Formation of extremely high current density LaB6 field emission arrays via e-beam deposition

2008 ◽  
Vol 93 (9) ◽  
pp. 093503 ◽  
Author(s):  
K. C. Qi ◽  
Z. L. Lin ◽  
W. B. Chen ◽  
G. C. Cao ◽  
J. B. Cheng ◽  
...  
1994 ◽  
Vol 349 ◽  
Author(s):  
B. H. Fishbine ◽  
C. J. Miglionico ◽  
K. E. Hackett ◽  
K. J. Hendricks

ABSTRACTBuckytubes are considered for high current density cold field emitter array electron sources. They may provide more stable, higher-brightness emission than existing cold field emitter arrays.


Author(s):  
David J. Smith ◽  
Pierre-Andre Bui ◽  
J. Darryl Michael ◽  
Steven C. Aceto ◽  
Kirk Marquard ◽  
...  

2007 ◽  
Vol 22 (22) ◽  
pp. 3784-3793 ◽  
Author(s):  
C. H. BOULWARE ◽  
J. D. JARVIS ◽  
H. L. ANDREWS ◽  
C. A. BRAU

At the tips of sharp needles, the surface electric field is enhanced by many orders of magnitude. This intensifies thermionic emission and photoemission of electrons through the Schottky effect, and reduces the effect of space charge. The increased current density improves the brightness of electron sources by orders of magnitude. In addition, at very high fields (>109 V/m ), field emission and photo-field emission produce very high current density. Arrays of needles can be used to achieve high total current.


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