DocumentCode :
1111427
Title :
A synthesis of the Longo and Eng cathode emission models
Author :
Vaughan, Rodney
Author_Institution :
Litton Electron Devices Division, San Carlos, CA
Volume :
33
Issue :
11
fYear :
1986
fDate :
11/1/1986 12:00:00 AM
Firstpage :
1925
Lastpage :
1927
Abstract :
An 
th power generalization of Longo\´s roll-off curve equation is proposed. A method for finding the exponent from an experimental curve is given. Eng\´s model corresponds approximately to 
, Good electron guns have values in the 6 to 10 range. The use of n as a figure of merit for quality control is discussed. The construction for finding is shown to lead to a new formula for the work function.
th power generalization of Longo\´s roll-off curve equation is proposed. A method for finding the exponent from an experimental curve is given. Eng\´s model corresponds approximately to , Good electron guns have values in the 6 to 10 range. The use of n as a figure of merit for quality control is discussed. The construction for finding is shown to lead to a new formula for the work function.Keywords :
Cathodes; Current density; Electron devices; Electron guns; Equations; Quality control; Schottky diodes; Shape control; Temperature; Voltage;
fLanguage :
English
Journal_Title :
Electron Devices, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9383
Type :
jour
DOI :
10.1109/T-ED.1986.22844
Filename :
1486061
Link To Document :
