Automated gamma-spectrometry with a Ge/Li/-detector

An automated off-line Ge/Li/-spectrometer is described. Its special features are a sample changer with rotating disc store and pneumatic tube, a self-controlling source-detector distance and an autonomous control programmed by cable connections or by punched tape via a central control unit. The system is meant to do complex routine work in a power reactor for the gamma-spectrometric control of the primary cooling system and for activation analysis of various liquid and environmental samples. (T.G.)