Microscopic behavior of low energy electron in condensed phase by a dynamic Monte Carlo method

Kai, Takeshi   

It is impossible to analyze radiation interaction in nano-scale by using particle transport codes such as PHITS because the code cannot simulate microscopic behavior of low energy electrons. We have developed a dynamic Monte Carlo code which can simulate the behavior. In this presentation, we explain the calculation methods of electron collision cross section included in the code as well as the electron behavior in water. We also show the calculated results for a primary electron transport and secondary electrons deceleration. From the results, we perform DNA damage prediction involved in the low energy electrons. We found novel complex DNA damage mechanism which induces radiation biological effect such as cell death or mutation. We also present an implementation of the code into PHITS and future plans for the functional extension of PHITS.