Open AccessNumerical simulation and study of three-dimensional thermal field emission
Author(s) -
Kai Peng,
Dagang Liu
Publication year - 2012
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
ISSN - 1000-3290
DOI - 10.7498/aps.61.121301
Subject(s) - thermionic emission , field electron emission , thermal emission , wedge (geometry) , field (mathematics) , current density , cathode , computational physics , thermal , physics , optics , electron , thermodynamics , electrical engineering , quantum mechanics , mathematics , pure mathematics , engineering
In this paper, we study the basic theory of field emission, thermionic emission and the thermal field emission, derive their current density formula, the initial distribution of the particles and their initial momentum. And then we achieve a field emission model, thermionic emission model and thermal field emission model on the basis of FDTD-PIC algorithm software. Finally, we verify its correctness using a wedge-shaped-cathode device.