Title :
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
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;
Conference_Titel :
Vacuum Electronics Conference (IVEC), 2013 IEEE 14th International
Conference_Location :
Paris
Print_ISBN :
978-1-4673-5976-4
DOI :
10.1109/IVEC.2013.6571035
