Can a nearby supernova explain the <sup>10</sup>Be excess in the Early Solar System?
ORAL
Abstract
Excess of 10Be in the meteorites has mostly been studied in the context of non-thermal, in-situ nucleosynthesis due to cosmic rays or Solar energetic particles from Sun in its early phase. Recently, a low mass core-collapse supernova has been postulated as a possible source of 10Be. However, in CCSNe a major uncertainty for the production of 10Be in CCSNe is the 10Be(p,α)7Li reaction rate. We will show that a newly found resonance state in 11B (Er ~ 190 keV) is the single-most important state in the Gamow window which increases the reaction rate by many orders of magnitude. As the new reaction rate decreases the 10Be yield, we will show that low mass CCSN is unlikely to produce enough 10Be to explain the observed excess in meteorites. Remaining uncertainties in 10Be(p,α)7Li reaction rate and experimental plans to further constrain this reaction rate will be discussed.
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Publication: The role of low-lying resonances for the10Be(p, a)7Li reaction rate and implications for the formation of the Solar System,<br>A. Sieverding, J. S. Randhawa, D. Zetterberg et al., PRC 2022 (accepted) ( arXiv:2203.06524 [astro-ph.HE])
Presenters
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Jaspreet Randhawa
University of Notre Dame
Authors
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Jaspreet Randhawa
University of Notre Dame
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Andre Sieverding
Physics Division, Oak Ridge National Laboratory, P.O. Box 2008, Oak Ridge, TN 37831-6354, USA
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D. Zetterberg
Physics Division, Oak Ridge National Laboratory, P.O. Box 2008, Oak Ridge, TN 37831-6354, USA
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Richard J deBoer
University of Notre Dame
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Tan Ahn
University of Notre Dame
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R. Mancino
GSI, Darmstadt
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Gabriel Martinez-Pinedo
GSI Darmstadt
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William R Hix
Oak Ridge National Lab