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

2011/11/21 by D. J. Hinde, R. du Rietz, Hinde, D. J. +19
Physics and Astronomy · #FOS: Physical sciences #High-Energy Particle Collisions Research #Nuclear Experiment (nucl-ex) #Nuclear physics research studies #Quantum Chromodynamics and Particle Interactions

paper · pdf · doi:10.48550/arxiv.1111.4790

openalex publication_date 2011/11/21 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

Systematic measurements of mass-ratio distributions for fission following collisions of ⁴⁸Ti projectiles with even-even target nuclei from ¹⁴⁴Sm to ²⁰⁸Pb 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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