Alpha-decay lifetimes semiempirical relationship including shell effects

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 f...

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Bibliographic Details
Published in:Europhysics letters 2007-03, Vol.77 (6), p.62001-62001 (4)
Main Authors: Poenaru, D. N, Gherghescu, R. A, Carjan, N
Format: Article
Language:English
Subjects:
21.10.Tg
23.60.+e
27.90.+b
Nuclear Theory
Physics
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Summary: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 $Z=52\hbox{--} 118$ and 142 transuranium nuclei including superheavies ($Z=92\hbox{--} 118$), respectively) are compared with those obtained by using the universal curve and the Viola-Seaborg semiempirical relationship.
ISSN:0295-5075
1286-4854
DOI:10.1209/0295-5075/77/62001