The Re/Os Clock Revisited

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The purpose of the proposed project of an accurate measurement of the relevant neutron cross sections of $^{186}$Os and $^{187}$Os is to remove the principal nuclear physics uncertainties in the analysis of the Re/Os cosmochronometer. The necessary cross section information will be obtained in compl...

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Detalles Bibliográficos
Autores principales: Ferrari, A, Leal, L C, Kitis, G, Guber, K H, Quaranta, A, Koehler, P E
Lenguaje:eng
Publicado: 2002
Acceso en línea:http://cds.cern.ch/record/5849
Descripción
Sumario:The purpose of the proposed project of an accurate measurement of the relevant neutron cross sections of $^{186}$Os and $^{187}$Os is to remove the principal nuclear physics uncertainties in the analysis of the Re/Os cosmochronometer. The necessary cross section information will be obtained in complementary experiments at the nTOF facility at CERN and at the Karlsruhe Van de Graaff accelerator. Transformation of these results into significantly improved stellar reaction rates will allow to evaluate the age of the elements in the framework of galactic chemical evolution models.

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