| Autor: |
Xue Zhang, Tao Wang, Chao Chang |
| Jazyk: |
angličtina |
| Rok vydání: |
2024 |
| Předmět: |
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| Zdroj: |
Results in Physics, Vol 63, Iss , Pp 107828- (2024) |
| Druh dokumentu: |
article |
| ISSN: |
2211-3797 |
| DOI: |
10.1016/j.rinp.2024.107828 |
| Popis: |
This study presents a novel self-sustained multipactor mechanism observed in a two-sided dielectric-loaded parallel-plate waveguide. By employing an in-house Monte Carlo algorithm that incorporates numerical calculations of electrostatic field alongside the dynamic electron tracking, we accurately predict the temporal evolution of the discharge. It is found that the emission of secondary electrons leads to the positive self-charging of the two dielectrics. The accumulation of charges creates a non-uniform electrostatic field, which disrupts the double-sided resonant motion of the secondary electrons and ultimately establishes a steady state condition. Thereafter, the electrons drive double- or single-sided stochastic motion, corresponding to low or high orders of resonance, respectively. The susceptibility chart demonstrates that the multipactor saturation threshold is directly correlated to the ratio of the electrostatic field intensity to the radio frequency (RF) electric field intensity. Given the saturation condition, positive pre-charged dielectrics show promise in suppressing secondary electrons. Furthermore, when two dielectrics possess distinct secondary electron yield (SEY), the saturation time of self-charging on one dielectric will be influenced by the SEY of the opposing dielectric, while the saturation value of self-charging on each dielectric surface will remain stable. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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