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arXiv 1102.4858nucl-thastro-ph.SRhep-phnucl-ex
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~(11)B与中微子核合成中的中微子振荡和光谱

11B and Constraints on Neutrino Oscillations and Spectra from Neutrino Nucleosynthesis

Sam M. Austin, Alex Heger, Clarisse Tur

摘要:

我们研究了核心坍缩超新星中中微子过程同位素7 Li、11 B、19 F、138 La和180 Ta的产额对三重α和12 C(α,γ)16 O反应速率变化的敏感性。与太阳丰度相比,这些恒星中产生的7 Li不到15%,19 F约25-80%,138 La约一半。在每个氦燃烧速率的2 σ范围内,11 B被过量产生,产量的变化量大于中微子振荡效应引起的变化量。然而,总的11B产额最终可能会对超新星中微子光谱提供限制。

英文摘要:

We have studied the sensitivity to variations in the triple alpha and 12C(alpha, gamma)16O reaction rates, of the yield of the neutrino process isotopes 7Li,11B, 19F, 138La, and 180Ta in core collapse supernovae. Compared to solar abundances, less than 15% of 7Li, about 25-80% of 19F, and about half of 138La is produced in these stars. Over a range of two sigma for each helium-burning rate, 11B is overproduced and the yield varies by an amount larger than the variation caused by the effects of neutrino oscillations. The total 11B yield, however, may eventually provide constraints on supernova neutrino spectra.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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