NSR Query Results
Output year order : Descending NSR database version of April 11, 2024. Search: Author = S.Stoica Found 38 matches. 2023HO04 Phys.Rev. C 107, 045501 (2023) Predicting the neutrinoless double-β-decay matrix element of 136Xe using a statistical approach RADIOACTIVITY 136Xe(2β-); calculated nuclear matrix elements (NMEs) of 0νββ-decay, probability distributions of NMEs calculated with SVD, jj55t and gcn5082 Hamiltonians. Statistical method based on Bayesian averaging model for analyzing the distribution and the theoretical uncertainty of the 0νββ decay NMEs. Obtained correlation matrix between 24 observables and defined the set of desired experimental precise values to reduce uncertainties in NMEs.
doi: 10.1103/PhysRevC.107.045501
2023NI03 Phys.Rev. C 107, 025501 (2023) O.Nitescu, S.Stoica, F.Simkovic Exchange correction for allowed β decay RADIOACTIVITY 14C, 45Ca, 63Ni, 241Pu(β-); Z=1-102(β-); calculated Eβ β-spectrum shape, exchange corrections to the β-spectrum, contributions from exchange with occupied orbitals, antineutrino spectra corresponding to the β transitions. Dirac-Hartree-Fock-Slater self-consistent method modified to ensure the orthogonality between the continuum and bound electron states in the potential of the final atom.
doi: 10.1103/PhysRevC.107.025501
2022HO16 Phys.Rev. C 106, 054302 (2022) Statistical analysis for the neutrinoless double-β-decay matrix element of 48Ca NUCLEAR STRUCTURE 48Ca, 48Ti; calculated levels, J, π, B(E2), occupation probabilities, Gamow-Teller strength, probability density functions (PDF) for observables. Interactive shell model in the fp-shell model space with FPD6, GXPF1A, and KB3G effective Hamiltonians. Comparison to experimental values. RADIOACTIVITY 48Ca(2β-); calculated nuclear matrix elements (NMEs) of 0νββ-decay and 2νββ, GT-strength, NME probability density function. Interactive shell model in the fp-shell model space with FPD6, GXPF1A, and KB3G effective Hamiltonians. Obtained correlation matrix between 24 observables and defined the set of desired experimental precise values to reduce uncertainties in NMEs.
doi: 10.1103/PhysRevC.106.054302
2021NI02 Phys.Rev. D 103, L031701 (2021) O.V.Nitescu, S.A.Ghinescu, M.Mirea, S.Stoica Probing Lorentz violation in 2νββ using single electron spectra and angular correlations RADIOACTIVITY 100Mo(2β-); calculated Lorentz invariance violation (LIV) in the summed energy spectra of electrons.
doi: 10.1103/PhysRevD.103.L031701
2021NI10 Universe 7, 147 (2021) O.Nitescu, R.Dvornicky, S.Stoica, F.Simkovic Angular Distributions of Emitted Electrons in the Two-Neutrino ββ Decay
doi: 10.3390/universe7050147
2020NA41 Universe 6, 5 (2020) J.-U.Nabi, M.Ishfaq, O.Nitescu, M.Mirea, S.Stoica β-Decay Half-Lives of Even-Even Nuclei Using the Recently Introduced Phase Space Recipe
doi: 10.3390/universe6010005
2020NI07 J.Phys.(London) G47, 055112 (2020) O.Nitescu, S.Ghinescu, S.Stoica Lorentz violation effects in νββ decay RADIOACTIVITY 48Ca, 76Ge, 82Se, 100Mo, 110Pd, 116Cd, 130Te, 136Xe(2β-); calculated phase space factors, summed energy spectra of electrons, Lorentz invariance violation (LIV) effects. Comparison with available data.
doi: 10.1088/1361-6471/ab7e8c
2019ST08 Chin.Phys.C 43, 064108 (2019) Computation of products of phase space factors and nuclear matrix elements for double beta decay RADIOACTIVITY 48Ca, 76Ge, 82Se, 130Te, 136Xe(2β-); calculated nuclear matrix elements and phase space factors. Comparison with experimental data.
doi: 10.1088/1674-1137/43/6/064108
2019ST14 Front.Phys.(Lausanne) 7, 12 (2019) Phase Space Factors for Double-Beta Decays RADIOACTIVITY 48Ca, 76Ge, 82Se, 96Zr, 100Mo, 110Pd, 116Cd, 128,130Te, 136Xe, 150Nd, 238U(2β-), 78Kr, 96Ru, 106Cd, 124Xe, 130Ba, 136Ce(2β+), 78Kr, 96Ru, 106Cd, 124Xe, 130Ba, 136Ce, 50Cr, 58Ni, 64Zn, 74Se, 84Sr, 92Mo, 102Pd, 112Sn, 120Te, 144Sm, 156Dy, 162Er, 168Yb, 174Hf, 184Os, 190Pt(β+EC), 78Kr, 96Ru, 106Cd, 124Xe, 130Ba, 136Ce, 78Kr, 96Ru, 106Cd, 124Xe, 130Ba, 136Ce, 50Cr, 58Ni, 64Zn, 74Se, 84Sr, 92Mo, 102Pd, 112Sn, 120Te, 144Sm, 156Dy, 162Er, 168Yb, 174Hf, 184Os, 190Pt, 36Ar, 40Ca, 54Fe, 108Cd, 126Xe, 132Ba, 138Ce, 152Gd, 158Dy, 164Er, 180W, 196Hg(2EC); analyzed available data; deduced phase factors, decay parameters.
doi: 10.3389/fphy.2019.00012
2013ST19 Phys.Rev. C 88, 037303 (2013) New calculations for phase space factors involved in double-β decay RADIOACTIVITY 48Ca, 76Ge, 82Se, 96Zr, 100Mo, 110Pd, 116Cd, 128,130Te, 136Xe, 150Nd, 238U(2β-); calculated phase space factors (PSF) for ββ transitions to ground states and excited 0+ states. Numerical solution of Dirac equation including the finite nuclear size and electron screening effects. Comparison with other theoretical calculations using different approximations, and discussed possible causes of differences.
doi: 10.1103/PhysRevC.88.037303
2012NE11 Phys.Rev. C 86, 067304 (2012) Fast, efficient calculations of the two-body matrix elements of the transition operators for neutrinoless double-β decay RADIOACTIVITY 48Ca, 82Se(2β-); calculated two-body matrix elements (TBME) of neutrinoless double beta (0νββ) decay transition operator using a new, and fast algorithm.
doi: 10.1103/PhysRevC.86.067304
2010HO02 Phys.Rev. C 81, 024321 (2010) Shell model analysis of the neutrinoless double-β decay of 48Ca RADIOACTIVITY 48Ca(2β-); calculated nuclear matrix elements for neutrinoless double-β decay using large-scale shell model. NUCLEAR STRUCTURE 48Ca, 48Ti; calculated neutron and proton occupation probabilities, and nuclear matrix elements for double-β decay using large-scale shell model.
doi: 10.1103/PhysRevC.81.024321
2010NE02 J.Phys.(London) G37, 055109 (2010) A.G.Negoita, J.P.Vary, S.Stoica No-core shell model for A = 47 and A = 49 NUCLEAR STRUCTURE 47K, 47,48,49Ca, 49Sc; calculated single-particle ground and excitation energy levels, correlation matrix elements. GXPF1 interaction.
doi: 10.1088/0954-3899/37/5/055109
2009ST25 Nucl.Phys. A828, 439 (2009); Addendum Nucl.Phys. A832, 148 (2010) S.Stoica, B.Pastrav, J.E.Horvath, M.P.Allen Pion mass effects on axion emission from neutron stars through NN bremsstrahlung processes
doi: 10.1016/j.nuclphysa.2009.07.007
2009VA09 J.Phys.(London) G36, 085103 (2009) J.P.Vary, S.Popescu, S.Stoica, P.Navratil A no-core shell model for 48Ca, 48Sc and 48Ti NUCLEAR STRUCTURE 48Ca, 48Sc, 48Ti; calculated binding, excitation energies, J, π. NCSM model, comparison with experiment.
doi: 10.1088/0954-3899/36/8/085103
2007HO07 Phys.Rev. C 75, 034303 (2007) Shell-model calculations of two-neutrino double-β decay rates of 48Ca with the GXPF1A interaction NUCLEAR STRUCTURE 48Ca; calculated 2νββ-decay matrix elements, T1/2 for decay to ground and excited states. Shell model approach. RADIOACTIVITY 48Ca(2β-); calculated 2νββ-decay matrix elements, T1/2 for decay to ground and excited states. Shell model approach.
doi: 10.1103/PhysRevC.75.034303
2005VA32 Eur.Phys.J. A 25, Supplement 1, 475 (2005) J.P.Vary, O.V.Atramentov, B.R.Barrett, M.Hasan, A.C.Hayes, R.Lloyd, A.I.Mazur, P.Navratil, A.G.Negoita, A.Nogga, W.E.Ormand, S.Popescu, B.Shehadeh, A.M.Shirokov, J.R.Spence, I.Stetcu, S.Stoica, T.A.Weber, S.A.Zaytsev Ab initio No-Core Shell Model -- Recent results and future prospects NUCLEAR STRUCTURE 4He; calculated radius. 6Li, 16O, 48Ar, 48K, 48Ca, 48Sc, 48Ti, 48V, 48Cr, 48Mn; calculated ground-state energies. 16O, 47Ca; calculated excited states energies. No-core shell model.
doi: 10.1140/epjad/i2005-06-214-x
2004ST15 Phys.Rev. C 69, 068801 (2004) S.Stoica, V.P.Paun, A.G.Negoita Nuclear effects on neutrino emissivities from nucleon-nucleon bremsstrahlung
doi: 10.1103/PhysRevC.69.068801
2004ST26 Yad.Fiz. 67, 1814 (2004); Phys.Atomic Nuclei 67, 1786 (2004) Double-Beta Decay and Neutrino Mass RADIOACTIVITY 76Ge, 82Se, 96Zr, 100Mo, 116Cd, 128,130Te, 136Xe(2β-); calculated matrix elements, T1/2 for 0ν-accompanied 2β-decay. Quasiparticle RPA, comparison with data, implications for neutrino mass discussed.
doi: 10.1134/1.1811179
2003ST14 Eur.Phys.J. A 17, 529 (2003) S.Stoica, H.V.Klapdor-Kleingrothaus Calculation of the β+ β+, β+ /EC and EC/EC half-lives for 106Cd with the second quasi random phase approximation method RADIOACTIVITY 106Cd(2β+), (β+EC), (2EC); calculated decay matrix elements, T1/2. Second quasi RPA method.
doi: 10.1140/epja/i2003-10028-0
2002ST03 Phys.Rev. C65, 028801 (2002) Nuclear Effects on Bremsstrahlung Neutrino Rates of Astrophysical Interest
doi: 10.1103/PhysRevC.65.028801
2001ST13 Phys.Rev. C63, 064304 (2001) S.Stoica, H.V.Klapdor-Kleingrothaus Neutrinoless Double-β-Decay Matrix Elements within the Second Quasirandom Phase Approximation Method RADIOACTIVITY 76Ge, 82Se, 96Zr, 100Mo, 116Cd, 128,130Te, 136Xe(2β-); calculated matrix elements for neutrinoless 2β decay. Second quasirandom phase approximation.
doi: 10.1103/PhysRevC.63.064304
2001ST17 Phys.Rev. C64, 017303 (2001) Test of the Proton-Neutron Random-Phase Approximation Method within an Extended Lipkin-Type Model
doi: 10.1103/PhysRevC.64.017303
2001ST24 Nucl.Phys. A694, 269 (2001) S.Stoica, H.V.Klapdor-Kleingrothaus Critical View on Double-Beta Decay Matrix Elements within Quasi Random Phase Approximation-Based Methods RADIOACTIVITY 82Se, 96Zr, 100Mo, 116Cd, 128,130Te, 136Xe(2β-); calculated 0ν and 2ν accompanied 2β-decay matrix elements, T1/2. Quasi RPA approach.
doi: 10.1016/S0375-9474(01)00988-5
2000ST32 Eur.Phys.J. A 9, 345 (2000) S.Stoica, H.V.Klapdor-Kleingrothaus Double-Beta Decay Matrix Elements for 76Ge RADIOACTIVITY 76Ge(2β); calculated matrix element for the 2-neutrino and neutrinoless decay modes; deduced neutrino mass upper value. Random phase approximation calculations.
doi: 10.1007/s100500070018
1998ST30 Eur.Phys.J. A 3, 319 (1998) Charge-Changing Transitions in an Extended Lipkin-Type Model
doi: 10.1007/s100500050186
1997ST15 Nucl.Phys. A620, 16 (1997) An Extended Lipkin-Type Model with Residual Proton-Neutron Interaction
doi: 10.1016/S0375-9474(97)00153-X
1996ST19 Nucl.Phys. A602, 197 (1996) Nuclear Structure Calculations of Two-Neutrino Double-Beta Decay Transitions to Excited Final States RADIOACTIVITY 76Ge, 96Zr, 100Mo, 116Cd, 136Xe(2β); calculated 2ν-accompanied 2β-decay T1/2, Gamow-Teller matrix elements. Quasi-RPA, other nuclei, other aspects discussed.
doi: 10.1016/0375-9474(96)00122-4
1996ST36 Roum.J.Phys. 41, 481 (1996) Higher-Order QRPA for Charge-Changing Processes
1995ST19 Phys.Lett. 350B, 152 (1995) Two-Neutrino Double-Beta Decay Half-Lives of 96Zr and 100Mo to Excited States of 96Mo and 100Ru NUCLEAR STRUCTURE 100Mo, 96Zr; calculated 2ν-accompanied 2β-decay T1/2, log ft, Gamow-Teller matrix elements, B(λ). Second quasi-RPA.
doi: 10.1016/0370-2693(95)00326-G
1994ST04 Phys.Rev. C49, 2240 (1994) Half-Lives for Two Neutrino Double-Beta-Decay Transitions to First 2+ Excited RADIOACTIVITY 76Ge, 82Se, 110Pd, 116Cd, 128,130Te, 136Xe(2β); calculated 2ν-accompanied 2β-decay T1/2, transitions to first 2+ states; deduced (g(pp)) parameter dependence. Second quasirandom phase approximation.
doi: 10.1103/PhysRevC.49.2240
1993ST05 Phys.Rev. C47, 867 (1993) Gamow-Teller Matrix Elements for Two-Neutrino Double β Decay within a Second Quasi-Random-Phase Approximation RADIOACTIVITY 76Ge, 116,110Cd, 128,130Te, 136Ba(2β); calculated Gamow-Teller matrix element vs (particle)(particle)-strength. Second order quasiparticle RPA.
doi: 10.1103/PhysRevC.47.867
1993ST17 Nuovo Cim. 106A, 723 (1993) Double-β-Decay Rates within a Second Quasi-Random-Phase Approximation RADIOACTIVITY 76Ge, 110,116Cd, 128,130Te, 136Ba(2β); calculated 2β-decay, Gamow-Teller matrix elements. Second quasiparticle RPA procedure.
doi: 10.1007/BF02771490
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
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
1987RA11 Z.Phys. A327, 275 (1987) Coupling of One and Three Quasiparticles to a Collective Core Projected from Quadrupole Coherent States NUCLEAR STRUCTURE 189,191,193Pt; calculated levels, gyromagnetic factors, electric quadrupole, magnetic dipole moments, B(M1), B(E2). Particle-core coupling, coherent state models.
1984RA05 Rev.Roum.Phys. 29, 55 (1984) A.A.Raduta, S.Stoica, N.Sandulescu The Energies Predicted by the Coherent State Model for near Vibrational Nuclei NUCLEAR STRUCTURE 188,190,192,194Pt, 182,184,186,188,190,192Os, 194,196Hg, 162Dy; calculated levels. Coherent state model.
1983RA42 Rev.Roum.Phys. 28, 867 (1983) The Phenomenological Description of the Rotational Spectra of 189,191,193Pt NUCLEAR STRUCTURE 189,191,193Pt; calculated levels, μ, electric quadrupole moment, rotational band structure. Phenomenological Hamiltonian, multipole-multipole interaction.
Back to query form |