Parameters of the Ion Flux Generated in a Vacuum Arc With a Dielectric Cathode in the First Minutes After Breakdown

Stability is one of the key directions of optimization for plasma sources. This article deals with the parameters of the plasma flux generated in a vacuum arc with a dielectric cathode made of CeO _{2} in the period after a breakdown when the cathode relaxes after the impact caused by the initiatio...

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Published in:IEEE transactions on plasma science 2023-04, Vol.51 (4), p.1-6
Main Authors: Vetrova, Sofiya B., Usmanov, Ravil A., Antonov, Nikolay N., Melnikov, Anton D., Polishchuk, Vladimir P.
Format: Article
Language:English
Subjects:
Anomalies
Breakdown
Cathodes
Cerium
Cerium oxides
Discharges (electric)
Electric potential
Fluctuations
Ion energy spectrum
Ion flux
Ions
multigrid probe (MP)
Optimization
Parameters
Plasma temperature
Plasmas
Temperature measurement
temporal evolution
time-of-flight mass spectrometry (TOFMS)
vacuum arc
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container_title IEEE transactions on plasma science
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creator Vetrova, Sofiya B.
Usmanov, Ravil A.
Antonov, Nikolay N.
Melnikov, Anton D.
Polishchuk, Vladimir P.
description Stability is one of the key directions of optimization for plasma sources. This article deals with the parameters of the plasma flux generated in a vacuum arc with a dielectric cathode made of CeO _{2} in the period after a breakdown when the cathode relaxes after the impact caused by the initiation of plasma. The dielectric nature of the cathode made the period of relaxation rather long. It was shown that the plasma flux during the relaxation of the cathode was characterized by intense oscillations of ion energies and differed in the ionic composition from stable arcing. Cerium ions Ce ^{++} represented about 30% of the generated flux in the first minutes of the arc operation. An interpretation is presented of the anomalies observed.
doi_str_mv 10.1109/TPS.2023.3253871
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source IEEE Electronic Library (IEL) Journals
subjects Anomalies
Breakdown
Cathodes
Cerium
Cerium oxides
Discharges (electric)
Electric potential
Fluctuations
Ion energy spectrum
Ion flux
Ions
multigrid probe (MP)
Optimization
Parameters
Plasma temperature
Plasmas
Temperature measurement
temporal evolution
time-of-flight mass spectrometry (TOFMS)
vacuum arc
title Parameters of the Ion Flux Generated in a Vacuum Arc With a Dielectric Cathode in the First Minutes After Breakdown
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