Ch 17 GK

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Ch 17 GK I ? Linear and Logical Pulse II ?
Instruments Standard III ? Application
Specific Integrated Circuits IV ? Summary of
Pulse Processing Units V ? Components common
to many applications. VI Pulse
Counting Systems VII Pulse Height
Analysis VIII Digital Pulse Processing IX
? System Involving Pulse Timing a) Time Pick
off methods b) Measurements of
Timing Properties ? c) Modular
Instruments for Timing Measurements X Pulse
shape discrimination
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10.9 PULSE-SHAPE DISCRIMINATION Pulse-shape
discrimination (PSD) is the name given to a
process that differentiates pulses produced by
different types of particles in the same
detector. PSD has most common use to
discriminate between pulses generated by neutrons
and gammas in organic scintillators (see also
Chap. 14). Measurement of the amount of light
produced in organic scintillators by neutrons and
gammas shows that both the differential and
integral light intensities are different as
functions of time. It is obvious that the pulses
from neutrons and gammas have different time
characteristics, and it is this property that is
used as the basis for PSD.
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