Strength of the interatomic potential derived from angular scans in LEIS

SURFACE SCIENCE

卷:602

Article

Primetzhofer, D.¹  Markin, S. N.¹  Draxler, M.¹  Beikler, R.²  Taglauer, E.²  Bauer, P.¹ 

[1] Johannes Kepler Univ Linz, Inst Expt Phys, A-4040 Linz, Austria

[2] Max Planck Inst Plasma Phys, EURATOM Assoc, D-85748 Garching, Germany

关键词: low energy ion scattering;    single crystal;    Cu(100);    screening length;    interaction potential;    Monte-Carlo simulations;    molecular dynamics simulations;   

DOI  :  10.1016/j.susc.2008.07.030

来源: Elsevier

【 摘 要 】

Angular scans were performed for a Cu(100) single crystal and He+ ions. The results were compared to MARLOWE, KALYPSO and FAN simulations to obtain information on the interaction potential. The influence of the used evaluation procedure on the deduced scattering potential was investigated. The scattering potential is found to be weaker than what is predicted by an uncorrected TFM potential. It was found that the use of a single screening correction factor is applicable in a wide range of impact parameters. It is further shown that selection of single scattering trajectories and a limitation of information depth to the surface layers is possible for neutral and charge integrated spectra. (C) 2008 Elsevier B.V. All rights reserved.

【 授权许可】

Free