电子俘获核素^（65）Zn的绝对测量方法

ABSOLUTE MEASURING METHOD ABOUT ELECTRON CAPTURE NUCLEAR ￣(65)Zn

讨论了在４πβ（ｐｐｃ）－γ符合装置上测定电子俘获并伴有跃迁到基态的正电子分支的核素￣（６５）Ｚｎ的几种测量方法，以及这些方法所需的修正和可能的误差来源。对各种方法的优缺点进行了评价和实验验证。测得的衰变率在０．３％内一致。

Some methods of the measurement as 4πβ(ppc)-γ coincidence system for ￣(65)Zn,which is aelectron capture nuclide with positron branch that transmits to ground,the required correctionsand possible sources of erros are described.The advantages and disadvantages of each method areevaluated and proved by experiment,and the decay rate measured by each method is consistentwithin0.3%.