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Out-Of-Field Beam Characteristics of a 6Mv Photon Beam: Results of a Monte Carlo Study Publisher



Atarod M1 ; Shokrani P1 ; Azarnoosh A2
Authors
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Authors Affiliations
  1. 1. Medical Physics Department, Isfahan University of Medical Sciences, Isfahan, Iran
  2. 2. Physics Department, Islamic Azad University, Dezful Branch, Dezful, Iran

Source: Applied Radiation and Isotopes Published:2013


Abstract

Detailed characteristics of particles in the periphery of a 6. MV photon beam resulting from the exposure of a water phantom were analyzed. The characteristics at the periphery were determined with respect to particles' origin and charge, using Monte Carlo simulations. Results showed that in the peripheral regions, the energy fluence and the mean energy distribution of particles are independent of depth, and the majority of charged particles originate in the irradiated volume. The results are used to examine out-of-field dosimetry factors. © 2012 Elsevier Ltd.
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