Anticompton spectrometer element studies

Sensitive measurements of the trace elements require the use of an active suppression of the overall detection background. For this reason, an anticompton system made of NaI and HPGe has been constructed at the new underground laboratory in Garching near Munich for analysis of irradiated samples. Significantly improved limits for trace elements’ concentration in nylon have been obtained. A suppression factor of 16 in the energy region of 100–400 keV was reached.