Title :
Ferroelectric plasma cathodes
Author :
Krasik, Ya.E. ; Dunaevsky, A. ; Felsteiner, J. ; Dorfman, S.
Author_Institution :
Dept. of Phys., Technion-Israel Inst. of Technol., Haifa, Israel
Abstract :
The authors present the results of studies of electron/ion emission from poled and nonpoled ferroelectric samples. The results indicate that the source of the charged particles is the plasma which is formed on the front electrode of the ferroelectric due to noncomplete surface discharge. Parameters of the plasma and the neutral flow versus the polarity and the amplitude of the driving pulses are presented. They studied the operation of electron diodes with the ferroelectric cathodes under the application of a high voltage pulse of /spl les/45 kV with a repetition rate of /spl les/5 Hz and a pulse of /spl les/250 kV in a single mode. Electron beams with a current density of several hundreds A/cm/sup 2/ and a duration of several hundreds of nanoseconds were generated.
Keywords :
cathodes; electron emission; ferroelectric devices; ion emission; plasma production; pulse generators; pulsed power supplies; charged particles; current density; electron beams; electron diodes; electron emission; ferroelectric plasma cathodes; high voltage pulse; ion emission; noncomplete surface discharge; nonpoled ferroelectric samples; poled ferroelectric samples; repetition rate; Cathodes; Diodes; Electrodes; Electron emission; Fault location; Ferroelectric materials; Ion emission; Plasma applications; Plasma sources; Surface discharges;
Conference_Titel :
Pulsed Power Conference, 1999. Digest of Technical Papers. 12th IEEE International
Conference_Location :
Monterey, CA, USA
Print_ISBN :
0-7803-5498-2
DOI :
10.1109/PPC.1999.825497
