α decay half-lives of new superheavy nuclei within a generalized liquid drop model

The {α} decay half-lives of the recently produced isotopes of the 112, 114, 116 and 118 nuclei and decay products have been calculated in the quasi-molecular shape path using the experimental Q_α value and a Generalized Liquid Drop Model including the proximity effects between nucleons in the neck or the gap between the nascent fragments. Reasonable estimates are obtained for the observed {α} decay half-lives. The results are compared with calculations using the Density-Dependent M3Y effective interaction and the Viola-Seaborg-Sobiczewski formulae. Generalized Liquid Drop Model predictions are provided for the {α} decay half-lives of other superheavy nuclei using the Finite Range Droplet Model Q_α and compared with the values derived from the VSS formulae.