Dynamics of low-energy electrons in liquid water with consideration of Coulomb interaction with positively charged water molecules induced by electron collision

Thermal equilibrium and prehydration processes of electrons injected into liquid water calculated by dynamic Monte Carlo method

“…Our code (Kai et al, 2014) comprises the calculation of electron dynamics with a Newtonian equation and a simulation of collisions between electrons and molecules with a Monte Carlo method.…”

Cross sections, stopping powers, and energy loss rates for rotational and phonon excitation processes in liquid water by electron impact

“…Thus, we suggest that the values reported in this study are valuable to precisely simulate the deceleration process of an electron in water. The simulation will provide predictions of the chemical structure of biomolecular damage specific to the deceleration process of electrons in liquid water (Kai et al, 2014;Boudaïffa et al, 2000;Michael and O'Neill, 2000;Wang et al, 2009;Sanche, 2009;Oka et al, 2012). Fig.…”

“…The deceleration process has thus far been studied using both theoretical and experimental approaches (Migus et al, 1987;Konovalov et al, 1988;Mozumder, 1988;Goulet and Jay-Gerin, 1988;Meesungnoen et al, 2002). Currently, programs for dynamical calculation of electrons in water have been developed to precisely calculate the spatial distribution of the electrons ejected by irradiation with various charged particles (Moribayashi, 2011;Kai et al, 2014). We have suggested that the spatial distribution of these electrons was significantly different from that of a subexcitation electron injected into water because of the effect of Coulomb fields of the parent cations (Kai et al, 2014).…”

“…Currently, programs for dynamical calculation of electrons in water have been developed to precisely calculate the spatial distribution of the electrons ejected by irradiation with various charged particles (Moribayashi, 2011;Kai et al, 2014). We have suggested that the spatial distribution of these electrons was significantly different from that of a subexcitation electron injected into water because of the effect of Coulomb fields of the parent cations (Kai et al, 2014). From that basis, we predicted that types of biomolecular damage could be modified via electron recapture by the cations.…”

“…To predict the chemical structure of biomolecular damage specific to the deceleration process of electrons in liquid water (Kai et al, 2014;Boudaïffa et al, 2000;Michael and O'Neill, 2000;Wang et al, 2009;Sanche, 2009;Oka et al, 2012), we establish values for the cross sections, stopping powers, and energy loss rates of electrons for liquid water assuming an optical approximation. The purpose of the present study is to calculate those quantities for electron impact in an energy region from 0.1 meV to 100 eV by considering the excitation processes of molecular rotation and phonon modes in the extremely low electron energy region with the aid of the dielectric functions recently obtained by Yada et al (2008).…”