Photoactivation of 180Tam: Does it affect s-process nucleosynthesis of nature's rarest stable isotope?

Details Photoactivation of 180Tam: Does it affect s-process nucleosynthesis of nature's rarest stable isotope? Photoactivation of 180Tam: Does it affect s-process nucleosynthesis of nature's rarest stable isotope?

Jul 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000aipc..529..681v&link_type=abstract

CAPTURE GAMMA-RAY SPECTROSCOPY AND RELATED TOPICS: 10th International Symposium. AIP Conference Proceedings, Volume 529, pp. 68

Physics

Photon Absorption And Scattering, Hydrostatic Stellar Nucleosynthesis, 150<=A<=189

Scientific paper

The depopulation of the quasistable isomer (Jπ=9-, Ex=75 keV) in 180Ta through resonant photoabsorption was studied with intense bremsstrahlung. The results show evidence for a deexciting level with an energy of 1.085 MeV or below, leading to a dramatic acceleration of the isomer decay to the short-lived Jπ=1+ ground state under stellar s-process conditions. Consequences for a possible nucleosynthesis of nature's rarest isotope 180Ta within the s process are discussed. .

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