Elastic scattering of low-energy electron in liquid water and its track structure simulation

The simulation of the track structure of low-energy electrons in liquid water is of essential importance for study of DNAhttp://www.cusabio.com/ damage induced by radiations, and it is mainly attributed to the calculations of the elastic and inelastic scattering events of the electrons in liquid water. In this work, for the elastic scattering of low-energy electrons (T≤10keV) in liquid water, when electron energy is lower than 50 eV, Champion model is used, which is based on the partial-wave method solving Schr?dinger equation and takes into account the phase effect of liquid water. In addition, a mean elastic cross-section based on the Mott model is adopted for energies above 50eV. The electron elastic cross sections calculated by using the present approach are in good agreement with the reported experiments and other theoretical calculations over the energy range of T≤10keV. What's more, the optical-data model developed by Emfietzoglou et al. on the basis of dielectric response theory is applied for describing the inelastic interactions of low-energy electrons with liquid water. Using the elastic and inelastic cross sections mentioned above, a Monte Carlo method (event by event) of simulating the track structure of low-energy electron in liquid water is established, and the spatial distributions of both inelastic scattering events and energy depositions in liquid water are calculated and compared with other theoretical calculations. The results show that the present method can provide a more reliable track structure of low-energy electron in liquid water for the study of DNAhttp://www.cusabio.com/Recombinant-Protein/Recombinant-human-Target-of-rapamycin-complex-2-subunit-MAPKAP1-11089635.html damages induced by radiations.