Dynamic model of the threshold displacement energy

A dynamic (cascade-probability) model for calculating the threshold displacement energy of knocked-out atoms (E-d) was proposed taking into account the influence of the instability zone (spontaneous recombination). General expression was recorded for Ed depending on the formation energy of interstitial atoms E-f and vacancies E on the energy transfer coefficient alpha and the number of interactions i needed to move the atom out of the instability zone. The parameters of primary particles were calculated. Comparison of calculations with experimental data gives a satisfactory agreement.