Structural properties and decay modes of Z=122, 120 and 118 superheavy nuclei

Structural properties and the decay modes of the superheavy elements Z = 122, 120 and 118 are studied in a microscopic framework. We evaluate the binding energy, one-and two- proton and neutron separation energy, shell correction and density profile of even and odd isotopes of Z = 122,120,118 (284 <= A <= 352) which show a reasonable match with FRDM results and the available experimental data. Equilibrium shape and deformation of the superheavy region are predicted. We investigate the possible decay modes of this region specifically alpha-decay, spontaneous fission (SF) and the beta-decay and evaluate the probable a-decay chains. The phenomena of bubble like structure in the charge density is predicted in (330)122, (292)(,)(328)120 and (326)118 with significant depletion fraction around 20-24% which increases with increasing Coulomb energy and diminishes with increasing isospin (N - Z) values exhibiting the fact that the coulomb forces are the main driving force in the central depletion in superheavy systems.