Nota de FísicaPublicado
Photofissility at 1 GeV for Nuclei throughout the Periodic Table
S. B. Duarte; V. Morcelle; A. Deppman
Dados da publicação
- Autores
- S. B. Duarte; V. Morcelle; A. Deppman
- Tipo
- Nota de Física
- Status
- Publicado
- Data de publicação
- 20/12/2005
- Descrição
- A new approach to evaluate nuclear photofissilities at incident photon energies above the pion photoproduction threshold has been recently developed and proved to describe successfully the fissilities of $^{\mbox{\footnotesize nat}}$Pb and $^{232}$Th target nuclei at energies $\sim 0.2-4.0$ GeV. The method is merely a simple, semiempirical description of the photofission reactions in which fissility, $f$, is governed by two basic quantities, namely, i) the first-chance fission probability, $\bar{f}_1$, for the average cascade residual, and ii) the slope, $\bar{s}$, of the chance-fission probability associated with the average evaporative sequence of fissionable residuals. In the present work we have extended this approach to analyse photofissity data that have been accumulated over the past fourty years or so, measured at 1 GeV, for nearly fourty target nuclei extending from Ti up to Np. Results have shown that the variation of fissility with $Z^2/A$ could be described quite satisfactorily by the proposed model.
- Ano
- 2005
- Número
- CBPF-NF-015/05
- Vínculo com tese
- Não
- Vínculo com bolsa
- Não