Evolution of neutron shell closure N=126 using alpha decay

Studying alpha decay properties like half-lives, decay energies, reduced alpha decay width, formation probabilities, and neutron shell gaps is vital to identify the shell structure at [Formula: see text]. These factors reveal stability, energy states, decay likelihood, and shell closures, offering insights into nuclear physics and atomic nucleus stability. The behavior of alpha decay energy values along an isotopic chain increases as neutron number increases, peaking at [Formula: see text] and 129 before sharply declining. The alpha decay half-lives become the minimum near [Formula: see text] and 129. This pattern also suggests the presence of a neutron shell closure at N = 126. Alpha decay widths are lowest at [Formula: see text] and highest at [Formula: see text] and 129, reflecting increased nucleon stability near filled shell configurations. As nuclei approach these configurations, the energy barrier for alpha decay rises, resulting in narrower widths. The study of alpha particle formation probability ([Formula: see text]) near the neutron shell closure at [Formula: see text] (within 10 neutrons) reveals a discernible pattern. Below the closure, [Formula: see text] declines with more neutrons until it reaches a minimum at the closure. Crossing the closure triggers a sudden increase in [Formula: see text]. We have predicted the new isotones near [Formula: see text] that can be detected through experiments. This work will certainly be helpful in synthesizing new isotones near [Formula: see text].