Pulse shape analysis of liquid scintillators for neutron studies

By S. Marrone, D. Cano-Ott, N. Colonna, C. Domingo, F. Gramegna, E. González, F. Gunsing, M. Heil, F. Käppeler, P. Mastinu and 8 more. 2002

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The acquisition of signals from liquid scintillators with Flash ADC of high sampling rate ð 1G S=sÞ has been investigated. The possibility to record the signal waveform is of great advantage in studies with g’s and neutrons in a high count-rate environment, as it allows to easily identify and separate pile-up events. The shapes of pulses produced by g-rays and neutrons have been studied for two different liquid scintillators, NE213 and C6D6: A 1-parameter fitting procedure is proposed, which allows to extract information on the particle type and energy. The performance of this method in terms of energy resolution and n=g discrimination is analyzed, together with the capability to identify and resolve pile-up events. r 2002 Elsevier Science B.V. All rights reserved.

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