Microscopic analysis of structural evolution in the Pt-Hg region
Published:
Oct 17, 2022
Keywords:
Shape transitions Hg isotopes Covariant density functionals Collective states
Abstract
The phenomena of shape-phase transitions and shape coexistence in neutron deficient even-even Pt and Hg isotopes are investigated, using a five-dimensional collective Hamiltonian (5DCH) based on covariant density-functional theory. The triaxial deformation energy surfaces in Pt isotopes display a transition from prolate (188Pt) to triaxial or oblate (190-198Pt), and to near spherical (198Pt) shapes. The calculations suggest coexisting configurations in 190Hg, γ-soft potential energy surfaces in 192-198Hg and a more spherical structure in 200Hg. The corresponding 5DCH model calculations confirm the structural evolution in this region and suggest more increased collectivity than what can be deduced from the data.
Article Details
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Prassa, V., & Karakatsanis, K. (2022). Microscopic analysis of structural evolution in the Pt-Hg region. HNPS Advances in Nuclear Physics, 28, 79–85. https://doi.org/10.12681/hnps.3601
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- Vol. 28 (2021): HNPS2021
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- Oral contributions
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
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