Schaleneffekt und α-Halbwertszeit

Abstract

For the prediction of half-lives for α-decay a semiempirical equation is given. Taking into account a mean excitation energy of the daughter nuclei the constants in the equation for the α-half-lives were reevaluated using the latest published decay schemes. The ratios of experimental and calculated half-lives show a systematic behaviour if plotted versus the shell effects. Using this correlation the α-half-lives for unknown nuclides can be predicted with an improved accuracy.