TIME SCALES FOR CHARGE EQUILIBRATION OF O-Q+ (3-LESS-THAN-OR-EQUAL-TO-Q-LESS-THAN-OR-EQUAL-TO-8) IONS DURING SURFACE-CHANNELING INTERACTIONS WITH AU(110)

被引：107

作者：

FOLKERTS, L ^{[1
]}

SCHIPPERS, S ^{[1
]}

ZEHNER, DM ^{[1
]}

MEYER, FW ^{[1
]}

机构：

[1] UNIV OSNABRUCK,D-49069 OSNABRUCK,GERMANY

来源：

PHYSICAL REVIEW LETTERS | 1995年 / 74卷 / 12期

关键词：

D O I：

10.1103/PhysRevLett.74.2204

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report on measurements of scattered projectile angular and charge state distributions for 3.75 keV/amu Oq+ (3q8) ions surface channeled along the 110 direction of a Au(110) single crystal target. Projectile trajectory calculations indicate that the projectiles spend less than 30 fs within 2 of the topmost Au surface layer. Nevertheless, almost complete charge equilibration is observed in the scattered projectile charge state distributions. It is concluded that, already at the target interface, strong screening effects are present which make possible direct capture to the projectile L and M shells in relatively large impact parameter collisions. © 1995 The American Physical Society.

引用

页码：2204 / 2207

页数：4

共 22 条

[11] SCATTERING OF LI+ FROM LEED CHARACTERIZED W(110) AND SI(111) SURFACES AT ENERGIES BETWEEN 2 AND 20 EV [J].