Neutron, proton and gamma-ray event identification with a HPGe detector through pulse shape analysis

The authors report on a series of preliminary experiments performed to investigate the current pulse shapes produced by gamma-ray, neutron, and proton interactions in a high-purity germanium (HPGe) detector. The pulse shapes are characterized on the basis of their time-to-peak (leading) and time-fro...

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Bibliographic Details
Published in:IEEE transactions on nuclear science 1991-04, Vol.38 (2), p.200-208
Main Authors: Bamford, G.J., Rester, A.C., Coldwell, R.L., Castaneda, C.M.
Format: Article
Language:English
Subjects:
990000 - General & Miscellaneous
BACKGROUND RADIATION
BARYONS
BASIC INTERACTIONS
COMPTON EFFECT
DATA
ELASTIC SCATTERING
ELECTROMAGNETIC INTERACTIONS
ELECTROMAGNETIC RADIATION
Electrons
ELEMENTARY PARTICLES
Event detection
Exact sciences and technology
EXPERIMENTAL DATA
FERMIONS
GAMMA RADIATION
Gamma ray detection
Gamma ray detectors
GE SEMICONDUCTOR DETECTORS
GENERAL AND MISCELLANEOUS//MATHEMATICS, COMPUTING, AND INFORMATION SCIENCE
Germanium
HADRONS
HIGH-PURITY GE DETECTORS
INFORMATION
Instruments, apparatus, components and techniques common to several branches of physics and astronomy
INTERACTIONS
IONIZING RADIATIONS
MEASURING INSTRUMENTS
NEUTRONS
NUCLEONS
NUMERICAL DATA
Other topics in instruments, apparatus, components and techniques common to several branches of physics and astronomy
PARTICLE INTERACTIONS
Physics
PROTONS
Pulse generation
Pulse shaping methods
PULSES
RADIATION DETECTORS
RADIATIONS
SCATTERING
SEMICONDUCTOR DETECTORS
Shape
TIMING PROPERTIES
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Summary:The authors report on a series of preliminary experiments performed to investigate the current pulse shapes produced by gamma-ray, neutron, and proton interactions in a high-purity germanium (HPGe) detector. The pulse shapes are characterized on the basis of their time-to-peak (leading) and time-from-peak (trailing) edges. Each particle type generates a distinct range of current pulse shapes; this information can be used on a pulse-by-pulse basis to indicate which particle interacted in the detector. There is also an indication that current pulse shape information can be used to reduce the Compton background, which generally contributes to the background of any gamma-ray spectrum, by placing timing cuts on the leading and trailing edges of the current pulses.< >
ISSN:0018-9499
1558-1578
DOI:10.1109/23.289297