Stellar neutron capture cross sections of the Ba isotopes.

Details Stellar neutron capture cross sections of the Ba isotopes. Stellar neutron capture cross sections of the Ba isotopes.

Mar 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994sncc.book.....v&link_type=abstract

Stellar neutron capture cross sections of the Ba isotopes., by Voss, F.; Wisshak, K.; Guber, K.; Käppeler, F.; Reffo, G.. Kernf

Physics

1

Scientific paper

The neutron capture cross sections of 134Ba, 135Ba, 136Ba, and 137Ba were measured in the energy range from 5 to 225 keV. Neutrons were produced via the 7Li(p, n)7Be reaction by bombarding metallic Li targets with a pulsed proton beam. Maxwellian averaged neutron capture cross sections were calculated for thermal energies between kT = 10 keV and 100 keV. These stellar cross sections were used in an s-process analysis. The new cross sections are also important for the interpretation of barium isotopic anomalies, which were recently discovered in SiC grains of carbonaceous chondrite meteorites.

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