高电荷态离子与导电和绝缘表面碰撞的扩展过势垒模型
Extended Classical Over-Barrier Model for Collisions of Highly Charged Ions with Conducting and Insulating Surfaces
摘要：
我们扩展了经典的过势垒模型，模拟了高电荷态离子在掠入射下与导电和绝缘表面相互作用的中和动力学。我们的计算是基于共振和俄歇跃迁的简单模型速率。我们包括目标的介电响应所造成的影响，绝缘体，局部表面电荷。讨论了从导电和绝缘靶到离子的电荷转移过程的特性偏差。我们发现很好的协议与先前发表的实验数据的图像能量增益的各种高电荷离子撞击金，铝，氟化锂和KI晶体。
英文摘要：
We have extended the classical over-barrier model to simulate the neutralization dynamics of highly charged ions interacting under grazing incidence with conducting and insulating surfaces. Our calculations are based on simple model rates for resonant and Auger transitions. We include effects caused by the dielectric response of the target and, for insulators, localized surface charges. Characteristic deviations regarding the charge transfer processes from conducting and insulating targets to the ion are discussed. We find good agreement with previously published experimental data for the image energy gain of a variety of highly charged ions impinging on Au, Al, LiF and KI crystals.
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