A METHOD FOR PULSE SHAPE DISCRIMINATION

Abstract For some detectors the rise-time of the pulses depends on the kind of particles. By electronical differentiation of the detector pulses the moment at which the differentiated pulses cross the zero level is different for unequal rise times. These differences can be measured and yield informations about the kind of the particles. A suitable apparatus for the pulse shape discrimination at multiplier pulses is described. Using CsI(Tl) crystals similar results were obtained as by other authors. With NaI(Tl) we got a separation better than for CsI(Tl). Some calculations concerning the operation of the method explain the results.