M. Samri et al., STATISTICAL AND SEQUENTIAL BREAKUP OF MG-24 IN PERIPHERAL REACTIONS AT INTERMEDIATE ENERGIES, Nuclear physics. A, 583, 1995, pp. 427-432
The fragmentation of the projectile Mg-24, excited in peripheral colli
sions on Au-197 and C-12 targets, has been investigated at 25A MeV and
35A MeV with a large scintillator detector array. Projectile breakup
events were selected in the off-line analysis, by requiring that the t
otal detected charge in one event be equal to that of the projectile.
The projectile-like nucleus (PLN) excitation energies have been recons
tructed and compared to results at 50A MeV and 70A MeV. The branching
ratios of 2-, 4-, 5-, and 6-fold decays show a linear dependence, char
acteristic of statistical decay. Global variable analysis in terms of
relative angles was applied to the six-alpha exit channel and the corr
esponding data have been compared to theoretical calculations based on
simultaneous and sequential binary decay. The latter have been divide
d into sequential fission and sequential evaporation decays. The data
has been found to be consistent with a sequential evaporation decay me
chanism for a wide range of the intermediate-energy domain.