Total activation analysis: A new approach

The new measurement system for high-resolution, high-rate gamma -spectromet ry consists of a 20% n-HPGe detector with a transistor reset preamplifier, a PLDF-system, and a software implementation of an LFC-multichannel analyze r allowing the continuous registration of 120 pairs of 16k channel gamma -s pectra, pile-up and dead-time corrected, and uncorrected [3, 4]. Thus, it i s possible to obtain the total information contained in the gamma -spectra of short- and medium-lived radionuclides after a short neutron irradiation. The new gamma -spectrometry system was tested by activation of a mixture o f In, Se, and Ba. This enables the optimal analysis of radionuclides by sel ecting the optimal summation range simultaneously with a quality assurance of the data by plotting the decay curves of the respective radionuclides.