通用级联衰变动力学简化计算  

Simplified Calculation of Dynamic Decay Cascade in Common Use

作　　者：高正明[1] 何彬[1] 赵娟[2] 裴永泉[3] 左广霞[1] 

机构地区：[1]第二炮兵工程学院102室 [2]荆楚理工学院电子信息工程学院 [3]96411部队

出　　处：《原子能科学技术》2009年第12期1077-1080,共4页Atomic Energy Science and Technology

摘　　要：级联衰变动力学方程是描述放射性同位素衰变规律的基本方程之一,衰变过程的复杂性和衰变子体的多样性,使级联衰变动力学计算十分复杂。本工作分3种情况给出通用级联衰变动力学解析解表达式,用矩阵函数对其进行形式简化,使级联衰变动力学计算简单明了,便于应用;对级联衰变公式进行简单讨论,并利用该公式求解了239Pu级联衰变中各级子体的原子数及239Pu的衰变热功率。Decay cascade equations describing the decay ways of radioactive isotopes are very complex due to the complexity of decay ways and variety of daughters. This work solved the decay dynamic functions and gave the simplified analytical answer equations in three forms by means of function matrix. The decay dynamic functions were simplified and can be easily used in application. Finally, nuclei number of every grade daughters of ^239 Pu was given and the decay heating power of ^239 Pu was also calculated.

关 键 词：级联衰变 矩阵函数 衰变热功率 

分 类 号：O571.3[理学—粒子物理与原子核物理]