Nathaniel J. Fisch
The alpha channeling effect in tokamaks exploits the higher population of high-energy alpha particles in the tokamak interior compared to that of low-energy alpha particles at the periphery. This study aims to investigate the implications of alpha channeling on the performance of fusion reactors. Using a theoretical approach, this work analyzes the potential of wave diffusion paths that connect hot alpha particles in the core of plasma devices with cooler particles at the edges. Results suggest that channeling 75% of the alpha particle energy to ions could enhance reactivity significantly, potentially leading to a more economical tokamak reactor. Additionally, the findings propose that similar advantages might also be applicable in mirror machines, which are noted for their easier fueling and ash removal capabilities. However, it is also highlighted that these devices are challenged by high power requirements. Therefore, effectively utilizing channeled energy to reduce circulating power is posited as a critical improvement for reactor feasibility. Overall, this research underscores the importance of exploring alpha channeling to optimize performance in fusion technologies.
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title={Alpha Channeling in Mirror Machines and},
author={Nathaniel J. Fisch},
year={2026},
language={en}
}TY - JOUR TI - Alpha Channeling in Mirror Machines and AU - Nathaniel J. Fisch PY - 2026 LA - en ER -
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