Transport in the tokamak - reactor edge plasma with strong collisionality
In detached divertor regimes, especially in future tokamak-reactors, plasma in the divertor is strongly collisional. When ion-ion and ion-neutral collision frequencies become comparable with the ion gyrofrequency, plasma transport is strongly affected by the motion of neutral particles. This paper d...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2022-10-01
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| Series: | Nuclear Materials and Energy |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2352179122001971 |
| _version_ | 1828127029668610048 |
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| author | V. Rozhansky E. Kaveeva I. Baranovsky R.A. Pitts |
| author_facet | V. Rozhansky E. Kaveeva I. Baranovsky R.A. Pitts |
| author_sort | V. Rozhansky |
| collection | DOAJ |
| description | In detached divertor regimes, especially in future tokamak-reactors, plasma in the divertor is strongly collisional. When ion-ion and ion-neutral collision frequencies become comparable with the ion gyrofrequency, plasma transport is strongly affected by the motion of neutral particles. This paper demonstrates that in such partially ionized plasma, ion transport is regulated by the motion of neutrals which are dragged along the magnetic field and diffuse in the perpendicular direction due to the ion-neutral friction force. The motion of neutral particles and (due to the friction force) ions is to a large extent controlled by the viscosity of atoms in the presence of charge-exchange collisions. Analytic models are compared with the results of ITER simulations performed with the SOLPS-ITER plasma boundary transport code. Specific attention is paid to currents caused by ion-neutral collisions. |
| first_indexed | 2024-04-11T15:44:21Z |
| format | Article |
| id | doaj.art-166f2e1b78ce4ce7ba1644a768ce2471 |
| institution | Directory Open Access Journal |
| issn | 2352-1791 |
| language | English |
| last_indexed | 2024-04-11T15:44:21Z |
| publishDate | 2022-10-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Nuclear Materials and Energy |
| spelling | doaj.art-166f2e1b78ce4ce7ba1644a768ce24712022-12-22T04:15:38ZengElsevierNuclear Materials and Energy2352-17912022-10-0133101316Transport in the tokamak - reactor edge plasma with strong collisionalityV. Rozhansky0E. Kaveeva1I. Baranovsky2R.A. Pitts3Peter the Great St.Petersburg Polytechnic University, St.Petersburg, RussiaPeter the Great St.Petersburg Polytechnic University, St.Petersburg, RussiaPeter the Great St.Petersburg Polytechnic University, St.Petersburg, RussiaITER Organization, Route de Vinon-sur-Verdon, CS 90 046, 13067 St Paul Lez Durance Cedex, FranceIn detached divertor regimes, especially in future tokamak-reactors, plasma in the divertor is strongly collisional. When ion-ion and ion-neutral collision frequencies become comparable with the ion gyrofrequency, plasma transport is strongly affected by the motion of neutral particles. This paper demonstrates that in such partially ionized plasma, ion transport is regulated by the motion of neutrals which are dragged along the magnetic field and diffuse in the perpendicular direction due to the ion-neutral friction force. The motion of neutral particles and (due to the friction force) ions is to a large extent controlled by the viscosity of atoms in the presence of charge-exchange collisions. Analytic models are compared with the results of ITER simulations performed with the SOLPS-ITER plasma boundary transport code. Specific attention is paid to currents caused by ion-neutral collisions.http://www.sciencedirect.com/science/article/pii/S2352179122001971 |
| spellingShingle | V. Rozhansky E. Kaveeva I. Baranovsky R.A. Pitts Transport in the tokamak - reactor edge plasma with strong collisionality Nuclear Materials and Energy |
| title | Transport in the tokamak - reactor edge plasma with strong collisionality |
| title_full | Transport in the tokamak - reactor edge plasma with strong collisionality |
| title_fullStr | Transport in the tokamak - reactor edge plasma with strong collisionality |
| title_full_unstemmed | Transport in the tokamak - reactor edge plasma with strong collisionality |
| title_short | Transport in the tokamak - reactor edge plasma with strong collisionality |
| title_sort | transport in the tokamak reactor edge plasma with strong collisionality |
| url | http://www.sciencedirect.com/science/article/pii/S2352179122001971 |
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