NSR Query Results
Output year order : Descending NSR database version of April 27, 2024. Search: Author = D.Rouvel Found 9 matches. 2023YA15 Phys.Rev. C 107, 054304 (2023) J.Yang, J.Dudek, I.Dedes, A.Baran, D.Curien, A.Gaamouci, A.Gozdz, A.Pedrak, D.Rouvel, H.L.Wang Islands of oblate hyperdeformed and superdeformed superheavy nuclei with D3h point group symmetry in competition with normal-deformed D3h states: "Archipelago" of D3h-symmetry islands NUCLEAR STRUCTURE 302Og, 292124, 318130; calculated contours of projections of the total nuclear energy surfaces on (α22, α20), (α33, α20), ( α33, α22) and (α30, α20) planes, deformation parameters. N=166-206;Z=116-138; calculated single-particle neutron and proton energy levels, shell energies defined as sums of the Strutinsky and pairing correction energies, D3h-symmetric hyperdeformed, superdeformed, and normal-deformed configurations. Found three separate islands of nuclei with D3h symmetry ("archipelago of three islands") differing by their average α20 < 0 deformations. Macroscopic-microscopic method with a realistic phenomenological Woods-Saxon potential.
doi: 10.1103/PhysRevC.107.054304
2022YA11 Phys.Rev. C 105, 034348 (2022) J.Yang, J.Dudek, I.Dedes, A.Baran, D.Curien, A.Gaamouci, A.Gozdz, A.Pedrak, D.Rouvel, H.L.Wang, J.Burkat Exotic shape symmetries around the fourfold octupole magic number N=136: Formulation of experimental identification criteria NUCLEAR STRUCTURE N=122-164; calculated single-particle neutron levelsand Routhians as functions of α30, α31, α32 and α33 octupole deformations; deduced very large neutron shell gaps at N=136 for all the four octupole deformations, and N=136 as a "universal or fourfold octupole magic number". 208,212,216,218Pb, 218,220,222,224Ra, 220Po, 222Rn, 224Ra, 226Th; calculated contours of projections of the total nuclear energy surfaces on (α30, α20) planes for all the isotopes, (α31, α20), (α32, α20), and (α33, α20) planes for 218Pb, (α32, α20) planes for 218,220, 222,224Ra, and (α31, α20) and (α32, α20) planes for 220Po, 222Rn, 224Ra, 226Th. Discussed exotic point-group symmetries C2ν, D2d, Td (tetrahedral symmetry), and D3h in order to formulate spectroscopic criteria for experimental identifications through analysis of collective rotational bands generated by the symmetries. Macroscopic-microscopic method in multidimensional deformation spaces to analyze the expected exotic symmetries and octupole shape instabilities, tetrahedral point group symmetry, and realistic nuclear mean-field theory using phenomenological Woods-Saxon Hamiltonian combined with the Monte Carlo approach. Comparison with available experimental nuclear octupole deformations.
doi: 10.1103/PhysRevC.105.034348
2022YA26 Phys.Rev. C 106, 054314 (2022) J.Yang, J.Dudek, I.Dedes, A.Baran, D.Curien, A.Gaamouci, A.Gozdz, A.Pedrak, D.Rouvel, H.L.Wang Exotic symmetries as stabilizing factors for superheavy nuclei: Symmetry-oriented generalized concept of nuclear magic numbers NUCLEAR STRUCTURE Z=82-138, N=164-258; calculated single-particle proton and neutron energies, spherical orbital energies and shell gaps. 314Og; calculated Monte Carlo simulated probability distributions of single-particle level position uncertainties for protons and neutrons. 308122; calculated proton and neutron single-particle energies as functions of the octupole deformations α30, α31, α32 and α33 in the center of Z=114-130, N=166-206 region. 310Fl, 314Og, 318122, 322126, 326130; calculated potential-energy projection contours as functions of quadrupole deformation parameter α20 and octupole deformation parameters α30, α31, α32 and α33 for 310Fl, and α32 for others. 296,298,300,302,304,306,308,310,312,314,316Sg, 304,306,308,310,312,314,316,318,320,322,324Fl, 310Fl, 314,316,318,320,322,324,326,328,330,332,334124, 312Lv, 314Og, 316120, 318122, 320124, 322126, 324128, 326130, 328132, 330134, 332136; calculated nuclear shell energies as functions of octupole deformation parameters α30, α31, α32 and α33, comparisons of nuclear shell-energies as functions of quadrupole deformation α20, and octupole deformation parameters α30 (pear-shaped), α31, α32, and α33 for Z-114, N=190-210, and for N=196, Z=114-136 nuclei. 296,298,300,302,304,306,308,310,312,314,316Sg, 314,316,318,320,322,324,326,328,330,332,334124; calculated energies at the equilibrium before and after allowing the α32 minimization. 280,282,284,286,288,290,292,294,296,298,300,302,304,306,308,310,312,314,316,318,320Fl, 282,284,286,288,290,292,294,296,298,300,302,304,306,308,310,312,314,316,318,320,322Lv, 284,286,288,290,292,294,296,298,300,302,304,306,308,310,312,314,316,318,320,322,324Og, 286,288,290,292,294,296,298,300,302,304,306,308,310,312,314,316,318,320,322,324,326120, 288,290,292,294,296,298,300,302,304,306,308,310,312,314,316,318,320,322,324,326,328122, 290,292,294,296,298,300,302,304,306,308,310,312,314,316,318,320,322,324,326,328,330124, 292,294,296,298,300,302,304,306,308,310,312,314,316,318,320,322,324,326,328,330,332126, 294,296,298,300,302,304,306,308,310,312,314,316,318,320,322,324,326,328,330,332,334128, 296,298,300,302,304,306,308,310,312,314,316,318,320,322,324,326,328,330,332,334,336130; predicted quadrupole deformation α2, components of octupole deformation α30, α31, α32 and α33 for the ground states, energy differences between the nearest quadrupole-shape minima and octupole-deformed configurations; deduced spherical or octupole deformed, with dominance of octupole-tetrahedral geometry for a majority of superheavy nuclei, which lowers the ground-state energy by up to 8 MeV. Realistic phenomenological mean-field approach with the deformed Woods-Saxon potential and macroscopic-microscopic method to examine impact of exotic shapes of nuclei associated with the four-fold octupole degrees of freedom on the stabilization of superheavy nuclei in the mass range of Z=114-130, and N=166-206.
doi: 10.1103/PhysRevC.106.054314
2019DU22 Acta Phys.Pol. B50, 685 (2019) J.Dudek, I.Dedes, J.Yang, A.Baran, D.Curien, T.Dickel, A.Gozdz, D.Rouvel, H.L.Wang High-rank Symmetries in Nuclei: Challenges for Prediction Capacities of the Nuclear Mean-field Theories NUCLEAR STRUCTURE 226Th; calculated total nuclear energy surfaces. Discussed the possible structure of rotational bands in cases of tetrahedral and octahedral nuclear symmetries. Mean-field approach with the phenomenological “universal” Woods–Saxon Hamiltonian.
doi: 10.5506/aphyspolb.50.685
2019RO08 Phys.Rev. C 99, 041303 (2019) New approach to the adiabaticity concepts in the collective nuclear motion: Impact for the collective-inertia tensor and comparisons with experiment NUCLEAR STRUCTURE 208Pb; calculated level energies, B(E2), B(E3) for the first 3- and 2+, and second 0+ states using new method for calculating the nuclear collective inertia tensor within the adiabatic cranking model. Comparison with experimental values, and with predictions from traditional way of mass tensor calculations.
doi: 10.1103/PhysRevC.99.041303
2015MA14 Phys.Rev. C 91, 034301 (2015) K.Mazurek, J.Dudek, A.Maj, D.Rouvel Nuclear Jacobi and Poincare transitions at high spins and temperatures: Account of dynamic effects and large-amplitude motion NUCLEAR STRUCTURE 46Ti, 64,70,76,94Se, 75Br, 88,90,98Mo, 120Cd, 128,142Ba, 147Eu, 173Lu, 202,228Ra; calculated nuclear Jacobi and Poincare shape transitions, fission barriers, potential energy surfaces in (β, γ) plane, static and dynamic equilibrium deformations, rotational properties at high spins, most probable deformations. Lublin-Strasbourg drop model. Comparison with experimental data.
doi: 10.1103/PhysRevC.91.034301
2014DU16 Phys.Scr. 89, 054007 (2014) J.Dudek, D.Curien, D.Rouvel, K.Mazurek, Y.R.Shimizu, S.Tagami The suggested presence of tetrahedral symmetry in the ground-state configuration of the 9640Zr56 nucleus NUCLEAR STRUCTURE 76Ge, 74Se, 76Kr; calculated energy surface with deformations. 90Zr; calculated proton single-particle levels vs axial-symmetry octupole deformation and vs tetrahedral deformation. 96Zr; calculated low-lying levels, J, π, B(E1), B(E2), B(E3); deduced possible gs tetrahedral deformation. Mean field methods with point-group symmetries.
doi: 10.1088/0031-8949/89/5/054007
2011MA11 Acta Phys.Pol. B42, 471 (2011) K.Mazurek, J.Dudek, M.Kmiecik, A.Maj, J.P.Wieleczko, D.Rouvel Poincare Shape Transitions in Hot Rotating Nuclei NUCLEAR STRUCTURE 116,128,142,152Ba; calculated potential energy surfaces, multipole deformations, gigantic back-bending. Lublin-Strasbourg Drop model.
doi: 10.5506/APhysPolB.42.471
2010MA21 Int.J.Mod.Phys. E19, 532 (2010) A.Maj, K.Mazurek, J.Dudek, M.Kmiecik, D.Rouvel Shape evolution at high spins and temperatures: nuclear Jacobi and Poincare transitions NUCLEAR STRUCTURE 46Ti, 142Ba; calculated Jacobi and Poincare shape transitions.
doi: 10.1142/S0218301310014947
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