title: Preliminary Investigation of Microdosimetric Track Structure Physics Models in Geant4-DNA and RITRACKS.
abstract: The major differences between the physics models in Geant4-DNA and RITRACKS Monte Carlo packages are investigated. Proton and electron ionisation interactions and electron excitation interactions in water are investigated in the current work. While these packages use similar semiempirical physics models for inelastic cross-sections, the implementation of these models is demonstrated to be significantly different. This is demonstrated in a simple Monte Carlo simulation designed to identify differences in interaction cross-sections.
authors.affiliation: Royal Adelaide Hospital, North Terrace, Adelaide, SA 5000, Australia.
authors.forename: Michael
authors.identifier: 0000-0002-3862-2644
authors.initials: M
authors.lastname: Douglass
authors.affiliation: Royal Adelaide Hospital, North Terrace, Adelaide, SA 5000, Australia.
authors.forename: Scott
authors.identifier: 0000-0002-3422-9108
authors.initials: S
authors.lastname: Penfold
authors.affiliation: Royal Adelaide Hospital, North Terrace, Adelaide, SA 5000, Australia.
authors.forename: Eva
authors.initials: E
authors.lastname: Bezak
mesh_terms: D000465:Algorithms; D003198:Computer Simulation; D004247:DNA / Q000737:chemistry*; D004249:DNA Damage / Q000528:radiation effects; D004583:Electrons; D020450:Heavy Ions; D006801:Humans; D007477:Ions; D009010:Monte Carlo Method; D011522:Protons; D011853:Radiobiology; D011874:Radiometry / Q000295:instrumentation* / Q000379:methods*; D012984:Software; D014867:Water / Q000737:chemistry
chemical_list: D007477:Ions; D011522:Protons; D014867:Water; D004247:DNA