Title :
Comparison of injection algorithms for electron beam simulation by particle-in-cell method
Author :
Nikiforov, K. ; Andrievskiy, Dmitry
Author_Institution :
St.-Peterburg State Univ., St. Petersburg, Russia
fDate :
June 30 2014-July 4 2014
Abstract :
Algorithms of macroparticles injection into particle-in-cell computational domain for electrons beam simulation are studied. Models for Fawler-Nordheim and Gauss laws as well as constant current density injection are compared. The geometry of coaxial-cylinders diode for test-aimed device is used. In space charge limited regime Gauss law and constant current density injection are similar in resulted beam dynamics. The Fawler-Nordheim injection function, implemented in XOOPIC, is more appropriate for simulation of field emission generator of electrons beam both in cases of space charge limited and unlimited regimes.
Keywords :
current density; electron beam effects; electron field emission; space-charge-limited conduction; Fawler-Nordheim injection function; Gauss laws; coaxial-cylinder diode geometry; constant current density injection; electron beam simulation; electron field emission generator simulation; electrons beam dynamics; macroparticle injection algorithms; particle-in-cell computational domain; space charge limited constant current density injection; test-aimed device; Computational modeling; Current density; Electron beams; Mathematical model; Numerical models; Object oriented modeling; Space charge;
Conference_Titel :
Beam Dynamics and Optimization (BDO), 2014 20th International Workshop on
Conference_Location :
St. Petersburg
Print_ISBN :
978-1-4799-5319-6
DOI :
10.1109/BDO.2014.6890057
