STATISTICAL AND SEQUENTIAL BREAKUP OF MG-24 IN PERIPHERAL REACTIONS AT INTERMEDIATE ENERGIES

Citation
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
Citations number
24
Categorie Soggetti
Physics, Nuclear
Journal title
ISSN journal
03759474
Volume
583
Year of publication
1995
Pages
427 - 432
Database
ISI
SICI code
0375-9474(1995)583:<427:SASBOM>2.0.ZU;2-#
Abstract
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.