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Octupole correlations in neutron-rich {sup 143,145}Ba and a type of superdeformed band in {sup 145}Ba

Journal Article · · Physical Review, C
; ; ; ; ; ; ; ;  [1]; ; ; ; ; ; ; ; ; ; ; more »; ; ; ; ;  [2]; ; ;  [3];  [4]; ; ;  [5]; ; ; ; ; ; ;  [6]; ; ; ;  [7];  [8]; ; ; ;  [9];  [10];  [11];  [12] « less
  1. Physics Department, Tsinghua University, Beijing 100084, Peoples Republic of (China)
  2. Physics Department, Vanderbilt University, Nashville, Tennessee 37235 (United States)
  3. Joint Institute for Heavy Ion Research, Oak Ridge, Tennessee 37831 (United States)
  4. Physics Department, Mississippi State University, Mississippi 39762 (United States)
  5. Idaho National Engineering Laboratory, Idaho Falls, Idaho 83415 (United States)
  6. Lawrence Berkeley National Laboratory, Berkeley, California 94720 (United States)
  7. Flerov Laboratory for Nuclear Reactions, Joint Institute for Nuclear Research, Dubna (Russia)
  8. Universidade Federal do Rio de Janeiro, Caixa Postal 68528, RG (Brazil)
  9. Lawrence Livermore National Laboratory, Livermore, California 94550 (United States)
  10. Nuclear Engineering Department, University of California at Berkeley, Berkeley, California 94720 (United States)
  11. Institute of Physics, SASc, Dubravskacesta 9, 84228 Bratislava (Slovakia)
  12. University of Michigan, Ann Arbor, Michigan 48104 (United States)
+ Show Author Affiliations
High spin states in neutron-rich odd-{ital Z} {sup 143,145}Ba nuclei have been investigated from the study of prompt {gamma} rays in the spontaneous fission of {sup 252}Cf by using {gamma}-{gamma}- and {gamma}-{gamma}-{gamma}- coincidence techniques. Alternating parity bands are identified for the first time in {sup 145}Ba and extended in {sup 143}Ba. A new side band, with equal, constant dynamic, and kinetic moments of inertia equal to the rigid body value, as found in superdeformed bands, is discovered in {sup 145}Ba. Enhanced E1 transitions between the negative- and positive-parity bands in these nuclei give evidence for strong octupole deformation in {sup 143}Ba and in {sup 145}Ba. These collective bands show competition and coexistence between symmetric and asymmetric shapes in {sup 145}Ba. Evidence is found for crossing M1 and E1 transitions between the s=+i and s={minus}i doublets in {sup 143}Ba. {copyright} {ital 1999} {ital The American Physical Society}
OSTI ID:
688048
Journal Information:
Physical Review, C, Journal Name: Physical Review, C Journal Issue: 5 Vol. 60; ISSN 0556-2813; ISSN PRVCAN
Country of Publication:
United States
Language:
English

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Related Subjects

66 PHYSICS
BARIUM 143
BARIUM 145
CALIFORNIUM 252
GAMMA SPECTRA
HIGH SPIN STATES
MOMENT OF INERTIA
OCTUPOLES
PARITY
SPONTANEOUS FISSION
SUPERDEFORMED NUCLEI