Table I.
Comparison of cathode current between the experiments and CFD
| Voltage (kV) | Anode current (μA) | The experimental cathode current (μA) | CFD cathode current (μA) |
|---|---|---|---|
| 3 | 0.7 | 0.62 | 0.59 |
| 4 | 3.8 | 3.34 | 3.23 |
| 5 | 7.5 | 6.68 | 6.64 |
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