Description of the asymmetric to symmetric fission transition in the neutron-deficient thorium isotopes: Role of the tensor force
| Autor: | Marta Anguiano, R. N. Bernard, N. Pillet, L. M. Robledo |
|---|---|
| Přispěvatelé: | UAM. Departamento de Física Teórica, Direction des Applications Militaires (DAM), Commissariat à l'énergie atomique et aux énergies alternatives (CEA), École normale supérieure - Cachan (ENS Cachan) |
| Rok vydání: | 2020 |
| Předmět: |
Nuclear Theory
[PHYS.NUCL]Physics [physics]/Nuclear Theory [nucl-th] Fission Bogoliubov Theory FOS: Physical sciences Simmetric fission 01 natural sciences Thorium Isotopes Nuclear Theory (nucl-th) Isotopes 0103 physical sciences Nuclear Reactions Neutron Tensor 222Th 010306 general physics Nuclear Experiment Nuclear theory Physics 010308 nuclear & particles physics 226Th Física Actinide 3. Good health Potential energy surface Nuclear Properties Atomic physics 230Th Isotopes of thorium |
| Zdroj: | Biblos-e Archivo. Repositorio Institucional de la UAM instname Phys.Rev.C Phys.Rev.C, 2020, 101 (4), pp.044615. ⟨10.1103/PhysRevC.101.044615⟩ Physical Review C Physical Review C, American Physical Society, 2020, 101 (4), pp.044615. ⟨10.1103/PhysRevC.101.044615⟩ |
| ISSN: | 2469-9985 2469-9993 |
| Popis: | In the present study, we have investigated the impact of the tensor force on fission paths, in particular the symmetric and asymmetric barriers in 230 Th, 226 Th, 222 Th and 216 Th isotopes which display an asymmetric to symmetric fission transition. This analysis has been performed within the HFB approach with (Q 20 ,Q 30 ,Q 40 ) as collective variable constraints, using the D1ST2a Gogny+tensor term interaction and comparing to the standard D1S Gogny interaction results. The effects from the tensor term on the potential energy surface landscape, and especially on barrier heights and its topology by opening a new valley in agreement with experimental data, are found to be crucial in the description of exotic actinide fission. We conclude that a tensor term should be integrated to the long range part of the effective interaction for a better description of the fission. Comment: 24 pages, accepted in Phys. Rev. C |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|