Pulsed field emission from cold carbon-nanotube cathodes placed in a radiofrequency resonant cavity was directly measured. The cathodes were located on the backplate of a conventional 1 þ 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 Ampe`re. 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 the promise of high-average-current electron sources are briefly discussed.
Ampère-Class pulsed field emission from carbon-nanotube cathodes in a radiofrequency resonator / Mihalcea, D.; Faillace, L.; Hartzell, J.; Panuganti, H.; Boucher, S.; Murokh, A.; Thangaraj, P. Piot J. C. T.. - In: APPLIED PHYSICS LETTERS. - ISSN 1077-3118. - (2015).
Ampère-Class pulsed field emission from carbon-nanotube cathodes in a radiofrequency resonator
L. Faillace;
2015
Abstract
Pulsed field emission from cold carbon-nanotube cathodes placed in a radiofrequency resonant cavity was directly measured. The cathodes were located on the backplate of a conventional 1 þ 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 Ampe`re. 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 the promise of high-average-current electron sources are briefly discussed.| File | Dimensione | Formato | |
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