Abstract
The results of experimental studies of different types of cathodes - carbon-epoxy rods, carbon-epoxy capillary, edged graphite, and metal-dielectric - under the application of high-voltage pulses with an amplitude of several hundreds of kV and pulse duration of several nanoseconds are presented. The best diode performance was achieved with the edged graphite and carbon-epoxy-based cathodes characterized by uniform and fast (<1 ns) formation of explosive emission plasma spots and quasi-constant diode impedance. This result was achieved for both annular cathodes in a strong magnetic field and planar cathodes of a similar diameter (∼2 cm) with no external magnetic field. The cathodes based on carbon-epoxy rods and carbon-epoxy capillaries operating with an average current density up to 1 kA/cm2 showed insignificant erosion along 106 pulses of the generator and the generated electron beam current showed excellent reproducibility in terms of the amplitude and waveform.
| Original language | English |
|---|---|
| Article number | 193302 |
| Journal | Journal of Applied Physics |
| Volume | 118 |
| Issue number | 19 |
| DOIs | |
| Publication status | Published - 21 Nov 2015 |
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ASJC Scopus subject areas
- Physics and Astronomy(all)
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Experimental research of different plasma cathodes for generation of high-current electron beams. / Shafir, G.; Kreif, M.; Gleizer, J. Z.; Gleizer, S.; Krasik, Ya E.; Gunin, A. V.; Kutenkov, O. P.; Pegel, I. V.; Rostov, V. V.
In: Journal of Applied Physics, Vol. 118, No. 19, 193302, 21.11.2015.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Experimental research of different plasma cathodes for generation of high-current electron beams
AU - Shafir, G.
AU - Kreif, M.
AU - Gleizer, J. Z.
AU - Gleizer, S.
AU - Krasik, Ya E.
AU - Gunin, A. V.
AU - Kutenkov, O. P.
AU - Pegel, I. V.
AU - Rostov, V. V.
PY - 2015/11/21
Y1 - 2015/11/21
N2 - The results of experimental studies of different types of cathodes - carbon-epoxy rods, carbon-epoxy capillary, edged graphite, and metal-dielectric - under the application of high-voltage pulses with an amplitude of several hundreds of kV and pulse duration of several nanoseconds are presented. The best diode performance was achieved with the edged graphite and carbon-epoxy-based cathodes characterized by uniform and fast (<1 ns) formation of explosive emission plasma spots and quasi-constant diode impedance. This result was achieved for both annular cathodes in a strong magnetic field and planar cathodes of a similar diameter (∼2 cm) with no external magnetic field. The cathodes based on carbon-epoxy rods and carbon-epoxy capillaries operating with an average current density up to 1 kA/cm2 showed insignificant erosion along 106 pulses of the generator and the generated electron beam current showed excellent reproducibility in terms of the amplitude and waveform.
AB - The results of experimental studies of different types of cathodes - carbon-epoxy rods, carbon-epoxy capillary, edged graphite, and metal-dielectric - under the application of high-voltage pulses with an amplitude of several hundreds of kV and pulse duration of several nanoseconds are presented. The best diode performance was achieved with the edged graphite and carbon-epoxy-based cathodes characterized by uniform and fast (<1 ns) formation of explosive emission plasma spots and quasi-constant diode impedance. This result was achieved for both annular cathodes in a strong magnetic field and planar cathodes of a similar diameter (∼2 cm) with no external magnetic field. The cathodes based on carbon-epoxy rods and carbon-epoxy capillaries operating with an average current density up to 1 kA/cm2 showed insignificant erosion along 106 pulses of the generator and the generated electron beam current showed excellent reproducibility in terms of the amplitude and waveform.
UR - http://www.scopus.com/inward/record.url?scp=84948452985&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84948452985&partnerID=8YFLogxK
U2 - 10.1063/1.4935880
DO - 10.1063/1.4935880
M3 - Article
AN - SCOPUS:84948452985
VL - 118
JO - Journal of Applied Physics
JF - Journal of Applied Physics
SN - 0021-8979
IS - 19
M1 - 193302
ER -