Performance evaluation of self-breakdown-based single-gap plasma cathode electron gun

Pramana

Mahesh Kumar¹  Ram Prakash1¹  Deepak Kumar Verma¹  Niraj Kumar1 2¹  Bharat Lal Meena¹  Udit Narayan Pal1¹  Jitendra Prajapati¹  Nalini Pareek1¹ 

[1] Microwave Tubes Division, CSIR-Central Electronics and Engineering Research Institute, Pilani 333 031, India$$

关键词: Pseudospark discharge;    hollow cathode;    electron beam;    plasma cathode electron gun;    particle-in-cell simulation.;   

DOI  :  

学科分类：物理（综合）

来源: Indian Academy of Sciences

【 摘 要 】

This paper presents the experimental studies on self-breakdown-based single-gap plasma cathode electron (PCE) gun (5–20 kV/50–160 A) in argon, gas atmosphere and its performance evaluation based on particle-in-cell (PIC) simulation code `OOPIC-Pro’.The PCE-Gun works in conducting phase (low energy, high current) of pseudospark discharge. It produces an intense electron beam, which can propagate more than 200 mm in the drift space region without external magnetic field. The profile of this beam in the drift space region at different breakdown conditions (i.e., gas pressures and applied voltages) has been studied and the experimental results are compared with simulated values. It is demonstrated that ∼30% beam current is lost during the propagation possibly due to space charge neutralization and collisions with neutral particles and walls.

【 授权许可】

Unknown