High-current long-duration uniform electron beam generation in a diode with multicapillary carbon-epoxy cathode

Journal Article · Sat Sep 28 00:00:00 EDT 2013 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.4822019· OSTI ID:22217977

Queller, T.; Gleizer, J. Z.; Krasik, Ya. E. ^[1]

---

1. Physics Department, Technion, Haifa 32000 (Israel)

The results of reproducibly generating an electron beam with a current density of up to 5 kA/cm{sup 2}, without the cathode-anode gap being shorted by the plasma formed inside the cathode carbon-epoxy capillaries, in a ∼350 kV, ∼600 ns diode, with and without an external guiding magnetic field, are presented. The cathode sustained hundreds of pulses without degradation of its emission properties. Time- and space-resolved emissions of the plasma and spectroscopy analyses were used to determine the cathode plasma's density, temperature, and expansion velocity.

• OSTI ID: 22217977
• Journal Information: Journal of Applied Physics, Vol. 114, Issue 12; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ANODES
CARBON
CATHODES
CURRENT DENSITY
ELECTRON BEAMS
ELECTRON DENSITY
ELECTRON TEMPERATURE
EPOXIDES
ION TEMPERATURE
MAGNETIC FIELDS
PLASMA DENSITY
PLASMA DIAGNOSTICS
TIME RESOLUTION