Investigating the strength of the N = 34 subshell closure in 54Ca

D. Steppenbeck, S. Takeuchi, N. Aoi, P. Doornenbal, J. Lee, M. Matsushita, H. Wang, H. Baba, N. Fukuda, S. Go, M. Honma, K. Matsui, S. Michimasa, T. Motobayashi, D. Nishimura, T. Otsuka, H. Sakurai, Y. Shiga, P. A. Söderström, T. SumikamaH. Suzuki, R. Taniuchi, Y. Utsuno, J. J. Valiente-Dobón, K. Yoneda

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Abstract

Excited states in the exotic N = 34 isotope 54Ca have been measured for the first time via in-beam γ-ray spectroscopy with proton-knockout reactions from 55Sc and 56Ti radioactive beams on a Be reaction target at the Radioactive Isotope Beam Factory, Japan. A strong candidate for the transition from the first 2+ state to the 0+ ground state has been identified, in addition to several other weaker transitions. The structure of the N = 33 isotope 53Ca has also been investigated from the same data. Preliminary γ-ray energy spectra for 54Ca and 53Ca will be presented and the significance of the N = 34 subshell closure will be examined. Predictions of several shell-model interactions performed in the fp model space will be discussed in light of the new results.

Original languageEnglish
Article number012012
JournalJournal of Physics: Conference Series
Volume445
Issue number1
DOIs
Publication statusPublished - Jan 1 2013
EventInternational Symposium on Exotic Nuclear Structure From Nucleons, ENSFN 2012 - Tokyo, Japan
Duration: Oct 10 2012Oct 12 2012

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All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Cite this

Steppenbeck, D., Takeuchi, S., Aoi, N., Doornenbal, P., Lee, J., Matsushita, M., ... Yoneda, K. (2013). Investigating the strength of the N = 34 subshell closure in 54Ca. Journal of Physics: Conference Series, 445(1), [012012]. https://doi.org/10.1088/1742-6596/445/1/012012