Shape transitions and collective behaviour of Er and Yb isotopes based on relativistic energy density functional theory


Δημοσιευμένα: Feb 24, 2026
Konstantinos Karakatsanis
Theo J. Mertzimekis
https://orcid.org/0000-0001-9191-7903
Pavlos Koseoglou
https://orcid.org/0000-0003-4520-4448
Περίληψη

In this work a collective Hamiltonian based on relativistic energy density functional calculations has been used to study the basic spectroscopic properties of Er and Yb isotopes with 82 < 𝑁 < 114. Starting from a series of shape constrained calculations, we build a Bohr-type Hamiltonian the diagonalisation of which gives the collective excitations and transition probabilities. We are thus able to follow the transition of shapes, which is established through projected energy surfaces and specific spectroscopic quantities such as energy ratios and the structure of the low lying excited states.

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Αναφορές
P. Ring. “Relativistic mean field theory in finite nuclei”. In: Prog. Part. Nucl. Phys. 37 (1996), pp. 193–263. issn: 0146-6410. doi: 10.1016/0146-6410(96)00054-3
B. D. Serot. “A relativistic nuclear field theory with pi and rho mesons”. In: Phys. Lett. B 86.2 (1979), pp. 146 –150. issn: 0370-2693. doi: 10.1016/0370-2693(79)90804-9
B. D. Serot and J. D. Walecka. “The relativistic nuclear many-body problem”. In: Adv. Nucl. Phys. 16 (1986). Ed. by J. W. Negele and E. Vogt, pp. 1–327
Y. Tian, Z. Y. Ma, and P. Ring. “A finite range pairing force for density functional theory in superfluid nuclei”. In: Phys. Lett. B 676 (2009), p. 44. doi: 10.1016/j.physletb.2009.04.067
Y. Tian, Z. Y. Ma, and P. Ring. “Separable Pairing Force for Relativistic Quasiparticle Random Phase Approximation”. In: Phys. Rev. C 79 (2009), p. 064301. doi: 10.1103/PhysRevC.79.064301
G. A. Lalazissis, T. Nikšić, D. Vretenar, and P. Ring. “New relativistic mean field interaction with density dependent meson couplings”. In: Phys. Rev. C 71 (2005), p. 024312. doi: 10.1103/PhysRevC.71.024312
T. Nikšić, N. Paar, D. Vretenar, and P. Ring. “DIRHB - a relativistic self-consistent mean-field framework for atomic nuclei”. In: Comp. Phys. Comm. 185.6 (2014), pp. 1808 –1821. issn: 0010-4655. doi: 10.1016/j.cpc.2014.02.027
T. Nikšić, Z. P. Li, D. Vretenar, L. Prochniak, J. Meng, and P. Ring. “Beyond the relativistic mean-field approximation. III. Collective Hamiltonian in five dimensions”. In: Phys. Rev. C 79 (3 2009), p. 034303. doi: 10.1103/PhysRevC.79.034303
P. Ring and P. Schuck. The Nuclear Many-Body Problem. Berlin: Springer-Verlag, 1980
National Nuclear Data Center. Evaluated Nuclear Structure Data File (ENSDF). https://www.nndc.bnl.gov/ensdf/. Accessed: April 15,