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Report No.

Shell structure of the neutron-rich isotopes $$^{69,71,73}$$Co

Lokotko, T.*; Leblond, S.*; Lee, J.*; Doornenbal, P.*; Obertelli, A.*; Poves, A.*; Nowacki, F.*; Ogata, Kazuyuki*; Yoshida, Kazuki   ; Authelet, G.*; Baba, Hidetada*; Calvet, D.*; Ch$^a$teau, F.*; Chen, S.*; Corsi, A.*; Delbart, A.*; Gheller, J.-M.*; Gillibert, A.*; Isobe, Tadaaki*; Lapoux, V.*; Matsushita, Masafumi*; Momiyama, Satoru*; Motobayashi, Toru*; Niikura, Megumi*; Otsu, Hideaki*; P$'e$ron, C.*; Peyaud, A.*; Pollacco, E. C.*; Rouss$'e$, J.-Y.*; Sakurai, Hiroyoshi*; Santamaria, C.*; Xu, Z. Y.*; Sasano, Masaki*; Shiga, Y.*; Takeuchi, S.*; Taniuchi, R.*; Uesaka, Tomohiro*; Wang, H.*; Werner, V.*; Browne, F.*; Chung, L. X.*; Dombradi, Zs.*; Franchoo, S.*; Giacoppo, F.*; Gottardo, A.*; Hadynska-Klek, K.*; Korkulu, Z.*; Koyama, S.*; Kubota, Yuki*; Lettmann, M.*; Louchart, C.*; Lozeva, R.*; Matsui, K.*; Miyazaki, T.*; Nishimura, Shunji*; Olivier, L.*; Ota, Shinsuke*; Patel, Z.*; Sahin, E.*; Shand, C.*; S$"o$derstr$"o$m, P.-A.*; Stefan, I.*; Steppenbeck, D.*; Sumikama, Toshiyuki*; Suzuki, Daisuke*; Vajta, Zs.*; Wu, J.*

The structures of the neutron-rich $$^{69,71,73}$$Co isotopes were investigated via ($$p,2p$$) knockout reactions at the Radioactive Isotope Beam Factory, RIKEN. Level schemes were reconstructed using the $$gamma-gamma$$ coincidence technique, with tentative spin-parity assignments based on the measured inclusive and exclusive cross sections. Comparison with shell-model calculations suggests coexistence of spherical and deformed shapes at low excitation energies in the $$^{69,71,73}$$Co isotopes.



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Category:Physics, Nuclear



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