Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Atomic displacement damage energy model up to high recoil energy
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms ( IF 1.4 ) Pub Date : 2023-01-17 , DOI: 10.1016/j.nimb.2023.01.007
Shengli Chen

Current analytical displacement damage models are derived for recoil energy below 24.9AZ4/3 keV. The present work studies the damage energy beyond this theoretical limit using SRIM Full Cascade (FC) and DART calculations. Notably, the three damage energies computed with different methods from the same SRIM simulation are not equal, whereas they are believed to be the same in principle. The method of directly subtracting the ionization energy from total recoil energy is recommended for both FC and Quick Calculation (QC) options. It is also observed that the damage energy seems to unphysically depend on the density of monatomic material in SRIM FC. While the classical analytical models imply the saturated damage energy for high recoil energy, this saturation is not observed in SRIM FC nor in the numerical solution of the Lindhard equation using reasonable electronic stopping powers.



中文翻译:

高达高反冲能量的原子位移损伤能量模型

当前分析位移损伤模型是针对低于 24.9 AZ 4/3的反冲能量推导出来的千伏。目前的工作使用 SRIM 全级联 (FC) 和 DART 计算研究了超出该理论极限的损伤能量。值得注意的是,从同一 SRIM 模拟中使用不同方法计算出的三种损伤能量并不相等,但原则上认为它们是相同的。对于 FC 和快速计算 (QC) 选项,建议使用直接从总反冲能量中减去电离能的方法。还观察到损伤能量似乎非物理地取决于 SRIM FC 中单原子材料的密度。虽然经典分析模型暗示了高反冲能量的饱和损伤能量,但在 SRIM FC 和使用合理电子停止本领的林德哈德方程的数值解中都没有观察到这种饱和。

更新日期:2023-01-18
down
wechat
bug