Shell evolution beyond Z = 28 and N = 50: Spectroscopy of 81,82,83,84 Zn

Citation data:

Physics Letters B, ISSN: 0370-2693, Vol: 773, Page: 492-497

Publication Year:
2017
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DOI:
10.1016/j.physletb.2017.09.001
Author(s):
C. M. Shand, Zs Podolyák, J. A. Tostevin, R. J. Carroll, Z. Patel, P. H. Regan, M. Rudigier, M. Górska, T. Arici, M. L. Cortés, F. Giacoppo, C. Lizarazo, P. Doornenbal, A. Obertelli, H. Baba, S. Chen, T. Isobe, S. Momiyama, T. Motobayashi, H. Otsu, N. Paul, H. Sakurai, C. Santamaria, M. Sasano, Y. Shiga, D. Steppenbeck, S. Takeuchi, R. Taniuchi, T. Uesaka, H. Wang, K. Yoneda, T. Ando, S. Koyama, Y. Kubota, K. Matsui, T. Miyazaki, M. Nagamine, N. Nakatsuka, S. Nishimura, T. Saito, P. A. Söderström, K. Wimmer, J. Wu, G. Authelet, D. Calvet, A. Château, A. Corsi, A. Delbart, J. M. Gheller, A. Giganon, A. Gillibert, V. Lapoux, C. Péron, A. Peyaud, E. C. Pollacco, J. Y. Roussé, F. Nowacki, K. Sieja, R. Lozeva, T. Otsuka, Y. Tsunoda, M. Matsushita, S. Ota, M. Niikura, A. Blazhev, M. Dewald, K. Moschner, F. Browne, A. M. Bruce, C. R. Nobs, L. X. Chung, B. D. Linh, M. Lettmann, C. Louchart, V. Werner, B. Ding, Z. Liu, Zs Dombrádi, Z. Korkulu, Zs Vajta, F. Flavigny, S. Franchoo, A. Gottardo, L. Olivier, I. Stefan, D. Suzuki, K. Hadyńska-Klęk, E. Şahin, A. Jungclaus, V. Vaquero, J. Lee, J. Liu, Z. Y. Xu, C. R. Nita, R. Orlandi, T. Sumikama Show More Hide
Publisher(s):
Elsevier BV
Tags:
Physics and Astronomy
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article description
We report on the measurement of new low-lying states in the neutron-rich 81,82,83,84 Zn nuclei via in-beam γ -ray spectroscopy. These include the 41+→21+ transition in 82 Zn, the 21+→0g.s.+ and 41+→21+ transitions in 84 Zn, and low-lying states in 81,83 Zn were observed for the first time. The reduced E(21+) energies and increased E(41+)/E(2+1) ratios at N=52, 54 compared to those in 80 Zn attest that the magicity is confined to the neutron number N=50 only. The deduced level schemes are compared to three state-of-the-art shell model calculations and a good agreement is observed with all three calculations. The newly observed 2+ and 4+ levels in 84 Zn suggest the onset of deformation towards heavier Zn isotopes, which has been incorporated by taking into account the upper sdg orbitals in the Ni78-II and the PFSDG-U models.

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