Current waveform reconstruction from an explosively emissive cathode at a subnanosecond voltage front

Journal Article · Mon Dec 15 00:00:00 EST 2014 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.4902853· OSTI ID:22392293

Ul'masculov, M. R.; Shpak, V. G.; Shunailov, S. A.; Yalandin, M. I. ^[1]; Mesyats, G. A. ^[2]; Rostov, V. V. ^[3]; Kolomiets, M. D. ^[4]

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1. Institute of Electrophysics UB RAS, 106 Amundsen Str., 620016 Ekaterinburg (Russian Federation)
2. P. N. Lebedev Physical Institute, RAS, 53, Lenin Avenue, 119991 Moscow (Russian Federation)
3. Institute of High Current Electronics SB RAS, 2/3 Akademichesky Avenue, 634055 Tomsk (Russian Federation)
4. Ural Federal University, 19, Mira Str., 620002 Ekaterinburg (Russian Federation)

We describe the methods of registration and reconstruction of an envelope of explosive electron emission current from the edge of a cylindrical cathode, which provides a picosecond time reference of the emitted electron beam with a subnanosecond voltage front applied to the accelerating gap. Variation of the front steepness allows one to determine the beam onset time in the experiments, where a collector-type current probe can be used. The advanced method of dynamic time domain reflectometry provides exact data on electron beam current rise and track changes in the cathode emission from pulse to pulse with a precision of less than 10 ps.

• OSTI ID: 22392293
• Journal Information: Review of Scientific Instruments, Vol. 85, Issue 12; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0034-6748
• Country of Publication: United States
• Language: English

Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
ACCURACY
BEAM CURRENTS
CATHODES
CYLINDRICAL CONFIGURATION
ELECTRIC POTENTIAL
ELECTRON BEAMS
ELECTRON EMISSION
WAVE FORMS