Naslov
Microscopic Description of 2α Decay in ^212Po and ^224Ra Isotopes

Autori
Mercier, F. ; Zhao, J. ; Ebran, J.-P. ; Khan, E. ; Nikšić, Tamara ; Vretenar, Dario

Izvornik
Physical review letters (0031-9007) 127 (2021), 1; 012501, 6

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
energy density functionals

Sažetak
A microscopic calculation of half-lives for both the α and 2α decays of ^212Po and ^224Ra 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 ^212Po and ^224Ra 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.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

POVEZANOST RADA