Evidence against the "Coulomb explosion" model for desorption from insulator surfaces by slow highly charged ions

被引：9
|
作者：
Aumayr, F
Burgdörfer, J
Hayderer, G
Varga, P
Winter, HP
机构：
[1] Vienna Univ Technol, Inst Allgemeine Phys, A-1040 Vienna, Austria
[2] Vienna Univ Technol, Inst Theoret Phys, A-1040 Vienna, Austria
来源：
PHYSICA SCRIPTA | 1999年 / T80B卷
关键词：
D O I：
10.1238/Physica.Topical.080a00240
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The "Coulomb explosion" model has been frequently invoked to explain that HCI induced sputtering- and secondary ion emission yields for certain (insulating) target surfaces dramatically increase with projectile charge state. Based on available experimental results and new theoretical estimates we will present evidence that "Coulomb explosion" can be ruled out as a dominant mechanism for potential sputtering of insulating surfaces, whereas all experimental features are found to be consistent with a model involving defect-mediated desorption.
引用
收藏
页码：240 / 242
页数：3
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