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Proceedings Paper

Measurements of current intensities from 10-18 A to 10-6 A emitted from niobium samples under high dc electric fields
Author(s): Mustapha Boussoukaya; Aline Curtoni; Anne Zeitoun-Fakiris
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Paper Abstract

An experimental set-up allowing measurements of DC field emission currents in the range of 10-18 A to 10-6 A in ultra high vacuum (P < 10-10 Torr) at room temperature has been developed. The detection of currents in the range of 10-18 A to 10-12 A was carried out with an electron multiplier located behind a grid anode. Higher currents were measured using a massive anode and a picoammeter. The whole system was designed to study niobium samples from sheets used to build electron superconducting accelerator cavities. Comparisons of the electron field emission from samples prepared by different surface treatments as chemical etching, electropolishing, oxide coating by anodization, were done. Some of the obtained results are presented below.

Paper Details

Date Published: 1 May 1994
PDF: 4 pages
Proc. SPIE 2259, XVI International Symposium on Discharges and Electrical Insulation in Vacuum, (1 May 1994); doi: 10.1117/12.174628
Show Author Affiliations
Mustapha Boussoukaya, Ctr. d'Etudes de Saclay/CEA (France)
Aline Curtoni, Ctr. d'Etudes de Saclay/CEA (France)
Anne Zeitoun-Fakiris, Ctr. d'Etudes de Saclay/CEA (France)


Published in SPIE Proceedings Vol. 2259:
XVI International Symposium on Discharges and Electrical Insulation in Vacuum
Gennady A. Mesyats, Editor(s)

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