DocumentCode :
1077157
Title :
Generation of High-Current-Density Sheet Electron Beams
Author :
Li, Lili ; Wang, Jinshu ; Wang, Yiman
Author_Institution :
Sch. of Mater. Sci. & Eng., Beijing Univ. of Technol., Beijing
Volume :
30
Issue :
3
fYear :
2009
fDate :
3/1/2009 12:00:00 AM
Firstpage :
228
Lastpage :
230
Abstract :
High-current-density sheet beams directly generated from scandia-doped dispenser cathodes have been studied for application to vacuum electron devices like terahertz sources. Rectangular beams with current densities of over 50 A/cm2 have been developed and demonstrated to maintain for several hundred hours with the cathode operating stably at 950degCb. Beam forming structures have been investigated and optimized by means of beam profile simulation and confirmed by test results.
Keywords :
backward wave oscillators; current density; electron beams; backward-wave oscillators; beam forming structures; high-current-density sheet electron beams; rectangular beams; scandia-doped dispenser cathodes; terahertz sources; vacuum electron devices; Electron beam; electron sources; scandium; terahertz radiation; thermionic emission;
fLanguage :
English
Journal_Title :
Electron Device Letters, IEEE
Publisher :
ieee
ISSN :
0741-3106
Type :
jour
DOI :
10.1109/LED.2008.2010783
Filename :
4757298
Link To Document :
https://search.ricest.ac.ir/dl/search/defaultta.aspx?DTC=49&DC=1077157
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