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用加速电压５０ｋＶ、剂量为４×１０１７／ｃｍ２的铁离子注入单晶铜中，利用透射电子显微镜弱束成像技术研究了被注入材料的横截面样品，发现离子辐照引发被注入材料亚结构变化的深度远大于离子本身注入的深度，铁离子注入单晶铜中位错密度随注入深度的变化有两个峰值出现．其亚结构为多种位错组成的复杂位错组态，这种亚结构会使被注入材料具有相当于加工硬化的效果．探讨了离子注入材料中由辐照引发的加工硬化现象，即所谓的“长程效应”
With the accelerating voltage of 50kV, a dose of 4 × 1017 / cm2 of iron ions into the single crystal copper, the use of transmission electron microscopy weak beam imaging technology was injected into the cross-section of the sample was found that ionizing radiation was injected sub-structure material changes The depth is far greater than the depth of implantation of ions itself, the density of dislocation implanted with single crystal copper ion implantation with the injection depth has two peaks appear. Its substructure is a complex dislocation configuration composed of many kinds of dislocations, which will make the injected material have the equivalent of work hardening. The phenomenon of work-hardening induced by irradiation in ion-implanted materials is discussed, the so-called “long-range effect”