由于高放废物中的锕系核素不断发生α衰变，因此锕系核素的处理和处置必须考虑α内辐照效应和新生成的子体影响。对于有长寿命衰变子体的锕系核素固化，其固化体的长期安全稳定在很大程度上取决于衰变子体的行为。针对241 Am，243 Cm的α衰变过程中子体的寿命远大于母体的行为，利用级联衰变理论计算了核素含量随衰变时间的变化规律，计算结果显示在长达数万年的处置时间内，长寿衰变子体将是固化体的主要成分。锕系核素的锆石结构固化体（ AnSiO4）研究表明，锕系核素在衰变过程中固化体的体积随锕系核素离子半径呈线性变化。计算表明在锕系核素固化体上万年的地址处置过程中，子体导致的241 Am和243 Cm锆石结构固化体（ AnSiO4）的体积将分别增大约4％，5％。子体核素的产生将影响锕系核素固化体的抗辐照性能。%New decay daughters have been gengerated in the decay process of Actinides , so the effects of alpha self-radiation damage and decay daughters should be considered in Actinides treatment and diapos -al process .The security and stablity of Actinides immoblization depend to a great extent on the behavior of the new long-lived decay daughters .The changes of isotopes components versus decay time in 241 Am, 243 Cm immoblization were calculated by the decay cascade method in this experiment .The results exhibit that the decay long-lived daughters are the main components of immmoblization in the long -term dis-posal period.Detailed experimental studies about zircon structure (AnSiO4) show that the unit cell vol-ume increases linearly with the increasing ionic radius of the daughters An -site cations.The calculations indicate that in the long-term disposal period the cell volume expansion of 241 Am and 243 Cm zircon struc-ture immoblization (AnSiO4) is 4%and 5%respectivly.The resistance of Actinides immoblization to ra-diation damage varies with the decay -daughters composition .
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