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Modeling secondary particle tracks generated by intermediate- and low-energy protons in water with the Low-Energy Particle Track Simulation code

AuthorsVerkhovtsev, A. ; Traore, A. ; Muñoz, Antonio; Blanco, Francisco; García, Gustavo
KeywordsMonte Carlo simulations
Low-energy electrons
Track structure
Issue Date20-Sep-2017
CitationRadiation Physics and Chemistry 130: 371-378 (2017)
AbstractUsing a recent extension of the Low-Energy Particle Track Simulation (LEPTS) Monte Carlo code, we model the slowing-down of heavy charged particles propagating in water, combined with an explicit molecular-level description of radiation effects due to the formation of secondary electrons, their propagation through the medium, and electron-induced molecular dissociations. As a case study, we consider the transport of protons with the initial energy of 1 MeV until their thermalization, so that we cover the energy range that contributes mainly to the energy deposition in the Bragg peak region. In order to include protons into the simulation procedure, a comprehensive dataset of integral and differential cross sections of elastic and inelastic scattering of intermediate- and low-energy protons from water molecules is created. Experimental and theoretical cross sections available in the literature are carefully examined, compared and verified. The ionization cross section by protons includes recent experimental measurements of the production of different charged fragments.
Description8 pags., 7 figs., 1 tab.
Publisher version (URL)https://doi.org/10.1016/j.radphyschem.2016.09.021
Identifiersdoi: 10.1016/j.radphyschem.2016.09.021
issn: 1879-0895
Appears in Collections:(CFMAC-IFF) Artículos
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