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arXiv · 0902.1844

Comment on "138La-138Ce-136Ce nuclear cosmochronometer of the supernova neutrino process"

P. von Neumann-Cosel·A. Richter·A. Byelikov
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Abstract

The nuclear chosmochronometer suggested by Hayakawa et al. [Phys. Rev.C 77, 065802 (2008)] based on the 138La-138Ce-136Ce abundance ratio in presolar grains would be affected by the existence of a hitherto unknown low-energy 1+ state in 138La. Results of a recent high-resolution study of the 138Ba(3He,t) reaction under kinematics selectively populating 1+ states in 138La through Gamow-Teller transitions provides strong evidence against the existence of such a hypothetical state.

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P. von Neumann-Cosel, A. Richter, A. Byelikov. 2009-02-11. Comment on "138La-138Ce-136Ce nuclear cosmochronometer of the supernova neutrino process". https://doi.org/10.1103/physrevc.79.059801

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