Explosive emission properties of cathode materials in relativistic electron beam generation

Abstract

Relativistic electron beam generation studies have been carried out in LIA-400 system through explosive electron emission for various cathode materials. This paper presents the emission properties of different cathode materials at peak diode voltages varying from 10 to 220 kV and at peak current levels from 0.5 to 2.2 kA in a single pulse duration of 160-180 ns. The cathode materials used are graphite, stainless steel, and red polymer velvet. The perveance data calculated from experimental waveforms are compared with 1-D Child Langmuir formula to obtain the cathode plasma expansion velocity for various cathode materials. Various diode parameters are subject to shot to shot variation analysis. Velvet cathode proves to be the best electron emitter because of its lower plasma expansion velocity and least shot to shot variability.

Original language	English
Article number	6902813
Pages (from-to)	3491-3497
Number of pages	7
Journal	IEEE Transactions on Plasma Science
Volume	42
Issue number	11
DOIs	https://doi.org/10.1109/TPS.2014.2356615
Publication status	Published - 1 Nov 2014

Keywords

Electron beam applications
electron beams
electron emission
electron sources
plasma devices
pulse power systems

ASJC Scopus subject areas

Condensed Matter Physics
Nuclear and High Energy Physics

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Chandra, R., Roy, A., Kalyanasundaram, S., Patel, A. S., Sharma, V. K., Menon, R., Pasula, N., Kumar, R., Ventizenko, I., Mashchenko, A., Kolge, T., Tewari, S. V., Agarwal, R., Sharma, A., & Mittal, K. C. (2014). Explosive emission properties of cathode materials in relativistic electron beam generation. IEEE Transactions on Plasma Science, 42(11), 3491-3497. [6902813]. https://doi.org/10.1109/TPS.2014.2356615

Explosive emission properties of cathode materials in relativistic electron beam generation. / Chandra, Romesh; Roy, Amitava; Kalyanasundaram, Senthil; Patel, Ankur S.; Sharma, Vishnu Kumar; Menon, Rakhee; Pasula, Naresh; Kumar, Ranjeet; Ventizenko, Iger; Mashchenko, Alexander; Kolge, Tanmay; Tewari, Somesh Vinayak; Agarwal, Ritu; Sharma, Archana; Mittal, Kailash Chandra.

In: IEEE Transactions on Plasma Science, Vol. 42, No. 11, 6902813, 01.11.2014, p. 3491-3497.

Research output: Contribution to journal › Article › peer-review

Chandra, R, Roy, A, Kalyanasundaram, S, Patel, AS, Sharma, VK, Menon, R, Pasula, N, Kumar, R, Ventizenko, I, Mashchenko, A, Kolge, T, Tewari, SV, Agarwal, R, Sharma, A & Mittal, KC 2014, 'Explosive emission properties of cathode materials in relativistic electron beam generation', IEEE Transactions on Plasma Science, vol. 42, no. 11, 6902813, pp. 3491-3497. https://doi.org/10.1109/TPS.2014.2356615

Chandra, Romesh ; Roy, Amitava ; Kalyanasundaram, Senthil ; Patel, Ankur S. ; Sharma, Vishnu Kumar ; Menon, Rakhee ; Pasula, Naresh ; Kumar, Ranjeet ; Ventizenko, Iger ; Mashchenko, Alexander ; Kolge, Tanmay ; Tewari, Somesh Vinayak ; Agarwal, Ritu ; Sharma, Archana ; Mittal, Kailash Chandra. / Explosive emission properties of cathode materials in relativistic electron beam generation. In: IEEE Transactions on Plasma Science. 2014 ; Vol. 42, No. 11. pp. 3491-3497.

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abstract = "Relativistic electron beam generation studies have been carried out in LIA-400 system through explosive electron emission for various cathode materials. This paper presents the emission properties of different cathode materials at peak diode voltages varying from 10 to 220 kV and at peak current levels from 0.5 to 2.2 kA in a single pulse duration of 160-180 ns. The cathode materials used are graphite, stainless steel, and red polymer velvet. The perveance data calculated from experimental waveforms are compared with 1-D Child Langmuir formula to obtain the cathode plasma expansion velocity for various cathode materials. Various diode parameters are subject to shot to shot variation analysis. Velvet cathode proves to be the best electron emitter because of its lower plasma expansion velocity and least shot to shot variability.",

keywords = "Electron beam applications, electron beams, electron emission, electron sources, plasma devices, pulse power systems",

author = "Romesh Chandra and Amitava Roy and Senthil Kalyanasundaram and Patel, {Ankur S.} and Sharma, {Vishnu Kumar} and Rakhee Menon and Naresh Pasula and Ranjeet Kumar and Iger Ventizenko and Alexander Mashchenko and Tanmay Kolge and Tewari, {Somesh Vinayak} and Ritu Agarwal and Archana Sharma and Mittal, {Kailash Chandra}",

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AU - Tewari, Somesh Vinayak

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