Current-noise characteristics as an instrument for quality estimation of hot cathodes

Author

Akimov, P.I. ; Smirnov, V.A. ; Chudin, V.G. ; Vorobyev, M.D. ; Chirkov, M.N. ; Yudaev, D.N.

Author_Institution

FSUE "S&P Corp. Toriy", Moscow, Russia

fYear

2013

fDate

21-23 May 2013

Firstpage

1

Lastpage

2

Abstract

The results of experimental measurements of dispenser cathodes shot and flicker noise show that there is a relation between the experimental diodes noise characteristics and the uniformity of emitting surface. Based on these results a computer model was developed to make quantitative estimates of the emission uniformity of the cathodes. This model combined with current-voltage characteristics analysis used for a new comprehensive methodology development. The methodology allows finding the emission parameters with greater accuracy.

Keywords

flicker noise; shot noise; thermal noise; thermionic cathodes; thermionic emission; computer model; current voltage characteristics analysis; dispenser cathodes; emission parameters; emission uniformity; experimental diodes noise characteristics; flicker noise; hot cathodes; shot noise; 1f noise; Cathodes; Computer numerical control; Current measurement; Frequency dependence; Region 8; dispenser cathode; emission uniformity; flicker noise; shot noise;

fLanguage

English

Publisher

ieee

Conference_Titel

Vacuum Electronics Conference (IVEC), 2013 IEEE 14th International

Conference_Location

Paris

Print_ISBN

978-1-4673-5976-4

Type

conf

DOI

10.1109/IVEC.2013.6571035

Filename

6571035