Electron beams generation in space-charge regime

L. Martina; Vincenzo Nassisi; A. Pedone; G. Raganato

doi:10.1117/12.529252

19 November 2003 Electron beams generation in space-charge regime

L. Martina, Vincenzo Nassisi, A. Pedone, G. Raganato

Proceedings Volume 4829, 19th Congress of the International Commission for Optics: Optics for the Quality of Life; (2003) https://doi.org/10.1117/12.529252
Event: 19th Congress of the International Commission for Optics: Optics for the Quality of Life, 2002, Florence, Italy

Abstract

We generated electron beams by a Nb polycrystalline photocathode illuminated by different wavelength excimer lasers; an XeCl and a KrCl. The cathode surface roughness was 0.09. At low accelerating voltage, the electron beams were governed by the space-charge effect and their intensity never resulted clipped as previous by the Child-Langmuir law. Instead, the output current waveform was similar to the laser one under saturation regime. The quantum efficiencies were 3.2 x 10^-5 and 6.7 x 10^-7 for the KrCl and XeCl irradiation, respectively.

Citation Download Citation

L. Martina, Vincenzo Nassisi, A. Pedone, and G. Raganato "Electron beams generation in space-charge regime", Proc. SPIE 4829, 19th Congress of the International Commission for Optics: Optics for the Quality of Life, (19 November 2003); https://doi.org/10.1117/12.529252

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