par Kheswa, B.V.;Wiedeking, M.;Giacoppo, F;Goriely, Stéphane ;Guttormsen, Magne;Larsen, Ann-Cecilie;Bello Garrote, F.L.;Eriksen, T.K.;Görgen, Andreas;Hagen, T.W.;Koehler, P.E.;Klintefjord, M.;Nyhus, Hilde Therese;Papka, P.;Renstrøm, Therese;Rose, S. J.;Sahin, E;Siem, Sunniva;Tornyi, T.
Référence Physics Letters B, 744, page (268)
Publication Publié, 2015-04-02
Référence Physics Letters B, 744, page (268)
Publication Publié, 2015-04-02
Article révisé par les pairs
Résumé : | The γ-ray strength functions and nuclear level densities of 138La and 139La have been measured below the neutron separation energies. These new data were used to calculate astrophysical Maxwellian-averaged (n, γ) cross-sections to investigate the production and destruction of the p-nucleus 138La in the photodisintegration process. The results confirm the underproduction of 138La in the p-process with respect to the observed abundances and strongly support the ν-process through νe capture on 138Ba as the main contributor to the synthesis of 138La in Type II supernovae. |