A Study on the Emission of 1, 2 Proton Halo Nuclei from Parent with Z = 121–128 in the Superheavy Nuclei via Cluster Radioactivity

Abstract

Probabilities for the emission of various one proton and two proton halo nuclei from parent superheavy (SH) isotopes with Z = 121–128 are studied with the Coulomb and proximity potential model (CPPM) as the interacting barrier. The half-lives and other characteristics for the emission of one proton halo nuclei, 8B, 11,12N, 17F, 23Al, 27,28P, and two proton halo nuclei, 9C, 17,18Ne, 20Mg, 29S from the SH parent isotopes are determined and plotted it as a function of neutron number of daughter nuclei. The shell closure effects of parent and daughter nuclei are evident from the plot of computed half-lives. The peaks in the plot of half-life show the shell closure of parent and dips in the half-life show the shell closure of daughter nuclei. In the SH region with Z = 121–128 and N = 147–194, we observed that neutron shell closure of parent occurs at N~184 and neutron shell closure of daughter nuclei at N~174–184. Moreover, the most probable proton halo nuclei emissions are also evident from the computed half-life values. We have also studied the Geiger-Nuttall plots of log10 (T1/2) vs. Q−1/2 and log10 (T1/2) vs. −ln(P) for all the selected proton halo nuclei emitting from the SH parent isotopes with Z = 121–128 and are found to be linear. From the linearity of these plots, we found that GN law is valid for the proton halo decay also.