Simulation of energy absorption spectrum in NaI crystal detector for multiple gamma energy using Monte Carlo method

Journal Article · Thu Apr 16 00:00:00 EDT 2015 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.4917139· OSTI ID:22391495

Wirawan, Rahadi ^[1]; Waris, Abdul; Djamal, Mitra; Handayani, Gunawan ^[1]

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1. Department of Physics, Bandung Institute of Technology, Jl. Ganesha 10, Bandung 40132 (Indonesia)

The spectrum of gamma energy absorption in the NaI crystal (scintillation detector) is the interaction result of gamma photon with NaI crystal, and it’s associated with the photon gamma energy incoming to the detector. Through a simulation approach, we can perform an early observation of gamma energy absorption spectrum in a scintillator crystal detector (NaI) before the experiment conducted. In this paper, we present a simulation model result of gamma energy absorption spectrum for energy 100-700 keV (i.e. 297 keV, 400 keV and 662 keV). This simulation developed based on the concept of photon beam point source distribution and photon cross section interaction with the Monte Carlo method. Our computational code has been successfully predicting the multiple energy peaks absorption spectrum, which derived from multiple photon energy sources.

• OSTI ID: 22391495
• Journal Information: AIP Conference Proceedings, Vol. 1656, Issue 1; Conference: APS 2012: 5. Asian Physics Symposium, Bandung (Indonesia), 10-12 Jul 2012; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
ABSORPTION SPECTRA
COMPUTERIZED SIMULATION
CROSS SECTIONS
CRYSTALS
ENERGY ABSORPTION
ENERGY SOURCES
GAMMA DETECTION
KEV RANGE
MONTE CARLO METHOD
NAI DETECTORS
PHOTON BEAMS
PHOTONS
POINT SOURCES
SODIUM IODIDES