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Direct Measurement of Octupole Deformation in 146Ba

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  1. Idaho National Laboratory
  2. Argonne National Laboratory
  3. Lawrence Livermore National Laboratory
  4. University of Rochester
  5. Lawrence Berkeley National Laboratory
+ Show Author Affiliations
The octupole strength present in the neutron-rich, radioactive nucleus 146Ba has been experimentally determined for the first time using Coulomb excitation. To achieve this, A=146 fission fragments from CARIBU were post-accelerated by the Argonne Tandem Linac Accelerator System (ATLAS) and impinged on a thin 208Pb target. Using the GRETINA gamma-ray spectrometer and the CHICO2 heavy-ion counter, the reduced transition probability B(E3; 3- ->0+) was determined as 48(+21/-29) W.u. The new result provides further experimental evidence for the presence of a region of octupole deformation surrounding the neutron-rich barium isotopes.
Research Organization:
Idaho National Laboratory (INL), Idaho Falls, ID (United States)
Sponsoring Organization:
USDOE Office of Science (SC)
DOE Contract Number:
AC07-05ID14517
OSTI ID:
1478631
Report Number(s):
INL/CON-17-40902-Rev000
Country of Publication:
United States
Language:
English

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Direct evidence of octupole deformation in neutron-rich 144Ba
Journal Article · Thu Mar 17 00:00:00 EDT 2016 · Physical Review Letters · OSTI ID:1260475

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
Coulomb excitation
barium
octupole
radioactive beam