University of Oulu

D O’Donnell et al 2020, J. Phys. G: Nucl. Part. Phys. 47, 095103.

High-spin states of ²¹⁸Th

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Author: O'Donnell, D.1,2,3; Page, R. D.2; Grahn, T.4;
Organizations: 1Univ West Scotland, Sch Comp Engn & Phys Sci, SUPA, Paisley PA1 2BE, Renfrew, Scotland.
2Univ Liverpool, Oliver Lodge Lab, Liverpool L69 7ZE, Merseyside, England.
3Indian Inst Technol, Dept Phys, Roorkee 247667, Uttar Pradesh, India.
4Univ Jyvaskyla, Dept Phys, POB 35, FI-40014 Jyvaskyla, Finland.
5Univ Sulaimani, Coll Educ, Dept Phys, POB 334, Sulaimani, Kurdistan Regio, Iraq.
6Lawrence Livermore Natl Lab, 7000 East Ave, Livermore, CA 94550 USA.
7Univ York, Dept Phys, York YO10 5DD, N Yorkshire, England.
8STFC Daresbury Lab, Warrington WA4 4AD, Cheshire, England.
9CERN, CH-1211 Geneva 23, Switzerland.
10Ege Univ, Fac Sci, Dept Phys, TR-35100 Izmir, Turkey.
11Sakarya Univ, Fac Sci & Arts, Dept Phys, TR-54187 Sakarya, Turkey.
Format: article
Version: published version
Access: open
Online Access: PDF Full Text (PDF, 1.8 MB)
Persistent link:
Language: English
Published: IOP Publishing, 2020
Publish Date: 2020-12-03


High-spin states in the N = 128 nucleus ²¹⁸Th have been investigated following fusion–evaporation reactions, using the recoil-decay tagging technique. Due to the short-lived nature of the ground state of ²¹⁸Th prompt γ rays have been correlated with the α decay of the daughter nucleus ²¹⁴Ra. The level scheme representing the decay of excited states has been extended to (16⁺) with the observation of six previously unreported transitions. The observations are compared with the results of shell model calculations and within the context of the systematics of neighbouring nuclei.

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Series: Journal of physics. G, Nuclear and particle physics
ISSN: 0954-3899
ISSN-E: 1361-6471
ISSN-L: 0954-3899
Volume: 47
Issue: 9
Article number: 095103
DOI: 10.1088/1361-6471/aba16c
Type of Publication: A1 Journal article – refereed
Field of Science: 115 Astronomy and space science
Funding: Financial support for this work has been provided by the UK Science and Technology Facilities Council (STFC) and by the EU 7th Framework Programme 'Integrating Activities—Transnational Access', Project No.: 262010 (ENSAR) and by the Academy of Finland under the Finnish Centre of Excellence Programme 2012-2017 (Nuclear and Accelerator Based Physics Programme at JYFL). TG acknowledges the support of the Academy of Finland, contract number 131665. The authors acknowledge the support of GAMMAPOOL for the loan of the JUROGAM detectors. The authors would also like to express their gratitude to the technical staff of the Accelerator Laboratory at the University of Jyväskylä for their support.
Copyright information: © 2020 The Author(s). Published by IOP Publishing Ltd. Original content from this work may be used under the terms of the Creative Commons Attribution 4.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.