密闭型氡室中放射性平衡变化规律的探讨  

The Discussion on Radioactive Equilibrium Variation in Airtight Radon Chamber

作　　者：张雄杰[1,2] 张叶[2] 汤彬[1,2] 王仁波[1,2] 瞿金辉[1,2] 

机构地区：[1]核技术应用教育部工程研究中心(东华理工大学),江西南昌330013 [2]东华理工大学,江西抚州344000

出　　处：《核电子学与探测技术》2012年第2期192-195,共4页Nuclear Electronics & Detection Technology

基　　金：国家自然科学基金项目(11065002);江西省自然科学基金项目(2010GZW0001);江西省教育厅科技计划项目(GJJ10175);核技术应用教育部工程研究中心项目(HJSJYB2010-05);东华理工大学校长基金项目(DHXK1114)支持

摘　　要：针对运用动态稳定技术实现氡室氡浓度稳定的密闭型氡室,推导了氡室氡及其短寿子体浓度的变化规律公式;通过详细分析首次补氡和中途补氡过程中密闭型氡室中放射性平衡变化规律,得出密闭型氡室进入放射性平衡期后,氡箱中的氡及其短寿子体长期处在平衡或近平衡状态,工作在平衡期的氡室可以开展仪器标定、调整结合态份额等实验和工作。该研究方法和成果为进一步开展氡室氡子体潜能浓度控制、放射性气溶胶浓度控制、氡子体动力学行为研究提供了方法和理论基础。The dynamic and steady technology was used to achieve airtight radon chamber in which the radon concentration could be in stability, and the variation of the radon and its short - lived daughters was derived By detailedly analyzing the radioactive equilibrium variation in airtight radon chamber in the process of first and midway radon supplement, radon and its short -lived daughters in the radon chamber would be in long -term equilibrium or near equilibrium state after the and the radon chamber in this state could be airtight radon chamber was in the radioactive equilibrium period, carried out to develop instrument calibration work, adjust bound share experiment and so on. The research methods and results would provide a method and theoretical basis for further developing the potential concentration control of radon daughters, radioactive aerosol concentration con- trol and dynamic behavior study of radon daughters.

关 键 词：氡室 氡子体 放射性平衡 

分 类 号：TL84[核科学技术—核技术及应用]