Nota de FísicaPublicado
Alpha Decay Half-Life of Bismuth Isotopes
O. A. P. Tavares; Emil de Lima Medeiros; M. L. Terranova
2004
Dados da publicação
- Autores
- O. A. P. Tavares; Emil de Lima Medeiros; M. L. Terranova
- Tipo
- Nota de Física
- Status
- Publicado
- Data de publicação
- 2004
- Descrição
- The observed alpha decay half-life-values of favoured alpha transitions of $\ell = 5$ in bismuth isotopes have been analyzed in the framework of a model based on the quantum mechanical tunnelling through a potential barrier where the centrifugal and overlapping effects are taken into account. In particular, the very recent measured alpha decay half-life-value of $(1.9\pm 0.2)\times 10^{19}$~y for the unique naturally occurring $^{209}$Bi isotope has been reproduced by the present approach as $(1.0\pm 0.3)\times 10^{19}$~y. Besides, the partial alpha decay half-lives for a number of unmeasured alpha transitions of $\ell = 5$ in bismuth isotopes are predicted by the model, thus making possible to evidence the influence of the 126 neutron shell closure on the alpha decay half-life. The present approach has shown to be successfully applicable to other isotopic sequences of alpha-emitter nuclides.
- Ano
- 2004
- Número
- CBPF-NF-033/04
- Vínculo com tese
- Não
- Vínculo com bolsa
- Não