IDENTIFICATION OF THE MECHANISM FOR KINETIC EMISSION IN KEV PROTON CU(110) COLLISIONS

被引：20

作者：

SPIERINGS, G ^{[1
]}

URAZGILDIN, I ^{[1
]}

VANEMMICHOVEN, PAZ ^{[1
]}

NIEHAUS, A ^{[1
]}

机构：

[1] MOSCOW MV LOMONOSOV STATE UNIV, DEPT PHYS, MOSCOW 119899, RUSSIA

来源：

PHYSICAL REVIEW LETTERS | 1995年 / 74卷 / 22期

关键词：

D O I：

10.1103/PhysRevLett.74.4543

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Absolute electron spectra arising from grazing collisions of keV protons with a single-crystal Cu(110) surface are reported. From the experimental data, and from a comparison with known ionization cross sections in gas phase collisions, it is concluded that the mechanism responsible for kinetic emission is the perturbation of localized electrons during several "distant collisions" of the neutralized H atom in its ground state. For the first time an approximate theoretical description for kinetic emission formulated for keV collision energies is found to be consistent with the experimental data. © 1995 The American Physical Society.

引用

页码：4543 / 4546

页数：4

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