E0 transition strength in stable Ni isotopes

L. J. Evitts, A. B. Garnsworthy, T. Kibédi, J. Smallcombe, M. W. Reed, A. E. Stuchbery, G. J. Lane, T. K. Eriksen, A. Akber, B. Alshahrani, M. De Vries, M. S.M. Gerathy, J. D. Holt, B. Q. Lee, B. P. McCormick, A. J. Mitchell, M. Moukaddam, S. Mukhopadhyay, N. Palalani, T. PalazzoE. E. Peters, A. P.D. Ramirez, T. Tornyi, S. W. Yates

Research output: Contribution to journalArticlepeer-review

6 Scopus citations

Abstract

Excited states in Ni58,60,62 were populated via inelastic proton scattering at the Australian National University as well as via inelastic neutron scattering at the University of Kentucky Accelerator Laboratory. The Super-e electron spectrometer and the CAESAR Compton-suppressed HPGe array were used in complementary experiments to measure conversion coefficients and δ(E2/M1) mixing ratios, respectively, for a number of 2+→2+ transitions. The data obtained were combined with lifetimes and branching ratios to determine E0,M1, and E2 transition strengths between 2+ states. The E0 transition strengths between 0+ states were measured using internal conversion electron spectroscopy and compare well to previous results from internal pair formation spectroscopy. The E0 transition strengths between the lowest-lying 2+ states were found to be consistently large for the isotopes studied.

Original languageEnglish
Article number024306
JournalPhysical Review C
Volume99
Issue number2
DOIs
StatePublished - Feb 11 2019

Bibliographical note

Funding Information:
We would like to thank the technical staff of the Heavy Ion Accelerator Facility at the Australian National University, and in particular Justin Heighway for preparing the nickel targets. We thank B. A. Brown and S. R. Stroberg for useful discussions related to this work. A.B.G. is grateful for support from the Department of Nuclear Physics of the Australian National University. Support for the ANU Heavy Ion Accelerator Facility operations through the Australian National Collaborative Research Infrastructure Strategy (NCRIS) program is acknowledged. This work was supported in part by the Natural Sciences and Engineering Research Council of Canada (NSERC); the U.S. National Science Foundation, Grant No. PHY-1606890; and by the Australian Research Council Discovery Grants No. DP140102986 and No. FT100100991. TRIUMF receives funding via a contribution agreement through the National Research Council Canada.

Publisher Copyright:
© 2019 American Physical Society.

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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