Low-lying excitations inNi72

• DOI: 10.1103/physrevc.93.034328
• Publication Date: 2016-03-22T18:08:20Z
• Authors: A. I. Morales; G. Benzoni; H. Watanabe; S. Nishimura; F. Browne; R. Daido; P. Doornenbal; Y. Fang; G. Lorusso; Z. Patel; S. Rice; L. Sinclair; P.-A. Söderström; T. Sumikama; J. Wu; Z. Y. Xu; A. Yagi; R. Yokoyama; H. Baba; R. Avigo; F. L. Bello Garrote; N. Blasi; A. Bracco; F. Camera; S. Ceruti; F. C. L. Crespi; G. de Angelis; M.-C. Delattre; Zs. Dombradi; A. Gottardo; T. Isobe; I. Kojouharov; N. Kurz; I. Kuti; K. Matsui; B. Melon; D. Mengoni; T. Miyazaki; V. Modamio-Hoyborg; S. Momiyama; D. R. Napoli; M. Niikura; R. Orlandi; H. Sakurai; E. Sahin; D. Sohler; H. Shaffner; R. Taniuchi; J. Taprogge; Zs. Vajta; J. J. Valiente-Dobón; O. Wieland; M. Yalcinkaya
• Keywords: Nuclear and High Energy Physics; [PHYS.NEXP] Physics [physics]/Nuclear Experiment [nucl-ex]; QC Physics / fizika; 0103 physical sciences; [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex]; 01 natural sciences

Low-lying excited states in $^{72}\mathrm{Ni}$ have been investigated an in-flight fission experiment at the RIBF facility of RIKEN Nishina Center. The combination state-of-the-art BigRIPS and EURICA setups has allowed for a very accurate study $\ensuremath{\beta}$ decay from $^{72}\mathrm{Co}$ to $^{72}\mathrm{Ni}$, provided first experimental information on sequence $^{72}\mathrm{Fe}\ensuremath{\rightarrow}^{72}\mathrm{Co}\ensuremath{\rightarrow}^{72}\mathrm{Ni}$ delayed neutron-emission branch $^{73}\mathrm{Co}\ensuremath{\rightarrow}^{72}\mathrm{Ni}$. Accordingly, we report nearly 60 previously unobserved $\ensuremath{\gamma}$ transitions which deexcite 21 new levels $^{72}\mathrm{Ni}$. Evidence location so-sought-after $({4}_{2}^{+}),\phantom{\rule{0.16em}{0ex}}({6}_{2}^{+})$, $({8}_{1}^{+})$ seniority is provided. As well, existence low-spin $\ensuremath{\beta}$-decaying isomer odd-odd neutron-rich Co isotopes confirmed mass $A=72$. compared simple shell-model calculations including only neutron excitations across $fpg$ shells. It shown that, general, reproduce well observed states.