Emission Of X-ray And Electrons During Deexciting Of Hollow Ar Atoms At A Gold Surface

Since hollow atoms have a very short lifetime when they are formed during the interaction of highly charged ions with solid surfaces, their detailed decay processes cannot be accurately analyzed. However, they can be studied by looking at the emission of slow electrons, soft x-ray and fast Auger electrons.The existing physics models have been handpicked and the損romotion loss? model has been improved. The interaction of low-energy highly charged Ar^q+ ions (q = 5--17) with a polycrystalline gold has been investigated using the Monte-Carlo method. By tracking the formation and decay process of the hollow atoms, the dependences of slow electrons yield on the initial charge state and the incidencevelocity of the ion have been investigated. At the same time, the K_αx-ray KL^xsatellite spectra emitted from Ar hollow atoms during the highly charged Ar¹⁷⁺ ions impinging on a gold surface has been simulated. Both of the above simulation results are in good agreement with previously published experimental data. The physics mechanisms of these phenomena have been described by analyzing the simulation results deeply.This thesis is very helpful for understanding the formation and decay process of hollow atoms during the highly charged ions interact with a metal surface in a microcosmic point of view. Also, this is a theoretic groundwork for the application of highly charged ions.