https://doi.org/10.1140/epjd/e2015-60242-1
Regular Article
Transport of secondary electrons and reactive species in ion tracks*
1 Department of Physics, Oakland
University, Rochester, Michigan
48309,
USA
2 MBN Research Center,
60438
Frankfurt am Main,
Germany
3 On leave from A.F. Ioffe Physical
Technical Institute, 194021
St. Petersburg, Russian
Federation
a e-mail: surdutov@oakland.edu
Received:
20
April
2015
Received in final form:
23
June
2015
Published online:
6
August
2015
The transport of reactive species brought about by ions traversing tissue-like medium is analysed analytically. Secondary electrons ejected by ions are capable of ionizing other molecules; the transport of these generations of electrons is studied using the random walk approximation until these electrons remain ballistic. Then, the distribution of solvated electrons produced as a result of interaction of low-energy electrons with water molecules is obtained. The radial distribution of energy loss by ions and secondary electrons to the medium yields the initial radial dose distribution, which can be used as initial conditions for the predicted shock waves. The formation, diffusion, and chemical evolution of hydroxyl radicals in liquid water are studied as well.
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag 2015