|La physique dans tous ses états|
|Date||June 20 > 20, 2023 - 11h|
|Location||GANIL, room 105|
by Hope Donglo, 2d year PhD student at GANIL
The so-called superheavy elements are nuclei with atomic charges (Z) greater than 100. They are predicted to be centred around Z = 114-126 and the neutron numbers (N) = 172-184 known as ”the island of stability”  because of extra stability due to the quantum shell effect [2, 3]. Since their predictions, experimental and theoretical efforts have been devoted towards their discovery primarily through the fusion-evaporation reaction mechanism .
The synthesis of superheavy elements is a difficult experimental challenge because their cross- section decreases with increasing atomic charge. Furthermore, there are limited projectile- target combinations that can be used in this reaction. Hence, there are theoretical simula- tions to guide the experiments. The theoretical formalism considered the reaction to be a three-stage process, namely, capture, formation, and survival . The formation is an ill- defined step due to the lack of consensus on its modelling. In this presentation, I report on the progress made in incorporating the formation probability within the fusion-by-diffusion formalism into our Kewpie2 code and the approach towards constraining this factor.
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