Shape coexistence in Ni68

Suchyta, S.; Liddick, S. N.; Tsunoda, Y.; Otsuka, T.; Bennett, M. B.; Chemey, A.; Honma, M.; Larson, N.; Prokop, C. J.; Quinn, S. J.; Shimizu, N.; Simon, A.; Spyrou, A.; Tripathi, V.; Utsuno, Y.; VonMoss, J. M.

doi:10.1103/PhysRevC.89.021301

Title: Shape coexistence in ${}^{68}{Ni}$

Journal Article · Tue Feb 11 00:00:00 EST 2014 · Physical Review C, Nuclear Physics

DOI:https://doi.org/10.1103/PhysRevC.89.021301· OSTI ID:1454854

Suchyta, S. ^[1]; Liddick, S. N. ^[1]; Tsunoda, Y. ^[2]; Otsuka, T. ^[3]; Bennett, M. B. ^[1]; Chemey, A. ^[1]; Honma, M. ^[4]; Larson, N. ^[1]; Prokop, C. J. ^[1]; Quinn, S. J. ^[1]; Shimizu, N. ^[5]; Simon, A. ^[1]; Spyrou, A. ^[1]; Tripathi, V. ^[6]; Utsuno, Y. ^[7]; VonMoss, J. M. ^[6]

Michigan State Univ., East Lansing, MI (United States)
Univ. of Tokyo (Japan). Dept. of Physics
Michigan State Univ., East Lansing, MI (United States); Univ. of Tokyo (Japan)
Univ. of Aizu, Fukushima (Japan)
Univ. of Tokyo (Japan)
Florida State Univ., Tallahassee, FL (United States)
Japan Atomic Energy Agency (JAEA), Tokai (Japan). Advanced Science Research Center

The internal-conversion and internal-pair-production decays of the first excited 0⁺ state in ⁶⁸Ni are studied following the β decay of ⁶⁸Co. A novel experimental technique, in which the ions of 68 Co were implanted into a planar germanium double-sided strip detector and which required digital pulse processing, is developed. The values for the energy of the first excited 0⁺ state and the electric monopole transition strength from the first excited 0⁺ state to the ground state in ⁶⁸Ni are determined to be 1605(3) keV and 7.6 (4) × 10^-3 , respectively. Comparisons of the experimental results to Monte Carlo shell-model calculations suggest the coexistence between a spherical ground state and an oblate first excited 0⁺ state in ⁶⁸Ni.

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Research Organization:: Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States). Nuclear Science and Security Consortium

Sponsoring Organization:: USDOE National Nuclear Security Administration (NNSA)

Grant/Contract Number:: NA0000979

OSTI ID:: 1454854

Journal Information:: Physical Review C, Nuclear Physics, Vol. 89, Issue 2; ISSN 0556-2813

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 76 works

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