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

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.

arXiv comment10 pages, 14 figures, Accepted for publication in Phys. Rev. C

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Cited by in corpus (13)

• Analysis of the fusion mechanism in synthesis superheavy element 119 via ${}^{54}$Cr+${}^{243}$Am reaction
• Main restrictions in the synthesis of new superheavy elements: quasifission or/and fusion-fission
• An experimentalist's view of the uncertainties in understanding heavy element synthesis
• Calculations of the cross sections for synthesis of new {293-296}118 isotopes in {249-252}Cf(48Ca,xn) reactions
• Optimal colliding energy for the synthesis of superheavy element $Z$=119
• Uncertainties and understanding of experimental and theoretical results regarding reactions forming heavy and superheavy nuclei
• The effect of the neutron and proton numbers ratio in colliding nuclei at formation of the evaporation residues in the ${}^{34}$S+${}^{208}$Pb and ${}^{36}$S+${}^{206}$Pb reactions
• A new dynamical mechanism of incomplete fusion in heavy-ion collision
• Effects of entrance channels on the deexcitation properties of the same compound nucleus formed by different pairs of collision partners
• Small cross section of the synthesis of darmstadtium in the ${}^{48}$Ca+${}^{232}$Th reaction
• Role of charged particle emission on the evaporation residue formation in the ${}^{82}$Se+${}^{138}$Ba reaction leading to the ${}^{220}$Th compound nucleus
• Measurements of evaporation residue cross-sections and evaporation residue-gated $\gamma$-ray fold distributions for ${}^{32}$S+${}^{154}$Sm system
• Investigation of the formation of superheavy elements with atomic numbers 116 and 120 through ${}^{50}$Ti-induced reaction