Emitting characteristics of co-axis double annulus cathode

Li Lele; Huang Hua; Liu Zhenbang; He Hu; Yuan Huan

doi:10.11884/HPLPB201729.170116

Volume 29 Issue 10

Oct. 2017

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Article Navigation > High Power Laser and Particle Beams > 2017 > 29(10): 103001

Li Qin, He Xiaozhong, Jiang Wei, et al. Physical design of calibrated device for intense pulse electron beam position monitor[J]. High Power Laser and Particle Beams, 2023, 35: 034002. doi: 10.11884/HPLPB202335.220224

Citation:

Li Lele, Huang Hua, Liu Zhenbang, et al. Emitting characteristics of co-axis double annulus cathode[J]. High Power Laser and Particle Beams, 2017, 29: 103001. doi: 10.11884/HPLPB201729.170116

Citation:

Li Lele, Huang Hua, Liu Zhenbang, et al. Emitting characteristics of co-axis double annulus cathode[J]. High Power Laser and Particle Beams, 2017, 29: 103001. doi: 10.11884/HPLPB201729.170116

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Emitting characteristics of co-axis double annulus cathode

doi: 10.11884/HPLPB201729.170116

1.
Graduate School of Chinese Academy of Engineering Physics,Beijing 100088,China;
2.
Science and Technology on High Power Microwave Laboratory,Institute of Applied Electronics,CAEP,P.O.Box 919-1015,Mianyang 621900,China

Received Date: 2017-04-13
Rev Recd Date: 2017-06-02
Publish Date: 2017-10-15

Abstract

Abstract

In this paper, we present a new structure cathode named co-axis double annulus cathode. By modeling and solving the Laplace equation, we get the accurate distribution of potential in the diode, through which we have the connection of parameters to get the double annulus cathode emissions simultaneously. The CHIPIC particle-in-cell software was used to a simulate the electrons explosive emission of the double annulus cathode with appropriate parameters. The result verifies that, the emitting current density of the double annulus cathode is determined by both the original E-field distribution in the diode and the screening effect between two cathodes. The screening effect factor of one cathode has a linear relationship with the beam emitted from the other cathode and an exponential relationship with the distance between the two cathodes.
- multi-beam klystron,
- diode,
- cathode,
- electron beam

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