par Renstrøm, Therese;Nyhus, Hilde Therese;Utsunomiya, Hiroaki;Schwengner, Ronald;Goriely, Stéphane 
;Larsen, Ann-Cecilie;Filipescu, Dan Mihai;G Grainger, Roy;Bernstein, L.A.;Bleuel, D.L.;Glodariu, T.;Görgen, Andreas;Guttormsen, Magne;Hagen, T.W.;Kheswa, B.V.;Lui, Yiu-Wing;Negi, D.;Ruud, I.E.;Shima, T.;Siem, Sunniva;Takahisa, K.;Tesileanu, O.;Tornyi, T.G.;Tveten, G.M.;Wiedeking, M.
Référence Physical review. C. Nuclear physics, 93, page (064302)
Publication Publié, 2016-06-02
;Larsen, Ann-Cecilie;Filipescu, Dan Mihai;G Grainger, Roy;Bernstein, L.A.;Bleuel, D.L.;Glodariu, T.;Görgen, Andreas;Guttormsen, Magne;Hagen, T.W.;Kheswa, B.V.;Lui, Yiu-Wing;Negi, D.;Ruud, I.E.;Shima, T.;Siem, Sunniva;Takahisa, K.;Tesileanu, O.;Tornyi, T.G.;Tveten, G.M.;Wiedeking, M.Référence Physical review. C. Nuclear physics, 93, page (064302)
Publication Publié, 2016-06-02
Article révisé par les pairs
| Résumé : | The γ -ray strength functions and level densities of 73,74Ge have been extracted up to the neutron-separationenergy Sn from particle-γ coincidence data using the Oslo method. Moreover, the γ -ray strength function of74Ge above Sn has been determined from photoneutron measurements; hence these two experiments cover therange of Eγ≈ 1–13 MeV for 74Ge. The obtained data show that both 73,74Ge display an increase in strength atlow γ energies. The experimental γ -ray strength functions are compared with M1 strength functions deducedfrom average B(M1) values calculated within the shell model for a large number of transitions. The observedlow-energy enhancements in 73,74Ge are adopted in the calculations of the 72,73Ge(n,γ ) cross sections, wherethere are no direct experimental data. Calculated reaction rates for more neutron-rich germanium isotopes areshown to be strongly dependent on the presence of the low-energy enhancement. |
