Microscopic description of the self-conjugate $^{108}$Xe and $^{104}$Te $\alpha$-decay chain
| Autor: | Mercier, F., Zhao, J., Lasseri, R. -D, Ebran, J. -P., Khan, E., Niksic, T., Vretenar, D. |
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| Rok vydání: | 2020 |
| Předmět: | |
| Zdroj: | Phys. Rev. C 102, 011301 (2020) |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1103/PhysRevC.102.011301 |
| Popis: | A microscopic calculation of half-lives for the recently observed $^{108}$Xe $\to$ $^{104}$Te $\to$ $^{100}$Sn $\alpha$-decay chain is performed using a self-consistent framework based on energy density functionals. The relativistic density functional DD-PC1 and a separable pairing interaction of finite range are used to compute axially-symmetric deformation energy surfaces of $^{104}$Te and $^{108}$Xe as functions of quadrupole, octupole and hexadecupole collective coordinates. Dynamic least-action paths are determined that trace the $\alpha$-particle emission from the equilibrium deformation to the point of scission. The calculated half-lives: 197 ns for $^{104}$Te and 50 $\mu$s for $^{108}$Xe, are compared to recent experimental values of the half-lives of superallowed $\alpha$-decay of $^{104}$Te: $< 18$ ns, and $^{108}$Xe: 58$^{+106}_{-23}$ $\mu$s. Comment: 4 pages, 4 figures |
| Databáze: | arXiv |
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