Microscopic Description of $2\alpha$ Decay in $^{212}$Po and $^{224}$Ra Isotopes - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Phys.Rev.Lett. Année : 2021

Microscopic Description of $2\alpha$ Decay in $^{212}$Po and $^{224}$Ra Isotopes

J. Zhao
T. Nikšić
  • Fonction : Auteur
D. Vretenar
  • Fonction : Auteur

Résumé

A microscopic calculation of half-lives for both the α and 2α decays of Po212 and Ra224 is performed, using a self-consistent framework based on energy density functionals. A relativistic density functional and a separable pairing interaction of finite range are used to compute axially symmetric deformation energy surfaces as functions of quadrupole, octupole, and hexadecapole collective coordinates. Dynamical least-action paths are determined, that trace the α and 2α emission from the equilibrium deformation to the point of scission. The calculated half-lives for the α decay of Po212 and Ra224 are in good agreement with data. A new decay mode, the symmetric 2α emission, is predicted with half-lives of the order of those observed for cluster emission.

Dates et versions

hal-03552886 , version 1 (02-02-2022)

Identifiants

Citer

F. Mercier, J. Zhao, J.-P. Ebran, E. Khan, T. Nikšić, et al.. Microscopic Description of $2\alpha$ Decay in $^{212}$Po and $^{224}$Ra Isotopes. Phys.Rev.Lett., 2021, 127 (1), pp.012501. ⟨10.1103/PhysRevLett.127.012501⟩. ⟨hal-03552886⟩
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