Open AccessЭлектронно-стимулированная десорбция атомов цезия с графена на иридии
Author(s) -
Ю.А. Кузнецов,
Е.В. Рутьков,
Н.Р. Галль
Publication year - 2018
Publication title -
pisʹma v žurnal tehničeskoj fiziki
Language(s) - English
Resource type - Journals
eISSN - 1726-7471
pISSN - 0320-0116
DOI - 10.21883/pjtf.2018.12.46298.17295
Subject(s) - nonmetal , graphene , materials science , substrate (aquarium) , desorption , caesium , atomic physics , iridium , electron , metal , analytical chemistry (journal) , ionization , chemistry , ion , adsorption , nanotechnology , inorganic chemistry , physics , biochemistry , oceanography , organic chemistry , quantum mechanics , chromatography , geology , metallurgy , catalysis
Electron-stimulated desorption (ESD) of cesium atoms from graphene on a metal (iridium) substrate has been directly observed for the first time using the time-of-flight technique with a surface-ionization detector. The appearance threshold of the yield of Cs atoms from the sample surface at 160 K was 20 eV. An additional ESD peak of Cs atoms was observed at an electron energy of 56 eV. The observed ESD of Cs atoms from graphene is related to the nonmetal nature of this carbon film on the metal substrate surface.