Impact of vibrationally and electronically excited H2 on the molecular assisted recombination rate in detached plasma regimes
The vibrational redistribution of H2 molecules via the B1Σu+ and C1Πu states are included in the determination of molecular assisted recombination (MAR) rates and are found to have negligible impact in detached plasma regimes. In high recycling and detached divertor plasma conditions, MAR occurs thr...
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| Format: | Article |
| Language: | English |
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Elsevier
2023-03-01
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| Series: | Nuclear Materials and Energy |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2352179122002411 |
| _version_ | 1811154425911181312 |
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| author | R. Chandra A. Holm M. Groth |
| author_facet | R. Chandra A. Holm M. Groth |
| author_sort | R. Chandra |
| collection | DOAJ |
| description | The vibrational redistribution of H2 molecules via the B1Σu+ and C1Πu states are included in the determination of molecular assisted recombination (MAR) rates and are found to have negligible impact in detached plasma regimes. In high recycling and detached divertor plasma conditions, MAR occurs through the higher levels (v≥4) of vibrationally excited H2 which are primarily populated through direct electron impact excitation or the electronic excitation of H2 molecules and the subsequent radiative decay to another vibrational state. We use the collisional-radiative model CRUMPET to evaluate MAR rate coefficients with electronic transitions included, which are applied to detached plasma parameters found in the linear plasma device Magnum-PSI. |
| first_indexed | 2024-04-10T04:15:24Z |
| format | Article |
| id | doaj.art-cda07f4721134bdba59bee7b0a60bd44 |
| institution | Directory Open Access Journal |
| issn | 2352-1791 |
| language | English |
| last_indexed | 2024-04-10T04:15:24Z |
| publishDate | 2023-03-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Nuclear Materials and Energy |
| spelling | doaj.art-cda07f4721134bdba59bee7b0a60bd442023-03-12T04:21:27ZengElsevierNuclear Materials and Energy2352-17912023-03-0134101360Impact of vibrationally and electronically excited H2 on the molecular assisted recombination rate in detached plasma regimesR. Chandra0A. Holm1M. Groth2Corresponding author.; Aalto University, Espoo, FinlandAalto University, Espoo, FinlandAalto University, Espoo, FinlandThe vibrational redistribution of H2 molecules via the B1Σu+ and C1Πu states are included in the determination of molecular assisted recombination (MAR) rates and are found to have negligible impact in detached plasma regimes. In high recycling and detached divertor plasma conditions, MAR occurs through the higher levels (v≥4) of vibrationally excited H2 which are primarily populated through direct electron impact excitation or the electronic excitation of H2 molecules and the subsequent radiative decay to another vibrational state. We use the collisional-radiative model CRUMPET to evaluate MAR rate coefficients with electronic transitions included, which are applied to detached plasma parameters found in the linear plasma device Magnum-PSI.http://www.sciencedirect.com/science/article/pii/S2352179122002411DivertorPlasma recombinationElectronic transitionCollisional-radiative |
| spellingShingle | R. Chandra A. Holm M. Groth Impact of vibrationally and electronically excited H2 on the molecular assisted recombination rate in detached plasma regimes Nuclear Materials and Energy Divertor Plasma recombination Electronic transition Collisional-radiative |
| title | Impact of vibrationally and electronically excited H2 on the molecular assisted recombination rate in detached plasma regimes |
| title_full | Impact of vibrationally and electronically excited H2 on the molecular assisted recombination rate in detached plasma regimes |
| title_fullStr | Impact of vibrationally and electronically excited H2 on the molecular assisted recombination rate in detached plasma regimes |
| title_full_unstemmed | Impact of vibrationally and electronically excited H2 on the molecular assisted recombination rate in detached plasma regimes |
| title_short | Impact of vibrationally and electronically excited H2 on the molecular assisted recombination rate in detached plasma regimes |
| title_sort | impact of vibrationally and electronically excited h2 on the molecular assisted recombination rate in detached plasma regimes |
| topic | Divertor Plasma recombination Electronic transition Collisional-radiative |
| url | http://www.sciencedirect.com/science/article/pii/S2352179122002411 |
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