Open AccessField emission cell with a W-cathode formed by local ion-stimulated deposition
Author(s) -
Nikita Shandyba,
A. S. Kolomiytsev,
Ivan Panchenko,
I. L. Jityaev
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1697/1/012056
Subject(s) - electric field , common emitter , field electron emission , tungsten , materials science , radius , cathode , deposition (geology) , field (mathematics) , field strength , atomic physics , ion , analytical chemistry (journal) , molecular physics , optoelectronics , chemistry , electron , physics , magnetic field , paleontology , mathematics , quantum mechanics , sediment , pure mathematics , computer security , organic chemistry , chromatography , computer science , metallurgy , biology
This article presents the results of a theoretical study of a field emission cell with a vertically oriented emitter. The field emission cell was formed based on a combination of etched methods with a Ga + focused ion beam and local ion-stimulated tungsten deposition. The influence of the geometric parameters of the field emission cell on the electric field strength at the emitter top is estimated. It was found that a decrease in the rounding-off radius of the emitter top from 150 to 5 nm leads to an increase in the electric field strength by more than an order of magnitude from 1.28 × 10 6 to 16 × 10 6 V/cm. A decrease in the diameter of the field emission cell from 2.5 μm to 900 nm contributes to an increase in the electric field strength by 33.6 % from 3.04 × 10 6 to 4.58 × 10 6 V/cm.