Statistics – Applications
Scientific paper
Jan 1997
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997aipc..387.1599w&link_type=abstract
Space technology and applications international forum (STAIF - 97). AIP Conference Proceedings, Volume 387, pp. 1599-1608 (1997
Statistics
Applications
Spaceborne And Space Research Instruments, Apparatus, And Components, Plasma Switches
Scientific paper
Transient Langmuir probe measurements of the plasma density, electron temperature, and plasma potential in the emitter-grid, grid, and grid-collector discharge regions during ``slow quenching'' of a Cs-Ba tacitron having a thick, low transparency, circular aperture grid were made. When compared to that of a thinner grid device, results showed that extinguishing in the grid-collector region occurred near the grid, but in a similar manner to that in the thinner grid device. Results showed that the beam electrons responsible for maintaining the discharge in the grid-collector gap, following the application of a negative voltage pulse to the grid, gained their energy in the emitter side of the grid aperture. This finding indicates that both the thickness of the grid and the length of the grid-collector region are important for determining where extinguishing in the grid-collector gap ensues and whether stable modulation of the device can be achieved.
El-Genk Mohamed S.
Wernsman Bernard
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