Abstract
A classification of the even-even nuclei withZ≥20,A-Z≳-20, in terms of the boson representation of thesp(4,R) algebra is proposed. All even-even nuclei whose valence nucleons occupy the same major nuclear shell are united in two symplectic multiplets and thus treated in a unified way. A qualitative analysis of the spectrum of the 2+ energy levels of the ground (quasiground) bands is carried out. This analysis shows the expediency of the classification scheme proposed—a periodic structure of the same type is observed in the different shells. This periodic structure is especially stable in the case of the heavy and superheavy nuclei.
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Georgieva, A., Ivanov, M., Raychev, P. et al. Classification of the even-even nuclei in symplectic multiplets. Int J Theor Phys 28, 769–786 (1989). https://doi.org/10.1007/BF00669821
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DOI: https://doi.org/10.1007/BF00669821