| Article | |
| Title | Study of the deformation-driving $\nu d_{5/2}$ orbital in $^{67}_{28}$Ni$_{39}$ using one-neutron transfer reactions |
| Author(s) | Diriken, J. (Leuven U. ; SCK-CEN, Mol) ; Patronis, N. (Ioannina U. ; Leuven U.) ; Andreyev, A.N. (JAERI, Tokai ; York U., England ; Leuven U.) ; Antalic, S. (Comenius U.) ; Bildstein, V. (Munich, Tech. U.) ; Blazhev, A. (U. Cologne) ; Darby, I.G. (Leuven U.) ; De Witte, H. (Leuven U.) ; Eberth, J. (U. Cologne) ; Elseviers, J. (Leuven U.) ; Fedosseev, V.N. (CERN) ; Flavigny, F. (Leuven U.) ; Fransen, Ch. (U. Cologne) ; Georgiev, G. (CSNSM, Orsay) ; Gernhauser, R. (Munich, Tech. U.) ; Hess, H. (U. Cologne) ; Huyse, M. (Leuven U.) ; Jolie, J. (U. Cologne) ; Kröll, Th. (Munich, Tech. U.) ; Krücken, R. (Munich, Tech. U.) ; Lutter, R. (Munich U.) ; Marsh, B.A. (CERN) ; Mertzimekis, T. (Democritos Nucl. Res. Ctr.) ; Muecher, D. (Munich, Tech. U.) ; Nowacki, F. (U. Strasbourg ; Strasbourg, IPHC) ; Orlandi, R. (Glasgow U. ; West Scotland U. ; Leuven U.) ; Pakou, A. (Ioannina U.) ; Raabe, R. (Leuven U.) ; Randisi, G. (Leuven U.) ; Reiter, P. (U. Cologne) ; Roger, T. (Leuven U.) ; Seidlitz, M. (U. Cologne) ; Seliverstov, M. (CERN ; Leuven U.) ; Sieja, K. (U. Strasbourg ; Strasbourg, IPHC) ; Sotty, C. (CSNSM, Orsay) ; Tornqvist, H. (CERN) ; Van De Walle, J. (CERN) ; Van Duppen, P. (Leuven U.) ; Voulot, D. (CERN) ; Warr, N. (U. Cologne) ; Wenander, F. (CERN) ; Wimmer, K. (Munich, Tech. U. ; Central Michigan U.) |
| Publication | 2014 |
| In: | Phys. Lett. B 736 (2014) pp.533-538 Phys. Lett. B 743 (2015) pp.543 (Erratum) |
| DOI | 10.1016/j.physletb.2014.08.004 10.1016/j.physletb.2015.02.055 (Erratum) |
| Subject category | Nuclear Physics - Experiment |
| Accelerator/Facility, Experiment | CERN ISOLDE ; IS469 |
| Abstract | The $νg_{9/2} , d_{5/2}, s_{1/2}$ orbitals are assumed to be responsible for the swift onset of collectivity observed in the region below $^{68}$Ni. Especially the single-particle energies and strengths of these orbitals are of importance. We studied such properties in the nearby $^{67}$Ni nucleus, by performing a ($d, p$)-experiment in inverse kinematics employing a post-accelerated radioactive ion beam (RIB) at the REX-ISOLDE facility. The experiment was performed at an energy of 2.95 MeV / u using a combination of the T-REX particle detectors, the Miniball $\gamma$-detection array and a newly-developed delayed-correlation technique as to investigate $\mu$s-isomers. Angular distributions of the ground state and multiple excited states in $^{67}$Ni were obtained and compared with DWBA cross-section calculations, leading to the identification of positive-parity states with substantial $νg_{9/2}$ (1007 keV) and $νd_{5/2}$ (2207 keV and 3277 keV) single- particle strengths up to an excitation energy of 5.8 MeV. 50% of the $νd_{5/2}$ single-particle strength relative to the $νg_{9/2}$-orbital is concentrated in and shared between the first two observed 5/2$^{+}$ levels. A comparison with extended Shell Model calculations and equivalent ($^{3}$He, $d$) studies in the region around $^{90}_{40}$Zr$_{50}$ highlights similarities for the strength of the negative-parity pf and positive-parity $g_{9/2}$ state, but differences are observed for the $d_{5/2}$ single-particle strength. |
| Copyright/License | publication: © 2014-2024 The Author(s) (License: CC-BY-3.0), sponsored by SCOAP³ |
Corresponding record in: Inspire
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