Monte-Carlo calculations of radial dose and restricted-let for protons in water

Radiation Protection Dosimetry
D EmfietzoglouM Moscovitch

Abstract

A new Monte-Carlo code for event-by-event simulation of the transport of energetic non-relativistic protons (approximately 0.5-10 MeV) and all their secondary electrons (down to 1 Ry) in both the vapour and liquid phases of water is presented. A unified particle-water inelastic model for both phases of water has been developed based on experimental optical data and elements of the Bethe theory. The model applies to both electrons and heavy-charged particles and is particularly suitable for extension to other media of biological relevance (organic polymers, DNA, etc.). Condensed-phase effects are included in the liquid version (MC4L) by means of the dielectric functions which, essentially, substitute the oscillator-strength used in the vapour version (MC4V). The results in the form of radial dose distributions and spatially restricted linear energy transfer are presented and compared with the literature.

References

Dec 1, 1983·Physics in Medicine and Biology·G Harauz, F P Ottensmeyer
Jan 1, 1994·Radiation and Environmental Biophysics·J ChenH H Rossi
Mar 24, 1998·Physics in Medicine and Biology·G Grosswendt, W Y Baek
Aug 26, 1999·Radiation and Environmental Biophysics·F A CucinottaD T Goodhead
Aug 26, 1999·Radiation and Environmental Biophysics·W E Wilson, H Nikjoo
Mar 10, 2001·International Journal of Radiation Biology·S UeharaH Nikjoo

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