Improved measurement of the 02+→01+ E0 transition strength for Se 72 using the SPICE spectrometer

Abstract

The selenium isotopes lie at the heart of a tumultuous region of the nuclear chart where shape coexistence effects grapple with neutron-proton pairing correlations, triaxiality, and the impending proton drip line. In this work, a study of Se72 by internal conversion electron and γ-ray spectroscopy was undertaken with the SPICE and TIGRESS arrays. New measurements of the branching ratio and lifetime of the 02+ state were performed, yielding a determination of ρ2(E0;02+→01+)=29(3) milliunits. Two-state mixing calculations were performed that highlighted the importance of interpretation of such E0 strength values in the context of shape coexistence.

Metadata

Item Type:	Article
Authors/Creators:	Smallcombe, J. Garnsworthy, A. B. Korten, W. Singh, P. Ali, F. A. Andreoiu, C. Ansari, S. Ball, G. C. Barton, C. J. https://orcid.org/0000-0001-5125-9619 Bhattacharjee, S. S. Bowry, M. Caballero-Folch, R. Chester, A. Gillespie, S. A. (sg581@york.ac.uk) Grinyer, G. F. Hackman, G. Jones, C. (cej103@york.ac.uk) Melon, B. Moukaddam, M. Nannini, A. Ruotsalainen, P. Starosta, K. Svensson, C. E. Wadsworth, R. https://orcid.org/0000-0002-4187-3102 Williams, J. (jw1945@york.ac.uk)
Copyright, Publisher and Additional Information:	© 2022 American Physical Society. Uploaded in accordance with the publisher’s self-archiving policy. Further copying may not be permitted; contact the publisher for details
Dates:	Accepted: 12 July 2022 Published: 19 July 2022
Institution:	The University of York
Academic Units:	The University of York > Faculty of Sciences (York) > Physics (York) The University of York > Faculty of Sciences (York) > Chemistry (York) The University of York > Faculty of Sciences (York) > Electronic Engineering (York)
Funding Information:	Funder Grant number SCIENCE AND TECHNOLOGY FACILITIES COUNCIL (STFC) ST/P003885/1 SCIENCE AND TECHNOLOGY FACILITIES COUNCIL (STFC) ST/L005727/1 SCIENCE AND TECHNOLOGY FACILITIES COUNCIL (STFC) ST/V001035/1
Depositing User:	Pure (York)
Date Deposited:	09 Sep 2022 12:00
Last Modified:	11 Apr 2025 23:29
Published Version:	https://doi.org/10.1103/PhysRevC.106.014312
Status:	Published
Refereed:	Yes
Identification Number:	10.1103/PhysRevC.106.014312
Related URLs:	http://www.scopus.com/inward/record.url?...
Open Archives Initiative ID (OAI ID):	oai:eprints.whiterose.ac.uk:190883

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Description: Improved measurement of the 02 + → 01 + E0 transition strength for 72Se using the SPICE spectrometer

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Improved measurement of the 02+→01+ E0 transition strength for Se 72 using the SPICE spectrometer

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