Comparison of fission and quasi-fission modes

Abstract

Quantum shell effects are known to affect the formation of fragments in nuclear fission. Shell effects also affect quasi-fission reactions occurring in heavy-ion collisions. Systematic time-dependent Hartree-Fock simulations of 50Ca+176Yb collisions show that the mass equilibration between the fragments in quasi-fission is stopped when they reach similar properties to those in the asymmetric fission mode of the 226Th compound nucleus. Similar shell effects are then expected to determine the final repartition of nucleons between the nascent fragments in both mechanisms. Future experimental studies that could test these observations are discussed.

8 pages, 4 figures, 1 table

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Cited by in corpus (13)

• Impact of tensor force on quantum shell effects in quasifission reactions
• Time-dependent Hartree-Fock study of quasifission trajectories in reactions forming ${}^{294}$Og
• Hartree-Fock-Bogoliubov study of quantum shell effects on the path to fission in ${}^{180}$Hg, ${}^{236}$U and ${}^{256}$Fm
• Ternary quasifission in collisions of actinide nuclei
• Shell Effects in Quasi-fission in Reactions Forming 226Th Compound Nucleus
• Nuclear Quantum Many-Body Dynamics: From Collective Vibrations to Heavy-Ion Collisions (2nd edition)
• Microscopic Study of Spin Transfer in Near-Barrier Nuclear Reactions
• Shell effects in quasi-fission for calcium induced reactions forming thorium isotopes
• Multimodal fission from self-consistent calculations
• Impact of octupole correlation on the inverse quasifission in ${}^{160}\text{Gd}+{}^{186}\text{W}$ collisions
• Shell effects in quasifission toward ${}^{180}\mathrm{Hg}$: insights into fission asymmetric modes
• Microscopic quasifission dynamics of the ${}^{54}\text{Cr}+{}^{243}\text{Am}$ reaction
• The Quest for Superheavy Nuclei: A Theoretical Perspective