏蔽性能；含钡有机玻璃板材的褪化裂变谱中子辐射屏蔽性能良好；含钡有机玻璃和普通有机玻璃可耐１０５～１０６Ｇｙ的６０Ｃｏｙ射线辐照；含铅有机玻璃板材耐６０Ｃｏｙ射线照射能力小于１０５Ｇｙ。

The radiation resistant properties of Pb--,Ba--,and B-containing methacrylate sheets andordinary sheet against X-- ray, T -- ray neutron shielding and 6oCoY-- ray of different energyare studied. The results show that the Pb--containing methacrylate sheets are excellent for X-ray and reactor r--ray shielding, the B--containing sheet is effective to thermal neutron shielding ;and the Ba--containing sheets are useful in shielding the fission spectrum neutron. The resistant dosage of Ba--containing and ordinary methacrylate sheets to 60CoY--ray is 105-- 106 Gy.And the resistant dosage of Pb--containing methacrylate sheets to 60COY-- ray is 105Gy.