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Report No.

Single-neutron orbits near $$^{78}$$Ni; Spectroscopy of the N=49 isotope $$^{79}$$Zn

Orlandi, R.  ; M$"u$cher, D.*; Raabe, R.*; Jungclaus, A.*; Pain, S. D.*; Bildstein, V.*; Chapman, R.*; De Angelis, G.*; Johansen, J. G.*; Van Duppen, P.*; Andreyev, A. N.*; Bottoni, S.*; Cocolios, T. E.*; De Witte, H.*; Diriken, J.*; Elseviers, J.*; Flavigny, F.*; Gaffney, L. P.*; Gernh$"a$user, R.*; Gottardo, A.*; Huyse, M.*; Illana, A.*; Konki, J.*; Kr$"o$ll, T.*; Kr$"u$cken, R.*; Lane, J. F. W.*; Liberati, V.*; Marsh, B.*; Nowak, K.*; Nowacki, F.*; Pakarinen, J.*; Rapisarda, E.*; Recchia, F.*; Reiter, P.*; Roger, T.*; Sahin, E.*; Seidlitz, M.*; Sieja, K.*; Smith, J. F.*; Valiente-Dob$'o$n, J. J.*; von Schmid, M.*; Voulot, D.*; Warr, N.*; Wenander, F. K.*; Wimmer, K.*

Single-neutron states in $$^{79}$$Zn have been populated using the reaction $$^{78}$$Zn(d,p) at REX-Isolde, CERN. The analysis reveals that the lowest excited states in $$^{79}$$Zn lie at approximately 1 MeV, and involve neutron orbits above the N=50 shell gap. A 5/2$$^{+}$$ configuration was assigned to the 983-keV state. Comparison with large-scale shell model calculations supports a robust neutron N=50 shell closure for $$^{78}$$Ni. These data constitute an important step towards the understanding the magicity of $$^{78}$$Ni and the structure of nuclei in the region.



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Category:Astronomy & Astrophysics



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