ELECTRON-EMISSION YIELD OF AL, CU, AND AU FOR THE IMPACT OF SWIFT BARE LIGHT-IONS

被引：26

作者：

BENKA, O

SCHINNER, A

FINK, T

PFAFFENLEHNER, M

机构：

[1] Institut für Experimentalphysik, Johannes Kepler Universität, A-4040 Linz

来源：

PHYSICAL REVIEW A | 1995年 / 52卷 / 05期

关键词：

D O I：

10.1103/PhysRevA.52.3959

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The electron emission yield induced by mega-electron-volt H+, He2+, Li3+, B5+, and C6+ impact on aluminum, copper, and gold targets was measured. We found a significant deviation of the results from a simple proportionality to the stopping power, especially for heavier ions and low projectile velocities. Using a slightly modified model by J. E. Borovsky and D. M. Suszcynsky [Phys. Rev. A 43, 1433 (1991)] our experiments could be well represented. In this model the collective electric field generated along the projectile's path was taken into account. Consequently, the positive ion channel appears to be the dominant mechanism that leads beyond a projectile-independent yield-to-stopping power ratio.

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收藏

页码：3959 / 3965

页数：7

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