Modeling the low-pressure high-voltage branch of the Paschen curve for hydrogen and deuterium
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arXiv
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| Autori principali: | , , |
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| Natura: | Preprint |
| Pubblicazione: |
2024
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| _version_ | 1866929299583401984 |
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| author | Khrabrov, Alexander V. Smith, David. J. Kaganovich, Igor D. |
| author_facet | Khrabrov, Alexander V. Smith, David. J. Kaganovich, Igor D. |
| contents | A physical and numerical model of the Townsend discharge in molecular hydrogen and deuterium has been developed to meet the needs of designing a plasma-based switching device for power grid application. The model allows to predict the low-pressure branch of the Paschen curve for applied voltage in the range of several hundred kiloVolts. In the regime of interest, electrons are in a runaway state and ionization by ions and fast neutrals sustains the discharge. It was essential to correctly account for both gas-phase and surface interactions (electron emission and electron back-scattering), especially in terms of their dependence on particle energy. The model yields results consistent with prior data obtained for lower voltage. The three-species (electrons, ions and fast neutrals) model successfully captures the essential physics of the process. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2404_01187 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Modeling the low-pressure high-voltage branch of the Paschen curve for hydrogen and deuterium Khrabrov, Alexander V. Smith, David. J. Kaganovich, Igor D. Plasma Physics A physical and numerical model of the Townsend discharge in molecular hydrogen and deuterium has been developed to meet the needs of designing a plasma-based switching device for power grid application. The model allows to predict the low-pressure branch of the Paschen curve for applied voltage in the range of several hundred kiloVolts. In the regime of interest, electrons are in a runaway state and ionization by ions and fast neutrals sustains the discharge. It was essential to correctly account for both gas-phase and surface interactions (electron emission and electron back-scattering), especially in terms of their dependence on particle energy. The model yields results consistent with prior data obtained for lower voltage. The three-species (electrons, ions and fast neutrals) model successfully captures the essential physics of the process. |
| title | Modeling the low-pressure high-voltage branch of the Paschen curve for hydrogen and deuterium |
| topic | Plasma Physics |
| url | https://arxiv.org/abs/2404.01187 |