Investigation of the role of shell structure in quasi-fission mass distributions

Details Investigation of the role of shell structure in quasi-fission mass distributions Investigation of the role of shell structure in quasi-fission mass distributions

2011-11-21

arxiv.org/abs/1111.4790v1

Physics

Nuclear Physics

Nuclear Experiment

4 pages, 4 figures

Scientific paper

Systematic measurements of mass-ratio distributions for fission following collisions of $^{48}$Ti projectiles with even-even target nuclei from $^{144}$Sm to $^{208}$Pb have been made at sub-barrier energies. They show the presence of quasifission, and depend strongly on target nucleus deformation and the fissility of the composite nucleus. A new framework to analyse systematic mass-ratio measurements allows direct comparison with the trends expected from shell structure, independent of assumptions or fits. This indicates that quasi-fission mass distributions show trends consistent with low energy mass-asymmetric fission of the same actinide elements.

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