Dynamics of plasma reconfiguration after pellet injection in Heliotron J
Abstract Because of the many degrees of freedom in magnetized plasmas, the plasma is largely reconfigured when the plasma achieves a non-equilibrium steady state in response to changes in the internal environment. Here we report observations of a plasma reconfiguration process when the density is in...
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2025-05-01
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| Series: | Scientific Reports |
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| Online Access: | https://doi.org/10.1038/s41598-025-00993-5 |
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| author | K. Ogihara S. Inagaki S. Kado R. Matsutani G. Motojima S. Kobayashi F. Kin S. Ohshima T. Minami S. Konoshima T. Mizuuchi H. Okada K. Nagasaki |
| author_facet | K. Ogihara S. Inagaki S. Kado R. Matsutani G. Motojima S. Kobayashi F. Kin S. Ohshima T. Minami S. Konoshima T. Mizuuchi H. Okada K. Nagasaki |
| author_sort | K. Ogihara |
| collection | DOAJ |
| description | Abstract Because of the many degrees of freedom in magnetized plasmas, the plasma is largely reconfigured when the plasma achieves a non-equilibrium steady state in response to changes in the internal environment. Here we report observations of a plasma reconfiguration process when the density is increased by pellet injection in Heliotron J. The plasma shows no adiabatic response to pellet injection and achieves an improved confinement during the reconfiguration process. It was found that plasma shrinking and expansion arose and the magnetic field line structure in the divertor region also changed in the plasma reconfiguration process. |
| format | Article |
| id | doaj-art-101f86ae5f0043aab13e50a65b25a2b2 |
| institution | Kabale University |
| issn | 2045-2322 |
| language | English |
| publishDate | 2025-05-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj-art-101f86ae5f0043aab13e50a65b25a2b22025-08-20T03:48:05ZengNature PortfolioScientific Reports2045-23222025-05-011511910.1038/s41598-025-00993-5Dynamics of plasma reconfiguration after pellet injection in Heliotron JK. Ogihara0S. Inagaki1S. Kado2R. Matsutani3G. Motojima4S. Kobayashi5F. Kin6S. Ohshima7T. Minami8S. Konoshima9T. Mizuuchi10H. Okada11K. Nagasaki12Graduate School of Energy Science, Kyoto UniversityInstitute of Advanced Energy, Kyoto UniversityInstitute of Advanced Energy, Kyoto UniversityGraduate School of Energy Science, Kyoto UniversityNational Institute for Fusion ScienceInstitute of Advanced Energy, Kyoto UniversityInstitute of Advanced Energy, Kyoto UniversityUniversity of CaliforniaInstitute of Advanced Energy, Kyoto UniversityInstitute of Advanced Energy, Kyoto UniversityInstitute of Advanced Energy, Kyoto UniversityInstitute of Advanced Energy, Kyoto UniversityInstitute of Advanced Energy, Kyoto UniversityAbstract Because of the many degrees of freedom in magnetized plasmas, the plasma is largely reconfigured when the plasma achieves a non-equilibrium steady state in response to changes in the internal environment. Here we report observations of a plasma reconfiguration process when the density is increased by pellet injection in Heliotron J. The plasma shows no adiabatic response to pellet injection and achieves an improved confinement during the reconfiguration process. It was found that plasma shrinking and expansion arose and the magnetic field line structure in the divertor region also changed in the plasma reconfiguration process.https://doi.org/10.1038/s41598-025-00993-5Heliotron JPellet injectionReheat mode |
| spellingShingle | K. Ogihara S. Inagaki S. Kado R. Matsutani G. Motojima S. Kobayashi F. Kin S. Ohshima T. Minami S. Konoshima T. Mizuuchi H. Okada K. Nagasaki Dynamics of plasma reconfiguration after pellet injection in Heliotron J Scientific Reports Heliotron J Pellet injection Reheat mode |
| title | Dynamics of plasma reconfiguration after pellet injection in Heliotron J |
| title_full | Dynamics of plasma reconfiguration after pellet injection in Heliotron J |
| title_fullStr | Dynamics of plasma reconfiguration after pellet injection in Heliotron J |
| title_full_unstemmed | Dynamics of plasma reconfiguration after pellet injection in Heliotron J |
| title_short | Dynamics of plasma reconfiguration after pellet injection in Heliotron J |
| title_sort | dynamics of plasma reconfiguration after pellet injection in heliotron j |
| topic | Heliotron J Pellet injection Reheat mode |
| url | https://doi.org/10.1038/s41598-025-00993-5 |
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