A model of carbon ion interactions in water using the classical trajectory Monte Carlo method
2011 (English)In: International Journal of Radiation Biology, ISSN 0955-3002, E-ISSN 1362-3095, Vol. 143, no 2-4, 152-155 p.Article in journal (Refereed) Published
In this paper, model calculations for interactions of C6+ of energies from 1 keV u−1 to 1 MeV u−1 in water are presented. The calculations were carried out using the classical trajectory Monte Carlo method, taking into account the dynamic screening of the target core. The total cross sections (TCS) for electron capture and ionisation, and the singly and doubly differential cross sections (SDCS and DDCS) for ionisation were calculated for the five potential energy levels of the water molecule. The peaks in the DDCS for the electron capture to continuum and for the binary-encounter collision were obtained for 500-keV u−1 carbon ions. The calculated SDCS agree reasonably well with the z2 scaled proton data for 500 keV u−1 and 1 MeV u−1 projectiles, but a large deviation of up to 8-folds was observed for 100-keV u−1 projectiles. The TCS for ionisation are in agreement with the values calculated from the first born approximation (FBA) at the highest energy region investigated, but become smaller than the values from the FBA at the lower-energy region.
Place, publisher, year, edition, pages
2011. Vol. 143, no 2-4, 152-155 p.
Carbon ions, charge transfer, interaction cross sections, classical trajectory Monte Carlo (CTMC)
Research subject Medical Radiation Physics
IdentifiersURN: urn:nbn:se:su:diva-81459DOI: 10.1093/rpd/ncq395ISI: 000288022300005OAI: oai:DiVA.org:su-81459DiVA: diva2:561740