Gamma Ray Buildup Factor for Finite Media in Energy Range (4-10) MeV for Al and Pb.

Authors

  • Laith A Al-Ani Department of Physics, College of Science, Al-Nahrain University, Baghdad-Iraq.
  • Loay E Goarge Department of Physics, College of Science, Baghdad University, Baghdad-Iraq.
  • Marwa S Mahdi Department of Physics, College of Science, Al-Nahrain University, Baghdad-Iraq.

Keywords:

Dose buildup factor, Simulation, Monte Carlo method

Abstract

A computer program based on Monte Carlo method had been designed and written in visual basic computer language and utilized for simulating the classic problem of gamma ray beam incident on finite plane slabs of absorbing materials. The source geometry adopted in this program is plane normal source. Dose buildup factor of gamma photons in the absence and presence pair production effect have been calculated in the energy range (4-10) MeV for Aluminum and Lead up to 5 mean free path thickness. Dose buildup factor in the presence of pair production is higher than dose buildup factor in the absence of pair production effect. The deviation between the values of dose buildup factor in the presence and absence pair production is increased when the energy is increased within the studied energy range because the cross section for pair production is increased within the studied energy range.

 

Published

2018-06-21

Issue

Section

Articles

How to Cite

(1)
Gamma Ray Buildup Factor for Finite Media in Energy Range (4-10) MeV for Al and Pb. ANJS 2018, 18 (1), 88-95.