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NSR database version of May 1, 2024.

Search: Author = R.Poenaru

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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
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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, T_1/2 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 T_1/2 of the 2⁺ state. Comparison to experimental data.

doi: 10.1103/PhysRevC.106.044301
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2021PO07      Int.J.Mod.Phys. E30, 2150033 (2021)

R.Poenaru, A.A.Raduta

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
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2021PO08      Rom.J.Phys. 66, 308 (2021)

R.Poenaru, A.A.Raduta

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)

R.Poenaru, A.A.Raduta

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
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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, 167}Lu

NUCLEAR STRUCTURE ^{161,163,165,167}Lu; 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
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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
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2018RA21      J.Phys.(London) G45, 105104 (2018)

A.A.Raduta, R.Poenaru, A.H.Raduta

Wobbling motion in ^{165, 167}Lu 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
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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
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