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

中性子過剰同位体$$^{69,71,73}$$Coの殻構造

Lokotko, T.*; Leblond, S.*; Lee, J.*; Doornenbal, P.*; Obertelli, A.*; Poves, A.*; Nowacki, F.*; 緒方 一介*; 吉田 数貴; Authelet, G.*; 馬場 秀忠*; Calvet, D.*; Ch$^a$teau, F.*; Chen, S.*; Corsi, A.*; Delbart, A.*; Gheller, J.-M.*; Gillibert, A.*; 磯部 忠昭*; Lapoux, V.*; 松下 昌史*; 籾山 悟至*; 本林 透*; 新倉 潤*; 大津 秀暁*; P$'e$ron, C.*; Peyaud, A.*; Pollacco, E. C.*; Rouss$'e$, J.-Y.*; 櫻井 博儀*; Santamaria, C.*; Xu, Z. Y.*; 笹野 匡紀*; Shiga, Y.*; Takeuchi, S.*; Taniuchi, R.*; 上坂 友洋*; Wang, H.*; Werner, V.*; Browne, F.*; Chung, L. X.*; Dombradi, Zs.*; Franchoo, S.*; Giacoppo, F.*; Gottardo, A.*; Hadynska-Klek, K.*; Korkulu, Z.*; Koyama, S.*; 久保田 悠樹*; Lettmann, M.*; Louchart, C.*; Lozeva, R.*; Matsui, K.*; Miyazaki, T.*; 西村 俊二*; Olivier, L.*; 大田 晋輔*; Patel, Z.*; Sahin, E.*; Shand, C.*; S$"o$derstr$"o$m, P.-A.*; Stefan, I.*; Steppenbeck, D.*; 炭竃 聡之*; 鈴木 大介*; Vajta, Zs.*; Wu, J.*

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.*

中性子過剰核である$$^{69,71,73}$$Coに対する($$p,2p$$)ノックアウト反応が理化学研究所RIBFで測定された。$$gamma-gamma$$ coincidenceの方法で準位構造が決定され、測定された包括的断面積および排他的断面積から暫定的ではあるがスピン・パリティが決定された。殻模型計算との比較により、$$^{69,71,73}$$Coの低励起状態には球形核と変形核が共存することが示唆された。

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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パーセンタイル:100

分野:Physics, Nuclear

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