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Europhysics Letters (EPL) 77 (2007) 62001
Alpha-decay lifetimes semiempirical relationship including shell effects
D.N. Poenaru1, R.A. Gherghescu1, N. Carjan2

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 Z=52-118 and 142 transuranium nuclei including superheavies (Z=92-118), respectively) are compared with those obtained by using the universal curve and the Viola-Seaborg semiempirical relationship.
1 :  NIPNE - Horia Hulubei National Institute of Physics and Nuclear Engineering
2 :  CENBG - Centre d'Etudes Nucléaires de Bordeaux Gradignan
Physique/Physique Nucléaire Théorique
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