Open AccessОсобенности полевой десорбции натрия и цезия с поверхности науглероженного рениевого полевого эмиттера
Author(s) -
Д.П. Бернацкий,
В.Г. Павлов
Publication year - 2020
Publication title -
pisʹma v žurnal tehničeskoj fiziki
Language(s) - English
Resource type - Journals
eISSN - 1726-7471
pISSN - 0320-0116
DOI - 10.21883/pjtf.2020.13.49589.18321
Subject(s) - rhenium , common emitter , field ion microscope , caesium , field electron emission , field desorption , materials science , ion , alkali metal , atomic physics , analytical chemistry (journal) , ionization , intercalation (chemistry) , chemistry , inorganic chemistry , optoelectronics , electron , physics , organic chemistry , chromatography , quantum mechanics , metallurgy
The field desorption of sodium and cesium atoms from a rhenium field emitter pre-carbonized in benzene vapor was studied using field emission microscopy. A difference was found in the dependence of the ion current Na and Cs on the voltage applied to the field emitter. The difference in the dependences of the ion current is explained by the formation of multilayer graphene on the crystal surface of the rhenium field emitter in the regions of low-index faces and its intercalation by alkali metal atoms with different ionization potentials and different atomic and ion radii.