Volume 77, Number 6, March 2007
|Number of page(s)||4|
|Published online||02 March 2007|
Alpha-decay lifetimes semiempirical relationship including shell effects
Horia Hulubei National Institute of Physics and Nuclear Engineering (IFIN-HH) - RO-077125 Bucharest-Magurele, Romania
2 Centre d'Etudes Nucléaires de Bordeaux Gradignan (CENBG) - BP 120, F-33175 Gradignan Cedex, France
Accepted: 5 February 2007
A new version of the semiempirical formula based on fission approach of alpha decay is derived, by using the optimum values of the fitting parameters determined for even-even nuclei, combined with hindrance factors for even-odd, odd-even, and odd-odd nuclides. The deviations from experimental data for two regions of nuclear chart (493 alpha emitters with and 142 transuranium nuclei including superheavies (), respectively) are compared with those obtained by using the universal curve and the Viola-Seaborg semiempirical relationship.
PACS: 23.60.+e – α decay / 21.10.Tg – Lifetimes / 27.90.+b – Properties of specific nuclei listed by mass ranges:
© Europhysics Letters Association, 2007
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