NSR Query Results
Output year order : Descending NSR database version of April 29, 2024. Search: Author = V.Prassa Found 9 matches. 2022PR10 Eur.Phys.J. A 58, 183 (2022) Octupole shape phase transitions and critical points in neutron rich actinides NUCLEAR STRUCTURE 282,284,286,288,290,292,294,296Cm, 284,286,288,290,292,294,296,298Cf, 286,288,290,292,294,296,298,300Fm, 288,290,292,294,296,298,300,302No; calculated microscopic DD-PC1 self-consistent relativistic Hartree-Bogoliubov axially symmetric energy surfaces, isotopic dependence of the excitation energies of levels of the positive- and negative parity ground-state bands, energy ratios of the yrast states, probability density distributions for the ground states, B(Eλ) within the microscopic framework of nuclear DFT.
doi: 10.1140/epja/s10050-022-00835-2
2021PR10 Int.J.Mod.Phys. E30, 2150054 (2021) Shape evolution of Hg isotopes within the covariant density functional theory NUCLEAR STRUCTURE 190,192,194,196,198,200Hg; calculated triaxial quadrupole energy surfaces, energy levels, J, π, B(E2) using a five-dimensional collective Hamiltonian (5DCH) model, with parameters determined by constrained self-consistent mean-field calculations based on the relativistic energy density functional DD-PC1, and a finite-range pairing interaction; deduced shape coexisting configurations.
doi: 10.1142/S0218301321500543
2020KA49 Phys.Rev. C 102, 034311 (2020) K.E.Karakatsanis, G.A.Lalazissis, V.Prassa, P.Ring Two-quasiparticle K isomers within the covariant density functional theory NUCLEAR STRUCTURE 170,172,174,176,178,180,182,184,186Hf, 172,174Er, 174,176Yb, 176,178Hf, 178,180W, 180,182Os, 184Pt, 186Hg, 188,208Pb; calculated Nilsson diagram for neutrons and protons close to the Fermi surface for 176Hf, single-particle energies of neutron and proton states in 208Pb and 176Hf, change in the energies of the 6+ and 8- isomers as function of pairing strength, quasineutron and quasiproton level energies, 6+ 2qp energies in A=170-180 even-even Hf isotopes, and in A=172-180, N=104 even-even isotones, energies of quasineutron levels for Z=172-180, N=104 isotones, energies of quasiproton levels and those of 8- 2qp states in A=170-186 even-A Hf isotopes, energies of 8- 2qp states in A=174-188, N=106 even-A isotones. Self-consistent mean-field approach within the relativistic Hartree-Bogoliubov framework, based on relativistic energy density functionals DD-ME2, DD-PC1, and DD-PC1 currents. Comparison with experimental data for 6+ and 8- low-energy high-K isomers in Z=68-82, N=98-112 even-A nuclei.
doi: 10.1103/PhysRevC.102.034311
2015PR04 Phys.Rev. C 91, 034324 (2015) V.Prassa, B.-N.Lu, T.Niksic, D.Ackermann, D.Vretenar High-K isomers in transactinide nuclei close to N=162 NUCLEAR STRUCTURE 264,266,268,270Rf, 266,268,270,272Sg, 268,270,272,274Hs, 270,272,274,276Ds; calculated lowest two-quasiparticle states, and lowest calculated two-quasiparticle K isomers, self-consistent RHB triaxial energy contours in (β, γ) plane for even-even Hs isotopes shape evolutions. Relevance to occurrence of deformed shell gaps in very heavy nuclei. Self-consistent mean-field framework based on relativistic energy density functionals.
doi: 10.1103/PhysRevC.91.034324
2013PR08 Phys.Rev. C 88, 044324 (2013) V.Prassa, T.Niksic, D.Vretenar Structure of transactinide nuclei with relativistic energy density functionals NUCLEAR STRUCTURE 254,256,258,260,262,264,266,268,270,272Fm, 256,258,260,262,264,266,268,270,272,274No, 258,260,262,264,266,268,270,272,274,276Rf, 260,262,264,266,268,270,272,274,276,278Sg, 262,264,266,268,270,272,274,276,278,280Hs, 264,266,268,270,272,274,276,278,280,282Ds, 266,268,270,272,274,276,278,280,282,284Cn, 268,270,272,274,276,278,280,282,284,286Fl; calculated S(2n), Q(α), neutron pairing gap for N=162, Z=100-112, proton pairing gap for Z=108, N=158-170, first excited 0+ states, E(first 4+)/E(first 2+) ratios, B(E2), B(E2) ratios, odd-even staggering in γ bands, RHB triaxial energy surface contours in (β, γ) plane. 256Rf; calculated levels, J, π, ground, β and γ bands. Possible X(5) shape-phase transition in sequence of No nuclides. Axially symmetric and triaxial relativistic Hartree-Bogoliubov (RHB) calculations, based on relativistic energy density functionals DD-PC1. Comparison with available experimental data.
doi: 10.1103/PhysRevC.88.044324
2012PR09 Phys.Rev. C 86, 024317 (2012) V.Prassa, T.Niksic, G.A.Lalazissis, D.Vretenar Relativistic energy density functional description of shape transitions in superheavy nuclei NUCLEAR STRUCTURE 226,228,230,232,234,236Th, 228,230,232,234,236,238,240,242U, 232,234,236,238,240,242,244,246Pu, 238,240,242,244,246,248,250Cm, 242,244,246,248,250,252,254,256Cf, 242,244,246,248,250,252,254,256Fm, 250,252,254,256,258,260,262No; calculated binding energies, ground-state axial quadrupole moments. 236,238U, 240Pu, 242Cm; calculated constrained energy curves as a function of quadrupole deformation parameter. 298,300120, 294,296Og, 290,292Lv, 286,288Fl, 282,284Cn, 278,280Ds; calculated RHB axially symmetric energy curves, triaxial energy contours in β-γ plane. 284Cn, 292Lv, 300120; calculated proton and neutron density distributions. Microscopic, relativistic energy density functional (REDF)-based, quadrupole collective Hamiltonian model. RADIOACTIVITY 234,236,238,240,242,244Pu, 238,240,242,244,246,248,250,252Cm, 242,244,246,248,250,252,254Cf, 246,248,250,252,254,256Fm, 252,254,256No, 256,258Rf, 260,262Sg, 271,272Bh, 275,276Mt, 278,280Ds, 279,280Rg, 282,284Cn, 283,284Nh, 286,288Fl, 287,288Mc, 290,292Lv, 293,294Ts, 294,296Og, 298,300120(α); calculated Q(α), half-lives. Microscopic, relativistic energy density functional (REDF)-based, quadrupole collective Hamiltonian model. Comparison with experimental data.
doi: 10.1103/PhysRevC.86.024317
2010PR03 Nucl.Phys. A832, 88 (2010) V.Prassa, T.Gaitanos, G.Ferini, M.Di Toro, G.A.Lalazissis, H.H.Wolter Isospin effects on strangeness in heavy-ion collisions
doi: 10.1016/j.nuclphysa.2009.11.009
2008DI19 Int.J.Mod.Phys. E17, 1799 (2008) M.Di Toro, M.Colonna, V.Greco, G.Ferini, C.Rizzo, J.Rizzo, V.Baran, T.Gaitanos, V.Prassa, H.H.Wolter, M.Zielinska-Pfabe Constraining the symmetry energy: A journey in the isospin physics from Coulomb barrier to deconfinement
doi: 10.1142/S0218301308010799
2007PR13 Nucl.Phys. A789, 311 (2007) V.Prassa, G.Ferini, T.Gaitanos, H.H.Wolter, G.A.Lalazissis, M.Di Toro In-medium effects on particle production in heavy ion collisions
doi: 10.1016/j.nuclphysa.2007.02.014
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