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

Shand, Callum, Podolyak, Zsolt, Górska, M., Doornenbal, P., Obertelli, A., Nowacki, F., Otsuka, T., Sieja, K., Tostevin, Jeffrey, Tsunoda, Y. , Authelet, G., Baba, H., Calvet, D., Château, A., Chen, S., Corsi, A., Delbart, A., Gheller, J.M., Giganon, A., Gillibert, A., Isobe, T., Lapoux, V., Matsushita, M., Momiyama, S., Motobayashi, T., Niikura, M., Otsu, H., Paul, N., Péron, C., Peyaud, A., Pollacco, E.C., Roussé, J.-Y., Sakurai, H., Santamaria, C., Sasano, M., Shiga, Y., Steppenbeck, D., Takeuchi, S., Taniuchi, R., Uesaka, T., Wang, H., Yoneda, K., Ando, T., Arici, T., Blazhev, A., Browne, F., Bruce, A.M., Carroll, R.J., Chung, L.X., Cortés, M.L., Dewald, M., Ding, B., Dombrádi, Zs., Flavigny, F., Franchoo, S., Giacoppo, F., Gottardo, A., Hadyńska-Klęk, 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, S., Nita, C.R., Nobs, C.R., Olivier, L., Ota, S., Orlandi, R., Patel, Z., Regan, P.H., Rudigier, Matthias, Şahin, E., Saito, T., Söderström, P.-A., Stefan, I., Sumikama, T., Suzuki, D., Vajta, Zs., Vaquero, V., Werner, V., Wimmer, K., Wu, J. and Xu, Z.Y. (2017) Shell evolution beyond Z = 28 and N = 50: Spectroscopy of 81,82,83,84 Zn Physics Letters B, 773. pp. 492-497.

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Abstract

We report on the measurement of new low-lying states in the neutron-rich 81,82,83,84Zn nuclei via in-beam γ -ray spectroscopy. These include the View the MathML source41+→21+ transition in 82Zn, the View the MathML source21+→0g.s.+ and View the MathML source41+→21+ transitions in 84Zn, and low-lying states in 81,83Zn were observed for the first time. The reduced View the MathML sourceE(21+) energies and increased View the MathML sourceE(41+)/E(2+1) ratios at N=52N=52, 54 compared to those in 80Zn attest that the magicity is confined to the neutron number N=50N=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+2+ and 4+4+ levels in 84Zn 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.

Item Type: Article
Divisions : Faculty of Engineering and Physical Sciences > Physics
Authors :
NameEmailORCID
Shand, Callumc.shand@surrey.ac.uk
Podolyak, ZsoltZ.Podolyak@surrey.ac.uk
Górska, M.
Doornenbal, P.
Obertelli, A.
Nowacki, F.
Otsuka, T.
Sieja, K.
Tostevin, JeffreyJ.Tostevin@surrey.ac.uk
Tsunoda, Y.
Authelet, G.
Baba, H.
Calvet, D.
Château, A.
Chen, S.
Corsi, A.
Delbart, A.
Gheller, J.M.
Giganon, A.
Gillibert, A.
Isobe, T.
Lapoux, V.
Matsushita, M.
Momiyama, S.
Motobayashi, T.
Niikura, M.
Otsu, H.
Paul, N.
Péron, C.
Peyaud, A.
Pollacco, E.C.
Roussé, J.-Y.
Sakurai, H.
Santamaria, C.
Sasano, M.
Shiga, Y.
Steppenbeck, D.
Takeuchi, S.
Taniuchi, R.
Uesaka, T.
Wang, H.
Yoneda, K.
Ando, T.
Arici, T.
Blazhev, A.
Browne, F.
Bruce, A.M.
Carroll, R.J.
Chung, L.X.
Cortés, M.L.
Dewald, M.
Ding, B.
Dombrádi, Zs.
Flavigny, F.
Franchoo, S.
Giacoppo, F.
Gottardo, A.
Hadyńska-Klęk, 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, S.
Nita, C.R.
Nobs, C.R.
Olivier, L.
Ota, S.
Orlandi, R.
Patel, Z.
Regan, P.H.
Rudigier, Matthiasm.rudigier@surrey.ac.uk
Şahin, E.
Saito, T.
Söderström, P.-A.
Stefan, I.
Sumikama, T.
Suzuki, D.
Vajta, Zs.
Vaquero, V.
Werner, V.
Wimmer, K.
Wu, J.
Xu, Z.Y.
Date : 10 October 2017
Identification Number : 10.1016/j.physletb.2017.09.001
Copyright Disclaimer : © 2017 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). Funded by SCOAP.
Depositing User : Clive Harris
Date Deposited : 18 Sep 2017 09:09
Last Modified : 15 Mar 2018 08:41
URI: http://epubs.surrey.ac.uk/id/eprint/842307

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