Abstract
Fission of super-heavy nuclei: Fragment mass distributions and their dependence on excitation energy
Highlights
Projects to measure fission fragment properties for the heaviest elements (Z > 106) are underway at several heavy-ion facilities around the world
Theoretical calculations are very useful. On one side they can improve the design of such experiments and on the other side they provide predictions to compare with data allowing to test various theoretical assumptions
Instead we show the first two moments of these distributions as a function of the mass A of the fissioning isotope in Figures 5 and 6, respectively
Summary
Fission of super-heavy nuclei: Fragment mass distributions and their dependence on excitation energy. The mass and total kinetic energy distributions of the fission fragments in the fission of even-even isotopes of superheavy elements from Hs (Z=108) to Og (Z=118) are estimated using a pre-scission point model. The distributions of the total kinetic energy (TKE) of the fragments are calculated (in the point-charge approximation). In Hs, Ds and Cn isotopes a transition from symmetric to asymmetric fission is predicted with increasing neutron number N (at N ≈ 168). When the excitation energy increases from 0 to 30 MeV, the peaks (one or two) of the mass distributions become only slightly wider.
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