Fig. 1. Schematic of experimental setup of the pulsed vacuum discharge system
Fig. 2. Schematic of electrode structure and parameters
Fig. 3. Side-view images of discharge phenomenon for an electrode structure
Fig. 4. Schematic of electrode structure and its parameters and electric field distribution (insulating sleeve diameter is 4 mm)
[24] Fig. 5. Typical waveforms of discharge voltage and cathode current of the insulated anode structure
Fig. 6. Measurement results of plasma parameters
[24] Fig. 7. Side-view image of discharge phenomenon when insulating sleeve diameter is 4 mm
[24] Fig. 8. When the insulating sleeve diameter is 1 mm, schematic of electrode structure and its parameters and electric field distribution
[24] Fig. 9. Side-view image of discharge phenomenon when insulating sleeve diameter is 1 mm
[24] Fig. 10. PMIPT structures and their parameters
[25] Fig. 11. Side-view images of discharge phenomenon for PMIPT with different structures
[25] Fig. 12. Typical waveforms of discharge voltage, cathode current and anode current
[25] Fig. 13. Schematic of measurement points for plasma densities
Fig. 14. Spatial angular distributions of plasma densities
[25] Fig. 15. Side-view images of discharge phenomena for PMIPT structures with different micropore widths
[25] Fig. 16. Anode current waveforms with different micropore widths
[25] Fig. 17. Electric field distribution of PMIPT
Fig. 18. Magnetic field distribution of PMIPT
[26] Fig. 19. Schematic of PMIPT structures and parameters
Fig. 20. Side-view images of discharge phenomenon for different PMIPT structures (the second-anode is not shown in the picture because of its long distance from the cathode)
[27] Fig. 21. Typical waveforms of discharge voltage, cathode current and anode current (the anode current refers to that flowing through the first anode)
[27] Fig. 22. Spatial angular distributions of plasma densities
[27] electrode structure | discharge voltage/kV | cathode current/A | anode current/A | plasma density/(1016 m−3)
| propagation speed/(km·s−1)
| EAS | 13 | 110 | 110 | 3.1 | 7.1 | EASIS | 10 | 130 | 90 | 14.5 | 8.2 |
|
Table 1. [in Chinese]
electrode structure | discharge voltage/kV | cathode current/A | anode current/A | duration of cathode current/µs | duration of anode current/µs | EASIS | 9 | 104 | 58 | 17.6 | 17.6 | IAS | 9 | 88 | 0 | 23 | 0 | IASM | 9 | 104 | 46 | 17.6 | 16 |
|
Table 2. [in Chinese]
electrode structure | plasma density/(1018 m−3)
| point of peak plasma density/(°) | propagation speed/(km·s−1)
| plasma length/mm | EASIS | 2.94 | 0 | 8.5 | 5 | IAS | 9.70 | 0 | 9.6 | 4 | IASM | 16.40 | 15 | 11.1 | 9 |
|
Table 3. [in Chinese]
W/mm
| discharge voltage/kV | cathode current/A | anode current/A | duration of cathode current/µs | duration of anode current/µs | 0.2 | 9 | 104 | 23 | 17.6 | 9 | 1.0 | 9 | 104 | 46 | 17.6 | 16 | 3.0 | 9 | 104 | 50 | 17.6 | 17 |
|
Table 4. [in Chinese]
W/mm
| plasma density/(1018 m−3)
| point of peak plasma density/(°) | propagation speed/(km·s−1)
| plasma length/mm | 0.2 | 37.3 | 15 | 33.2 | 16 | 1.0 | 16.4 | 15 | 11.1 | 9 | 3.0 | 11.3 | 15 | 9.3 | 6 |
|
Table 5. [in Chinese]
anode structure | discharge voltage/kV | cathode current/A | anode current/A | plasma density/(1016 m−3)
| CAS | 15 | 250 | 250 | 2.95 | SpAS | 15 | 250 | 250 | 6.25 |
|
Table 6. [in Chinese]