University of Oulu

J. Hilton et al. Phys. Rev. C 100, 014305 – Published 8 July 2019.

α-spectroscopy studies of the new nuclides ¹⁶⁵Pt and ¹⁷⁰Hg

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Author: Hilton, J.1,2; Uusitalo, J.1; Saren, J.1;
Organizations: 1Univ Jyvaskyla, Dept Phys, POB 35, FI-40014 Jyvaskyla, Finland.
2Univ Liverpool, Oliver Lodge Lab, Liverpool L69 7ZE, Merseyside, England.
3Lmam Mohammad Ibn Saud Islamic Univ IMISU, Riyadh 11623, Saudi Arabia.
4Lund Univ, Dept Phys, S-22100 Lund, Sweden.
5Univ York, York YO10 5DD, N Yorkshire, England.
6Slovak Acad Sci, Inst Phys, SK-84511 Bratislava, Slovakia.
7CERN, CH-1211 Geneva 23, Switzerland.
8Sci Tech Daresbury, STFC Daresbury Lab, Warrington WA4 4AD, Cheshire, England.
9Univ Oulu, Sodankyla Geophys Observ, FI-99600 Sodankyla, Finland.
10Argonne Natl Lab, Phys Div, 9700 South Cass Ave, Lemont, IL 60439 USA.
Format: article
Version: published version
Access: open
Online Access: PDF Full Text (PDF, 0.7 MB)
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Language: English
Published: American Physical Society, 2019
Publish Date: 2019-09-24


The new nuclides \(^{165}\mathrm{Pt}\) and \(^{170}\mathrm{Hg}\) were produced in the reactions \(^{92}\mathrm{Mo}(^{78}\mathrm{Kr},5n)\) and \(^{96}\mathrm{Ru}(^{78}\mathrm{Kr},4n)\) at bombarding energies of 418 MeV and 390 MeV, respectively. For \(^{170}\mathrm{Hg}\) an α-particle energy of \(E_{α} = 7590(30)\) keV and half-life of \(t_{1/2} = 0.08^{+0.40}_{−0.04}\)ms were deduced, while for \(^{165}\mathrm{Pt}\) the corresponding values were 7272(14) keV and \(0.26^{+0.26}_{−0.09}\)ms. Comparison of the reduced α-decay widths with systematics indicates that both α decays are unhindered. Although combining the measured α-decay Q values with extrapolated masses suggests that both new nuclides are unbound to two-proton emission by more than 1 MeV, their α-decay half-lives are too short for this decay mode to compete. Improved data were also obtained for \(^{166,167}\mathrm{Pt}\), produced via the \(^{96}\mathrm{Ru}(^{78}\mathrm{Kr},α4n)\) and \(^{96}\mathrm{Ru}(^{78}\mathrm{Kr},α3n)\) reactions at bombarding energies of 390 MeV and 418 MeV.

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Series: Physical review. C
ISSN: 2469-9985
ISSN-E: 2469-9993
ISSN-L: 2469-9985
Volume: 100
Article number: 014305
DOI: 10.1103/PhysRevC.100.014305
Type of Publication: A1 Journal article – refereed
Field of Science: 114 Physical sciences
Funding: This work has been supported by the Academy of Finland under the Finnish Centre of Excellence Program (Contract No. 213503), the Academy of Finland (Grant No. 257562), the United Kingdom Science and Technology Facilities Council, the EU HORIZON2020 programme “Infrastructures” [Project No. 654002 (ENSAR2)], the Slovak Research and Development Agency (Contract No. APVV-15-0225), and by the Slovak grant agency VEGA (Contract No. 2/0129/17). J.H. acknowledges financial support from the University of Liverpool.
Copyright information: © 2019 American Physical Society.