Sharp change over from compound nuclear fission to shape dependent quasi fission

Details Sharp change over from compound nuclear fission to shape dependent quasi fission Sharp change over from compound nuclear fission to shape dependent quasi fission

2008-09-17

arxiv.org/abs/0809.2873v1

Phys.Rev.C79:054607,2009

Physics

Nuclear Physics

Nuclear Experiment

4 pages,6 figures

Scientific paper

10.1103/PhysRevC.79.054607

Fission fragment mass distribution has been measured from the decay of $^{246}$Bk nucleus populating via two entrance channels with slight difference in mass asymmetries but belonging on either side of the Businaro Gallone mass asymmetry parameter. Both the target nuclei were deformed. Near the Coulomb barrier, at similar excitation energies the width of the fission fragment mass distribution was found to be drastically different for the $^{14}$N + $^{232}$Th reaction compared to the $^{11}$B + $^{235}$U reaction. The entrance channel mass asymmetry was found to affect the fusion process sharply.

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