title: Monopole-driven shell evolution below the doubly magic nucleus 132Sn explored with the long-lived isomer in 126Pd.
abstract: A new isomer with a half-life of 23.0(8) ms has been identified at 2406 keV in (126)Pd and is proposed to have a spin and parity of 10(+) with a maximally aligned configuration comprising two neutron holes in the 1h(11/2) orbit. In addition to an internal-decay branch through a hindered electric octupole transition, β decay from the long-lived isomer was observed to populate excited states at high spins in (126)Ag. The smaller energy difference between the 10(+) and 7(-) isomers in (126)Pd than in the heavier N=80 isotones can be interpreted as being ascribed to the monopole shift of the 1h(11/2) neutron orbit. The effects of the monopole interaction on the evolution of single-neutron energies below (132)Sn are discussed in terms of the central and tensor forces.
authors.affiliation: IRCNPC, School of Physics and Nuclear Energy Engineering, Beihang University, Beijing 100191, China and RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan.
authors.forename: H
authors.initials: H
authors.lastname: Watanabe
authors.affiliation: RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan.
authors.forename: G
authors.initials: G
authors.lastname: Lorusso
authors.affiliation: RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan.
authors.forename: S
authors.initials: S
authors.lastname: Nishimura
authors.affiliation: Department of Physics, University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan and Center for Nuclear Study, University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan.
authors.forename: T
authors.initials: T
authors.lastname: Otsuka
authors.affiliation: RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan.
authors.forename: K
authors.initials: K
authors.lastname: Ogawa
authors.affiliation: Department of Physics, University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan.
authors.forename: Z Y
authors.initials: ZY
authors.lastname: Xu
authors.affiliation: Department of Physics, Tohoku University, Aoba, Sendai, Miyagi 980-8578, Japan.
authors.forename: T
authors.initials: T
authors.lastname: Sumikama
authors.affiliation: RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan.
authors.forename: P-A
authors.initials: PA
authors.lastname: Söderström
authors.affiliation: RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan.
authors.forename: P
authors.initials: P
authors.lastname: Doornenbal
authors.affiliation: Department of Physics, Peking University, Beijing 100871, China.
authors.forename: Z
authors.initials: Z
authors.lastname: Li
authors.affiliation: RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan and School of Computing Engineering and Mathematics, University of Brighton, Brighton, BN2 4GJ, United Kingdom.
authors.forename: F
authors.initials: F
authors.lastname: Browne
authors.affiliation: RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan and LPSC, Université Joseph Fourier Grenoble 1, CNRS/IN2P3, Institut National Polytechnique de Grenoble, F-38026 Grenoble Cedex, France.
authors.forename: G
authors.initials: G
authors.lastname: Gey
authors.affiliation: Department of Physics, Chung-Ang University, Seoul 156-756, Republic of Korea.
authors.forename: H S
authors.initials: HS
authors.lastname: Jung
authors.affiliation: RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan and Departamento de Física Teórica, Universidad Autónoma de Madrid, E-28049 Madrid, Spain and Instituto de Estructura de la Materia, CSIC, E-28006 Madrid, Spain.
authors.forename: J
authors.initials: J
authors.lastname: Taprogge
authors.affiliation: RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan and MTA Atomki, P.O. Box 51, Debrecen, H-4001, Hungary.
authors.forename: Zs
authors.initials: Z
authors.lastname: Vajta
authors.affiliation: RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan and Department of Physics, Peking University, Beijing 100871, China.
authors.forename: J
authors.initials: J
authors.lastname: Wu
authors.affiliation: Department of Physics, Osaka University, Machikaneyama-machi 1-1, Osaka 560-0043 Toyonaka, Japan.
authors.forename: A
authors.initials: A
authors.lastname: Yagi
authors.affiliation: RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan.
authors.forename: H
authors.initials: H
authors.lastname: Baba
authors.affiliation: INFN, Sezione di Milano, via Celoria 16, I-20133 Milano, Italy.
authors.forename: G
authors.initials: G
authors.lastname: Benzoni
authors.affiliation: Department of Physics, Sungkyunkwan University, Suwon 440-746, Republic of Korea.
authors.forename: K Y
authors.initials: KY
authors.lastname: Chae
authors.affiliation: INFN, Sezione di Milano, via Celoria 16, I-20133 Milano, Italy and Dipartimento di Fisica, Universitá di Milano, via Celoria 16, I-20133 Milano, Italy.
authors.forename: F C L
authors.initials: FC
authors.lastname: Crespi
authors.affiliation: RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan.
authors.forename: N
authors.initials: N
authors.lastname: Fukuda
authors.affiliation: Physik Department, Technische Universität München, D-85748 Garching, Germany.
authors.forename: R
authors.initials: R
authors.lastname: Gernhäuser
authors.affiliation: RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan.
authors.forename: N
authors.initials: N
authors.lastname: Inabe
authors.affiliation: RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan.
authors.forename: T
authors.initials: T
authors.lastname: Isobe
authors.affiliation: Instituto de Estructura de la Materia, CSIC, E-28006 Madrid, Spain.
authors.forename: A
authors.initials: A
authors.lastname: Jungclaus
authors.affiliation: RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan.
authors.forename: D
authors.initials: D
authors.lastname: Kameda
authors.affiliation: Rare Isotope Science Project, Institute for Basic Science, Daejeon 305-811, Republic of Korea.
authors.forename: G D
authors.initials: GD
authors.lastname: Kim
authors.affiliation: Rare Isotope Science Project, Institute for Basic Science, Daejeon 305-811, Republic of Korea and Department of Nuclear Engineering, Hanyang University, Seoul 133-791, Republic of Korea.
authors.forename: Y K
authors.initials: YK
authors.lastname: Kim
authors.affiliation: GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany.
authors.forename: I
authors.initials: I
authors.lastname: Kojouharov
authors.affiliation: Nuclear Engineering Division, Argonne National Laboratory, Argonne, Illinois 60439, USA.
authors.forename: F G
authors.initials: FG
authors.lastname: Kondev
authors.affiliation: RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan.
authors.forename: T
authors.initials: T
authors.lastname: Kubo
authors.affiliation: GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany.
authors.forename: N
authors.initials: N
authors.lastname: Kurz
authors.affiliation: Rare Isotope Science Project, Institute for Basic Science, Daejeon 305-811, Republic of Korea.
authors.forename: Y K
authors.initials: YK
authors.lastname: Kwon
authors.affiliation: Department of Nuclear Physics, R.S.P.E., Australian National University, Canberra, Australian Capital Territory 0200, Australia.
authors.forename: G J
authors.initials: GJ
authors.lastname: Lane
authors.affiliation: Department of Display Engineering, Hoseo University, Chung-Nam 336-795, Republic of Korea.
authors.forename: C-B
authors.initials: CB
authors.lastname: Moon
authors.affiliation: IFIC, CSIC-Universidad de Valencia, A.C. 22085, E 46071, Valencia, Spain.
authors.forename: A
authors.initials: A
authors.lastname: Montaner-Pizá
authors.affiliation: Institut für Kernphysik, Universität zu Köln, Zülpicher Strasse 77, D-50937 Köln, Germany.
authors.forename: K
authors.initials: K
authors.lastname: Moschner
authors.affiliation: Wright Nuclear Structure Laboratory, Yale University, New Haven, Connecticut 06520-8120, USA.
authors.forename: F
authors.initials: F
authors.lastname: Naqvi
authors.affiliation: Department of Physics, University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan.
authors.forename: M
authors.initials: M
authors.lastname: Niikura
authors.affiliation: Department of Physics, Osaka University, Machikaneyama-machi 1-1, Osaka 560-0043 Toyonaka, Japan.
authors.forename: H
authors.initials: H
authors.lastname: Nishibata
authors.affiliation: Department of Physics, Faculty of Science and Technology, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba, Japan.
authors.forename: D
authors.initials: D
authors.lastname: Nishimura
authors.affiliation: Department of Physics, Osaka University, Machikaneyama-machi 1-1, Osaka 560-0043 Toyonaka, Japan.
authors.forename: A
authors.initials: A
authors.lastname: Odahara
authors.affiliation: Instituut voor Kern en Stralingsfysica, KU Leuven, University of Leuven, B-3001 Leuven, Belgium.
authors.forename: R
authors.initials: R
authors.lastname: Orlandi
authors.affiliation: Department of Physics, University of Surrey, Guildford GU2 7XH, United Kingdom.
authors.forename: Z
authors.initials: Z
authors.lastname: Patel
authors.affiliation: Department of Physics, University of Surrey, Guildford GU2 7XH, United Kingdom.
authors.forename: Zs
authors.initials: Z
authors.lastname: Podolyák
authors.affiliation: RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan.
authors.forename: H
authors.initials: H
authors.lastname: Sakurai
authors.affiliation: GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany.
authors.forename: H
authors.initials: H
authors.lastname: Schaffner
authors.affiliation: LPSC, Université Joseph Fourier Grenoble 1, CNRS/IN2P3, Institut National Polytechnique de Grenoble, F-38026 Grenoble Cedex, France.
authors.forename: G S
authors.initials: GS
authors.lastname: Simpson
authors.affiliation: Physik Department, Technische Universität München, D-85748 Garching, Germany.
authors.forename: K
authors.initials: K
authors.lastname: Steiger
authors.affiliation: RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan.
authors.forename: H
authors.initials: H
authors.lastname: Suzuki
authors.affiliation: RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan.
authors.forename: H
authors.initials: H
authors.lastname: Takeda
authors.affiliation: Institut für Kernphysik, Universität zu Köln, Zülpicher Strasse 77, D-50937 Köln, Germany.
authors.forename: A
authors.initials: A
authors.lastname: Wendt
authors.affiliation: Department of Physics, Faculty of Science and Technology, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba, Japan.
authors.forename: K
authors.initials: K
authors.lastname: Yoshinaga