Journal
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS
Volume 343, Issue -, Pages 132-137Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.nimb.2014.10.016
Keywords
Monte Carlo; Geant4-DNA; Elastic scattering; Cross section; Liquid water
Categories
Funding
- Associated International Laboratory France Vietnam Particle Physics Laboratory
- FAPESP foundation - Brazil [2011/51594-2]
- European Space Agency - France [BioRadII 4000107387/12/NL/AK]
- Institut National de la Recherche Medicale et de la Sante, through the PhysiCancer MICRONAUTE project
- French CNRS [PICS 5873]
- Saint Joseph University in Beirut (Lebanon) [PICS 5873]
- Fundacao de Amparo a Pesquisa do Estado de Sao Paulo (FAPESP) [11/51594-2] Funding Source: FAPESP
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Elastic scattering of protons and alpha (a) particles by water molecules cannot be neglected at low incident energies. However, this physical process is currently not available in the Geant4-DNA extension of the Geant4 Monte Carlo simulation toolkit. In this work, we report on theoretical differential and integral cross sections of the elastic scattering process for 100 eV-1 MeV incident protons and for 100 eV-10 MeV incident a particles in liquid water. The calculations are performed within the classical framework described by Everhart et al., Ziegler et al. and by the ICRU 49 Report. Then, we propose an implementation of the corresponding classes into the Geant4-DNA toolkit for modeling the elastic scattering of protons and a particles. Stopping powers as well as ranges are also reported. Then, it clearly appears that the account of the elastic scattering process in the slowing-down of the charged particle improves the agreement with the existing data in particular with the ICRU recommendations. (C) 2014 Elsevier B.V. All rights reserved.
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