Calculation of efficiency and resolution of a hexagonal NaI(Tl) detector as a function of source position

Most gamma-ray scintillation detectors currently in use are made from inorganic materials that have a relatively high electron density. Quite often they are used to build multidetector systems that provide high scintillation light output. The performance of a gamma radiation detector (its detection...

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Bibliographic Details
Published in:Journal of instrumentation 2024-07, Vol.19 (7), p.T07003
Main Authors: Hamzawy, A., Badawi, M.S., Ruskov, I.N., Grozdanov, D.N., Badawi, M.I., Thabet, A.A., Kopatch, Yu.N., Fedorov, N.A., Salem, B.A., collaboration, TANGRA
Format: Article
Language:English
Subjects:
Detector modelling and simulations I (interaction of radiation with matter, interaction of photons with matter, interaction of hadrons with matter, etc)
Efficiency
Electron density
Energy resolution
Gamma detectors (scintillators, CZT, HPGe, HgI etc)
Gamma rays
Inelastic scattering
Inorganic materials
Instrumentation and methods for time-of-flight (TOF) spectroscopy
Neutron scattering
Neutrons
Radiation
Radiation detectors
Response functions
Scintillation
Scintillation counters
Scintillators, scintillation and light emission processes (solid, gas and liquid scintillators)
Sensors
Time response
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Summary:Most gamma-ray scintillation detectors currently in use are made from inorganic materials that have a relatively high electron density. Quite often they are used to build multidetector systems that provide high scintillation light output. The performance of a gamma radiation detector (its detection efficiency) depends on the shape and size of the crystal, as well as on the source-to-detector geometry used. The NaI(Tl) gamma detector exhibits moderate energy resolution but relatively high gamma-ray detection efficiency and fast time response. In this work, the efficiency and resolution of a scintillation hexagonal detector are studied to optimize its response function. This type and size of scintillator were selected to construct a budget-friendly, reconfigurable, easy-to-maintain multidetector system for registering gamma-rays following fission, capture, and inelastic neutron scattering reactions, with reasonably good energy and time resolutions The research results made it possible to establish a geometric solid angle that increases the efficiency of recording gamma-ray radiation of the hexagonal NaI(Tl) scintillation probe under study.
ISSN:1748-0221
1748-0221
DOI:10.1088/1748-0221/19/07/T07003