Fast timing performances of high purity germanium detector and its application

In order to apply high purity germanium (HPGe) detector to physical experiments, the various factors influencing the timing performances of the HPGe detector timing spectrometer have been studied and the optimum parameters for minimum time resolution of the spectrometer have been found out. A HPGe detectors time differential perturbed angular correlation spectrometer has been set up. The technical specifications of the spectrometer are as follows: time resolution 4.19 ns; energy resolution 2.0 keV; differential nonlinearity < +-2.0%; counting rate: 120 x 103 s-1. By means of this spectrometer, the microscopic mechanism of Bi series high temperature superconductor has been successfully investigated using 204Bi nuclear probes