Neutrino process nucleosynthesis and the 11B/10B ratio

Keith A. Olive, Nikos Prantzos, Sean Scully, Elisabeth Vangioni-Flam

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26 Scopus citations


We consider the evolution of the light elements (Li, Be, and B) incorporating the effects of their production by both neutrino process and cosmic-ray nucleosynthesis. We test the viability of the neutrino process to resolve the long standing problem of the 11B/10B isotopic ratio which amounts to 4 at the time of the formation of the solar system. This hypothesis may be ultimately constrained by the B/Be ratio observed in halo stars. Though we are able to obtain a solar isotopic ratio 11B/10B ≃ 4, the current paucity of data at low metallicity prevents us from making a definitive conclusion regarding the resolution of this problem. We show, however, that neutrino process nucleosynthesis leads to a relatively model independent prediction that the B/Be elemental ratio is large (> 50) at low metallicities ([Fe/H] < -3.0), if Be is produced as a secondary element (as is the case in the conventional scenario of galactic cosmic-ray nucleosynthesis).

Original languageEnglish (US)
Pages (from-to)666-670
Number of pages5
JournalAstrophysical Journal
Issue number2
StatePublished - Apr 1 1994


  • Cosmic rays
  • Nuclear reactions, nucleosynthesis, abundances

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