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- Title
Spectroscopy of <sup>187</sup>Tl: shape coexistence.
- Authors
Guo, C. Y.; Zhang, W. Q.; Huang, H.; Zhang, S. Q.; Li, Z. H.; Liu, Z.; Hua, H.; Luo, D. W.; Wu, H. Y.; Andreyev, A. N.; Seweryniak, D.; Andel, B.; Antalic, S.; Barzakh, A. E.; Block, M.; Bronis, A.; Carpenter, M. P.; Copp, P.; Cubiss, J. G.; Doherty, D. T.
- Abstract
The prompt and delayed γ -ray spectra of 187Tl was studied via the 142Nd(50Cr, 3p2n)187Tl fusion-evaporation reaction at a beam energy of 255 MeV. An enhanced level scheme of 187Tl was established. The collective bands with one-quasiparticle configurations from the 2 f 7 / 2 , 1 h 9 / 2 , 1 h 11 / 2 and 1 i 13 / 2 orbitals and high-lying structures with possible three-quasiparticle configurations are investigated in terms of the tilted axis cranking covariant density functional theory. At low excitation energy, the rotational bands with one-quasiparticle configurations reflect coexistence of three shapes: prolate, triaxial, and oblate. The possible shapes of two microsecond isomers at high excitation energy are proposed.
- Publication
European Physical Journal A -- Hadrons & Nuclei, 2024, Vol 60, Issue 8, p1
- ISSN
1434-6001
- Publication type
Article
- DOI
10.1140/epja/s10050-024-01395-3