Calculated masses of heaviest nuclei

Experimental studies of the249Bk + 48Ca reaction including decay properties and excitation function for isotopes of element 117, and discovery of the new isotopeOganessian1, Abdullin2, Alexander3 et al. 2013Phys. Rev. C1377480View full textAdd to dashboardCite

“…Here we also show a much longer T SF value for 277 Hs observed in [31] and presumably assigned to the decay from a high-spin isomer. [10,33]). Thus, the close half-lives that were observed for 277 Mt (N =168) and 277 Hs (N =169) could indicate comparable hindrance factors for these odd-even and even-odd isotopes.…”

Eleven new heaviest isotopes of elementsZ=105toZ=117identified among the products ofOganessian1, Abdullin2, Bailey3 et al. 2011Phys. Rev. C1255350View full textAdd to dashboardCite

“…6, the experimental Q α results are compared with expectations based on the calculated masses and characteristics of nuclear decay in the macroscopicmicroscopic nuclear model [55,56]. The deviation between theory and experiment is given as the difference in decay energies ∆Q α = Q exp α − Q th α for all nuclei produced as evaporation residues in the 48 Ca-induced reactions and their daughter products as well as those syn- [5] in brown).…”

“…The theoretical predictions [55,56] were corrected by a method suggested in [26], based on the assumption that nuclei with odd numbers of protons or neutrons undergo α decays not from ground-state to ground-state but to an excited level of the daughter nuclei with the average excitation energies determined in [57]. One can see that the model approach based on the shell corrections to the macroscopic potential energy of the nucleus provides a good description of decay energies of the deformed nuclei in the region of neutron shells at N = 152 and N = 162.…”

“…The deviation between theory and experiment is given as the difference in decay energies ∆Q α = Q exp α − Q th α for all nuclei produced as evaporation residues in the 48 Ca-induced reactions and their daughter products as well as those syn- [5] in brown). Theoretical data [55,56] were corrected by a method suggested in [26].…”

α-decay half-lives of the observed superheavy nuclei(Z=108−118)

“…The relativistic mean-field (RMF) theory [1,2] belongs to the former, and the Möller-Nix [3] or the Muntian [4] models are examples from the latter category. The aim of the earlier RMF studies [5] had been to predict the most stable N and Z combination.…”