Comment on ''{sup 138}La-{sup 138}Ce-{sup 136}Ce nuclear cosmochronometer of the supernova neutrino process''

Journal Article · Fri May 15 04:00:00 EDT 2009 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PHYSREVC.79.059801· OSTI ID:21293738

Neumann-Cosel, P von; Byelikov, A ^[1]; Richter, A ^[1]

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1. Institut fuer Kernphysik, Technische Universitaet Darmstadt, D-64289 Darmstadt (Germany)

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

• OSTI ID: 21293738
• Journal Information: Physical Review. C, Nuclear Physics, Journal Name: Physical Review. C, Nuclear Physics Journal Issue: 5 Vol. 79; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BARIUM 138
CERIUM 136
CERIUM 138
GAMOW-TELLER RULES
HELIUM 3
LANTHANUM 138
NEUTRINOS
NUCLEAR REACTIONS
RESOLUTION