The energy spectrum of 662 keV photons in a water equivalent phantom
Date
2012-07
Authors
Yalçın, Sezai
Gündoğdu, Özcan
Sharaf, Jamal M.
Bradley, David A.
Journal Title
Journal ISSN
Volume Title
Publisher
Pergamon-Elsevier Science
Abstract
Investigation is made on the energy spectrum of photons originating from interactions of 662 key primary gamma-ray photons emitted by a point source positioned at the centre of a water equivalent solid phantom of dimensions 19 cm x 19 cm x 24 cm. Peaks resulting from total energy loss (photo-peak) and multiple and back scattering have been observed using a 51 mm x 51 mm Nal(TI) detector; good agreement being found between the measured and simulated response functions. The energy spectrum of the gamma photons obtained through the Monte Carlo simulation reveals local maxima at about 100 key and 210 keV, being also observed in the experimental response function. Such spectra can be used as a method of testing the water equivalence of solid phantom media before their use for dosimetry measurements.
Description
Keywords
Chemistry, Nuclear science & technology, Physics, Water equivalent phantom, Monte carlo, Transmitted photon spectrum, Multiple-scattering, Ray, Compton, Backscattering, Energy dissipation, Gamma rays, Intelligent systems, Monte carlo methods, Photons, Sodium Iodide, Spectroscopy, Dosimetry measurement, Gamma-ray photons, Response functions, Simulated response, Total energy loss, Transmitted photon spectrums, Water equivalence, Water equivalent phantoms, Phantoms
Citation
Tarım, U. A. vd. (2012). "The energy spectrum of 662 keV photons in a water equivalent phantom". Radiation Physics and Chemistry, 81(7), 745-748.