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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/14616
Title: γ -soft Ba 146 and the role of nonaxial shapes at N≈90
Authors: Mitchell A.J.
Lister C.J.
McCutchan E.A.
Albers M.
Ayangeakaa A.D.
Bertone P.F.
Carpenter M.P.
Chiara C.J.
Chowdhury P.
Clark J.A.
Copp P.
David H.M.
Deo, A. Y.
DiGiovine B.
D'Olympia N.
Dungan R.
Harding R.D.
Harker J.
Hota S.S.
Janssens R.V.F.
Kondev F.G.
Liu S.H.
Ramayya A.V.
Rissanen J.
Savard G.
Seweryniak D.
Shearman R.
Sonzogni A.A.
Tabor S.L.
Walters W.B.
Wang E.
Zhu S.
Published in: Physical Review C
Abstract: Low-spin states in the neutron-rich, N=90 nuclide Ba146 were populated following β decay of Cs146, with the goal of clarifying the development of deformation in barium isotopes through delineation of their nonyrast structures. Fission fragments of Cs146 were extracted from a 1.7-Ci Cf252 source and mass selected using the CAlifornium Rare Ion Breeder Upgrade (CARIBU) facility. Low-energy ions were deposited at the center of a box of thin β detectors, surrounded by a highly efficient high-purity Ge array. The new Ba146 decay scheme now contains 31 excited levels extending up to ∼2.5 MeV excitation energy, double what was previously known. These data are compared to predictions from the interacting boson approximation (IBA) model. It appears that the abrupt shape change found at N=90 in Sm and Gd is much more gradual in Ba and Ce, due to an enhanced role of the γ degree of freedom. © 2016 American Physical Society.
Citation: Physical Review C (2016), 93(1): -
URI: https://doi.org/10.1103/PhysRevC.93.014306
http://repository.iitr.ac.in/handle/123456789/14616
Issue Date: 2016
Publisher: American Physical Society
ISSN: 24699985
Author Scopus IDs: 7402039682
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Author Affiliations: Mitchell, A.J., Department of Physics and Applied Physics, University of Massachusetts Lowell, Lowell, MA 01854, United States, Department of Nuclear Physics, Australian National University, Canberra, ACT 2601, Australia
Lister, C.J., Department of Physics and Applied Physics, University of Massachusetts Lowell, Lowell, MA 01854, United States
McCutchan, E.A., National Nuclear Data Center, Brookhaven National Laboratory, Upton, NY 11973, United States
Albers, M., Physics Division, Argonne National Laboratory, Argonne, IL 60439, United States, Ernst, and Young GmbH, Wirtschaftspruefungsgesellschaft, Mergenthalerallee 3-5, Eschborn, D-65760, Germany
Ayangeakaa, A.D., Physics Division, Argonne National Laboratory, Argonne, IL 60439, United States
Bertone, P.F., Physics Division, Argonne National Laboratory, Argonne, IL 60439, United States, Marshall Space Flight Center, Huntsville, AL 35812, United States
Carpenter, M.P., Physics Division, Argonne National Laboratory, Argonne, IL 60439, United States
Chiara, C.J., Physics Division, Argonne National Laboratory, Argonne, IL 60439, United States, Department of Chemistry and Biochemistry, University of Maryland, College Park, MD 20742, United States, U.S. Army Research Laboratory, Adelphi, MD 20783, United States
Chowdhury, P., Department of Physics and Applied Physics, University of Massachusetts Lowell, Lowell, MA 01854, United States
Clark, J.A., Physics Division, Argonne National Laboratory, Argonne, IL 60439, United States
Copp, P., Department of Physics and Applied Physics, University of Massachusetts Lowell, Lowell, MA 01854, United States
David, H.M., Physics Division, Argonne National Laboratory, Argonne, IL 60439, United States, GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt, D-64291, Germany
Deo, A.Y., Department of Physics and Applied Physics, University of Massachusetts Lowell, Lowell, MA 01854, United States, Department of Physics, Indian Institute of Technology Roorkee, Roorkee, 247 667, India
DiGiovine, B., Physics Division, Argonne National Laboratory, Argonne, IL 60439, United States
D'Olympia, N., Department of Physics and Applied Physics, University of Massachusetts Lowell, Lowell, MA 01854, United States, Passport Systems Inc., 70 Treble Cove Road, Billerica, MA 01862, United States
Dungan, R., Physics Department, Florida State University, Tallahassee, FL 32306, United States
Harding, R.D., Department of Physics and Applied Physics, University of Massachusetts Lowell, Lowell, MA 01854, United States, Department of Physics, University of Surrey, Guildford, GU2 7XH, United Kingdom, Department of Physics, University of York, Heslington, York, YO10 5DD, United Kingdom
Harker, J., Physics Division, Argonne National Laboratory, Argonne, IL 60439, United States, Department of Chemistry and Biochemistry, University of Maryland, College Park, MD 20742, United States
Hota, S.S., Department of Physics and Applied Physics, University of Massachusetts Lowell, Lowell, MA 01854, United States, Department of Nuclear Physics, Australian National University, Canberra, ACT 2601, Australia
Janssens, R.V.F., Physics Division, Argonne National Laboratory, Argonne, IL 60439, United States
Kondev, F.G., Nuclear Engineering Division, Argonne National Laboratory, Argonne, IL 60439, United States
Liu, S.H., Department of Chemistry, University of Kentucky, Lexington, KY 40506, United States, Department of Physics and Astronomy, University of Kentucky, Lexington, KY 40506, United States, West Physics, 3825 Paces Walk SE, Atlanta, GA 30339, United States
Ramayya, A.V., Physics Department, Vanderbilt University, Nashville, TN 37235, United States
Rissanen, J., Lawrence Berkeley National Laboratory, Berkeley, CA 94720, United States, Fennovoima Oy, Salmisaarenaukio 1, Helsinki, 00180, Finland
Savard, G., Physics Division, Argonne National Laboratory, Argonne, IL 60439, United States, Department of Physics, University of Chicago, Chicago, IL 60637, United States
Seweryniak, D., Physics Division, Argonne National Laboratory, Argonne, IL 60439, United States
Shearman, R., Department of Physics and Applied Physics, University of Massachusetts Lowell, Lowell, MA 01854, United States, Department of Physics, University of Surrey, Guildford, GU2 7XH, United Kingdom, National Physical Laboratory, Hampton Road, Teddington-Middlesex, TW11 0LW, United Kingdom
Sonzogni, A.A., National Nuclear Data Center, Brookhaven National Laboratory, Upton, NY 11973, United States
Tabor, S.L., Physics Department, Florida State University, Tallahassee, FL 32306, United States
Walters, W.B., Department of Chemistry and Biochemistry, University of Maryland, College Park, MD 20742, United States
Wang, E., Physics Department, Vanderbilt University, Nashville, TN 37235, United States
Zhu, S., Physics Division, Argonne National Laboratory, Argonne, IL 60439, United States
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