EPJ Web of Conferences (Jan 2017)
Isomer-delayed gamma-ray spectroscopy of neutron-rich 166Tb
- Gurgi L.A.,
- Regan P.H.,
- Söderström P.-A.,
- Watanabe H.,
- Walker P.M.,
- Podolyák Zs.,
- Nishimura S.,
- Berry T.A.,
- Doornenbal P.,
- Lorusso G.,
- Isobe T.,
- Baba H.,
- Xu Z.Y.,
- Sakurai H.,
- Sumikama T.,
- Catford W.N.,
- Bruce A.M.,
- Browne F.,
- Lane G.J.,
- Kondev F.G.,
- Odahara A.,
- Wu J.,
- Liu H.L.,
- Xu F.R.,
- Korkulu Z.,
- Lee P.,
- Liu J.J.,
- Phong V.H.,
- Yagi A.,
- Zhang G.X.,
- Alharbi T.,
- Carroll R.J.,
- Chae K.Y.,
- Dombradi Zs.,
- Estrade A.,
- Fukuda N.,
- Griffin C.,
- Ideguchi E.,
- Inabe N.,
- Kanaoka H.,
- Kojouharov I.,
- Kubo T.,
- Kubono S.,
- Kurz N.,
- Kuti I.,
- Lalkovski S.,
- Lee E.J.,
- Lee C.S.,
- Lotay G.,
- Moon C.B.,
- Nishizuka I.,
- Nita C.R.,
- Patel Z.,
- Roberts O.J.,
- Schaffner H.,
- Shand C.M.,
- Suzuki H.,
- Takeda H.,
- Terashima S.,
- Vajta Zs.,
- Kanaya S.,
- Valiente-Dobòn J.J.
Affiliations
- Gurgi L.A.
- Department of Physics, University of Surrey
- Regan P.H.
- Nuclear Engineering Division, Argonne National Laboratory
- Söderström P.-A.
- RIKEN Nishina Center
- Watanabe H.
- Walker P.M.
- Department of Physics, University of Surrey
- Podolyák Zs.
- Department of Physics, University of Surrey
- Nishimura S.
- RIKEN Nishina Center
- Berry T.A.
- Department of Physics, University of Surrey
- Doornenbal P.
- RIKEN Nishina Center
- Lorusso G.
- Isobe T.
- RIKEN Nishina Center
- Baba H.
- RIKEN Nishina Center
- Xu Z.Y.
- Sakurai H.
- Sumikama T.
- Catford W.N.
- Department of Physics, University of Surrey
- Bruce A.M.
- School of Computing, Engineering and Mathematics, University of Brighton
- Browne F.
- School of Computing, Engineering and Mathematics, University of Brighton
- Lane G.J.
- Kondev F.G.
- Nuclear Engineering Division, Argonne National Laboratory
- Odahara A.
- Department of Physics, Osaka University
- Wu J.
- Liu H.L.
- Department of Applied Physics, School of Science
- Xu F.R.
- School of Physics, Peking University
- Korkulu Z.
- Lee P.
- Department of Physics, Chung-Ang University
- Liu J.J.
- Institute for Nuclear Research, Hungarian Academy of Sciences
- Phong V.H.
- Yagi A.
- Department of Physics, Osaka University
- Zhang G.X.
- Department of Applied Physics, School of Science
- Alharbi T.
- Department of Physics, College of Science in Zulfi, Almajmaah University
- Carroll R.J.
- Department of Physics, University of Surrey
- Chae K.Y.
- Department of Physics, Sungkyunkwan University
- Dombradi Zs.
- Institute for Nuclear Research, Hungarian Academy of Sciences
- Estrade A.
- Fukuda N.
- RIKEN Nishina Center
- Griffin C.
- School of Physics and Astronomy, University of Edinburgh
- Ideguchi E.
- Inabe N.
- RIKEN Nishina Center
- Kanaoka H.
- Department of Physics, Osaka University
- Kojouharov I.
- GSI Helmholtzzentrum für Schwerionenforschung GmbH
- Kubo T.
- RIKEN Nishina Center
- Kubono S.
- RIKEN Nishina Center
- Kurz N.
- GSI Helmholtzzentrum für Schwerionenforschung GmbH
- Kuti I.
- Institute for Nuclear Research, Hungarian Academy of Sciences
- Lalkovski S.
- Department of Physics, University of Surrey
- Lee E.J.
- Department of Physics, Sungkyunkwan University
- Lee C.S.
- Department of Physics, Chung-Ang University
- Lotay G.
- Department of Physics, University of Surrey
- Moon C.B.
- Hoseo University, Asan
- Nishizuka I.
- Department of Physics, Tohoku University
- Nita C.R.
- Patel Z.
- Department of Physics, University of Surrey
- Roberts O.J.
- School of Physics, University College Dublin
- Schaffner H.
- GSI Helmholtzzentrum für Schwerionenforschung GmbH
- Shand C.M.
- Department of Physics, University of Surrey
- Suzuki H.
- RIKEN Nishina Center
- Takeda H.
- RIKEN Nishina Center
- Terashima S.
- School of Physics and Nuclear Energy Engineering, Beihang University
- Vajta Zs.
- Institute for Nuclear Research, Hungarian Academy of Sciences
- Kanaya S.
- Department of Physics, Osaka University
- Valiente-Dobòn J.J.
- Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Legnaro
- DOI
- https://doi.org/10.1051/epjconf/201714610009
- Journal volume & issue
-
Vol. 146
p. 10009
Abstract
This short paper presents the identification of a metastable, isomeric-state decay in the neutron-rich odd-odd, prolate-deformed nucleus 166Tb. The nucleus of interest was formed using the in-flight fission of a 345 MeV per nucleon 238U primary beam at the RIBF facility, RIKEN, Japan. Gamma-ray transitions decaying from the observed isomeric states in 166Tb were identified using the EURICA gamma-ray spectrometer, positioned at the final focus of the BigRIPS fragments separator. The current work identifies a single discrete gamma-ray transition of energy 119 keV which de-excites an isomeric state in 166Tb with a measured half-life of 3.5(4) μs. The multipolarity assignment for this transition is an electric dipole and is made on the basis internal conversion and decay lifetime arguments. Possible two quasi-particle Nilsson configurations for the initial and final states which are linked by this transition in 166Tb are made on the basis of comparison with Blocked BCS Nilsson calculations, with the predicted ground state configuration for this nucleus arising from the coupling of the v(1-/2)[521] and π(3+/2) Nilsson orbitals.
