NaI(Tl)-Ge(Li) Coincidence Gamma-Ray Spectrometry for Radionuclide Analysis of Environmental Samples

A multi-parameter NaI(Tl)-Ge(Li) coincidence gamma-ray spectrometry system has been developed for the analysis of environmental samples from nuclear power industry radioactive effluents. Several detector configurations have been evaluated. Data acquisition is by buffer storage of the ADC output and final recording of each event in list mode on magnetic tape. A 16K computer and a 4096 channel, pulse height analyzer are used for accumulation of spectra from the data on magnetic tape. Display and software routines aid in the analysis of the spectral data. The system has been used to study environmental radiochemical analysis problems.