Title :
“Much ado about nothing”: Electron sources and transport in vacuum
Author :
Jensen, Kevin L.
Author_Institution :
Naval Res. Lab., Washington, DC, USA
Abstract :
How electron emission is generated from photo, secondary, field and thermionic sources affects their vacuum transport characteristics and therefore their utility for differing Vacuum Electronic applications. Complications associated with emission processes will be related to desirable features of the beams produced in terms of current density, lifetime, space charge, beam halo, emittance, and response time, as well as limitations imposed by the emission mechanisms.
Keywords :
current density; electron field emission; photoemission; secondary electron emission; thermionic electron emission; vacuum microelectronics; beam halo; current density; field electron emission; photoelectron emission; secondary electron emission; space charge; thermionic electron emission; vacuum electronic application; vacuum transport characteristic; Cathodes; Current density; Laser beams; Scattering; Space charge; Surface treatment; Thermionic emission; Electron Beams; Electron Emission; Emittance; Space Charge; Vacuum Electronics;
Conference_Titel :
Vacuum Electron Sources Conference (IVESC), 2012 IEEE Ninth International
Conference_Location :
Monterey, CA
Print_ISBN :
978-1-4673-0368-2
DOI :
10.1109/IVESC.2012.6264157
