Xianggang Hu, Jiancang Su, Yu Zhang, Xiaoxin Zhu, Xiaoze Li, Weibing Tan, Ligang Zhang. Influence of metal surface electrodeposited polymer film on threshold of vacuum breakdown[J]. High Power Laser and Particle Beams, 2020, 32(7): 075002
- High Power Laser and Particle Beams
- Vol. 32, Issue 7, 075002 (2020)
Fig. 1. Vacuum gap model of coaxial structure
Fig. 2. Surface electron distribution of cathode rod
Fig. 3. Structure diagram of experimental device
Fig. 4. Electric field distribution at diode voltage 400 kV
Fig. 5. Maximum electric field on the cathode rod surface varies with the diode voltage
Fig. 6. Cathode rod with epoxy coating
Fig. 7. Experimental device
Fig. 8. Voltage and current waveforms before breakdown
Fig. 9. Breakdown voltage and current waveforms
Fig. 10. E s and E bi of cathode rod (Rz ＝0.8 µm) with ER film and AC film
Fig. 11. E s and E bi of cathode rod (Rz ＝0.2 µm) with PI film and PEEK film
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