https://doi.org/10.1140/epjd/e2010-00212-7
Radial dose distribution from carbon ion incident on liquid water
1
Frankfurt Institute for Advanced Studies
Ruth-Moufang-Str. 1, 60438 Frankfurt am Main, Germany
2
Department
of Physics, Oakland University, Rochester, Michigan, 48309, USA
Corresponding author: a scifoni@fias.uni-frankfurt.de
Received:
8
June
2010
Revised:
12
July
2010
Published online:
6
August
2010
We report calculations of the radial dose deposited along carbon-ion tracks in liquid water using different techniques depending on the energy range of secondary electrons. The models are developed in relation with the experimental data on electron penetration lengths. For electrons with energies higher than 45 eV, we use the Katz model. However, the main focus is on the low-energy electrons, which are largely responsible for DNA damage within 10 nm from the tracks. For these electrons, the dose calculation is based on their random walk behaviour. The results of this combined approach are compared to experimental measurements. Contributions to the deposited energy by electrons of different ranges of energy are discussed.
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2010
