Shell evolution beyond =28 and =50; Spectroscopy of Zn

=28と=50を超える型殻進化; Znの核分光

Shand, C. M.*; Podolyk, Zs.*; Grska, M.*; Doornenbal, P.*; Obertelli, A.*; Nowacki, F.*; Otsuka, T.*; Sieja, K.*; Tostevin, J. A.*; Tsunoda, T.*; Authelet, G.*; 馬場 秀忠*; Calvet, D.*; Chteau, A.*; Chen, S.*; Corsi, A.*; Delbart, A.*; Gheller, J. M.*; Giganon, A.*; Gillibert, A.*; Isobe, T.*; Lapoux, V.*; 松下 昌史*; Momiyama, S.*; 本林 透*; 新倉 潤*; 大津 秀暁*; Paul, N.*; Pron, C.*; Peyaud, A.*; Pollacco, E. C.*; Rouss, J.-Y.*; 櫻井 博儀*; Santamaria, C.*; 笹野 匡紀*; Shiga, Y.*; Steppenbeck, D.*; 武内 聡*; Taniuchi, R.*; Uesaka, T.*; Wang, H.*; 米田 晃*; Ando, T.*; Arici, T.*; Blazhev, A.*; Browne, F.*; Bruce, A. M.*; Carroll, R. J.*; Chung, L. X.*; Corts, M. L.*; Dewald, M.*; Ding, B.*; Dombrdi, Zs.*; Flavigny, F.*; Franchoo, S.*; Giacoppo, F.*; Gottardo, A.*; Hadyska-Klk, K.*; Jungclaus, A.*; Korkulu, Z.*; Koyama, S.*; Kubota, Y.*; Lee, J.*; Lettmann, M.*; Linh, B. D.*; Liu, J.*; Liu, Z.*; Lizarazo, C.*; Louchart, C.*; Lozeva, R.*; Matsui, K.*; Miyazaki, T.*; Moschner, K.*; Nagamine, M.*; Nakatsuka, N.*; 西村 俊二*; Nita, C. R.*; Nobs, C. R.*; Olivier, L.*; Ota, S.*; Orlandi, R.  ; Patel, Z.*; Regan, P. H.*; Rudigier, M.*; ahin, E.*; Saito, T.*; Sderstrm, P.-A.*; Stefan, I.*; 炭竃 聡之*; 鈴木 大介*; Vajta, Zs.*; Vaquero, V.*; Werner, V.*; Wimmer, K.*; Wu, J.*; Xu, Z. Y.*

Shand, C. M.*; Podolyk, Zs.*; Grska, M.*; Doornenbal, P.*; Obertelli, A.*; Nowacki, F.*; Otsuka, T.*; Sieja, K.*; Tostevin, J. A.*; Tsunoda, T.*; Authelet, G.*; Baba, Hidetada*; Calvet, D.*; Chteau, A.*; Chen, S.*; Corsi, A.*; Delbart, A.*; Gheller, J. M.*; Giganon, A.*; Gillibert, A.*; Isobe, T.*; Lapoux, V.*; Matsushita, Masafumi*; Momiyama, S.*; Motobayashi, Toru*; Niikura, Megumi*; Otsu, Hideaki*; Paul, N.*; Pron, C.*; Peyaud, A.*; Pollacco, E. C.*; Rouss, J.-Y.*; Sakurai, Hiroyoshi*; Santamaria, C.*; Sasano, Masaki*; Shiga, Y.*; Steppenbeck, D.*; Takeuchi, Satoshi*; Taniuchi, R.*; Uesaka, T.*; Wang, H.*; Yoneda, Akira*; Ando, T.*; Arici, T.*; Blazhev, A.*; Browne, F.*; Bruce, A. M.*; Carroll, R. J.*; Chung, L. X.*; Corts, M. L.*; Dewald, M.*; Ding, B.*; Dombrdi, Zs.*; Flavigny, F.*; Franchoo, S.*; Giacoppo, F.*; Gottardo, A.*; Hadyska-Klk, K.*; Jungclaus, A.*; Korkulu, Z.*; Koyama, S.*; Kubota, Y.*; Lee, J.*; Lettmann, M.*; Linh, B. D.*; Liu, J.*; Liu, Z.*; Lizarazo, C.*; Louchart, C.*; Lozeva, R.*; Matsui, K.*; Miyazaki, T.*; Moschner, K.*; Nagamine, M.*; Nakatsuka, N.*; Nishimura, Shunji*; Nita, C. R.*; Nobs, C. R.*; Olivier, L.*; Ota, S.*; Orlandi, R.; Patel, Z.*; Regan, P. H.*; Rudigier, M.*; ahin, E.*; Saito, T.*; Sderstrm, P.-A.*; Stefan, I.*; Sumikama, Toshiyuki*; Suzuki, Daisuke*; Vajta, Zs.*; Vaquero, V.*; Werner, V.*; Wimmer, K.*; Wu, J.*; Xu, Z. Y.*

Low-lying states in neutron-rich Zn nuclei were measured for the first time via in-beam -ray spectroscopy at RIKEN. These include the 4 to 2 in Zn and the 2 to 0 and 4 to 2 in Zn. The reduced E() energies and increased E(4)/E(2) ratios at =52,54 compared to Zn attest that the magicity is confined just on the neutron number =50 only. The levels observed in Zn suggest the onset of deformation towards heavier Zn isotopes. The data were compared to state-of-the-art shell model calculations.