Computer simulation of ion beam penetration in amorphous target

摘要

The formalism for a Monte‐Carlo computer code using a liquid model is presented. One of the characteristic features of this program is a constant free flight path length between collisions and the other is the thoroughgoing usage of the fitting formula to the nuclear scattering cross section, minimum energy transfer, and free flight path shortening. This allows for a rapid and accurate assesment of an ion’s direction and energy loss resulting from nuclear collisions. For nuclear scattering, an approximation formula derived by Kalbitzer and Oetzmann was used and the results are compared with those obtained using the formula derived by Winterbon, Sigmund, and Sanders. Both results are compared with experiments, with the results obtained using gas‐like model and also with other well‐established programsmarloweandtrim.