Nuclear lifetimes for cluster radioactivities

摘要: Abstract Calculated partial half-lives and Q values of the most probable decays by spontaneous cluster emission are listed for nuclides with Z = 52–122. Superheavy nuclei far off β-stability line included; input mass from tables published in 1988 Atomic Data Nuclear Tables (Vol. 39 , No. 2). Parent here selected to meet following criteria: lifetime 30 s branching ratio relative α decay >10 −18 . α-decay given all listed. A larger set parent presented a T E X file, where 50 ratios −30 accepted provided nucleus has been measured or estimated systematics Wapstra et al. The lifetimes emissions calculated using analytical superasymmetric fission model even-odd effects taken into account; experimental deduced semiempirical formula.