Correlation betweenα-Decay Energies of Superheavy Nuclei Involving the Effects of Symmetry Energy

Abstract

A formula for the relationship between the α-decay energies (Q values) of superheavy nuclei (SHN) is presented, which is composed of the effects of Coulomb energy and symmetry energy. It can be employed not only to validate the experimental observations and measurements to a large extent, but also to predict the Q values of heaviest SHN with a high accuracy generally which will be very useful for future experiments. Furthermore, the shell closures in superheavy region and the effect of the symmetry energy on the stability of SHN against α decay are discussed with the help of this formula.

Alpha-decay and spontaneous fission half-lives of super-heavy nuclei around the doubly magic nucleus270Hs

“…2 present a linear decreasing trend for N=158-162 and N=164-166 and an increasing trend for N=162-164. Such a complicated trend was attributed [19] to the large symmetry energy that lowers the Q α -value at the magic shells ( Fig. 1 and Fig.…”

“…To estimate the unknown Q α -values from the measured ones we employ the method [19], which takes into the account the effects of Coulomb energy and symmetry energy and validates not only the experimental measurements, but also predicts the Q α -values with a high accuracy. Once the parent or daughter nuclei have neutron or proton magic numbers ( Fig.…”

Competition between alpha-decay and spontaneous fission at isotopes of superheavy elements Rf, Db, and Sg

“…Bottom part includes the results of our calculations for decay modes, branching ratios and total half-life for the known and many unknown nuclei. [13].…”

Alpha and spontaneous fission decay properties of nuclei with 104 < Z < 112 and 158 < N < 166

“…We have calculated Q α [19,20,21,22,23,24,25], total half-lives, alpha half-lives, spontaneous fission halflives and branching ratio (alpha and SF) of nuclei with Z=104-112 and N=158-166. The agreement to the results of Refs.…”