Effects of the atomic level shift in the Auger neutralization rates of noble metal surfaces

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS

卷:315

Article

Monreal, R. C.¹  Goebl, D.²  Primetzhofer, D.²  Bauer, P.² 

[1] Univ Autonoma Madrid, Dept Fis Teor, Mat Condensada & Condensed Matter Phys Ctr IFIMAC, E-28049 Madrid, Spain

[2] Johannes Kepler Univ Linz, Inst Expt Phys, Abt Atom & Oberflachenphys, A-4040 Linz, Austria

关键词: Charge exchange;    Auger neutralization;    LEIS;    Noble metals;   

DOI  :  10.1016/j.nimb.2013.03.031

来源: Elsevier

【 摘 要 】

In this work we compare characteristics of Auger neutralization of He ions at noble metal and free-electron metal surfaces. For noble metals, we find that the position of the energy level of He with respect to the Fermi level has a non-negligible influence on the values of the calculated Auger rates through the evaluation of the surface dielectric susceptibility. We conclude that even though our calculated rates are accurate, further theoretical effort is needed to obtain realistic values of the energy level of He in front of these surfaces. (C) 2013 Elsevier B.V. All rights reserved.

【 授权许可】

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