Track-structure simulation mode of low energy electrons for nanoscale spatial resolution

Kai, Takeshi   ; Sato, Tatsuhiko   

When applying a general purpose particle transport simulation code such as PHITS to the study of biological body influence by radiation exposure, it is important to evaluate energy deposition (dose) for organ size, and to simulate precisely radiation interaction in DNA size (nanoscale) because low energy secondary electrons, which become an importance for chemical reaction process after energy deposition, have been included some unknown factors. To clear the problem, we developed track structure simulation mode to make behavior calculation of the low energy electron in arbitrary 3-D systems and various materials possible. Various application studies involved in microscopic radiation interaction such as DNA damage simulations will be expected using this simulation mode implemented below PHITS ver.2.93.