| Autor: |
Konopliv, Mary F., Johnson, Lee K., Wirz, Richard E. |
| Zdroj: |
Journal of Applied Physics; 12/14/2024, Vol. 136 Issue 22, p1-15, 15p |
| Abstrakt: |
This study uses concurrent spectroscopic measurements that provide evidence of the predator–prey behavior between ions, neutral atoms, and electrons that is theorized to drive the Hall thruster breathing mode, a crucial oscillation in Hall thrusters impacting their efficiency and stability. A novel fast optical emission spectroscopy diagnostic is employed to simultaneously measure the characteristics of neutral and ion populations through their respective emissions. A quasi-1D predator–prey model of the breathing mode is utilized to predict the phase difference between neutral and ion populations according to the predator–prey theory. The observed phase difference between Xe I and Xe II emissions is consistent with the expected phase difference between neutral and ion populations predicted by the quasi-1D model. Several operating conditions are explored, and the impact of adjusting the plasma conditions are explored both through experiments and modeling. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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