用双振荡仪测量死时间和符合分辨时间

DETERMINATION OF DEAD TIME AND COINCIDENCE RESOLVING TIME WITH DOUBLE OSCILLATOR

摘要: <正> 一、前言 4πβ-γ符合,包括4πβ(PC)-γ符合、4πβ(PPC)-γ符合和4πβ(LS)-γ符合等是放射性核素活度计量学中最主要的测量方法,死时间和偶然符合的修正是两项重要的修正。由于放射性活度测量正向高计数率发展,因此,准确测量死时间和符合分辨时间对于
- 死时间 ,
- 符合分辨时间 ,
- 双振荡仪
Abstract: At present, the double oscillator method is among the best methods formeasuring dead time and coincidence resolving time. This paper introduces themeasurement principle of this method. The standard deviation of measuring deadtime and resolving time, with this method, is respectly about 1×10~(-4) and(2--3)×10~(-4).
- Dead time ,
- ,
- Coincidence resolving time

[1]	Baerg, A. P., Metrologia, 1, 131(1965).
[2]	Muller, J.W., Nucl. Instr. and Methods, 112, 47(1973).
[3]	Muller, J.W., Report, BIPM-69/11, 1969.
[4]	Wu X.Z., et al., Report, BIPM-80/5, 1981．