Reaction dependence of nuclear decay linewidths

Abstract

Various light- and heavy-ion reactions, 20 E 8Be*(2 + , 2.9 MeV) and 16O*(1-, 9.6 MeV). Although slight differences (R) are self-consistent and indicate little if any reaction dependence (R by 20 % or more, however, and thus care must be taken in comparing decay widths inferred from nuclear reactions with those from scattering resonances. Reduced formal [alpha]-decay widths of [gamma][lambda]2 = 680 +/- 100 keV (s = 4.8 fm) and [gamma][lambda]2 = 350 +/- 50 keV(s = 5.4 fm), corresponding to [theta][lambda]2 = 0.50 and [theta][lambda]2 = 0.49 are deduced for 8Be*(2 + , 2.9 MeV) and 16O*(1-, 9.6 MeV) using the nuclear-reaction [Gamma]R values and a particular set of [alpha]-nucleus potentials.