Study of nano-scale surface modification processes induced by slow highly charged ion collisions

研究了高取向热解石墨(HOPG)慢速高电荷态离子碰撞引起的纳米级表面修饰过程。离子诱导的丘状直径随着入射离子势能的增加而增大。在Bi70和Bi75之间，诱导修饰的形状从丘状变成了火山口状。在梯度入射实验中，我们观察到由入射离子引起的有趣的表面修饰，即不对称的小丘和几个小丘。

We have studied about nano-scale surface modification processes induced by slow highly charged ion collisions on highly oriented pyrolytic graphite (HOPG). The diameter of hillock induced by an ion increases with increasing potential energy of incident ions. The shape of induced modifications has changed from a hillock-like to a caldera-like between Bi70+ and Bi75+. In gradient incidence experiments, we observed interesting surface modifications that are asymmetric hillocks and several hillocks induced by an incident ion.