Shape coexistence in Ni68

doi:10.1103/PhysRevC.89.021301

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

Abstract

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.

Authors:

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

Publication Date:: 2014-02-11

Research Org.:: Nuclear Science and Security Consortium, Berkeley, CA (United States)

Sponsoring Org.:: USDOE National Nuclear Security Administration (NNSA)

OSTI Identifier:: 1454854

Grant/Contract Number:: NA0000979

Resource Type:: Accepted Manuscript

Journal Name:: Physical Review. C, Nuclear Physics

Additional Journal Information:: Journal Volume: 89; Journal Issue: 2; Journal ID: ISSN 0556-2813

Publisher:: American Physical Society (APS)

Country of Publication:: United States

Language:: English

Subject:: 73 NUCLEAR PHYSICS AND RADIATION PHYSICS

Citation Formats


                    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., and VonMoss, J. M. Shape coexistence in Ni68.  United States: N. p., 2014. 
        Web.  doi:10.1103/PhysRevC.89.021301.

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                    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. Shape coexistence in Ni68.  United States.  doi:10.1103/PhysRevC.89.021301.

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                    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., and VonMoss, J. M. Tue .  
        "Shape coexistence in Ni68".  United States.  doi:10.1103/PhysRevC.89.021301.  https://www.osti.gov/servlets/purl/1454854.

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@article{osti_1454854,

  title        = {Shape coexistence in Ni68},

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

  abstractNote = {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.},

  doi          = {10.1103/PhysRevC.89.021301},

  journal      = {Physical Review. C, Nuclear Physics},

  number       = 2,

  volume       = 89,

  place        = {United States},

  year         = {2014},

  month        = {2}

}

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DOI: 10.1103/PhysRevC.89.021301

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Cited by: 53 works

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Figure 1: (a) Time profile of a GeDSSD detector signal for a ⁶⁸Co $\beta$ decay followed by an internal transition. (b) Energy spectra measured in the GeDSSD for events which occurred less than 2 s following the arrival of a ⁶⁸Co ion, showing signals attributed to the detection of amore »

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Title: Shape coexistence in Ni 68

Abstract

Citation Formats

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

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journal, April 2000

A triplet of differently shaped spin-zero states in the atomic nucleus 186Pb
journal, May 2000

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Quadrupole Collectivity in Neutron-Rich Fe and Cr Isotopes
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Electronic Shell Structure and Abundances of Sodium Clusters
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