Abstract
A simulation model is developed to study the movement of secondary electrons (SEs) (which are ionized by incident heavy particle impacts) and radial dose to elucidate the biological effect of heavy particles. This model has been proposed by using recent developments in science and technology such as (i) tremendous advancements in computers, (ii) new facts discovered from measurements, and (iii) systematic arrangement of atomic and molecular data. A strong electric field is created near the trajectory of the incident particle. SEs, which are captured by this electric field, form plasma. By considering the influence of plasma on radial dose, it is expected that the radial dose distribution proposed here becomes closer to reality than conventional ones. Thermal expansion due to high values of radial doses is also discussed.
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