| Article | |
| Title | Experimental study of the $^{66}$Ni$(d,p)^{67}$Ni one-neutron transfer reaction |
| 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.) ; Orlandi, R. (Glasgow U. ; West Scotland U. ; JAERI, Tokai ; 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.) ; 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.) |
| Publication | 2015 |
| In: | Phys. Rev. C 91 (2015) 054321 |
| DOI | 10.1103/PhysRevC.91.054321 |
| Subject category | Nuclear Physics - Experiment |
| Accelerator/Facility, Experiment | CERN ISOLDE ; IS469 |
| Abstract | The quasi-SU(3) sequence of the positive parity $νg_{9/2}, d_{5/2}, s_{1/2}$ orbitals above the N=40 shell gap are assumed to induce strong quadrupole collectivity in the neutron-rich Fe (Z=26) and Cr (Z=24) isotopes below the nickel region. In this paper the position and strength of these single-particle orbitals are characterized in the neighborhood of $^{68}$Ni (Z=28,N=40) through the $^{66}$Ni($d,p$)$^{67}$Ni one-neutron transfer reaction at 2.95 MeV/nucleon in inverse kinematics, performed at the REX-ISOLDE facility in CERN. A combination of the Miniball $\gamma$-array and T-REX particle-detection setup was used and a delayed coincidence technique was employed to investigate the 13.3-$\mu$s isomer at 1007 keV in $^{67}$Ni. Excited states up to an excitation energy of 5.8 MeV have been populated. Feeding of the $νg_{9/2}$ (1007 keV) and $νd_{5/2}$ (2207 keV and 3277 keV) positive-parity neutron states and negative parity ($νpf$) states have been observed at low excitation energy. The extracted relative spectroscopic factors, based on a distorted-wave Born approximation analysis, show that the $νd_{5/2}$ single-particle strength is mostly split over these two excited states. The results are also compared to the distribution of the proton single-particle strength in the $^{90}$Zr region (Z=40,N=50). |
| Copyright/License | publication: © 2015-2025 The Author(s) (License: CC-BY-3.0) |
Record created 2016-01-13, last modified 2022-08-10
