Topological Arrest of Ballooning Modes in Non-Axisymmetric Plasmas
Fuente:
arXiv
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| Autore principale: | |
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| Natura: | Preprint |
| Pubblicazione: |
2026
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| _version_ | 1866910238210260992 |
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| author | Bhattacharjee, Amitava |
| author_facet | Bhattacharjee, Amitava |
| contents | Why do non-axisymmetric stellarators avoid ballooning crashes that afflict tokamaks? Three-dimensional geometry induces Anderson localization of ballooning modes, converting a global instability into a Ginzburg--Landau network of isolated wave packets. Global stability reduces to a percolation problem: below a critical threshold, instability is arrested; above it, a crash occurs. This explains benign stellarator saturation, predicts vulnerability in quasisymmetric designs, and introduces the critical threshold as a nonlinear stability metric for reactor optimization, pending experimental validation. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2602_07329 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Topological Arrest of Ballooning Modes in Non-Axisymmetric Plasmas Bhattacharjee, Amitava Plasma Physics Why do non-axisymmetric stellarators avoid ballooning crashes that afflict tokamaks? Three-dimensional geometry induces Anderson localization of ballooning modes, converting a global instability into a Ginzburg--Landau network of isolated wave packets. Global stability reduces to a percolation problem: below a critical threshold, instability is arrested; above it, a crash occurs. This explains benign stellarator saturation, predicts vulnerability in quasisymmetric designs, and introduces the critical threshold as a nonlinear stability metric for reactor optimization, pending experimental validation. |
| title | Topological Arrest of Ballooning Modes in Non-Axisymmetric Plasmas |
| topic | Plasma Physics |
| url | https://arxiv.org/abs/2602.07329 |