Algorithms for pulse shape analysis using silicon detectors

The development of digital electronics and their application to nuclear spectroscopy has provided an opportunity to perform experiments beyond the technical capabilities of analog systems. The pulse-shape analysis of Si detectors is described here for the selective identification of pile-up pulses resulting from the sequential alpha decay of 109Xe and 105Te isotopes. A two stage offline pulse shape analysis algorithm is described which is able to detect pile-up pulses from the two alpha decays with time differences between the two individual pulses as low as 100 ns over a wide range of relative amplitudes.