Electronic excitation during sputtering of silver atoms

被引：26

作者：

Berthold, W

Wucher, A

机构：

[1] Fachbereich Physik, Universität Kaiserslautern, Kaiserslautern

来源：

PHYSICAL REVIEW LETTERS | 1996年 / 76卷 / 12期

关键词：

D O I：

10.1103/PhysRevLett.76.2181

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The formation of metastable excited atoms during ion sputtering of polycrystalline silver was investigated by resonant laser postionization and time-of-flight mass spectrometry. It is shown that the metastable 4d(9)5s(2) D-2(5/2) state with an excitation energy of 3.75 eV is populated with a surprisingly high probability of several percent with respect to the ground state. The velocity distribution of the metastable atoms is found to fall off more steeply towards high emission velocities than that of the ground state atoms, thus indicating a new excitation mechanism of the sputtered silver atoms.

引用

页码：2181 / 2184

页数：4

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