Abstract

The electron-stimulated desorption (ESD) of K atoms from the potassium layer on the K_xAu_y surface has been found. The K_xAu_y layer is formed at a tungsten substrate coated with a gold film with thickness no more five atomic layers. A quasi-resonant dependence of the K atom ESD yield on the energy of exciting electrons is observed. The quasi-resonant dependence is due to the excitation of Au 5p_3/2 and 5p_1/2 core levels. A model of K atom ESD in the K/K_xAu_y that adequately describes the processes occurring during ESD of K atoms is proposed. The processes of exciting K atom ESD are shown to take place in the K/K_xAu_y interface.

中文翻译：

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K / K x Au y系统电子辐射激发钾原子的解吸

摘要

已经发现了K _x Au _y表面上钾原子的电子激发解吸（ESD）。K _x Au _y层形成在涂有金膜的钨基板上，该金膜的厚度不超过五个原子层。观察到K原子ESD产量对激发电子能量的准谐振依赖性。准谐振依赖性归因于Au 5 p _3/2和5 p _1/2磁芯能级的激发。K / K _x Au _y中的K原子ESD模型提出了充分描述K原子ESD期间发生的过程的建议。激发K原子ESD的过程显示在K / K _x Au _y界面中。