Competition between α Decay and Spontaneous Fission in ~(292-310)122 Isotopes

Based on the framework of the Generalized Liquid Droplet Model(GLDM), alpha decay and spontaneous fission half-lives for 292-310122 isotopes are studied. The calculation of the basic inputs which only need the two fragment mass numbers, charge numbers and the Q value. GLDM can describe alpha decay and spontaneous fission the nuclei. It is found that the alpha decay is the dominant mode of decay for isotopes with mass number A 308, and for those with A 308 spontaneous fission is dominant. The demarcation between alpha decay and spontaneous fission is at 308122,which shows the presence of a spherical neutron shell closure at N = 184.