Electron beams generation in space-charge regime

被引:0
|
作者
Martina, L [1 ]
Nassisi, V [1 ]
Pedone, A [1 ]
Raganato, G [1 ]
机构
[1] Ist Nazl Fis Nucl, Sez Lecce, Dept Phys, Lab Appl Elect, I-73100 Lecce, Italy
关键词
D O I
10.1117/12.529252
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
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 3.2x10(-5) and 6.7x10(-7) for the KrCl and XeCl irradiation, respectively.
引用
收藏
页码:722 / 723
页数:2
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