Experimental Study on Generation of Electron Beam Utilizing Cold Cathode in the Weakly Relativistic Energy Region
Experimental Study on Generation of Electron Beam Utilizing Cold Cathode in the Weakly Relativistic Energy Region
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DOI：
10.1109/tps.2013.2262505
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发表时间：
2013-06
影响因子：
1.5
通讯作者：
K. Yambe;K. Ogura;Shinji Hasegawa;Takaki Shinada;T. Iwasaki;T. Furuichi
中科院分区：
文献类型：
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作者：
K. Yambe;K. Ogura;Shinji Hasegawa;Takaki Shinada;T. Iwasaki;T. Furuichi
用铜制成的矩形和圆盘冷阴极，研究了在小于100kV的弱相对论区域产生电子束。电子发射区位于阴极的边缘。为了获得均匀的电子发射，发射表面需要一定的表面粗糙度，这是通过用砂纸刮擦表面获得的。在弱相对论区域，出现了直径约25 mm、厚度约2 mm的均匀薄板梁和直径约25 mm的环形梁。实验证明了稳定的片状和环状电子束。
Electron beam generation in a weakly relativistic region of less than 100 kV is investigated utilizing rectangular and disk cold cathodes made of copper. Electron emission areas are located on the edges of the cathodes. For uniform electron emission, some surface roughness is required on the emission surface, which is obtained by scratching the surface with sandpaper. A uniform sheet beam with a size of about 2 × 40 mm and an annular beam with a diameter of about 25 mm and a thickness of about 2 mm are demonstrated in the weakly relativistic region. Stable electron beams of sheet and annular shapes are experimentally demonstrated.