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

D. J. Hinde; R. du Rietz; R. G. Thomas; M. Dasgupta; C. Simenel; M. L. Brown; M. Evers; D. H. Luong; L. R. Gasques; R. Rafiei; A. Wakhle

arXiv · 1111.4790

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

D. J. Hinde·R. du Rietz·R. G. Thomas·M. Dasgupta·C. Simenel·M. L. Brown·M. Evers·D. H. Luong·L. R. Gasques·R. Rafiei·A. Wakhle

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Abstract

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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D. J. Hinde, R. du Rietz, R. G. Thomas, M. Dasgupta, C. Simenel, M. L. Brown, M. Evers, D. H. Luong, L. R. Gasques, R. Rafiei, A. Wakhle. 2011-11-21. Investigation of the role of shell structure in quasi-fission mass distributions. https://arxiv.org/abs/1111.4790

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