Radiation and Environmental Biophysics

, Volume 29, Issue 1, pp 1–17 | Cite as

Energy deposition by protons and alpha particles in spherical sites of nanometer to micrometer diameter

  • P. Olko
  • J. Booz


Monte Carlo simulated proton- and alpha-particle tracks in water vapor were used to develop an analytical function for calculating number distributions of ionizations induced in spherical sites. For charged particles crossing the site, Fermi-like functions were used to approximate the ionization distributions. Ionization event distributions due to particles passing outside the site were approximated with an exponentially decreasing function. The function parameters were calculated for protons and alpha particles in the energy range 0.3–5.0 MeV/ amu and for site diameters of 1 to 1000 nm. The quality of fit obtained is very good for the particles, energy range and site diameters considered.


Water Vapor Analytical Function Charged Particle Energy Range Function Parameter 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Springer-Verlag 1990

Authors and Affiliations

  • P. Olko
    • 1
  • J. Booz
    • 1
  1. 1.Institut für MedizinJülich;Federal Republic of Germany

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