Energy deposition by protons and alpha particles in spherical sites of nanometer to micrometer diameter |
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Authors: | P. Olko J. Booz |
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Affiliation: | (1) Institut für Medizin, KFA Jülich GmbH, Postfach 1913, D-5170 Jülich;, Federal Republic of Germany |
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Abstract: | Summary 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.On leave from the Institute of Nuclear Physics, ul. Radzikowskiego 152, PL-31342 Kraków, Poland |
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