Very small (n,γ) cross sections: two measurements for primordial and stellar nucleosynthesis.

Details Very small (n,γ) cross sections: two measurements for primordial and stellar nucleosynthesis. Very small (n,γ) cross sections: two measurements for primordial and stellar nucleosynthesis.

Apr 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989nuas.conf...25r&link_type=abstract

"Proceedings of the 5th Workshop on Nuclear

Computer Science

Nuclear Reactions, Nucleosynthesis

Scientific paper

The measurement of neutron capture cross sections via the activation technique has been extended to cross sections in the μb range. The knowledge of small cross sections is important for the abundances of neutron magic nuclei, for the role of neutron poisons, and for primordial nucleosynthesis. Wherever the activation technique can be applied, such small cross sections can be determined with significantly improved accuracy, as is demonstrated for the examples of 7Li and 208Pb. In both cases, significantly smaller cross sections were obtained compared to previous results, and uncertainties were reduced by more than a factor two.

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