36 citations · 89 across the 23 of their papers we have counts for
24 papers
Parameter-free deformation variables of the proxy-SU(3) symmetry in even-even actinide, superheavy and hyperheavy nuclei with Z=82-126, N=82-258
Dennis Bonatsos, V. K. B. Kota, Andriana Martinou +5
Superheavy and hyperheavy nuclei are one of the frontiers of nuclear structure nowadays, while also for many actinides rather limited experimental information exists. Therefore, th…
Mass spectrometry of Zn ground and isomeric states from in-trap decay of Cu
M. Müller, N. A. Althubiti, D. Atanasov +14
We report on high-precision mass measurements of the ground and first isomeric state of Zn, performed using the time-of-flight ion-cyclotron-resonance technique at the ISOLT…
Mass measurements of Yb identify an anomalous proton-neutron interaction
C. L. Brown, J. Ash, B. Ashrafkhani +30
Mass measurements of nuclei can identify structurally-driven trends in binding energy across isotopic chains, and can also isolate specific nucleon-nucleon interactions, such as th…
Octupole deformation in quasiparticle states of odd-mass and odd-odd nuclei
N. Kontowicz, L. Bonneau, J. Bartel +3
As a follow up of [Phys. Scr. 99 055305 (2024)], where we studied axial octupole shapes in two-quasiparticle states of even-even nuclei, we investigate this type of shapes in odd-m…
Triaxial shapes in even-even nuclei: A theoretical overview
Dennis Bonatsos, Andriana Martinou, S. K. Peroulis +4
Triaxial shapes in even-even nuclei have been considered since the early days of the nuclear collective model. Although many theoretical approaches have been used over the years fo…
Robustness of the proxy-SU(3) symmetry in atomic nuclei and the role of the next highest weight irreducible representation
Dennis Bonatsos, Andriana Martinou, S. K. Peroulis +4
The proxy-SU(3) symmetry predicts, in a parameter-free way, the collective deformation variables beta and gamma in even-even atomic nuclei away from closed shells based on the high…
Preponderance of triaxial shapes in atomic nuclei predicted by the proxy-SU(3) symmetry
Dennis Bonatsos, Andriana Martinou, S. K. Peroulis +4
The proxy-SU(3) symmetry predicts, in a parameter-free way, based only on the Pauli principle and the short-range nature of the nucleon-nucleon interaction, non-vanishing values of…
Skyrme-Hartree-Fock-BCS approach to Th and neighboring nuclei
Nikolay Minkov, Adriana Pálffy, Philippe Quentin +1
The microscopic origin of the Th isomer and its possible manifestation also in neighboring nuclei is explored within a selfconsistent Skyrme Hartree-Fock plus Bardeen-Coop…
-isomeric states in the isotopic and isotonic chains of Hf
N. Minkov, L. Bonneau, P. Quentin +3
We study the evolution of and two-quasiparticle (q.p.) configurations in the isotopic and isotonic chains of even-even deformed nuclei around Hf and the…
Prolate-oblate shape transitions and O(6) symmetry in even-even nuclei: A theoretical overview
Dennis Bonatsos, Andriana Martinou, S. K. Peroulis +2
Prolate to oblate shape transitions have been predicted in an analytic way in the framework of the Interacting Boson Model (IBM), determining O(6) as the symmetry at the critical p…
The proxy-SU(3) symmetry in atomic nuclei
Dennis Bonatsos, Andriana Martinou, S. K. Peroulis +2
The microscopic origins and the up-to-now predictions of the proxy-SU(3) symmetry model of atomic nuclei are reviewed. Starting from the experimental evidence for the special role…
Islands of shape coexistence: theoretical predictions and experimental evidence
Andriana Martinou, Dennis Bonatsos, S. K. Peroulis +3
Parameter-free theoretical predictions based on a dual shell mechanism within the proxy-SU(3) symmetry of atomic nuclei, as well as covariant density functional theory calculations…
Connection between Elliott SU(3) and spherical shell model bases
A. Martinou, N. Minkov, S. Sarantopoulou +3
In the Elliott SU(3) symmetry scheme the single particle basis is derived from the isotropic harmonic oscillator Hamiltonian in the Cartesian coordinate system. These states are tr…
Proxy-SU(3) symmetry for heavy deformed nuclei: nuclear spectra
D. Bonatsos, I. E. Assimakis, A. Martinou +3
The systematics of experimental energy differences between the levels of the ground state band and the gamma-1 band in even-even nuclei are studied as a function of the angular mom…
Why do Nilsson quantum numbers remain good at moderate deformations?
D. Bonatsos, I. E. Assimakis, A. Martinou +3
The Nilsson model is a simple microscopic model which has been extensively used over the years for the interpretation of a bulk of experimental results. The single particle orbital…
Nucleon numbers for nuclei with shape coexistence
A. Martinou, D. Bonatsos, N. Minkov +4
We consider two competing sets of nuclear magic numbers, namely the harmonic oscillator (HO) set (2, 8, 20, 40, 70, 112, 168, 240,...) and the set corresponding to the proxy-SU(3)…
Parameter-independent predictions for nuclear shapes and B(E2) transition rates in the proxy-SU(3) model
A. Martinou, S. Peroulis, D. Bonatsos +6
Using a new approximate analytic parameter-free proxy-SU(3) scheme, we make predictions of shape observables for actinides and superheavy elements, namely beta and gamma deformatio…
A new scheme for heavy nuclei: proxy-SU(3)
D. Bonatsos, R. F. Casten, A. Martinou +5
The SU(3) symmetry realized by J. P. Elliott in the sd nuclear shell is destroyed in heavier shells by the strong spin-orbit interaction. However, the SU(3) symmetry has been used…
Parameter free predictions within the proxy-SU(3) model
A. Martinou, D. Bonatsos, I. E. Assimakis +5
Using a new approximate analytic parameter-free proxy-SU(3) scheme, we make predictions of shape observables for deformed nuclei, namely beta and gamma deformation variables, and c…
Foundations of the proxy-SU(3) symmetry in heavy nuclei
I. E. Assimakis, D. Bonatsos, N. Minkov +4
We show that within the proxy-SU(3) scheme the wave functions of the normal parity orbitals in a given nuclear shell are affected very little as a result of the replacement of the…
Proxy-SU(3): A symmetry for heavy nuclei
D. Bonatsos, I. E. Assimakis, N. Minkov +6
The SU(3) symmetry realized by J. P. Elliott in the sd nuclear shell is destroyed in heavier shells by the strong spin-orbit interaction. On the other hand, the SU(3) symmetry has…
Proxy-SU(3) symmetry in heavy nuclei: Prolate dominance and prolate-oblate shape transition
S. Sarantopoulou, D. Bonatsos, I. E. Assimakis +5
Using a new approximate analytic parameter-free proxy-SU(3) scheme, simple predictions for the global feature of prolate dominance and for the locus of the prolate-oblate shape tra…
Parameter-independent predictions for shape variables of heavy deformed nuclei in the proxy-SU(3) model
Dennis Bonatsos, I. E. Assimakis, N. Minkov +5
Using a new approximate analytic parameter-free proxy-SU(3) scheme, we make predictions of shape observables for deformed nuclei, namely beta and gamma deformation variables, and c…
Various aspects of the Deformation Dependent Mass model of nuclear structure
D. Petrellis, Dennis Bonatsos, N. Minkov
Recently, a variant of the Bohr Hamiltonian was proposed where the mass term is allowed to depend on the beta variable of nuclear deformation. Analytic solutions of this modified H…