Radial dose distribution from carbon ion incident on liquid water |
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Authors: | E Scifoni E Surdutovich and A V Solov’yov |
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Institution: | (1) Gesellschaft für Schwerionenforschung (GSI), Planckstrasse 1, 64291 Darmstadt, Germany |
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Abstract: | 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. |
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Keywords: | |
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