University of Oulu

Müller-Gatermann, C., Dewald, A., Fransen, C., Auranen, K., Badran, H., Beckers, M., Blazhev, A., Braunroth, T., Cullen, D., Fruet, G., Goldkuhle, A., Grahn, T., Greenlees, P., Herzáň, A., Jakobsson, U., Jenkins, D., Jolie, J., Julin, R., Juutinen, S., Konki, J., Leino, M., Litzinger, J., Nomura, K., Pakarinen, J., Peura, P., Procter, M., Rahkila, P., Ruotsalainen, P., Sandzelius, M., Sarén, J., Scholey, C., Sorri, J., Stolze, S., Taylor, M., Uusitalo, J., Zell, K. (2019) Shape coexistence in Hg178. Physical review C, 99 (5). doi:10.1103/PhysRevC.99.054325

Shape coexistence in ¹⁷⁸Hg

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Author: Mueller-Gatermann, C.1; Dewald, A.1; Fransen, C.1;
Organizations: 1Univ Cologne, Inst Kernphys, Zulpicher Str 77, D-50937 Cologne, Germany.
2Univ Jyvaskyla, Dept Phys, POB 35, FI-40014 Jyvaskyla, Finland.
3Argonne Natl Lab, Phys Div, Argonne, IL 60439 USA.
4Univ Manchester, Schuster Lab, Manchester M13 9PL, Lancs, England.
5Univ Strasbourg, CNRS, IPHC UMR 7178, F-67000 Strasbourg, France.
6Slovak Acad Sci, Inst Phys, SK-84511 Bratislava, Slovakia.
7Univ Liverpool, Oliver Lodge Lab, Liverpool L69 7ZE, Merseyside, England.
8Univ Helsinki, Dept Chem, Lab Radiochem, POB 55, FI-00014 Helsinki, Finland.
9Univ York, Dept Phys, York YO10 5DD, N Yorkshire, England.
10CERN, CH-1211 Geneva 23, Switzerland.
11Japan Atom Energy Agcy, Adv Sci Res Ctr, Tokai, Ibaraki 3191195, Japan.
12Univ Helsinki, Helsinki Inst Phys, POB 64, FIN-00014 Helsinki, Finland.
13TRIUMF, Westbrook Mall, Vancouver, BC V6T 2A3, Canada.
14Univ Oulu, Sodankyla Geophys Observ, FI-99600 Sodankyla, Finland.
15Univ Manchester, Div Canc Sci, Manchester M13 9PL, Lancs, England.
Format: article
Version: published version
Access: open
Online Access: PDF Full Text (PDF, 0.6 MB)
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Language: English
Published: American Physical Society, 2019
Publish Date: 2019-07-11


Lifetime measurements of excited states in ¹⁷⁸Hg have been performed using the ¹⁰³Rh(⁷⁸Kr,p2n) reaction at a beam energy of 354 MeV. The recoil-decay tagging (RDT) technique was applied to select the ¹⁷⁸Hg nuclei and associate the prompt γ rays with the correlated characteristic ground-state α decay. Lifetimes of the four lowest yrast states of ¹⁷⁸Hg have been determined using the recoil distance Doppler-shift (RDDS) method. The experimental data are compared to theoretical predictions with focus on shape coexistence. The results confirm the shift of the deformed prolate structures to higher lying states but also indicate their increasing deformation with decreasing neutron number.

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Series: Physical review. C
ISSN: 2469-9985
ISSN-E: 2469-9993
ISSN-L: 2469-9985
Volume: 99
Issue: 5
Article number: 054325
DOI: 10.1103/PhysRevC.99.054325
Type of Publication: A1 Journal article – refereed
Field of Science: 114 Physical sciences
Funding: This work was supported by the Deutsche Forschungs Gemeinschaft (DFG) under Contract No. DE 1516/3-1, by the EU Seventh Framework Programme, “Integrating Activities—Transnational Access” Project No. 262010 (EN-SAR), by the Academy of Finland under the Finnish Centre of Excellence Programme (Nuclear and Accelerator Based Physics Programme at JYFL), by the Slovak Research and Development Agency under Contract No. APVV-15-0255, and by the Slovak grant agency VEGA under Contract No. 2/0129/17.
Copyright information: © 2019 American Physical Society. This article is published by American Physical Society in Physical review C on 21 May 2019, available online: