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 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