Abstract.
The evolution of shape from the spherical to the axially deformed shapes in the Sm isotopes is investigated microscopically in relativistic mean-field theory. The microscopic and self-consistent quadrupole deformation constrained relativistic mean-field calculations show a clear shape change for the even-even Sm isotopes with N = 82-96. The potential surfaces for 148Sm, 150Sm and 152Sm are found to be relatively flat, which may be the possible critical-point nuclei. By examining the single-particle spectra and nearest-neighbor spacing distribution of the single-particle levels, one finds that the single-particle levels in 148Sm , 150Sm, and 152Sm distribute more uniformly.
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G. Orlandini
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Meng, J., Zhang, W., Zhou, S.G. et al. Shape evolution for Sm isotopes in relativistic mean-field theory. Eur. Phys. J. A 25, 23–27 (2005). https://doi.org/10.1140/epja/i2005-10066-6
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DOI: https://doi.org/10.1140/epja/i2005-10066-6