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Proceedings Paper

Electron beams generation in space-charge regime
Author(s): L. Martina; Vincenzo Nassisi; A. Pedone; G. Raganato
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Paper 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.

Paper Details

Date Published: 19 November 2003
PDF: 2 pages
Proc. SPIE 4829, 19th Congress of the International Commission for Optics: Optics for the Quality of Life, (19 November 2003); doi: 10.1117/12.529252
Show Author Affiliations
L. Martina, Univ. degli Studi di Lecce (Italy)
Vincenzo Nassisi, Univ. degli Studi di Lecce (Italy)
A. Pedone, Univ. degli Studi di Lecce (Italy)
G. Raganato, Univ. degli Studi di Lecce (Italy)


Published in SPIE Proceedings Vol. 4829:
19th Congress of the International Commission for Optics: Optics for the Quality of Life
Giancarlo C. Righini; Anna Consortini, Editor(s)

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