Use of Erlang and Exponential Distributions for simulating an isotropic radioactive source in soil

Authors

  • V. Leal Neto Departamento de Energia Nuclear, Universidade Federal de Pernambuco e Centro Federal de Educação Tecnológica de Pernambuco
  • J. W. Vieira Centro Federal de Educação Tecnológica de Pernambuco, Escola Politécnica de Pernambuco e Centro Regional de Ciências Nucleares
  • F. R. A. Lima Centro Regional de Ciências Nucleares

Keywords:

probability distribution function, Monte Carlo methods, absorbed dose, EGS4, voxel phantoms

Abstract

The use of probability distribution functions (PDF) to describe the systematic evaluation of the absorbed dose in regions of a given geometry submitted to ionizing radiation sources is usual practice in numerical dosimetry. An arrangement to approach such problems in the computer must fore see some stages: the initial state of the particles that compose the radioactive source, the transport of these particles in the medium that composes the irradiated geometry, the interaction of radiation with matter, and, finally, the estimated energy deposited in the regions of interest. This paper is part of a study from the Grupo de Dosimetria Numérica that aims to adapt FDP classics for the description of radioactive sources. The problem treated here consists of the simulation of a geometry composed of a person in the centre of a plane circular region where photons emerge in an isotropic azimuthal distribution that has non-classic radial dependence.

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How to Cite

Leal Neto, V., Vieira, J. W., & Lima, F. R. A. (2011). Use of Erlang and Exponential Distributions for simulating an isotropic radioactive source in soil. Scientia Plena, 4(11). Retrieved from https://scientiaplena.emnuvens.com.br/sp/article/view/734

Issue

Vol. 4 No. 11 (2008): November/Novembro 2008

Section

Articles

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