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Title: Structures of the neutron-rich nuclei observed in fission of {sup 252}Cf

Analysis of high statistics triple coincidence fission γ data from {sup 252}Cf at Gammasphere including angular correlations yielded well-expanded high-spin level schemes with more complete and reliable spin/parity assignments for {sup 82}Ge, {sup 118,120,122}Cd and {sup 114,115}Rh. Both the quasi-particle/hole couplings and quasi-rotational degrees of freedom are implied to play roles in these Cd isotopes. Evidence for triaxial shapes and octupole components in the Cd isotopes is presented. These Cd isotopes may have triaxial deformations. High-spin level schemes of {sup 114,115}Rh have been established for the first time. The existence of a relatively large signature splitting and an yrare band shows typical features of a triaxially deformed nucleus. Possible excited deformed rotational bands are observed, for the first time, in {sup 82}Ge. From the multipole mixing ratio measurement, the ground state configurations of {sup 109,111}Ru, as well as excited states in {sup 103,107}Mo and {sup 111}Ru were determined.
Authors:
; ; ; ;  [1] ;  [2] ;  [3] ; ;  [4] ;  [5] ;  [6] ;  [7]
  1. Department of Physics, Vanderbilt University, Nashville, Tennessee 37235 (United States)
  2. Department of Physics, Vanderbilt University, Nashville, Tennessee 37235 USA and Lawrence Berkeley National Laboratory, Berkeley, California 94720 (United States)
  3. Department of Physics, Vanderbilt University, Nashville, Tennessee 37235 USA and UNRIB/Oak Ridge Associated Universities, Oak Ridge, Tennessee 37831 (United States)
  4. Lawrence Berkeley National Laboratory, Berkeley, California 94720 (United States)
  5. Department of Physics, Oxford University, Oxford OX1 3PU (United Kingdom)
  6. Flerov Laboratory of Nuclear Reactions, JINR, Dubna (Russian Federation)
  7. Department of Physics, Tsinghua University, Beijing 100084 (China)
Publication Date:
OSTI Identifier:
22308424
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1609; Journal Issue: 1; Conference: FIG12: International conference on frontiers in gamma-ray spectroscopy 2012, New Delhi (India), 5-7 Mar 2012; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; ANGULAR CORRELATION; CADMIUM 122; CALIFORNIUM 252; DEFORMED NUCLEI; FISSION; GERMANIUM 82; GROUND STATES; MIXING RATIO; MOLYBDENUM 107; NEUTRON-RICH ISOTOPES; RHODIUM 115; ROTATIONAL STATES; RUTHENIUM 111; SPIN