Title :
Focusing Effect in Concave Cathode Model Using Computer Simulation
Author :
Choi, Hae Young ; Kim, Jong Uk
Author_Institution :
Electrofusion Technol. Res. Div., Korea Electrotechnol. Res. Inst., Ansan
Abstract :
It is well known that carbon nanotube (CNT) is an excellent electron field emitter. Because of its merits, CNTs have been applied recently for X-ray source for imaging. In X-ray imaging, both the emission current and the spot size of the electron beam are crucial. To fulfill these, a concave cathode structure is proposed as an alternative, and the simulation results based on the trajectories of time of flight of the electron beam are presented.
Keywords :
carbon nanotubes; cathodes; electron beams; electron field emission; C; X-ray imaging; X-ray source; carbon nanotube; computer simulation; concave cathode model; electron beam; electron field emitter; emission current; focusing effect; spot size; Anodes; Cathodes; Computer simulation; Electron beams; Electron emission; Electron guns; Electron sources; Electron tubes; Focusing; X-ray imaging; CNT emitter; concave cathode; electron beam; x-ray source;
Journal_Title :
Plasma Science, IEEE Transactions on
DOI :
10.1109/TPS.2008.924456
