Monte-Carlo calculations of Ge detector escape-peak efficiencies

The authors present calculated first and second escape peak efficiencies for a variety of n-type coaxial Ge detectors using the Monte Carlo method. The results are given for right-circular cylindrical geometries of size ranging from 3-cm diameter * 3-cm thick to 8-cm diameter * 8-cm thick. For compl...

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Bibliographic Details
Published in:IEEE transactions on nuclear science 1991-04, Vol.38 (2), p.221-225
Main Authors: Owens, A., Gehrels, N., Pascarelle, S.M., Teegarden, B.J.
Format: Article
Language:English
Subjects:
440104 - Radiation Instrumentation- High Energy Physics Instrumentation
990200 - Mathematics & Computers
Astronomy
Astrophysics
CALCULATION METHODS
Coaxial components
Detectors
ENERGY DEPENDENCE
Energy measurement
ESCAPE PEAKS
Exact sciences and technology
Extraterrestrial measurements
GE SEMICONDUCTOR DETECTORS
GENERAL AND MISCELLANEOUS//MATHEMATICS, COMPUTING, AND INFORMATION SCIENCE
Geometry
INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
Instruments, apparatus, components and techniques common to several branches of physics and astronomy
Laboratories
MATHEMATICS
Measurement standards
MEASURING INSTRUMENTS
MONTE CARLO METHOD
NUMERICAL ANALYSIS
PEAKS
Physics
RADIATION DETECTORS
SEMICONDUCTOR DETECTORS
Spacecraft Instrumentation
Testing
X- and γ-ray instruments and techniques
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Summary:The authors present calculated first and second escape peak efficiencies for a variety of n-type coaxial Ge detectors using the Monte Carlo method. The results are given for right-circular cylindrical geometries of size ranging from 3-cm diameter * 3-cm thick to 8-cm diameter * 8-cm thick. For completeness, the intrinsic interaction and photopeak efficiencies for energies ranging from 20 keV to 20 MeV are listed. The calculations have been tested against experimental measurement and found to be in agreement to within the quoted errors (typically 10%). It is found that the ratio of the second escape peak efficiency to the first escape peak efficiency, R, is approximately independent of energy for small detector volumes but has a weak power law energy dependence for large volumes. It is shown that R also varies as an inverse power law of the active volume.< >
ISSN:0018-9499
1558-1578
DOI:10.1109/23.289300