Electronegativity effects on plasma dynamics in He/O$_2$ RF microplasma jets at atmospheric pressure
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arXiv
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| Autores principales: | , , , , , , , , |
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| Formato: | Preprint |
| Publicado: |
2025
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| Materias: | |
| Acceso en línea: | |
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| _version_ | 1866913864149368832 |
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| author | Vogelhuber, Lukas Korolov, Ihor Vass, Mate Noesges, Katharina Bolles, Tim Köhn, Kevin Klich, Maximilian Brinkmann, Ralf Peter Mussenbrock, Thomas |
| author_facet | Vogelhuber, Lukas Korolov, Ihor Vass, Mate Noesges, Katharina Bolles, Tim Köhn, Kevin Klich, Maximilian Brinkmann, Ralf Peter Mussenbrock, Thomas |
| contents | This work investigates the transitions between ohmic mode and Penning-Gamma mode in a capacitively coupled radio frequency micro atmospheric pressure plasma jets (CCRF $μ$APPJ) operated in He/O$_2$ mixtures by comparing phase-resolved optical emission spectroscopy (PROES) measurements of helium excitation with numerical simulations. The simulations employ a hybrid model that treats electrons kinetically via PIC/MCC, while ions and neutrals are modeled fluid dynamically. These results reveal that increasing electronegativity causes inhomogeneities in the bulk electric field, consequently modulating electron impact excitation dynamics. A good agreement was found between experiments and simulations. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2505_22460 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Electronegativity effects on plasma dynamics in He/O$_2$ RF microplasma jets at atmospheric pressure Vogelhuber, Lukas Korolov, Ihor Vass, Mate Noesges, Katharina Bolles, Tim Köhn, Kevin Klich, Maximilian Brinkmann, Ralf Peter Mussenbrock, Thomas Plasma Physics This work investigates the transitions between ohmic mode and Penning-Gamma mode in a capacitively coupled radio frequency micro atmospheric pressure plasma jets (CCRF $μ$APPJ) operated in He/O$_2$ mixtures by comparing phase-resolved optical emission spectroscopy (PROES) measurements of helium excitation with numerical simulations. The simulations employ a hybrid model that treats electrons kinetically via PIC/MCC, while ions and neutrals are modeled fluid dynamically. These results reveal that increasing electronegativity causes inhomogeneities in the bulk electric field, consequently modulating electron impact excitation dynamics. A good agreement was found between experiments and simulations. |
| title | Electronegativity effects on plasma dynamics in He/O$_2$ RF microplasma jets at atmospheric pressure |
| topic | Plasma Physics |
| url | https://arxiv.org/abs/2505.22460 |