Modeling of hydrogen isotope effect on divertor detachment in EAST
The two-dimensional edge plasma code SOLPS-ITER have been used to study the hydrogen isotope effect on the divertor detachment onset for hydrogen (H), deuterium (D), and tritium (T) based on EAST plasma conditions. Results prove that H with a lighter mass has a stronger ability to penetrate into the...
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| Format: | Article |
| Language: | English |
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IOP Publishing
2025-01-01
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| Series: | Nuclear Fusion |
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| Online Access: | https://doi.org/10.1088/1741-4326/adacfb |
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| author | Qiushi Li Rui Ding Guoliang Xu Ilya Senichenkov Elizaveta Kaveeva Hang Si Vladimir Rozhansky Junling Chen |
| author_facet | Qiushi Li Rui Ding Guoliang Xu Ilya Senichenkov Elizaveta Kaveeva Hang Si Vladimir Rozhansky Junling Chen |
| author_sort | Qiushi Li |
| collection | DOAJ |
| description | The two-dimensional edge plasma code SOLPS-ITER have been used to study the hydrogen isotope effect on the divertor detachment onset for hydrogen (H), deuterium (D), and tritium (T) based on EAST plasma conditions. Results prove that H with a lighter mass has a stronger ability to penetrate into the core plasma than D and T, resulting in a higher density in the core and a lower density in the SOL. If the line-averaged electron density is selected to characterize the detachment onset, the hydrogen isotope effect is strongly dependent on the measurement chord location which determines the contribution of the core electron density to the line-averaged electron density. The modeling results can explain previous hydrogen isotope experimental results in JET. The drifts effect on hydrogen isotope distributions has also been investigated. As the drifts are taken into account, the relative difference of detachment onset at the outer target becomes larger, while it becomes smaller for the inner target. The $E \times B$ drifts show a greater impact on the T ion distribution than D and H ions. |
| format | Article |
| id | doaj-art-c3a13299d7e34f6aa60e1419e81ab356 |
| institution | Kabale University |
| issn | 0029-5515 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | Nuclear Fusion |
| spelling | doaj-art-c3a13299d7e34f6aa60e1419e81ab3562025-01-31T10:47:59ZengIOP PublishingNuclear Fusion0029-55152025-01-0165202606910.1088/1741-4326/adacfbModeling of hydrogen isotope effect on divertor detachment in EASTQiushi Li0Rui Ding1https://orcid.org/0000-0003-2880-9736Guoliang Xu2https://orcid.org/0000-0001-8656-7216Ilya Senichenkov3https://orcid.org/0000-0001-5458-4919Elizaveta Kaveeva4https://orcid.org/0000-0002-8283-9138Hang Si5https://orcid.org/0009-0009-2289-6702Vladimir Rozhansky6Junling Chen7Institute of Plasma Physics , Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, China; Science Island Branch , Graduate School of University of Science and Technology of China, Hefei 230026, ChinaInstitute of Plasma Physics , Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, ChinaInstitute of Plasma Physics , Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, ChinaPeter the Great St. Petersburg Polytechnic University , Polytechnicheskaya 29, 195251 St. Petersburg, Russian FederationPeter the Great St. Petersburg Polytechnic University , Polytechnicheskaya 29, 195251 St. Petersburg, Russian FederationInstitute of Plasma Physics , Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, ChinaPeter the Great St. Petersburg Polytechnic University , Polytechnicheskaya 29, 195251 St. Petersburg, Russian FederationInstitute of Plasma Physics , Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, ChinaThe two-dimensional edge plasma code SOLPS-ITER have been used to study the hydrogen isotope effect on the divertor detachment onset for hydrogen (H), deuterium (D), and tritium (T) based on EAST plasma conditions. Results prove that H with a lighter mass has a stronger ability to penetrate into the core plasma than D and T, resulting in a higher density in the core and a lower density in the SOL. If the line-averaged electron density is selected to characterize the detachment onset, the hydrogen isotope effect is strongly dependent on the measurement chord location which determines the contribution of the core electron density to the line-averaged electron density. The modeling results can explain previous hydrogen isotope experimental results in JET. The drifts effect on hydrogen isotope distributions has also been investigated. As the drifts are taken into account, the relative difference of detachment onset at the outer target becomes larger, while it becomes smaller for the inner target. The $E \times B$ drifts show a greater impact on the T ion distribution than D and H ions.https://doi.org/10.1088/1741-4326/adacfbisotope effectdivertordetachmentSOLPS-ITER |
| spellingShingle | Qiushi Li Rui Ding Guoliang Xu Ilya Senichenkov Elizaveta Kaveeva Hang Si Vladimir Rozhansky Junling Chen Modeling of hydrogen isotope effect on divertor detachment in EAST Nuclear Fusion isotope effect divertor detachment SOLPS-ITER |
| title | Modeling of hydrogen isotope effect on divertor detachment in EAST |
| title_full | Modeling of hydrogen isotope effect on divertor detachment in EAST |
| title_fullStr | Modeling of hydrogen isotope effect on divertor detachment in EAST |
| title_full_unstemmed | Modeling of hydrogen isotope effect on divertor detachment in EAST |
| title_short | Modeling of hydrogen isotope effect on divertor detachment in EAST |
| title_sort | modeling of hydrogen isotope effect on divertor detachment in east |
| topic | isotope effect divertor detachment SOLPS-ITER |
| url | https://doi.org/10.1088/1741-4326/adacfb |
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