Simulation and modeling of radio-frequency atmospheric pressure plasmas in the non-neutral regime
- Radio-frequency-driven atmospheric pressure plasma jets (RF APPJs) play an essential role in many technological applications. This work studies the characteristics of these discharges in the so-called non-neutral regime where the conventional structure of a quasi-neutral bulk and an electron depleted sheath does not develop, and the electrons are instead organized in a drift-soliton-like structure that never reaches quasi-neutrality. A hybrid particle-in-cell/Monte Carlo collisions (PIC/MCC) simulation is set up, which combines a fully kinetic electron model via the PIC/MCC algorithm with a drift-diffusion model for the ions. In addition, an analytical model for the electron dynamics is formulated. The formation of the soliton-like structure and the connection between the soliton and the electron dynamics are investigated. The location of the electron group follows a drift equation, while the spatial shape can be described by Poisson–Boltzmann equilibrium in a co-moving frame. A stability analysis is conducted using the Lyapunov method and a linear stability analysis. A comparison of the numerical simulation with the analytical models yields a good agreement.
Author: | Maximilian KlichORCiDGND, Sebastian WilczekORCiDGND, Zóltán DonkóORCiDGND, Ralf Peter BrinkmannORCiDGND |
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URN: | urn:nbn:de:hbz:294-108580 |
DOI: | https://doi.org/10.1088/1361-6595/ac5cd3 |
Parent Title (English): | Plasma sources science and technology |
Publisher: | IOP Publishing |
Place of publication: | Bristol, Vereinigtes Königreich |
Document Type: | Article |
Language: | English |
Date of Publication (online): | 2024/02/16 |
Date of first Publication: | 2022/04/07 |
Publishing Institution: | Ruhr-Universität Bochum, Universitätsbibliothek |
Tag: | COST-jet; atmospheric pressure plasma jet; hybrid particle-in-cell simulation; modeling; non-neutral discharge regime |
Volume: | 31 |
Issue: | 4, Artikel 045003 |
First Page: | 045003-1 |
Last Page: | 045003-18 |
Institutes/Facilities: | Lehrstuhl für Theoretische Elektrotechnik |
Dewey Decimal Classification: | Technik, Medizin, angewandte Wissenschaften / Elektrotechnik, Elektronik |
open_access (DINI-Set): | open_access |
faculties: | Fakultät für Elektrotechnik und Informationstechnik |
Licence (English): | Creative Commons - CC BY 4.0 - Attribution 4.0 International |