NSR Query Results
Output year order : Descending NSR database version of April 27, 2024. Search: Author = A.A.Raduta Found 132 matches. Showing 1 to 100. [Next]2024RA13 J.Phys.(London) G51, 045107 (2024) A.A.Raduta, C.M.Raduta, A.H.Raduta Toward a new approach for the pygmy dipole resonance in even–even nuclei. Application to isotopes 144, 148, 150, 152, 154Sm NUCLEAR STRUCTURE 144,148,150,152,154Sm; calculated wavefunctions, B(E1), the photoabsorption σ, integrated moments of the cross section and energy weighted sum rule (EWSR) using a many-body Hamiltonian consisting of a spherical shell model mean-field term, a pairing interaction for alike nucleons and a dipole–dipole interaction, with the dipole operator involving a cubic term in the radial coordinate.
doi: 10.1088/1361-6471/ad27e4
2022RA01 J.Phys.(London) G49, 25105 (2022) C.M.Raduta, A.A.Raduta, R.Poenaru, A.H.Raduta Simultaneous description of wobbling and chiral properties in even-odd triaxial nuclei
doi: 10.1088/1361-6471/ac3c34
2022RA24 Phys.Rev. C 106, 044301 (2022) A.A.Raduta, C.M.Raduta, R.Poenaru Double-β transition 0+ → 2+ within a fully renormalized proton-neutron quasiparticle random-phase approximation with the gauge symmetry restored RADIOACTIVITY 76Ge, 82Se, 96Zr, 100Mo, 116Cd, 128Te, 130Te, 150Nd(2β-); calculated GT amplitudes, T1/2 for ground to 2+ and ground to ground transition. 76As, 82Br, 96Nb, 100Tc, 116In, 128,130I, 150Pm(β-), (β+)(EC); calculated logft. Calculation for the two consecutive virtual β transitions in the intermediate nuclei for the ββ-decay. 76Ge, 82Se, 96Zr, 100Mo, 116Cd, 128Te, 130Te, 150Nd(β-), (β+); calculated Gamow-Teller amplitude, B(GT). Calculations using fully renormalized proton-neutron quasiparticle random-phase approximation (pnQRPA)for the Gamow-Teller (GT) dipole transition operator and a renormalized QRPA for charge conserving quadrupole operators. Comparison to experimental data. NUCLEAR STRUCTURE 76Se, 82Kr, 96Mo, 100Ru, 116Sn, 128Xe, 130Xe, 150Sm; calculated deformation parameters, B(E2) and T1/2 of the 2+ state. Comparison to experimental data.
doi: 10.1103/PhysRevC.106.044301
2021PO07 Int.J.Mod.Phys. E30, 2150033 (2021) Parity partner bands in 163Lu: A novel approach for describing the negative parity states from a triaxial super-deformed band NUCLEAR STRUCTURE 163Lu; calculated band excitation energies, nuclear trajectory of the system for a spin state belonging to each of the four triaxial super-deformed bands using a triaxial rotor model within a semi-classical picture.
doi: 10.1142/S0218301321500336
2021PO08 Rom.J.Phys. 66, 308 (2021) Extensive Study of the Positive and Negative Parity Wobbling States for an Odd-Mass Triaxial Nucleus I: Energy Spectrum NUCLEAR STRUCTURE 163Lu; calculated energy levels, J, π, wobbling bands, rotational frequencies, Routhian; Quantal Hamiltonian specific to a Particle Rotor Model, Time-Dependent Variational Principle (TDVE). Comparison with available data.
2021PO15 Rom.J.Phys. 66, 309 (2021) Extensive Study of the Positive and Negative Parity Wobbling States for an Odd-Mass Triaxial Nucleus II: Classical Trajectories NUCLEAR STRUCTURE 163Lu; analyzed available data; calculated wobbling properties, classical energy function, nuclear trajectories of the system. The Particle-Rotor Hamiltonian.
2021RA01 J.Phys.(London) G48, 015106 (2021) A.A.Raduta, C.M.Raduta, R.Poenaru A new boson approach for the wobbling motion in even-odd nuclei NUCLEAR STRUCTURE 135Pr; calculated level energies, J, π, wobbling frequencies, B(Eλ) using classical analysis.
doi: 10.1088/1361-6471/abc533
2020RA01 Phys.Rev. C 101, 014302 (2020) A.A.Raduta, R.Poenaru, C.M.Raduta New approach for the wobbling motion in the even-odd isotopes 161, 163, 165, 167Lu NUCLEAR STRUCTURE 161,163,165,167Lu; calculated levels, J, π, aligned angular momenta, wobbling energies, moments of inertia, quadrupole moment parameters, B(E2), B(M1), transition quadrupole moments, multiple mixing ratios of triaxial strongly-deformed bands (TSDBs)using the particle-triaxial rotor semiclassical formalism. Discussed wobbling motion, regions of allowed and forbidden transversal wobbling motion. Comparison with experimental data.
doi: 10.1103/PhysRevC.101.014302
2020RA30 J.Phys.(London) G47, 025101 (2020) A.A.Raduta, R.Poenaru, C.M.Raduta Towards a new semi-classical interpretation of the wobbling motion in 163Lu NUCLEAR STRUCTURE 163Lu; calculated energies for the bands, wobbling energies, B(E2) within a particle-triaxial rotor semi-classical formalism. Comparison with available data.
doi: 10.1088/1361-6471/ab5ae4
2018RA21 J.Phys.(London) G45, 105104 (2018) A.A.Raduta, R.Poenaru, A.H.Raduta Wobbling motion in 165, 167Lu within a semi-classical framework NUCLEAR STRUCTURE 165,167Lu; calculated excitation energies for the super-deformed bands, inter- and intra-band B(E2) and B(M1), the mixing ratios, transition quadrupole moments. Comparison either with the corresponding experimental data.
doi: 10.1088/1361-6471/aadc58
2017RA04 J.Phys.(London) G44, 045102 (2017) A.A.Raduta, C.M.Raduta, A.H.Raduta Alternative description of chiral properties in 138Nd NUCLEAR STRUCTURE 138Nd; calculated average value of the proton angular momentum, angle between the angular momenta carried by protons and neutrons in a state from the ground band, chiral band energies, J, π, B(M1), B(E2). Comparison with available data.
doi: 10.1088/1361-6471/aa5af1
2017RA24 Phys.Rev. C 96, 054320 (2017) A.A.Raduta, R.Poenaru, L.Gr.Ixaru Semiclassical unified description of wobbling motion in even-even and even-odd nuclei NUCLEAR STRUCTURE 158Er, 163Lu; calculated yrast levels, J, π, triaxial strongly-deformed (TSD) bands, B(E2), B(M1), wobbling frequencies, electric quadrupole and magnetic dipole moments, multipolarity mixing ratios for 163Lu. Derived compact formulas for wobbling frequencies. Semiclassical formalism to describe the wobbling motion in even-even and even-odd nuclei, using a time-dependent variational principle. Comparison with available experimental results.
doi: 10.1103/PhysRevC.96.054320
2016RA10 Int.J.Mod.Phys. E25, 1650017 (2016) A new renormalization procedure of the quasiparticle random phase approximation
doi: 10.1142/S0218301316500178
2016RA24 J.Phys.(London) G43, 095107 (2016) A.A.Raduta, Al.H.Raduta, C.M.Petrache New type of chiral motion in even-even nuclei: the 138Nd case NUCLEAR STRUCTURE 138Nd; calculated energy levels, J, π, β- and γ-bands, energy staggering function, B(M1), B(E2); deduced chiral properties. Comparison with available data.
doi: 10.1088/0954-3899/43/9/095107
2015BU05 Rom.J.Phys. 60, 161 (2015) Energy Spectra, E2 Transition Probabilities and Shape Deformations for the Even-Even Isotopes 180-196Pt NUCLEAR STRUCTURE 180,182,184,186,188,190,192,194,196Pt; calculated energy levels, J, π, bands, B(E2), contour plots of density probability. Davidson and spheroidal (DSA), Davidson and Mathieu approaches (DMA), comparison with available data.
2015RA07 J.Phys.(London) G42, 065105 (2015) Semi-phenomenological description of the chiral bands in 188, 190Os NUCLEAR STRUCTURE 188,190Os; calculated energy levels, J, π, nuclear magnetic moments, B(M1). Comparison with available data.
doi: 10.1088/0954-3899/42/6/065105
2013BU01 J.Phys.(London) G40, 025109 (2013) Semi-microscopic description of the double backbending in some deformed even-even rare earth nuclei NUCLEAR STRUCTURE 156,158Er, 160Yb, 162Hf; calculated neutron and proton Fermi energy levels, gap parameters, and quasiparticle energies, single-particle energy levels, J, π, deformation parameters, backbending. Semi-microscopic model, comparison with available data.
doi: 10.1088/0954-3899/40/2/025109
2013RA02 J.Phys.(London) G40, 025108 (2013) Application of the sextic oscillator with a centrifugal barrier and the spheroidal equation for some X(5) candidate nuclei NUCLEAR STRUCTURE 176,178,180,188,190Os, 150Nd, 156Dy, 166,168Hf, 170W; calculated transition energies and probabilities, B(E2). Sextic and spheroidal approach formalism, comparison with available data.
doi: 10.1088/0954-3899/40/2/025108
2013RA33 Phys.Rev. C 88, 064328 (2013) Description of the isotope chain 180-196Pt within several solvable approaches NUCLEAR STRUCTURE 180,182,184,186,188,190,192,194,196Pt; calculated levels, J, π of ground, β and γ bands, B(E2), γ branching ratios, probability density contours in (β, γ) plane; deduced evidence of shape evolution and possible shape coexistence. Solutions of differential equations approximating generalized Bohr-Mottelson Hamiltonian. Sextic and spheroidal (SSA), sextic and Mathieu (SMA), the infinite square well and spheroidal (ISWSA), and infinite square well and Mathieu (ISWMA) approaches. Comparison with X(5) and Z(5) models, and with experimental data.
doi: 10.1103/PhysRevC.88.064328
2012BU01 J.Phys.(London) G39, 025103 (2012) P.Buganu, A.A.Raduta, A.Faessler New features of the triaxial nuclei described with a coherent state model NUCLEAR STRUCTURE 180Hf, 182W; calculated level energies, J, π, B(E2) values. SMA and CSM formalisms, comparison with experimental data.
doi: 10.1088/0954-3899/39/2/025103
2012RA07 Rom.J.Phys. 57, 442 (2012) FRpnQRPA Approach with the Gauge Symmetry Restored. Application for the 2νββ Decay RADIOACTIVITY 48Ca, 76Ge, 82Se, 96Zr, 100Mo, 104Ru, 110Pd, 116Cd, 128,130Te, 148,150Nd, 154Sm, 160Gd(2β-); calculated B(GT), T1/2. GRFRpnQRPA formalism.
2012RA13 Phys.Rev. C 85, 054314 (2012) A.A.Raduta, M.I.Krivoruchenko, A.Faessler Exact results for the particle-number-projected BCS approach with isovector proton-neutron pairing
doi: 10.1103/PhysRevC.85.054314
2012RA31 Phys.Rev. C 86, 054307 (2012) Interplay of classical and quantal features within the coherent-state model
doi: 10.1103/PhysRevC.86.054307
2011RA05 Phys.Rev. C 83, 034313 (2011) Toward a new description of triaxial nuclei NUCLEAR STRUCTURE 188,190,192Os, 228,230Th; calculated levels, J, π, B(E2), level staggering in ground, β and γ bands using liquid drop Hamiltonian. Transition from γ unstable to triaxial shape. Signature for triaxiality. Sextic and Mathieu approach (SMA), and Coherent state model (CSM). Comparison with experimental data.
doi: 10.1103/PhysRevC.83.034313
2011RA07 J.Phys.(London) G38, 055102 (2011) Description of the 2ννββ decay within a gauge restored of a fully renormalized pnQRPA approach RADIOACTIVITY 100Mo, 116Cd(2β-); calculated number of single proton states, Gamow-Teller amplitude and strengths. pnQRPA approach, comparison with experimental data.
doi: 10.1088/0954-3899/38/5/055102
2011RA26 Rom.J.Phys. 56, 894 (2011) C.M.Raduta, A.A.Raduta, I.I.Ursu New Results for 2ννββ Decay within a Fully Renormalized pnQRPA with Gauge Restored Symmetry RADIOACTIVITY 148,150Nd, 154Sm, 160Gd(2β-); calculated Gamow-Teller amplitudes, T1/2, log ft. Gauge restored fully renormalized proton-neutron quasiparticle random phase approximation (GRFRpnQRPA) approach.
2011RA35 Phys.Rev. C 84, 044323 (2011), Erratum Phys.Rev. C 87, 029901 (2013) Semimicroscopic description of backbending phenomena in some deformed even-even nuclei NUCLEAR STRUCTURE 160Er; calculated neutron energies, 156Dy, 160Yb, 158,160Er, 164,166Hf; calculated pairing strength, quadrupole-quadrupole interactions, spin-spin interactions, Fermi level energies, gap parameters, quasiparticle energies, backbending plots, g factor. Semiphenomenological investigation based on hybridization of two rotational bands, model Hamiltonian of subsystems. Comparison with experimental data.
doi: 10.1103/PhysRevC.84.044323
2011RA41 Phys.Rev. C 84, 064322 (2011) C.M.Raduta, A.A.Raduta, I.I.Ursu New theoretical results for 2νββ decay within a fully renormalized proton-neutron random-phase approximation approach with the gauge symmetry restored RADIOACTIVITY 48Ca, 76Ge, 82Se, 96Zr, 104Ru, 110Pd, 128,130Te, 148,150Nd, 154Sm, 160Gd(2β-); calculated proton-neutron dipole interaction, proton-neutron dipole pairing, single beta transition strengths, double beta decay rates, half-life. 48Sc, 76As, 82Br, 96Nb, 104Rh, 110Ag, 128,130I, 148,150Pm, 154Eu, 160Tb(β-), (EC), (β+); calculated log ft values for intermediate odd-odd nuclei. Fully renormalized pnQRPA, gauge projection, Ikeda sum rule, spurious states, ground-state instability. Comparison with experimental data.
doi: 10.1103/PhysRevC.84.064322
2010RA10 J.Phys.(London) G37, 085108 (2010) A.A.Raduta, R.Budaca, A.Faessler Closed formulas for ground band energies of nuclei with various symmetries NUCLEAR STRUCTURE 104Ru, 102Pd, 108Te, 150,154,156Nd, 150,152,156,158Sm, 152,154,160,162Gd, 154,156,162,164Dy, 166Er, 172,174Yb, 176Hf, 170,182,186W, 174,178,180,186Os, 176,178,180Pt, 228,232Th, 232,234,236,238U, 236,238,240,242Pu, 248Cm; calculated level energies, J, π; deduced generalized Holmberg-Lipas formula. A time-dependent variational principal.
doi: 10.1088/0954-3899/37/8/085108
2010RA19 Rom.J.Phys. 55, 1050 (2010) A.A.Raduta, P.Buganu, D.Bucurescu, I.I.Ursu A Phenomenological Interpretation of 4+ and 6+ State Multiplets in Even-Even Nuclei NUCLEAR STRUCTURE 152,154Gd, 168Er, 180,184W, 190Os; calculated semiclassical level energies. Comparison with experimental data.
2010RA22 Phys.Rev. C 82, 068501 (2010) Description of the 2ννββ decay within a fully renormalized proton-neutron quasiparticle random-phase approximation approach with a restored gauge symmetry RADIOACTIVITY 100Mo(2β-); calculated decay rates and half-lives for 2νββ decay mode through the intermediate nucleus 100Tc. Fully renormalized proton-neutron quasiparticle random-phase approximation. Comparison with experimental data.
doi: 10.1103/PhysRevC.82.068501
2009RA03 Nucl.Phys. A819, 46 (2009) A.A.Raduta, A.C.Gheorghe, P.Buganu, A.Faessler A solvable model which has X(5) as a limiting symmetry and removes some inherent drawbacks NUCLEAR STRUCTURE 150Nd, 154Gd, 192Os calculated levels, J, π, B(E2). Spheroidal function model. Comparison with data.
doi: 10.1016/j.nuclphysa.2009.01.006
2009RA04 J.Phys.(London) G36, 055101 (2009) A.A.Raduta, F.D.Aaron, E.Moya de Guerra, A.Faessler Phenomenological description of the states 0+ and 2+ in some even-even nuclei NUCLEAR STRUCTURE 152,154Gd, 162Dy, 168Er, 176Hf, 180,184W, 190Os; calculated excitation energies for 0+ and 2+states using a sixth order quadrupole hamiltonian.
doi: 10.1088/0954-3899/36/5/055101
2009RA27 Phys.Rev. C 80, 044327 (2009) A.A.Raduta, C.M.Raduta, A.Faessler Coherent state model extension for the description of positive and negative parity bands in even-odd nuclei NUCLEAR STRUCTURE 219,227Ra, 237U, 239Pu; analyzed levels, J, π, bands, and B(E1)/B(E2) ratios using coherent state model (CSM) and particle-core Hamiltonian within a projected spherical particle-core basis. Comparison with experimental data.
doi: 10.1103/PhysRevC.80.044327
2009RA31 Rom.J.Phys. 54, 887 (2009) A.A.Raduta, F.D.Aaron, C.M.Raduta A Possible Interpretation of the Multiplets 0+ and 2+ in 168Er NUCLEAR STRUCTURE 168Er; calculated energy levels, energies, B(E2); deduced γ-spectra. Sixth-order quadrupole boson Hamiltonian.
2008RA29 Rom.J.Phys. 53, 1183 (2008) 2νββ Decay to One Phonon States
2007GH07 Phys.Lett. B 648, 171 (2007) A.C.Gheorghe, A.A.Raduta, A.Faessler Solvable models for the gamma deformation having X(5) as limiting symmetry. Removing some drawbacks of the existing descriptions NUCLEAR STRUCTURE 152Sm; calculated levels, J, π, B(E2). Spheroidal function model, comparison with data.
doi: 10.1016/j.physletb.2007.03.011
2007RA08 Phys.Lett. B 647, 265 (2007) Double beta decay to the first 2+ state within a boson expansion formalism with a projected spherical single particle basis RADIOACTIVITY 48Ca, 76Ge, 96Zr, 100Mo, 110Pd, 116Cd, 128,130Te, 134,136Xe(2β-); calculated Gamow-Teller transition amplitudes, T1/2 for 2β-decay to excited states. Boson expansion formalism, comparison with other models and data.
doi: 10.1016/j.physletb.2007.02.007
2007RA15 J.Phys.(London) G34, 2053 (2007) A Simple description of the states 0+ and 2+ in 168Er NUCLEAR STRUCTURE 168Er; calculated level energies for 0+ and 2+ states using a sixth order quadrupole boson hamiltonian.
doi: 10.1088/0954-3899/34/9/014
2007RA26 Phys.Rev. C 76, 044306 (2007) Unified description of the double β decay to the first quadrupole phonon state in spherical and deformed nuclei RADIOACTIVITY 48Ca, 76Ge, 82Se, 96Zr, 100Mo, 104Ru, 110Pd, 116Cd, 128Te(2β); analyzed half-lives, Gamow-Teller amplitudes, Q(ββ).48Ti, 76Se, 82Kr, 96Mo, 100Ru, 104Pd, 110Cd, 116Sn, 128Xe; analyzed ββ decay rates to first 2+ states.
doi: 10.1103/PhysRevC.76.044306
2007RA32 Phys.Rev. C 76, 064309 (2007) A.A.Raduta, R.Budaca, C.M.Raduta Semiclassical description of a triaxial rigid rotor NUCLEAR STRUCTURE 158Er; calculated excitation energies using triaxial rotor Hamiltonian, compared with experimental data.
doi: 10.1103/PhysRevC.76.064309
2006RA05 Nucl.Phys. A768, 170 (2006) Positive and negative parity dipole bands in 226Ra NUCLEAR STRUCTURE 226Ra; calculated rotational bands moments of inertia, energy levels. Unified description of multiple bands with extended coherent state formalism, comparison with data.
doi: 10.1016/j.nuclphysa.2006.01.014
2006RA11 Nucl.Phys. A722, 20 (2006) A.A.Raduta, F.D.Aaron, I.I.Ursu Semiclassical description of a sixth-order quadrupole boson Hamiltonian NUCLEAR STRUCTURE 232Th; calculated level energies, rotational bands. Semiclassical approach, comparison with data.
doi: 10.1016/j.nuclphysa.2006.03.010
2006RA21 Phys.Rev. C 74, 044312 (2006) A.A.Raduta, Al.H.Raduta, C.M.Raduta Simultaneous description of four positive parity bands and four negative parity bands NUCLEAR STRUCTURE 158Gd, 172Yb, 228,232Th, 226Ra, 238U, 238Pu; calculated rotational bands energies, moments of inertia, configurations. Comparison with data.
doi: 10.1103/PhysRevC.74.044312
2005RA03 Phys.Rev. C 71, 024307 (2005) A.A.Raduta, C.M.Raduta, A.Escuderos Description of the two neutrino double β decay in deformed nuclei with projected spherical single particle basis RADIOACTIVITY 48Ca, 96Zr, 100Mo, 104Ru, 110Pd, 116Cd, 128,130Te, 134,136Xe(2β); calculated 2νββ-decay T1/2, Gamow-Teller amplitudes, strength distributions. Proton-neutron quasiparticle RPA, angular-momentum-projected single-particle basis.
doi: 10.1103/PhysRevC.71.024307
2005RA11 J.Phys.(London) G31, 337 (2005) A.A.Raduta, A.C.Gheorghe, A.Faessler Remarks on the shape transition from spherical to deformed gamma unstable nuclei NUCLEAR STRUCTURE 104Ru, 134Ba; calculated levels, J, π, B(E2), symmetry and shape transition features. Hybrid model, comparison with data.
doi: 10.1088/0954-3899/31/5/005
2005RA15 Nucl.Phys. A756, 153 (2005) New results for the fully renormalized proton-neutron quasiparticle random phase approximation
doi: 10.1016/j.nuclphysa.2005.03.013
2005RA19 J.Phys.(London) G31, 873 (2005) A coherent state description of the shape phase transition in even-even Gd isotopes NUCLEAR STRUCTURE 150,152,154,156,158,160Gd; calculated rotational bands levels, J, π, B(E2), symmetry features. Three versions of coherent state model compared.
doi: 10.1088/0954-3899/31/8/018
2005ZA04 Phys.Rev. C 71, 034317 (2005) L.Zamick, A.Escuderos, S.J.Lee, A.Z.Mekjian, E.Moya de Guerra, A.A.Raduta, P.Sarriguren Expressions for the number of J=0 pairs in even-even Ti isotopes NUCLEAR STRUCTURE 44,46,48Ti; calculated number of nucleon pairs vs angular momentum, effect of nucleon-nucleon interaction.
doi: 10.1103/PhysRevC.71.034317
2004RA13 Phys.Rev. C 69, 064321 (2004) A.A.Raduta, A.Escuderos, A.Faessler, E.Moya de Guerra, P.Sarriguren Two neutrino double-β decay in deformed nuclei with an angular momentum projected basis RADIOACTIVITY 76Ge, 82Se, 148,150Nd, 154Sm, 160Gd, 232Th, 238U(2β-); calculated 2ν-accompanied 2β-decay Gamow-Teller amplitudes, strength distributions, T1/2. Proton-neutron quasiparticle RPA.
doi: 10.1103/PhysRevC.69.064321
2003AR26 Nucl.Phys. A728, 96 (2003) S.Aroua, L.Zamick, Y.Y.Sharon, E.Moya de Guerra, M.S.Fayache, P.Sarriguren, A.A.Raduta Non-scissors-mode behaviour of isovector magnetic dipole orbital transitions involving isospin transfer NUCLEAR STRUCTURE 8,10Be, 20,22Ne; calculated summed isovector orbital B(M1); deduced non-scissors mode behavior.
doi: 10.1016/j.nuclphysa.2003.08.023
2003MO30 Nucl.Phys. A727, 3 (2003) E.Moya de Guerra, A.A.Raduta, L.Zamick, P.Sarriguren Charge exchange operators sum rules and proton-neutron T = 0 and T = 1 pairing interactions NUCLEAR STRUCTURE 44Ti; calculated Gamow-Teller strength distribution, role of pairing correlations.
doi: 10.1016/j.nuclphysa.2003.07.009
2003RA01 Phys.Rev. C 67, 014301 (2003) A.A.Raduta, L.Pacearescu, V.Baran New features of collective motion of intrinsic degrees of freedom: Toward a possible way to classify the intrinsic states NUCLEAR STRUCTURE 152,156Gd, 194Pt, 188Os; calculated levels, J, π, rotational bands, intrinsic states features.
doi: 10.1103/PhysRevC.67.014301
2003RA17 Phys.Rev. C 67, 044312 (2003) New signatures for octupole deformation in some actinide nuclei NUCLEAR STRUCTURE 218Ra, 228,232Th, 238Pu, 232,234,236,238U; calculated rotational and vibrational bands transition energies, moments of inertia, octupole deformation effects. Extended coherent state model.
doi: 10.1103/PhysRevC.67.044312
2003RA21 Nucl.Phys. A720, 43 (2003) A.A.Raduta, D.Ionescu, I.I.Ursu, A.Faessler New features of positive and negative parity rotational bands in 226Ra NUCLEAR STRUCTURE 226Ra; calculated rotational bands excitation energy, E1 transition strengths, octupole deformation. Extended coherent states model, comparison with data.
doi: 10.1016/S0375-9474(03)00668-7
2003RA45 Phys.Rev. C 68, 044317 (2003) A.A.Raduta, L.Zamick, E.Moya de Guerra, A.Faessler, P.Sarriguren Description of single and double analog states in the f7/2 shell: The Ti isotopes NUCLEAR STRUCTURE 43,44,45,46,47,48,49Ti; calculated single and double analog states energies, pairing strengths. Single j-shell formalism, particle-core formalism.
doi: 10.1103/PhysRevC.68.044317
2003SA15 Phys.Rev. C 67, 044313 (2003) P.Sarriguren, E.Moya de Guerra, L.Pacearescu, A.Faessler, F.Simkovic, A.A.Raduta Gamow-Teller strength distributions in 76Ge and 76Se from deformed quasiparticle random-phase approximation NUCLEAR STRUCTURE 76Ge, 76Se; calculated radii, quadrupole deformations, Gamow-Teller strength distributions. Deformed quasiparticle RPA, self-consistent and phenomenological approaches, comparison with data. Application to double beta decay discussed.
doi: 10.1103/PhysRevC.67.044313
2002RA02 Phys.Rev. C65, 024312 (2002) A.A.Raduta, A.Escuderos, E.Moya de Guerra Description of Collective Magnetic States within a Spherical Single Particle Basis NUCLEAR STRUCTURE 144,148,150,152,154Sm; calculated B(M1) strength distributions, related features. Quasiparticle RPA, spherical single particle basis. Comparisons with data, previous results.
doi: 10.1103/PhysRevC.65.024312
2002RA25 Phys.Rev. C65, 064322 (2002) A.A.Raduta, D.Ionescu, A.Faessler Unified Description of Three Positive and Three Negative Parity Interacting Bands NUCLEAR STRUCTURE 158Gd, 172Yb, 218,226Ra, 232Th, 238U, 238Pu; calculated rotational bands moments of inertia, excitation energies, transition probabilities. Unified description of multiple bands, comparison with data.
doi: 10.1103/PhysRevC.65.064322
2002RA26 Prog.Part.Nucl.Phys. 48, 233 (2002) Ground State of Double Beta Decaying Nuclei
doi: 10.1016/S0146-6410(02)00130-8
2002SM08 Czech.J.Phys. 52, 521 (2002) M.Smotlak, F.Simkovic, A.A.Raduta Looking for an Optimal Ground State within Quasiparticle Random Phase Approximation
doi: 10.1023/A:1015309327016
2001RA40 J.Phys.(London) G27, 2429 (2001) A.A.Raduta, O.Haug, F.Simkovic, A.Faessler New Results for 2νββ Decay with Large Particle-Particle Two-Body Proton-Neutron Interaction
doi: 10.1088/0954-3899/27/12/306
2001SI31 J.Phys.(London) G27, 1757 (2001) F.Simkovic, M.Smotlak, A.A.Raduta Quasiparticle Random-Phase Approximation with an Optimal Ground State
doi: 10.1088/0954-3899/27/8/305
2001SI33 Phys.Rev. C64, 035501 (2001) F.Simkovic, M.Nowak, W.A.Kaminski, A.A.Raduta, A.Faessler Neutrinoless Double Beta Decay of 76Ge, 82Se, 100Mo, and 136Xe to Excited 0+ States RADIOACTIVITY 76Ge, 82Se, 100Mo, 136Xe(2β-); calculated T1/2 for neutrinoless 2β-decay to ground and excited 0+ states.
doi: 10.1103/PhysRevC.64.035501
2000RA10 Nucl.Phys. A671, 255 (2000) A.A.Raduta, O.Haug, F.Simkovic, A.Faessler Semi-Classical Description of a System with Proton-Neutron Interaction
doi: 10.1016/S0375-9474(99)00836-2
2000RA13 J.Phys.(London) G26, 793 (2000) A.A.Raduta, F.Simkovic, A.Faessler Renormalized Boson Expansion for the 2νββ Decay RADIOACTIVITY 82Se(2β-); calculated β strengths, Gamow-Teller amplitudes, sum rules, total β- and β+ strengths in the 2-neutrino double β decay.
doi: 10.1088/0954-3899/26/6/304
2000RA18 Nucl.Phys. A675, 503 (2000) A.A.Raduta, L.Pacearescu, V.Baran, P.Sarriguren, E.Moya de Guerra Semi-Classical Treatment of Proton-Neutron Monopole Interaction
doi: 10.1016/S0375-9474(00)00183-4
2000RA22 J.Phys.(London) G26, 1327 (2000) A.A.Raduta, O.Haug, F.Simkovic, A.Faessler New Collective Modes for a Many-Body System with Proton-Neutron Pairing Interaction
doi: 10.1088/0954-3899/26/9/304
2000RA26 Nucl.Phys. A678, 382 (2000) A.A.Raduta, C.M.Raduta, B.Codirla New Features of Some Proton-Neutron Collective States
doi: 10.1016/S0375-9474(00)00324-9
2000RA32 Ann.Phys.(New York) 284, 134 (2000) Isospin and Particle Number Projection with Generalized Nucleon-Nucleon Pairing
doi: 10.1006/aphy.2000.6065
2000SI07 Phys.Rev. C61, 044319 (2000) F.Simkovic, A.A.Raduta, M.Veselsky, A.Faessler Quasiparticle Random Phase Approximation with Inclusion of the Pauli Exclusion Principle
doi: 10.1103/PhysRevC.61.044319
1998GH03 Nucl.Phys. A637, 201 (1998) A.Gheorghe, A.A.Raduta, V.Ceausescu Semiclassical Treatment of the Cranked Triaxial Rotator
doi: 10.1016/S0375-9474(98)00229-2
1998ME22 Nucl.Phys. A641, 321 (1998) U.Meyer, A.A.Raduta, A.Faessler Description of Even-Even Triaxial Nuclei within the Coherent State and the Triaxial Rotation-Vibration Models NUCLEAR STRUCTURE 126Xe, 130Ba, 228Th; calculated levels, J, π, vibrational, rotational bands, transitions B(E2). Coherent state model, triaxial rotation-vibration model.
doi: 10.1016/S0375-9474(98)00474-6
1998RA05 Phys.Rev. C57, 1512 (1998) A.A.Raduta, A.Faessler, R.K.Sheline Phenomenological Description of the K(π) = 0- Bands in Some Rn and Ra Isotopes NUCLEAR STRUCTURE 218,222,224,226Ra, 220,222Rn; calculated high-spin levels, J, π for ground state, K(π)=0- bands. Phenomenological model.
doi: 10.1103/PhysRevC.57.1512
1998RA11 Nucl.Phys. A634, 497 (1998) A.A.Raduta, C.M.Raduta, A.Faessler, W.A.Kaminski Description of the 2νββ Decay within a Fully Renormalised RPA Approach
doi: 10.1016/S0375-9474(98)00179-1
1997RA07 Phys.Rev. C55, 1747 (1997) A.A.Raduta, Al.H.Raduta, A.Faessler Phenomenological Description of Rotational Bands in the Pear Shaped Nuclei NUCLEAR STRUCTURE 218,220,226Ra; calculated levels, interband B(λ) ratios. Extended coherent state model.
doi: 10.1103/PhysRevC.55.1747
1997RA09 Nucl.Phys. A617, 176 (1997) A.A.Raduta, D.S.Delion, A.Faessler The Nuclear Deformation Versus the Spin-Flip Like Excitations and the Suppression of the 2νββ Decay Amplitude RADIOACTIVITY 82Se(2β), (β-); calculated double-, single β-decay associated transition amplitudes, other aspects; deduced Gamow-Teller transition suppression related features. RPA, quasiparticle RPA, spin-flip, nonspin-flip excitations.
doi: 10.1016/S0375-9474(97)00039-0
1997RA20 J.Phys.(London) G23, L49 (1997) A.A.Raduta, A.H.Raduta, A.Faessler Positive and Negative Parity Bands in Pear-Shaped Nuclei NUCLEAR STRUCTURE 218,220,226Ra; calculated levels, B(λ); deduced band structure. Projection from intrinsic quadrupole, octupole-deformed ground state, nondefinite reflection parity.
doi: 10.1088/0954-3899/23/7/002
1996RA01 Phys.Rev. C53, 176 (1996) Description of β Decay to Excited Quadrupole Phonon States within a Boson-Expansion Formalism RADIOACTIVITY 118,120In(β-); 118,120Sb(β+); calculated log ft, transition amplitudes vs (g(pp)). Boson expansion formalism, quadrupole phonon states.
doi: 10.1103/PhysRevC.53.176
1996RA10 J.Phys.(London) G22, 123 (1996) Boson-Expansion Description of Beta Decay to Excited Final States RADIOACTIVITY 118Sb(EC), (β+); 118In(β-); calculated β-decay transition amplitude vs (g(pp)), log ft. Boson expansion theory.
doi: 10.1088/0954-3899/22/1/011
1996RA37 Nucl.Phys. A608, 11 (1996) A.A.Raduta, N.Lo Iudice, I.I.Ursu Low-Lying Octupole Bands in the Coherent State Model NUCLEAR STRUCTURE 158Gd, 172Yb, 218,220,226Ra, 228,230,232Th, 232,234,236,238U, 238Pu; calculated levels, 0--band energy displacements, B(λ) ratios, octupole bands quadrupole moments. Coherent state model.
doi: 10.1016/S0375-9474(96)00264-3
1996RA41 Roum.J.Phys. 40, 807 (1996) Towards a New Phenomenological Description of Nuclei with Static Octupole Shapes
1996RA47 Nuovo Cim. 109A, 1669 (1996) A.A.Raduta, N.Lo Iudice, I.I.Ursu Low-Lying Negative-Parity Bands in Heavy Nuclei: A phenomenological approach NUCLEAR STRUCTURE 158Gd, 172Yb, 218,220,226Ra, 238Pu, 228,230,232Th, 232,234,236,238U; calculated levels, energy displacements. Interacting boson Hamiltonian, quadrupole, octupole bosons.
doi: 10.1007/BF02773548
1995BB01 Roum.J.Phys. 40, 433 (1995) V.Baran, A.A.Raduta, D.S.Delion Order and Chaos Described by a Quadrupole Boson Hamiltonian
1995RA01 Nucl.Phys. A584, 84 (1995) A.A.Raduta, N.Lo Iudice, I.I.Ursu Description of Orbital and Spin Excitations within a Projected Spherical Single-Particle Basis NUCLEAR STRUCTURE 144,148,150,152,154Sm; calculated B(λ), transition strength distributions. Quasiparticle RPA approach.
doi: 10.1016/0375-9474(94)00510-T
1995RA09 Nucl.Phys. A588, 431 (1995) A.A.Raduta, V.Baran, D.S.Delion Semiclassical Treatment of Quadrupole Boson Hamiltonians: New results for small and large amplitude regimes
doi: 10.1016/0375-9474(95)00056-7
1995RA10 Phys.Rev. C51, 2973 (1995) Description of the Scissors Mode within the Moszkowski Model
doi: 10.1103/PhysRevC.51.2973
1995RA11 Phys.Rev. C51, 3008 (1995) A.A.Raduta, D.S.Delion, A.Faessler Description of the 2νββ Transition Rate within the Moszkowski Model
doi: 10.1103/PhysRevC.51.3008
1994LO09 Phys.Rev. C50, 127 (1994) N.Lo Iudice, A.A.Raduta, D.S.Delion Deformation Properties of the Scissors Mode in the Generalized Coherent State Model NUCLEAR STRUCTURE 142,146,148,150Nd, 144,148,150,152,154Sm, 154,156,158,160Gd, 160,162,164Dy, 168Er; calculated levels, B(λ). Generalized coherent state model, scissors mode.
doi: 10.1103/PhysRevC.50.127
1993LO02 Phys.Lett. 300B, 195 (1993) N.Lo Iudice, A.A.Raduta, D.S.Delion Scissors Mode and Nuclear Deformation in the Generalized Coherent State Model NUCLEAR STRUCTURE 148,150,152,154Sm; calculated M1 transition strength, energy. Generalized coherent state model.
doi: 10.1016/0370-2693(93)90352-I
1993RA01 Nucl.Phys. A551, 93 (1993) A.A.Raduta, D.S.Delion, N.Lo Iudice A Projected Single-Particle Basis for Deformed Nuclei NUCLEAR STRUCTURE A=48, 50, 52, 54, 56; calculated neutron pairing gap vs neutron number, quasiparticle, neutron single particle energies vs deformation. N=28-32; calculated neutron pairing gap vs deformation, neutron number. Deformed nuclei, projected single-particle basis.
doi: 10.1016/0375-9474(93)90305-H
1993RA06 Phys.Lett. 312B, 13 (1993) A.A.Raduta, D.S.Delion, A.Faessler Influence of Nuclear Deformation on the 2νββ Decay RADIOACTIVITY 82Se(2β); calculated 2ν-accompanied 2β-decay Gamow-Teller transition amplitude vs particle-particle strength parameter. Schematic model.
doi: 10.1016/0370-2693(93)90478-Z
1993RA13 Nucl.Phys. A564, 185 (1993) A.A.Raduta, A.Faessler, D.S.Delion Unified Description of the 2νββ Decay in Spherical and Deformed Nuclei RADIOACTIVITY 82Se(2β); calculated 2ν-accompanied 2β-decay amplitude vs particle-particle channel strength parameter, deformation. Quasiparticle RPA.
doi: 10.1016/0375-9474(93)90516-Z
1993RA22 Int.J.Mod.Phys. E2, 629 (1993) A.A.Raduta, N.Sandulescu, J.Suhonen Semiclassical Description of Spin Excitations of the Particle-Core Interaction System
doi: 10.1142/S0218301393000273
1992RA14 Nuovo Cim. 105A, 663 (1992) A.A.Raduta, I.I.Ursu, N.Lo Iudice Low-Lying Bands as Alpha-Like Dipole Excitations of a Coherent Quadrupole Boson State NUCLEAR STRUCTURE 224,226Ra, 230,232Th, 238U, 238Pu; calculated levels, B(λ) ratios. Interacting boson Hamiltonian, coherent state model.
doi: 10.1007/BF02730772
1992RA24 Phys.Rev. C46, 1782 (1992) A.A.Raduta, I.I.Ursu, N.Lo Iudice Description of Collective Spin Excitations in Deformed Nuclei within a Projected Single-Particle Basis NUCLEAR STRUCTURE 154Sm; calculated nucleon single particle energies vs deformation parameter, M1 transition strength distribution. Schematic RPA, projected single particle basis.
doi: 10.1103/PhysRevC.46.1782
1991RA07 Phys.Lett. 254B, 7 (1991) A.A.Raduta, A.Faessler, S.Stoica, W.A.Kaminski The 2vββ Decay Rate within a Higher RPA Approach RADIOACTIVITY 82Se(2β); calculated Gamow-Teller matrix element. Quasiparticle RPA, higher terms.
doi: 10.1016/0370-2693(91)90385-4
1991RA15 Phys.Rev. C44, 1929 (1991) A.A.Raduta, D.S.Delion, I.I.Ursu, N.Lo Iudice Semiclassical Description of Alpha Clustering in Heavy Nuclei NUCLEAR STRUCTURE 220Ra; calculated n, p occupation probability, gap parameters, levels. 220,218,222Ra, 214,216,218Rn, 222,224Th, 212Po; calculated ground state energy vs α-cluster number. Semi-classical model.
doi: 10.1103/PhysRevC.44.1929
1991RA16 Nucl.Phys. A534, 149 (1991) A.A.Raduta, A.Faessler, S.Stoica The 2νββ Decay Rate within a Boson Expansion Formalism RADIOACTIVITY 82Se(2β); calculated 2ν-accompanied double β-decay rate, Gamow-Teller transition rate. Boson expansion formalism.
doi: 10.1016/0375-9474(91)90561-J
1990RA10 Phys.Rev. C41, 2358 (1990) A.A.Raduta, I.I.Ursu, J.Suhonen, N.Lo Iudice Electromagnetic Properties of Some Positive Parity Dipole States Described in Terms of Quadrupole and Octupole Interacting Bosons NUCLEAR STRUCTURE 238U; calculated levels, B(λ). Phenomenological quadrupole-octupole boson Hamiltonian.
doi: 10.1103/PhysRevC.41.2358
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