A detailed α-decay spectroscopy study of Tl180 has been performed at ISOLDE (CERN). Z-selective ionization by the Resonance Ionization Laser Ion Source (RILIS) coupled to mass separation provided a high-purity beam of Tl180. Fine-structure α decays to excited levels in the daughter Au176 were identified and an α-decay scheme of Tl180 was constructed based on an analysis of α-γ and α-γ-γ coincidences. Multipolarities of several γ-ray transitions deexciting levels in Au176 were determined. Based on the analysis of reduced α-decay widths, it was found that all α decays are hindered, which signifies a change of configuration between the parent and all daughter states.
|Number of pages||11|
|Journal||Physical Review C - Nuclear Physics|
|Publication status||Published - 28 Nov 2017|
Bibliographical noteFunding Information:
We thank the ISOLDE Collaboration for providing excellent beams and the GSI Target Group for manufacturing the carbon foils. This work has been supported by FWO-Vlaanderen (Belgium), by GOA/2010/010 (BOF KU Leuven), by the Interuniversity Attraction Poles Programme initiated by the Belgian Science Policy Office (BriX network P7/12), by the European Commission within the Seventh Framework Programme through I3-ENSAR (Contract No. RII3-CT-2010-262010), by a grant from the European Research Council (ERC-2011-AdG-291561-HELIOS), by the European Union's Horizon 2020 research and innovation programme under Grant Agreement No. 654002 (ENSAR2), by the U.K. Science and Technology Facilities Council, by the Slovak Research and Development Agency (Contracts No. APVV-0105-10, No. APVV-14-0524, and No. APVV-0177-11), and by Slovak grant agency VEGA (Contracts No. 1/0532/17 and No. 2/0129/17).
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