α-Cluster structure above double-shell closures and α-decay of 104Te
| Autor: | C. A. da Rocha, H. Miyake, Thereza Borello-Lewin, C. Frajuca, M. A. Souza |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Physics
Nuclear and High Energy Physics Range (particle radiation) 010308 nuclear & particles physics Gaussian Shell (structure) 01 natural sciences Molecular physics lcsh:QC1-999 Core (optical fiber) symbols.namesake medicine.anatomical_structure 0103 physical sciences symbols medicine Cluster (physics) 010306 general physics Ground state Nucleus lcsh:Physics Free parameter |
| Zdroj: | Physics Letters B, Vol 793, Iss, Pp 8-12 (2019) |
| ISSN: | 0370-2693 |
| DOI: | 10.1016/j.physletb.2019.04.019 |
| Popis: | An analysis of the α + core properties of 104Te along with a global discussion on the α-cluster structure above the double-shell closures is presented from the viewpoint of the local potential model. The α + core interaction is described by a nuclear potential of (1 + Gaussian)×(W.S. + W.S.3) shape with two free parameters, which has been successfully tested in nuclei of different mass regions. The model produces Q α values and α-decay half-lives for 104Te in agreement with the 2018 experimental data of Auranen et al. in the energy range 5.13 MeV Q α 5.3 MeV using an α preformation factor P α = 1 . The comparison of the calculated reduced α-widths for the ground state bands of 104Te, 94Mo and 212Po indicates that 104Te has an α-cluster degree significantly higher than 94Mo and much higher than 212Po. These results point to 104Te as a preferential nucleus for α-clustering in the N , Z = 50 region and corroborate the statement on the superallowed α-decay in 104Te. |
| Databáze: | OpenAIRE |
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