Nota de FísicaPublicado
Toward an accurate determination of half-life of Sm isotope
O. A. P. Tavares; M. L. Terranova
Dados da publicação
- Autores
- O. A. P. Tavares; M. L. Terranova
- Tipo
- Nota de Física
- Status
- Publicado
- Data de publicação
- 05/04/2018
- Descrição
- The task of an accurate determination of alpha-decay rate of 147Sm isotope, a topic of importance for both basic and applied science, has been faced in the present research following two different routes. First, a critical review and data analysis of the whole set of half-life-values obtained up today that yielded a value of (106.3 ? 0.5) Ga. Second, a one-parameter, semi-empirical model for alpha emission from nuclei, developed in the framework of the quantum mechanical tunneling mechanism through a Coulomb-plus-centrifugal-plus-overlapping potential barrier, that yielded a value of (108.2 ? 3.0) Ga. The good agreement found between the half-life values obtained from these procedures represents a net progress towards the assessment of a reliable 147Sm alpha-decay rate to be used in geo- and cosmo-chronological investigations.
- Ano
- 2018
- Número
- CBPF-NF-005/18
- Vínculo com tese
- Não
- Vínculo com bolsa
- Não