Abstract
Collision cascades of thorium ions at 50, 100 and 150 eV in monocrystalline MgO have been investigated with the program MARLOWE which constructs the trajectory of the moving particle as a series of isolated binary collisions. Parametric study on the binding parameters has been performed to show their effect on the particle trajectories. Some computed events showed a focusing in the direction . These events are characterized by an initial energy value, energy loss in each stage of the chain and a definite number of collisions. These quantities, as calculated by MARLOWE (BCA), have been compared with the results of the hard-sphere collision approximation (HSCA).
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