Performance evaluation of self-breakdown-based single-gap plasma cathode electron gun

This paper deals with the investigations of ceramic-metal sealed-off pseudospark switches with an auxiliary glow discharge in the trigger unit. The switches are produced commercially by the Pulsed Technology Ltd., Ryazan, Russia. Attention is concentrated on the switch TPI1-10k/50 (pulsed current-10 kA and anode voltage-up to 50 kV). The schematic design of the devices and the principles of function are described. It is demonstrated that the switch is able to operate with an electric circuit corresponding to the classical hydrogen thyratron and to the thyratron with a grounded grid. In both cases, a delay time to triggering in the vicinity of 100 ns and a nanosecond jitter in the delay time are achievable.Index Terms-Auxiliary glow discharge, grounded grid thyratron, pseudospark switch, pulsed discharge with hollow cathode, trigger unit.

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“…If the auxiliary glow discharge in the trigger unit is absent, the hold-off of the switch is increased by (20)(21)(22)(23)(24)(25)%.…”

Section: Schematic Design and Principle Of Triggeringmentioning

confidence: 99%

Nanosecond Triggering for Sealed-Off Cold Cathode Thyratrons With a Trigger Unit Based on an Auxiliary Glow Discharge

Korolev

Landl

Geyman

et al. 2015

IEEE Trans. Plasma Sci.

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Simulation and experimental studies of 20 kV/200 A PCE-Gun for discharge current analysis

et al. 2015

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A multiple gap plasma cathode electron gun and its electron beam analysis in self and trigger breakdown modes

Kumar

Pal

Jadon

et al. 2016

Review of Scientific Instruments

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In the present paper, a pseudospark discharge based multiple gap plasma cathode electron gun is reported which has been operated separately in self and trigger breakdown modes using two different gases, namely, argon and hydrogen. The beam current and beam energy have been analyzed using a concentric ring diagnostic arrangement. Two distinct electron beams are clearly seen with hollow cathode and conductive phases. The hollow cathode phase has been observed for ∼50 ns where the obtained electron beam is having low beam current density and high energy. While in conductive phase it is high current density and low energy electron beam. It is inferred that in the hollow cathode phase the beam energy is more for the self breakdown case whereas the current density is more for the trigger breakdown case. The tailor made operation of the hollow cathode phase electron beam can play an important role in microwave generation. Up to 30% variation in the electron beam energy has been achieved keeping the same gas and by varying the breakdown mode operations. Also, up to 32% variation in the beam current density has been achieved for the trigger breakdown mode at optimized trigger position by varying the gas type.

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Performance evaluation of self-breakdown-based single-gap plasma cathode electron gun

Cited by 11 publications

References 13 publications

Nanosecond Triggering for Sealed-Off Cold Cathode Thyratrons With a Trigger Unit Based on an Auxiliary Glow Discharge

Nanosecond Triggering for Sealed-Off Cold Cathode Thyratrons With a Trigger Unit Based on an Auxiliary Glow Discharge

Simulation and experimental studies of 20 kV/200 A PCE-Gun for discharge current analysis

A multiple gap plasma cathode electron gun and its electron beam analysis in self and trigger breakdown modes

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