Plasma-based microwave power limitation in a printed transmission line: a self-consistent model compared with experimental data
| Autor: | Lucas Fuster, Gerjan Hagelaar, Romain Pascaud, Antoine Simon, Patrick Hoffmann, Laurent Liard, Olivier Pascal, Thierry Callegari |
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| Přispěvatelé: | Commissariat à l'Energie Atomique et aux énergies alternatives - CEA (FRANCE), Centre National de la Recherche Scientifique - CNRS (FRANCE), Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE), Institut Supérieur de l'Aéronautique et de l'Espace - ISAE-SUPAERO (FRANCE), Université Toulouse III - Paul Sabatier - UT3 (FRANCE), Anywaves (FRANCE) |
| Rok vydání: | 2022 |
| Předmět: | |
| Zdroj: | Plasma Sources Science and Technology. 31:025009 |
| ISSN: | 1361-6595 0963-0252 |
| Popis: | Plasma-based microwave power limitation in a suspended microstrip transmission line integrating a micro hollow cathode discharge (MHCD) in its centre is experimentally and numerically studied. Transient and steady state microwave power measurements exhibit a limitation threshold of 28 dBm and time responses of 25 microseconds. Intensified charge-coupled device imaging shows that microwave breakdown occurs at the top of the MHCD. The plasma then extends towards the microwave source within the suspended microstrip transmission line. Besides, a self-consistent model is proposed to simulate the non-linear interaction between microwave and plasma. It gives numerical results in agreement with the measurements, and show that the plasma expansion during the transient response is related to a shift between the ionization source term and the electron density maximum. The propagation speed, under the tested conditions, depends mainly on the stepwise ionization from the excited states. |
| Databáze: | OpenAIRE |
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