Physics NotePublished
Systematics of alpha decay half-life: new evaluations for alpha-emitter nuclides
Emil de Lima Medeiros; S. B. Duarte; M.M.N. Rodrigues
Publication details
- Authors
- Emil de Lima Medeiros; S. B. Duarte; M.M.N. Rodrigues
- Type
- Physics Note
- Status
- Published
- Publication date
- 26/06/2006
- Description
- A semiempirical model based on the quantum mechanical tunnelling mechanism of alpha emission from nuclei has been used to systematize the alpha decay half-lives of a set of 336 nuclides, comprising all the alpha-emitter nuclides whose ${T_{1/2}}_{\alpha}$-data for ground-state to ground-state transitions of mutual angular momentum $\ell = 0$ are known. With a minimum of data rejection (only $\sim 5$\% of cases), the procedure has been successful in reproducing quite satisfactorily (within a factor $\sim 2$) most of the cases ($\sim 80$\%) investigated. The few significant discrepancies found between measured and calculated results are analysed and discussed. Also reported is the prediction from the model for possible new alpha-emitter nuclides, namely $^{180}$W, $^{184}$Os, and $^{228}$Ra for which cases the calculated partial alpha decay half-lives fall within the range of half-lives measurable by the current techniques.
- Year
- 2006
- Linked to a thesis
- No
- Linked to a grant
- No