Direct Lifetime Measurements of the Excited States in $^{72}\mathrm{Ni}$

Direct Lifetime Measurements of the Excited States in ${}^{72}{Ni}$

K. Kolos, D. Miller, R. Grzywacz, H. Iwasaki, M. Al-Shudifat, D. Bazin, C. R. Bingham, T. Braunroth, G. Cerizza, A. Gade, A. Lemasson, S. N. Liddick, M. Madurga, C. Morse, M. Portillo, M. M. Rajabali, F. Recchia, L. L. Riedinger, P. Voss, W. B. Walters, D. Weisshaar, K. Whitmore, K. Wimmer, and J. A. Tostevin

Phys. Rev. Lett. 116, 122502 – Published 22 March 2016; Erratum Phys. Rev. Lett. 124, 209901 (2020)

Abstract

The lifetimes of the first excited $2^{+}$ and $4^{+}$ states in ${}^{72}{Ni}$ were measured at the National Superconducting Cyclotron Laboratory with the recoil-distance Doppler-shift method, a model-independent probe to obtain the reduced transition probability. Excited states in ${}^{72}{Ni}$ were populated by the one-proton knockout reaction of an intermediate energy ${}^{73}{Cu}$ beam. $γ$ -ray-recoil coincidences were detected with the $γ$ -ray tracking array GRETINA and the S800 spectrograph. Our results provide evidence of enhanced transition probability $B (E 2; 2^{+} \to 0^{+})$ as compared to ${}^{68}{Ni}$ , but do not confirm the trend of large $B (E 2)$ values reported in the neighboring isotope ${}^{70}{Ni}$ obtained from Coulomb excitation measurement. The results are compared to shell model calculations. The lifetime obtained for the excited $4_{1}^{+}$ state is consistent with models showing decay of a seniority $ν = 4$ , $4^{+}$ state, which is consistent with the disappearance of the $8^{+}$ isomer in ${}^{72}{Ni}$ .

Received 28 August 2015
Corrected 8 May 2020

DOI:https://doi.org/10.1103/PhysRevLett.116.122502

Physics Subject Headings (PhySH)

Lifetimes & widths Nuclear structure & decays

Shell model

Nuclear Physics

Corrections

8 May 2020

Erratum

Publisher’s Note: Direct Lifetime Measurements of the Excited States in ${}^{72}{Ni}$ [Phys. Rev. Lett. 116, 122502 (2016)]

K. Kolos, D. Miller, R. Grzywacz, H. Iwasaki, M. Al-Shudifat, D. Bazin, C. R. Bingham, T. Braunroth, G. Cerizza, A. Gade, A. Lemasson, S. N. Liddick, M. Madurga, C. Morse, M. Portillo, M. M. Rajabali, F. Recchia, L. L. Riedinger, P. Voss, W. B. Walters, D. Weisshaar, K. Whitmore, K. Wimmer, and J. A. Tostevin

Phys. Rev. Lett. 124, 209901 (2020)

Authors & Affiliations

K. Kolos^1,2,*, D. Miller³, R. Grzywacz^1,4, H. Iwasaki^5,6, M. Al-Shudifat⁷, D. Bazin⁵, C. R. Bingham^1,4, T. Braunroth⁸, G. Cerizza¹, A. Gade^5,6, A. Lemasson⁵, S. N. Liddick^5,9, M. Madurga¹, C. Morse^5,6, M. Portillo⁵, M. M. Rajabali³, F. Recchia⁵, L. L. Riedinger^1,4, P. Voss¹⁰, W. B. Walters¹¹, D. Weisshaar⁵, K. Whitmore^5,6, K. Wimmer¹², and J. A. Tostevin¹³

¹Department of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37996, USA
²Lawrence Livermore National Laboratory, Livermore, California 94551, USA
³TRIUMF, 4004 Westbrook Mall, Vancouver, British Columbia V6T 2A3, Canada
⁴Physics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831-6371, USA
⁵National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824-1321, USA
⁶Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824, USA
⁷Department of Physics, Al-abayt University, Mafraq 25113, Jordan
⁸Institut für Kernphysik der Universität zu Köln, D-50937 Köln, Germany
⁹Department of Chemistry, Michigan State University, East Lansing, Michigan 48824, USA
¹⁰Simon Fraser University, Burnaby, British Columbia, V5A 1S6, Canada
¹¹University of Maryland, College Park, Maryland 20742, USA
¹²Department of Physics, Central Michigan University, Mount Pleasant, Michigan 48859, USA
¹³Department of Physics, University of Surrey, Guildford, Surrey GU2 7XH, United Kingdom

^*kolos1@llnl.gov

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Vol. 116, Iss. 12 — 25 March 2016

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Physical Review Letters

Direct Lifetime Measurements of the Excited States in Ni72

Phys. Rev. Lett. 116, 122502 – Published 22 March 2016; Erratum Phys. Rev. Lett. 124, 209901 (2020)

Abstract

Physics Subject Headings (PhySH)

Corrections

Erratum

Publisher’s Note: Direct Lifetime Measurements of the Excited States in Ni72 [Phys. Rev. Lett. 116, 122502 (2016)]

Phys. Rev. Lett. 124, 209901 (2020)

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Direct Lifetime Measurements of the Excited States in ${}^{72}{Ni}$

Publisher’s Note: Direct Lifetime Measurements of the Excited States in ${}^{72}{Ni}$ [Phys. Rev. Lett. 116, 122502 (2016)]