Terminating states in the positive-parity structures of As 67

R. Wadsworth, N. S. Kelsall, D. G. Jenkins, I. Ragnarsson, S. M. Fischer, D. P. Balamuth, P. A. Hausladen, G. C. Ball, M. P. Carpenter, R. V.F. Janssens, T. Lauritsen, C. J. Lister, D. Seweryniak, R. M. Clark, P. Fallon, A. O. Macchiavelli, C. E. Svensson, S. J. Freeman, D. G. Sarantites

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Abstract

The energy levels and γ-ray decay scheme of the positive-parity states in the Tz=12 nucleus As67 have been studied by using the Ca40(Ar36,2αp)As67 reaction at a beam energy of 145 MeV. Two new band structures have been identified which can be connected to the previously known levels. The results for these bands are compared with configuration-dependent cranked Nilsson-Strutinsky calculations. The good level of agreement between theory and experiment suggests that these structures can be interpreted in terms of configurations that involve three g92 particles and that both possess noncollective terminating states.

Original languageEnglish
Article number024313
JournalPhysical Review C
Volume98
Issue number2
DOIs
StatePublished - Aug 21 2018

Funding

The authors would like to thank the staff at the ATLAS accelerator for providing the beam and John Greene for manufacturing the targets. This work was partially supported by the UK Science and Technology Facilities Council (STFC) (under Grants No. ST/L005727/1 and No. ST/P003885/1), the Natural Sciences and Engineering Research Council of Canada (NSERC), the US NSF, Department of Energy, under Contracts No. DE-AC02-06CH11357, No. DE-AC02-05CH11231, No. DE-FG02-95ER40934, and No. w-31-109-ENG38. S.M.F. also acknowledges support from the Research Corporation. This research used resources of ANL's ATLAS facility, a DOE Office of Science User Facility. TRIUMF is supported through a contribution from the National Research Council of Canada.

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