Physics Letters B (Nov 2014)
Identification of a millisecond isomeric state in Cd81129 via the detection of internal conversion and Compton electrons
- J. Taprogge,
- A. Jungclaus,
- H. Grawe,
- S. Nishimura,
- Z.Y. Xu,
- P. Doornenbal,
- G. Lorusso,
- E. Nácher,
- G.S. Simpson,
- P.-A. Söderström,
- T. Sumikama,
- H. Baba,
- F. Browne,
- N. Fukuda,
- R. Gernhäuser,
- G. Gey,
- N. Inabe,
- T. Isobe,
- H.S. Jung,
- D. Kameda,
- G.D. Kim,
- Y.-K. Kim,
- I. Kojouharov,
- T. Kubo,
- N. Kurz,
- Y.K. Kwon,
- Z. Li,
- H. Sakurai,
- H. Schaffner,
- K. Steiger,
- H. Suzuki,
- H. Takeda,
- Zs. Vajta,
- H. Watanabe,
- J. Wu,
- A. Yagi,
- K. Yoshinaga,
- G. Benzoni,
- S. Bönig,
- K.Y. Chae,
- L. Coraggio,
- A. Covello,
- J.-M. Daugas,
- F. Drouet,
- A. Gadea,
- A. Gargano,
- S. Ilieva,
- F.G. Kondev,
- T. Kröll,
- G.J. Lane,
- A. Montaner-Pizá,
- K. Moschner,
- D. Mücher,
- F. Naqvi,
- M. Niikura,
- H. Nishibata,
- A. Odahara,
- R. Orlandi,
- Z. Patel,
- Zs. Podolyák,
- A. Wendt
Affiliations
- J. Taprogge
- Instituto de Estructura de la Materia, CSIC, E-28006 Madrid, Spain; Departamento de Física Teórica, Universidad Autónoma de Madrid, E-28049 Madrid, Spain; RIKEN Nishina Center, RIKEN, 2-1 Hirosawa, Wako-shi, Saitama 351-0198, Japan
- A. Jungclaus
- Instituto de Estructura de la Materia, CSIC, E-28006 Madrid, Spain; Corresponding author.
- H. Grawe
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany
- S. Nishimura
- RIKEN Nishina Center, RIKEN, 2-1 Hirosawa, Wako-shi, Saitama 351-0198, Japan
- Z.Y. Xu
- RIKEN Nishina Center, RIKEN, 2-1 Hirosawa, Wako-shi, Saitama 351-0198, Japan
- P. Doornenbal
- RIKEN Nishina Center, RIKEN, 2-1 Hirosawa, Wako-shi, Saitama 351-0198, Japan
- G. Lorusso
- RIKEN Nishina Center, RIKEN, 2-1 Hirosawa, Wako-shi, Saitama 351-0198, Japan
- E. Nácher
- Instituto de Estructura de la Materia, CSIC, E-28006 Madrid, Spain
- G.S. Simpson
- LPSC, Université Joseph Fourier Grenoble 1, CNRS/IN2P3, Institut National Polytechnique de Grenoble, F-38026 Grenoble cedex, France
- P.-A. Söderström
- RIKEN Nishina Center, RIKEN, 2-1 Hirosawa, Wako-shi, Saitama 351-0198, Japan
- T. Sumikama
- Department of Physics, Tohoku University, Aoba, Sendai, Miyagi 980-8578, Japan
- H. Baba
- RIKEN Nishina Center, RIKEN, 2-1 Hirosawa, Wako-shi, Saitama 351-0198, Japan
- F. Browne
- School of Computing, Engineering and Mathematics, University of Brighton, Brighton BN2 4JG, United Kingdom; RIKEN Nishina Center, RIKEN, 2-1 Hirosawa, Wako-shi, Saitama 351-0198, Japan
- N. Fukuda
- RIKEN Nishina Center, RIKEN, 2-1 Hirosawa, Wako-shi, Saitama 351-0198, Japan
- R. Gernhäuser
- Physik Department E12, Technische Universität München, D-85748 Garching, Germany
- G. Gey
- LPSC, Université Joseph Fourier Grenoble 1, CNRS/IN2P3, Institut National Polytechnique de Grenoble, F-38026 Grenoble cedex, France; Institut Laue-Langevin, B.P. 156, F-38042 Grenoble cedex 9, France; RIKEN Nishina Center, RIKEN, 2-1 Hirosawa, Wako-shi, Saitama 351-0198, Japan
- N. Inabe
- RIKEN Nishina Center, RIKEN, 2-1 Hirosawa, Wako-shi, Saitama 351-0198, Japan
- T. Isobe
- RIKEN Nishina Center, RIKEN, 2-1 Hirosawa, Wako-shi, Saitama 351-0198, Japan
- H.S. Jung
- Department of Physics, Chung-Ang University, Seoul 156-756, Republic of Korea
- D. Kameda
- RIKEN Nishina Center, RIKEN, 2-1 Hirosawa, Wako-shi, Saitama 351-0198, Japan
- G.D. Kim
- Rare Isotope Science Project, Institute for Basic Science, Daejeon 305-811, Republic of Korea
- Y.-K. Kim
- Rare Isotope Science Project, Institute for Basic Science, Daejeon 305-811, Republic of Korea; Department of Nuclear Engineering, Hanyang University, Seoul 133-791, Republic of Korea
- I. Kojouharov
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany
- T. Kubo
- RIKEN Nishina Center, RIKEN, 2-1 Hirosawa, Wako-shi, Saitama 351-0198, Japan
- N. Kurz
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany
- Y.K. Kwon
- Rare Isotope Science Project, Institute for Basic Science, Daejeon 305-811, Republic of Korea
- Z. Li
- School of Physics and State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing 100871, China
- H. Sakurai
- RIKEN Nishina Center, RIKEN, 2-1 Hirosawa, Wako-shi, Saitama 351-0198, Japan; Department of Physics, University of Tokyo, Hongo 7-3-1, Bunkyo-ku, 113-0033 Tokyo, Japan
- H. Schaffner
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany
- K. Steiger
- Physik Department E12, Technische Universität München, D-85748 Garching, Germany
- H. Suzuki
- RIKEN Nishina Center, RIKEN, 2-1 Hirosawa, Wako-shi, Saitama 351-0198, Japan
- H. Takeda
- RIKEN Nishina Center, RIKEN, 2-1 Hirosawa, Wako-shi, Saitama 351-0198, Japan
- Zs. Vajta
- MTA Atomki, P.O. Box 51, Debrecen H-4001, Hungary; RIKEN Nishina Center, RIKEN, 2-1 Hirosawa, Wako-shi, Saitama 351-0198, Japan
- H. Watanabe
- RIKEN Nishina Center, RIKEN, 2-1 Hirosawa, Wako-shi, Saitama 351-0198, Japan
- J. Wu
- School of Physics and State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing 100871, China; RIKEN Nishina Center, RIKEN, 2-1 Hirosawa, Wako-shi, Saitama 351-0198, Japan
- A. Yagi
- Department of Physics, Osaka University, Machikaneyama-machi 1-1, Osaka 560-0043, Toyonaka, Japan
- K. Yoshinaga
- Department of Physics, Faculty of Science and Technology, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba, Japan
- G. Benzoni
- INFN, Sezione di Milano, via Celoria 16, I-20133 Milano, Italy
- S. Bönig
- Institut für Kernphysik, Technische Universität Darmstadt, D-64289 Darmstadt, Germany
- K.Y. Chae
- Department of Physics, Sungkyunkwan University, Suwon 440-746, Republic of Korea
- L. Coraggio
- Istituto Nazionale di Fisica Nucleare, Complesso Universitario di Monte S. Angelo, I-80126 Napoli, Italy
- A. Covello
- Dipartimento di Fisica, Università di Napoli Federico II, Complesso Universitario di Monte S. Angelo, I-80126 Napoli, Italy
- J.-M. Daugas
- CEA, DAM, DIF, 91297 Arpajon cedex, France
- F. Drouet
- LPSC, Université Joseph Fourier Grenoble 1, CNRS/IN2P3, Institut National Polytechnique de Grenoble, F-38026 Grenoble cedex, France
- A. Gadea
- Instituto de Física Corpuscular, CSIC-Univ. of Valencia, E-46980 Paterna, Spain
- A. Gargano
- Istituto Nazionale di Fisica Nucleare, Complesso Universitario di Monte S. Angelo, I-80126 Napoli, Italy
- S. Ilieva
- Institut für Kernphysik, Technische Universität Darmstadt, D-64289 Darmstadt, Germany
- F.G. Kondev
- Nuclear Engineering Division, Argonne National Laboratory, Argonne, IL 60439, USA
- T. Kröll
- Institut für Kernphysik, Technische Universität Darmstadt, D-64289 Darmstadt, Germany
- G.J. Lane
- Department of Nuclear Physics, Research School of Physical Sciences and Engineering, Australian National University, Canberra, ACT 0200, Australia
- A. Montaner-Pizá
- Instituto de Física Corpuscular, CSIC-Univ. of Valencia, E-46980 Paterna, Spain
- K. Moschner
- IKP, University of Cologne, D-50937 Cologne, Germany
- D. Mücher
- Institut für Kernphysik, Technische Universität Darmstadt, D-64289 Darmstadt, Germany
- F. Naqvi
- Wright Nuclear Structure Laboratory, Yale University, New Haven, CT 06520-8120, USA
- M. Niikura
- Department of Physics, University of Tokyo, Hongo 7-3-1, Bunkyo-ku, 113-0033 Tokyo, Japan
- H. Nishibata
- Department of Physics, Osaka University, Machikaneyama-machi 1-1, Osaka 560-0043, Toyonaka, Japan
- A. Odahara
- Department of Physics, Osaka University, Machikaneyama-machi 1-1, Osaka 560-0043, Toyonaka, Japan
- R. Orlandi
- Instituut voor Kern- en Stralingsfysica, K.U. Leuven, B-3001 Heverlee, Belgium; Advanced Science Research Center, Japan Atomic Energy Agency, Tokai, Ibaraki 319-1195, Japan
- Z. Patel
- Department of Physics, University of Surrey, Guildford GU2 7XH, United Kingdom
- Zs. Podolyák
- Department of Physics, University of Surrey, Guildford GU2 7XH, United Kingdom
- A. Wendt
- IKP, University of Cologne, D-50937 Cologne, Germany
- Journal volume & issue
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Vol. 738
pp. 223 – 227
Abstract
The decay of an isomeric state in the neutron-rich nucleus 129Cd has been observed via the detection of internal conversion and Compton electrons providing first experimental information on excited states in this nucleus. The isomer was populated in the projectile fission of a 238U beam at the Radioactive Isotope Beam Factory at RIKEN. From the measured yields of γ-rays and internal conversion electrons, a multipolarity of E3 was tentatively assigned to the isomeric transition. A half-life of T1/2=3.6(2) ms was determined for the new state which was assigned a spin of (21/2+), based on a comparison to shell model calculations performed using state-of-the-art realistic effective interactions. Keywords: Isomeric decays, Transition strengths, Shell model calculations
