Dynamic model of the threshold displacement energy

7th International Conference Radiation-thermal Effects and Processes in Inorganic Materials

材料科学;物理学

Kupchishin, A.I.^1,2 ; Kupchishin, A.A.^1

Abay Kazakh National Pedagogical University, 13 Dostyk, Almaty, Kazakhstan^1

Al-Farabi Kazakh National University, 71 al-Farabi ave., Almaty, Kazakhstan^2

关键词: Energy transfer coefficients;    Formation energies;    General expression;    Interstitial atoms;    Primary particles;    Threshold displacement energy;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/168/1/012014/pdf
DOI  :  10.1088/1757-899X/168/1/012014

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

A dynamic (cascade-probability) model for calculating the threshold displacement energy of knocked-out atoms (Ed) 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 Efand vacancies Ei, on the energy transfer coefficient α 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.