Abstract
The reduced brightness for a 〈100〉 ZrO/W Schottky electron emitter with a tip radius of 0.8 μm has been measured. The maximum reduced brightness measured was 2×108 A/(m2 sr V). The measurements of the reduced brightness are compared with the extended Schottky theory and the theory on stochastic Coulomb interactions. At high angular current densities the reduced brightness is limited by statistical Coulomb interactions in the gun lens region. The limits to the maximum reduced brightness in an ideal configuration are explored and found to be 2×109 A/(m2 sr V) for a 0.2 μm tip and a current limiting aperture in the extractor electrode.
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Dates
Type | When |
---|---|
Created | 23 years ago (July 27, 2002, 5:12 a.m.) |
Deposited | 2 years, 1 month ago (July 9, 2023, 6:50 p.m.) |
Indexed | 2 months, 3 weeks ago (June 2, 2025, 7:47 a.m.) |
Issued | 23 years, 9 months ago (Nov. 1, 2001) |
Published | 23 years, 9 months ago (Nov. 1, 2001) |
Published Print | 23 years, 9 months ago (Nov. 1, 2001) |
@article{van_Veen_2001, title={Reduced brightness of the ZrO/W Schottky electron emitter}, volume={19}, ISSN={1520-8567}, url={http://dx.doi.org/10.1116/1.1409390}, DOI={10.1116/1.1409390}, number={6}, journal={Journal of Vacuum Science & Technology B: Microelectronics and Nanometer Structures Processing, Measurement, and Phenomena}, publisher={American Vacuum Society}, author={van Veen, A. H. V. and Hagen, C. W. and Barth, J. E. and Kruit, P.}, year={2001}, month=nov, pages={2038–2044} }