dorsal/arxiv
View SchemaOn the enhancement of nuclear reaction rates in high-temperature plasma
| Authors | Makoto Nakamura, Victor T. Voronchev, Yasuyuki Nakao |
|---|---|
| Categories | |
| ArXiv ID | physics/0607127 |
| URL | https://arxiv.org/abs/physics/0607127 |
| DOI | 10.1016/j.physleta.2006.07.077 |
| Journal | Phys.Lett.A359:663-668,2006 |
Abstract
We argue that the Maxwellian approximation can essentially underestimate the rates of some nuclear reactions in hot plasma under conditions very close to thermal equilibrium. This phenomenon is demonstrated explicitly on the example of reactions in self-sustained DT fusion plasma with admixture of light elements X = Li, Be, C. A kinetic analysis shows that the reactivity enhancement results from non-Maxwellian knock-on perturbations of ion distributions caused by close collisions with energetic fusion products. It is found that although the fraction of the knock-on ions is small, these particles appreciably affect the D+X and T+X reaction rates. The phenomenon discussed is likely to have general nature and can play role in other laboratory and probably astrophysical plasma processes.
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"abstract": "We argue that the Maxwellian approximation can essentially underestimate the\nrates of some nuclear reactions in hot plasma under conditions very close to\nthermal equilibrium. This phenomenon is demonstrated explicitly on the example\nof reactions in self-sustained DT fusion plasma with admixture of light\nelements X = Li, Be, C. A kinetic analysis shows that the reactivity\nenhancement results from non-Maxwellian knock-on perturbations of ion\ndistributions caused by close collisions with energetic fusion products. It is\nfound that although the fraction of the knock-on ions is small, these particles\nappreciably affect the D+X and T+X reaction rates. The phenomenon discussed is\nlikely to have general nature and can play role in other laboratory and\nprobably astrophysical plasma processes.",
"arxiv_id": "physics/0607127",
"authors": [
"Makoto Nakamura",
"Victor T. Voronchev",
"Yasuyuki Nakao"
],
"categories": [
"physics.plasm-ph",
"astro-ph"
],
"doi": "10.1016/j.physleta.2006.07.077",
"journal_ref": "Phys.Lett.A359:663-668,2006",
"title": "On the enhancement of nuclear reaction rates in high-temperature plasma",
"url": "https://arxiv.org/abs/physics/0607127"
},
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