Oct 23, 2010

Comparison of GEANT4 very low energy cross section models with experimental data in water

Medical Physics
S IncertiC Zacharatou

Abstract

The GEANT4 general-purpose Monte Carlo simulation toolkit is able to simulate physical interaction processes of electrons, hydrogen and helium atoms with charge states (H0, H+) and (He0, He+, He2+), respectively, in liquid water, the main component of biological systems, down to the electron volt regime and the submicrometer scale, providing GEANT4 users with the so-called "GEANT4-DNA" physics models suitable for microdosimetry simulation applications. The corresponding software has been recently re-engineered in order to provide GEANT4 users with a coherent and unique approach to the simulation of electromagnetic interactions within the GEANT4 toolkit framework (since GEANT4 version 9.3 beta). This work presents a quantitative comparison of these physics models with a collection of experimental data in water collected from the literature. An evaluation of the closeness between the total and differential cross section models available in the GEANT4 toolkit for microdosimetry and experimental reference data is performed using a dedicated statistical toolkit that includes the Kolmogorov-Smirnov statistical test. The authors used experimental data acquired in water vapor as direct measurements in the liquid phase are not yet avail...Continue Reading

  • References16
  • Citations126
  • References16
  • Citations126

Citations

Mentioned in this Paper

Fast Electrons
Nuclear Track Detection
Statistical Test
Theoretical Study
Protons
Computer Programs and Programming
Vapor
Binding (Molecular Function)
Monte Carlo Method
Helium

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