Open AccessДесорбция атомов калия, стимулированная электронным облучением системы K/K-=SUB=-x-=/SUB=-Au-=SUB=-y-=/SUB=-
Author(s) -
Ю.А. Кузнецов,
М.Н. Лапушкин
Publication year - 2020
Publication title -
fizika tverdogo tela
Language(s) - English
Resource type - Journals
eISSN - 1726-7498
pISSN - 0367-3294
DOI - 10.21883/ftt.2020.11.50075.130
Subject(s) - desorption , tungsten , excitation , electron , potassium , atomic physics , materials science , electron excitation , analytical chemistry (journal) , substrate (aquarium) , resonance (particle physics) , chemistry , adsorption , physics , oceanography , quantum mechanics , chromatography , metallurgy , geology
Electron-stimulated desorption of K atoms from the surface of potassium atoms on KxAuy was discovered. A KxAuy layer on a tungsten substrate with a gold film deposited on it with a thickness of not more than 5 atomic layers of gold. A quasi-resonant dependence on the energy of the exciting electrons of the electron-stimulated desorption was found. The quasi-resonance dependence is due to the excitation of core levels of Au 5p3/2 and Au 5p1/2. A model of electron-stimulated desorption of K atoms in the K/KxAuy system is proposed that adequately describes the processes that occur during electron-stimulated desorption of potassium atoms. The processes of electron-stimulated desorption excitation of potassium atoms occur at the K/KxAuy interface.