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首页> 外文期刊>Physical review >Interaction potentials for fast atoms in front of Al surfaces probed by rainbow scattering
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Interaction potentials for fast atoms in front of Al surfaces probed by rainbow scattering

机译：彩虹散射探测铝表面前快速原子的相互作用势

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摘要

Rainbow scattering for grazing-angle incidence of atoms at surfaces along low-indexed channeling directions provides a sensitive probe of quasistatic atom-surface potentials. The dependence of the rainbow angle on the kinetic energy for the projectile motion perpendicular to the surface, E_⊥, varies with the electronic structure of the projectile as well as the crystallographic face of the aluminum surface. Comparison between experiment and classical Monte Carlo trajectory simulations demonstrates that the superposition of binary atom-atom potentials fails to adequately represent the equipotential surfaces. Ab initio atom-surface potentials based on density-functional theory are required to reach satisfactory agreement with experiment.%P. Tiwald;A. Schueller;H. Winter;K. Toekesi;F. Aigner;S. Graefe;C. Lemell;J. Burgdoerfer;
机译：沿低折射率通道方向的表面上原子的掠射角入射的彩虹散射为准静态原子表面势提供了灵敏的探针。垂直于弹丸运动的彩虹角对动能的依赖关系E_⊥随弹丸的电子结构以及铝表面的结晶面而变化。实验与经典蒙特卡洛轨迹模拟之间的比较表明，二元原子原子原子势的叠加不能充分表示等势面。需要基于密度泛函理论的从头算原子表面电位才能与实验达成令人满意的协议。％P。蒂瓦尔德; A。舒勒; H。冬季; K。 Toekesi; F。艾格纳; S。格拉夫; C。 Lemell; J。 Burgdoerfer;

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  • 来源
    《Physical review》 |2010年第12期|p.125453.1-125453.11|共11页
  • 作者

    P. Tiwald; A. Schueller; H. Winter; K. Toekesi; F. Aigner; S. Graefe; C. Lemell; J. Burgdoerfer;

  • 作者单位

    Institute for Theoretical Physics, Vienna University of Technology, Wiedner Hauptstrasse 8.10, A.1040 Vienna, Austria, EU;

    rnInstitut fuer Physik, Humboldt-Universitaet zu Berlin, Newtonstr. 15, D.12489 Berlin-Adlershof Germany, EU;

    rnInstitut fuer Physik, Humboldt-Universitaet zu Berlin, Newtonstr. 15, D.12489 Berlin-Adlershof Germany, EU;

    rnInstitute of Nuclear Research of the Hungarian Academy of Sciences (ATOMKI), P.O. Box 51, H-4001 Debrecen, Hungary, EU;

    rnInstitute for Theoretical Physics, Vienna University of Technology, Wiedner Hauptstrasse 8.10, A.1040 Vienna, Austria, EU;

    rnInstitute for Theoretical Physics, Vienna University of Technology, Wiedner Hauptstrasse 8.10, A.1040 Vienna, Austria, EU;

    rnInstitute for Theoretical Physics, Vienna University of Technology, Wiedner Hauptstrasse 8.10, A.1040 Vienna, Austria, EU;

    rnInstitute for Theoretical Physics, Vienna University of Technology, Wiedner Hauptstrasse 8.10, A.1040 Vienna, Austria, EU;

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  • 关键词

    atomic, molecular, and ion beam impact and interactions with surfaces; interatomic potentials and forces;

    机译：原子;分子和离子束的撞击以及与表面的相互作用;原子间势和力;

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