UT_x老化释氦研究  

Helium Release From Aged Uranium Tritide

作　　者：蔚勇军[1] 敖冰云[2] 常元庆[1] 敬文勇[1] 

机构地区：[1]中国工程物理研究院,四川绵阳621900 [2]表面物理与化学国家重点实验室,四川绵阳621907

出　　处：《核化学与放射化学》2009年第3期186-188,共3页Journal of Nuclear and Radiochemistry

基　　金：国家自然科学基金资助项目(20801007)

摘　　要：为研究老龄氚化铀释放氦的规律,对室温贮存多年的老龄UT0.9～1.2释放的氦压力与组分进行了分析。结果表明,氚化铀经过6～7a老化,氚衰变产生的3He气体约有38.1%～45.3%释放至贮氚铀床空腔内,其纯度为99.9%,贮氚铀床空腔气体压力达1.11～1.36MPa;部分He保留在固相中,He和U的原子比为0.177～0.201。Helium desorption rule from aged uranium tritide was investigated through the pressure measurement and the composition of helium released from uranium tritide stored at room temperature was analysed.After 6 to 7 years aging of uranium tritide,about 38.1%-45.3% He prodeced by disintegration of 3He from uranium tritide was released in the cavum of the uranium bed with the gas pressure of 1.11-1.36 MPa and the purity of 99.9% above,the rest of helium is kept in the solid of uranium tritide with the He/U ratio of O. 177-0.201.

关 键 词：氚化铀 老化 ~3He释放 

分 类 号：TG139.7[一般工业技术—材料科学与工程]