Analysis of energetic particle transport: diffusion and phase-space barriers
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arXiv
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| Hauptverfasser: | , , , |
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| Format: | Preprint |
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2024
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| _version_ | 1866912034942091264 |
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| author | Carlevaro, Nakia Falessi, Matteo V. Montani, Giovanni Lauber, Philipp |
| author_facet | Carlevaro, Nakia Falessi, Matteo V. Montani, Giovanni Lauber, Philipp |
| contents | A reduced 1D model describing the non-linear hybrid LIGKA/HAGIS simulations was developed and successfully tested in [Carlevaro et al. PPCF 64, 035010 (2022)] addressing the ITER 15MA baseline scenario. In this paper, we introduce a detailed phase-space and statistical analysis to characterize the emerging transport regimes. Deviations from purely normal diffusive dynamics is quantitatively analyzed, indicating the limitations of the usual quasi-linear description of energetic particle turbulent transport. Beside the emergence of a very complex dynamics of overlapping resonances and substructure formation, this analysis reinforces the evidence of avalanche excitation and energy transfer between modes. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2409_12644 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Analysis of energetic particle transport: diffusion and phase-space barriers Carlevaro, Nakia Falessi, Matteo V. Montani, Giovanni Lauber, Philipp Plasma Physics A reduced 1D model describing the non-linear hybrid LIGKA/HAGIS simulations was developed and successfully tested in [Carlevaro et al. PPCF 64, 035010 (2022)] addressing the ITER 15MA baseline scenario. In this paper, we introduce a detailed phase-space and statistical analysis to characterize the emerging transport regimes. Deviations from purely normal diffusive dynamics is quantitatively analyzed, indicating the limitations of the usual quasi-linear description of energetic particle turbulent transport. Beside the emergence of a very complex dynamics of overlapping resonances and substructure formation, this analysis reinforces the evidence of avalanche excitation and energy transfer between modes. |
| title | Analysis of energetic particle transport: diffusion and phase-space barriers |
| topic | Plasma Physics |
| url | https://arxiv.org/abs/2409.12644 |