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arXiv · 1502.03040

Amp\`ere-Class Pulsed Field Emission from Carbon-Nanotube Cathodes in a Radiofrequency Resonator

D. Mihalcea·L. Faillace·J. Hartzell·H. Panuganti·S. M. Boucher·A. Murokh·P. Piot·J. C. T. Thangaraj
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Abstract

Pulsed field emission from cold carbon-nanotube cathodes placed in a radiofrequency resonant cavity was observed. The cathodes were located on the backplate of a conventional $1+\frac{1}{2}$-cell resonant cavity operating at 1.3-GHz and resulted in the production of bunch train with maximum average current close to 0.7 Amp\`ere. The measured Fowler-Nordheim characteristic, transverse emittance, and pulse duration are presented and, when possible, compared to numerical simulations. The implications of our results to high-average-current electron sources are briefly discussed.

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D. Mihalcea, L. Faillace, J. Hartzell, H. Panuganti, S. M. Boucher, A. Murokh, P. Piot, J. C. T. Thangaraj. 2015-02-10. Amp\`ere-Class Pulsed Field Emission from Carbon-Nanotube Cathodes in a Radiofrequency Resonator. https://doi.org/10.1063/1.4927052

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