Investigation on the 48Ca+249-252Cf reactions synthesizing isotopes of the superheavy element 118

TL;DR

This paper investigates the fusion reactions of calcium-48 with californium isotopes to synthesize superheavy element 118, analyzing dynamical effects, neutron composition influence, and comparing theoretical predictions with experimental data.

Contribution

It provides new insights into how neutron number and entrance channel dynamics affect superheavy element synthesis, with detailed cross section analysis and comparison to experimental results.

Findings

Neutron composition influences capture and fusion cross sections.

Dynamical effects significantly impact superheavy element formation.

Theoretical results align with experimental evaporation residue yields.

Abstract

The study of the $^{48}$Ca+$^{249,250,251,252}$Cf reactions in a wide energy interval around the external barrier has been achieved with the aim of investigating the dynamical effects of the entrance channel via the $^{48}$Ca induced reactions on the $^{249-252}$Cf targets and to analyze the influence of odd and even neutron composition in target on the capture, quasifission and fusion cross sections. Moreover, we also present the results of the individual evaporation residue excitation functions obtained from the de-excitation cascade of the various even-odd and even-even $^{297-300}$118 superheavy compound nuclei reached in the studied reactions, and we compare our results of the $^{294}$118 evaporation residue yields obtained in the synthesis process of the $^{48}$Ca+$^{249,250}$Cf reactions with the experimental data obtained in the $^{48}$Ca+$^{249}$Cf experiment carried out at the Flerov Laboratory of Nuclear Reactions of Dubna.