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The 3701 keV neutron g 9/2 single-particle state in 57Ni
Authors:D. Rudolph  D. Weisshaar  F. Cristancho  J. Eberth  C. Fahlander  O. Iordanov  S. Skoda  Ch. Teich  O. Thelen  H.G. Thomas
Affiliation:Department of Physics, Lund University, 22100 Lund, Sweden, SE
Institut für Kernphysik, Universit?t zu K?ln, 50937 K?ln, Germany, DE
II. Physikalisches Institut, Universit?t G?ttingen, 37073 G?ttingen, Germany, DE
Abstract:The neutron g 9/2 single-particle state in 57Ni has been unambiguously identified in a combined measurement of the linear polarization, angular distribution, and angular correlation of γ rays following the fusion-evaporation reaction 28Si(32S,2pn)57Ni at a beam energy of 90 MeV. The linear polarization was measured with a Euroball cluster detector and a prototype of an encapsulated six-fold segmented hexaconical Ge-detector. The spin of the 3701 keV level in 57Ni was confirmed to be I= 9/2 and its parity determined to be positive. Received: 24 September 1999 / Revised version: 22 October 1999
Keywords:PACS:21.10.Hw Spin, parity, and isobaric spin –   21.60.Cs Shell model –   23.20.En Angular distributions and correlation measurement –   27.40.+z 39 ≤   A ≤   58
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