Prediction for the α-decay chains of 307-318126 isotopes

We systematically evaluated the α-decay and spontaneous fission (SF) for
^308-318
216 isotopes. The α-decay half-lives were calculated by the Parkhomenko formula, The Brown formula and Universal Decay Law (UDL) formula. The results of the three formulas are basically the same. The SF half-lives of those nuclei were obtained by the Xu formula, which is reasonable for describing the SF half-lives of the superheavy nuclei. The competition of the α-decay and the SF half-lives can help us to understand the dominate decay modes of the isotope. The decay modes of unknown nuclei
^308-318
216 are predicted.