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Generation of high-frequency bunched electrons from photoinjector with a multiring photocathode
Physical Review Accelerators and Beams ( IF 1.7 ) Pub Date : 2021-05-27 , DOI: 10.1103/physrevaccelbeams.24.052801
Fu-Han Chao , Chia-Hsiang Chen , Ping-Jung Chou , Yen-Chieh Huang

In this paper, we propose to manipulate a nonrelativistic electron beam during its emission and acceleration to create nanobunched electrons. Specifically, we simulate the acceleration of a structured electron beam emitted from a multiring photocathode in a photoinjector and show that, after acceleration, such a transversely structured beam can be transformed into a hollow beam with a longitudinal density modulation in the petahertz frequency range. Our theoretical study shows that, in the far-field zone, the coherent radiation of the bunched hollow beam approaches that of a similarly bunched solid beam in the paraxial limit.

中文翻译:

从具有多环光电阴极的光注入器产生高频束电子

在本文中,我们建议在非相对论电子束的发射和加速过程中对其进行操纵,以产生纳米束缚电子。具体而言,我们模拟了从光注入器中的多环光电阴极发射的结构化电子束的加速度,并表明,在加速之后,这种横向结构化的束可以转换为中空束,并在petahertz频率范围内进行纵向密度调制。我们的理论研究表明,在远场区,聚束空心光束的相干辐射接近近轴极限中类似聚束实心光束的相干辐射。
更新日期:2021-05-28
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