Investigation of decay modes and stability effects on Spectral Statistics of different nuclei

In this paper, the spectral statistics of 482 stable and radioactive nuclei in the 10≤A≤250 mass region are considered with emphasis on nearest neighbor spacing statistics. The sequences are constructed by using all the available empirical data for considered nuclei in different categories and analyzed via Maximum Likelihood estimation technique in the framework of Abul-Magd distribution. The results offer more regular dynamics for stable nuclei in comparison with unstable nuclei and there are suggestions of the effects due to the radioactivity types, mass, quadrupole deformation and also on the more chaotic dynamics of unstable nuclei.