Change in structure between the I = 1/2 states in 181Tl and 177,179Au

• DOI: 10.1016/j.physletb.2018.10.005
• Publication Date: 2018-10-05T17:26:48Z
• Authors: J.G. Cubiss; A.E. Barzakh; A.N. Andreyev; M. Al Monthery; N. Althubiti; B. Andel; S. Antalic; D. Atanasov; K. Blaum; T.E. Cocolios; T. Day Goodacre; R.P. de Groote; A. de Roubin; G.J. Farooq-Smith; D.V. Fedorov; V.N. Fedosseev; R. Ferrer; D.A. Fink; L.P. Gaffney; L. Ghys; A. Gredley; R.D. Harding; F. Herfurth; M. Huyse; N. Imai; D.T. Joss; U. Köster; S. Kreim; V. Liberati; D. Lunney; K.M. Lynch; V. Manea; B.A. Marsh; Y. Martinez Palen...; P.L. Molkanov; P. Mosat; D. Neidherr; G.G. O'Neill; R.D. Page; T.J. Procter; E. Rapisarda; M. Rosenbusch; S. Rothe; K. Sandhu; L. Schweikhard; M.D. Seliverstov; S. Sels; P. Spagnoletti; V.L. Truesdale; C. Van Beveren; P. Van Duppen; M. Veinhard; M. Venhart; M. Veselský; F. Wearing; A. Welker; F. Wienholtz; R.N. Wolf; S.G. Zemlyanoy; K. Zuber
• Keywords: nuclear deformation; decay spectroscopy; Physics; QC1-999; Nuclear physics; Gold nuclei; gold nuclei; Decay spectroscopy; Thallium nuclei; [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex]; 530; 01 natural sciences; Nuclear deformation; nuclear physics; 0103 physical sciences; laser spectroscopy; Präzisionsexperimente - Abteilung Blaum; Laser spectroscopy; info:eu-repo/classification/ddc/530; thallium nuclei

The first accurate measurements of the α-decay branching ratio and half-life Iπ=1/2+ ground state in 181Tl have been made, along with determination magnetic moments I=1/2 spin assignments states 177,179Au. results are discussed within complementary systematics reduced widths nuclear g factors low-lying, neutron-deficient lead region. findings shed light on unexpected hindrance 1/2+→1/2+, 181Tl→g177Aug α decay, which is explained by a mixing π3s1/2 π2d3/2 configurations 177Aug, whilst 181Tlg remains near-pure π3s1/2. This conclusion inferred from factor 177Aug has an intermediate value between those states. A similar mixed configuration proposed for 179Au. may provide evidence triaxial shapes these nuclei.