Electronic Resource
[S.l.]
:
American Institute of Physics (AIP)
Journal of Applied Physics
76 (1994), S. 5629-5635
ISSN:
1089-7550
Source:
AIP Digital Archive
Topics:
Physics
Notes:
The plasma-anode electron gun (PAG) is an electron source in which the thermionic cathode is replaced with a cold, secondary-electron-emitting electrode. Electron emission is stimulated by bombarding the cathode with high-energy ions. Ions are injected into the high-voltage gap through a gridded structure from a plasma source (gas pressure ≤50 mTorr) that is embedded in the anode electrode. The gridded structure serves as both a cathode for the plasma discharge and as an anode for the PAG. The beam current is modulated at near ground potential by modulating the plasma source, eliminating the need for a high-voltage modulator system. During laboratory tests, the PAG has demonstrated square-wave, 17-μs-long beam pulses at 100 kV and 10 A, and it has operated stably at 70 kV and 2.5 A for 210 μs pulse lengths without gap closure.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.357068
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