Surface nanostructures induced by slow highly charged ions on CaF2 single crystals

被引：25

作者：

El-Said, A. S.

Meissl, W.

Simon, M. C.

Lopez-Urrutia, J. R. Crespo

Gebeshuber, I. C.

Lang, M.

Winter, Hp.

Ullrich, J.

Aumayr, F. ^{[1
]}

机构：

[1] Vienna Univ Technol, Inst Allgemeine Phys, A-1040 Vienna, Austria

[2] Max Planck Inst Kernphys, D-69029 Heidelberg, Germany

[3] Gesell Schwerionenforsch mbH, D-64291 Darmstadt, Germany

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS | 2007年 / 256卷 / 01期

基金：

奥地利科学基金会;

关键词：

D O I：

10.1016/j.nimb.2006.12.140

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

We present first results on the generation of surface nanostuctures by slow HCI on cleaved CaF2 (111) surfaces. The CaF, single crystals were irradiated with slow (v << 1 a.u.) Xe44+ HCI from the Heidelberg-EBIT. Like for other ionic fluoride single crystals, ion-induced surface structures in CaF2 are known to be stable in atmospheric conditions at room temperature. After irradiation the crystals were investigated by scanning force microscopy. Topographic images reveal the generation of nanometric hillocks protruding from the surface. The number of hillocks per unit area is in agreement with the applied ion fluence. A discussion of the role of the potential energy as well as a comparison with observations for swift heavy ion irradiations of CaF2 single crystals are presented. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：346 / 349

页数：4

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