Constraints on the Lu-176 cosmochronometer

Details Constraints on the Lu-176 cosmochronometer Constraints on the Lu-176 cosmochronometer

Mar 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988japa....9....7d&link_type=abstract

Journal of Astrophysics and Astronomy (ISSN 0250-6335), vol. 9, March 1988, p. 7-15. Research supported by the Australian Instit

Astronomy and Astrophysics

Astrophysics

1

Astrophysics, Lutetium Isotopes, Nuclear Fusion, Trapped Particles, Ground State, Solar System

Scientific paper

In an endeavour to resolve reported discrepancies in the value of the branching ratio of 176Lu at astrophysical energies, a new determination of the 175Lu(nγ) 176mLu capture cross section has been measured as 958±58 mb. This gives a value of the branching ratio of 0.21±0.05. This result indicates that some reequilibration of the ground and isomeric states of 176Lu occurs in stellar environments undergoing s-process nucleosynthesis, and confirms that 176Lu is not a reliable cosmochronometer.

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