Physics – Nuclear Physics – Nuclear Theory
Scientific paper
2000-05-09
Nucl.Phys. A679 (2001) 373-392
Physics
Nuclear Physics
Nuclear Theory
20 pages (Latex), 14 Postscript figures
Scientific paper
10.1016/S0375-9474(00)00365-1
We study the effect of a direct Giant Dipole Resonance ($GDR$) excitation in intermediate dinuclear systems with exotic shape and charge distributions formed in charge asymmetric fusion entrance channels. A related enhancement of the $GDR$ gamma yield in the evaporation cascade of the fused nucleus is expected. The dynamical origin of such $GDR$ extra strength will show up in a characteristic anisotropy of the dipole gamma-emission. A fully microscopic analysis of the fusion dynamics is performed with quantitative predictions of the $GDR$ photon yield based on a dynamics- statistics coupling model. In particular we focus our attention on the energy and mass dependence of the effect. We suggest a series of new experiments, in particular some optimal entrance channel conditions. We stress the importance of using the new available radioactive beams.
Baran Václav
Cabibbo M.
Colonna Maria
Toro Massimo Di
Tsoneva N.
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