Formation of negative ions in grazing scattering of neutral atoms from alkali-metal halide (100) surfaces

Formation of negative ions in grazing scattering of neutral atoms from alkali-metal halide (100) surfaces
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碱金属卤化物 (100) 表面中性原子掠散射中负离子的形成

DOI:
10.1103/physreva.85.014901
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发表时间:
2012-01
期刊:
影响因子:
2.9
通讯作者:
Chen, Ximeng
Chen, Ximeng
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
Zhou, Wang;Li, Yuan;Zhao, Lei;Chen, Ximeng

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相似文献

Demkov模型不能解释原子在相对较高的速度下从绝缘体表面掠射时负离子的形成,因为该模型没有包括电子脱离过程。在这项工作中,众所周知的电子通过排斥库仑势垒的量子隧道效应被用来描述电子从形成的负离子中分离出来。这两个模型的组合在整个撞击速度范围内与实验数据吻合得很好。
The Demkov model fails to explain the formation of negative ions in grazing scattering of atoms from insulator surfaces at relatively high velocities, since the electron detachment process is not included in the model. In this work, the well-known quantum tunneling effect for electrons through the repulsive Coulomb barrier has been proposed to describe electron detachment from the formed negative ions. The combination of these two models results in excellent agreement with the experimental data in the overall impact velocity range.
DOI: 10.1016/b0-12-227410-5/00040-5
发表时间: 2003
期刊: --
影响因子: --
作者:
R. E. Johnson
通讯作者: R. E. Johnson