NSR Query Results
Output year order : Descending NSR database version of April 29, 2024. Search: Author = A.Porrino Found 38 matches. 2015KN01 Phys.Rev. C 92, 054315 (2015) F.Knapp, N.Lo Iudice, P.Vesely, F.Andreozzi, G.De Gregorio, A.Porrino Dipole response in 208Pb within a self-consistent multiphonon approach NUCLEAR STRUCTURE 208Pb; calculated pygmy and giant-dipole resonance cross sections, energy levels, B(E1), neutron skin radius using self-consistent multiphonon, equation of motion phonon method (EMPM). Comparison with experimental data.
doi: 10.1103/PhysRevC.92.054315
2014BI01 J.Phys.(London) G41, 025109 (2014) D.Bianco, F.Knapp, N.Lo Iudice, P.Vesely, F.Andreozzi, G.De Gregorio, A.Porrino A self-consistent study of multipole response in neutron-rich nuclei using a modified realistic potential NUCLEAR STRUCTURE 16,18,20,22O, 116,124,130,132Sn; calculated neutron single-particle spectra, B(E1), strength functions. HFB, comparison with available data.
doi: 10.1088/0954-3899/41/2/025109
2014KN01 Phys.Rev. C 90, 014310 (2014) F.Knapp, N.Lo Iudice, P.Vesely, F.Andreozzi, G.De Gregorio, A.Porrino Dipole response in 132Sn within a self-consistent multiphonon approach NUCLEAR STRUCTURE 132Sn; calculated neutron and proton single-particle levels, pygmy resonances, dipole response, isovector and isoscalar E1 strengths, neutron particle-hole phonon composition, E1 transition density; strength fragmentation enhanced. Equation of motion phonon method and Tamm-Dancoff approximation with Hartree-Fock basis. Comparison with experimental results.
doi: 10.1103/PhysRevC.90.014310
2013BI08 Phys.Rev. C 88, 024303 (2013) D.Bianco, N.Lo Iudice, F.Andreozzi, A.Porrino, F.Knapp Spectroscopy of neutron-rich Te and Xe isotopes within a new shell model context NUCLEAR STRUCTURE 134Sn, 134,136,138,140Te, 136,138,140Xe; calculated levels, J, π, B(E2), B(M1); deduced collectivity, neutron-proton symmetry. Large-scale shell model calculation based on an iterative matrix diagonalization algorithm. Comparison with experimental data. Systematics of energies and B(E2) values of first 2+ states in even-even A=126-140 Te and A=132-140 Xe nuclei.
doi: 10.1103/PhysRevC.88.024303
2012BI01 Phys.Rev. C 85, 014313 (2012) D.Bianco, F.Knapp, N.Lo Iudice, F.Andreozzi, A.Porrino Upgraded formulation of the nuclear eigenvalue problem in a microscopic multiphonon basis NUCLEAR STRUCTURE 16O; calculated E1 strength function and cross section, isoscalar E2 reduced strength, phonon structure of 0+, 1- and 2+ states. Equation of motion method; eigenvalue problem in multiphonon space in terms of Tamm-Dancoff phonons, and Nilsson or Hartree-Fock basis. Comparison with experimental data.
doi: 10.1103/PhysRevC.85.014313
2012BI04 Phys.Rev. C 85, 034332 (2012) D.Bianco, F.Andreozzi, N.Lo Iudice, A.Porrino, F.Knapp Importance-sampling diagonalization algorithm for large-scale shell model calculations on N=80 isotones NUCLEAR STRUCTURE 132Te, 134Xe, 136Ba, 138Ce, 140Nd, 142Sm; calculated levels, J, π, B(E2), B(M1), mixed symmetry states. Iterative matrix diagonalization algorithm with an importance sampling, convergence properties. Comparison with experimental data, other shell-model calculations, and systematics of lowest 2+ states in N=80 isotones.
doi: 10.1103/PhysRevC.85.034332
2012BI11 Phys.Rev. C 86, 044325 (2012) D.Bianco, N.Lo Iudice, F.Andreozzi, A.Porrino, F.Knapp Mixed-symmetry states in Te isotopes within a large-scale shell model approach NUCLEAR STRUCTURE 126,128,130,132Te; calculated levels, B(E2), B(M1), using large-scale shell model calculations with a new diagonalization algorithm. Mixed symmetry states. Comparison with experimental data.
doi: 10.1103/PhysRevC.86.044325
2012BI12 Phys.Rev. C 86, 044327 (2012) D.Bianco, F.Knapp, N.Lo Iudice, F.Andreozzi, A.Porrino, P.Vesely Electric dipole response in 208Pb within a new microscopic multiphonon approach NUCLEAR STRUCTURE 208Pb; calculated dipole resonances, E1 σ(ω), B(E1) for giant and pygmy dipole resonances (GDR and PDR) using the microscopic multiphonon approach with a new equation of motion phonon method. Comparison with experimental data.
doi: 10.1103/PhysRevC.86.044327
2012BI17 J.Phys.:Conf.Ser. 366, 012004 (2012) D.Bianco, F.Andreozzi, N.Lo Iudice, A.Porrino, F.Knapp Complex nuclear spectra in a large scale shell model approach NUCLEAR STRUCTURE 130,131,132,133,134Xe; calculated level energy, B(E2), B(M1). 132,133,134Xe calculated low-energy states energy, J, π, γ transitions. 130Xe calculated energy spectrum. Compared to data.
doi: 10.1088/1742-6596/366/1/012004
2012KN03 J.Phys.:Conf.Ser. 337, 012028 (2012) F.Knapp, D.Bianco, N.Lo Iudice, F.Andreozzi, A.Porrino Multiphonon nuclear response in 16O: A microscopic treatment equivalent to shell model NUCLEAR STRUCTURE 16O; calculated energy levels, γ E1 strength distribution using multiphonon states built on Tamm-Dancoff phonons.
doi: 10.1088/1742-6596/337/1/012028
2012LO17 J.Phys.:Conf.Ser. 366, 012031 (2012) N.Lo Iudice, D.Bianco, F.Knapp, F.Andreozzi, A.Porrino, P.Vesely Multiphonon Approaches to Complex Spectroscopy
doi: 10.1088/1742-6596/366/1/012031
2011BI07 Phys.Rev. C 84, 024310 (2011) D.Bianco, F.Andreozzi, N.Lo Iudice, A.Porrino, F.Knapp Matrix diagonalization algorithm and its applicability to the nuclear shell model NUCLEAR STRUCTURE 130,132,134Xe; calculated levels, J, B(E2), B(M1). New matrix diagonalization algorithm, shell model calculations. Comparison with experimental data.
doi: 10.1103/PhysRevC.84.024310
2011BI11 J.Phys.:Conf.Ser. 312, 092018 (2011) D.Bianco, F.Andreozzi, N.Lo Iudice, A.Porrino, F.Knapp A new algorithm for large scale shell model calculations and its applicability to medium-heavy and neutron rich nuclei NUCLEAR STRUCTURE 128Te; calculated low-lying states E, J, π, B(E2) using large-scale shell model.
doi: 10.1088/1742-6596/312/9/092018
2010BI16 J.Phys.:Conf.Ser. 205, 012002 (2010) D.Bianco, F.Andreozzi, N.Lo Iudice, A.Porrino, S.Dimitrova An upgraded version of an importance sampling algorithm for large scale shell model calculations NUCLEAR STRUCTURE 48Cr, 110Sn; calculated specified levels, J, π using large scale shell model with sampling iterative algorithm.
doi: 10.1088/1742-6596/205/1/012002
2010LO13 J.Phys.:Conf.Ser. 205, 012008 (2010) N.Lo Iudice, F.Andreozzi, F.Knapp, A.Porrino, J.Kvasil Role of multiphonon configurations in nuclear spectra and responses: A new approach NUCLEAR STRUCTURE 16O; calculated levels, J, π, Eλ distributions using EMPM (Equation of Motion Phonon Method), Tamm-Dancoff approximation, RPA. Compared with data.
doi: 10.1088/1742-6596/205/1/012008
2009AN13 Int.J.Mod.Phys. E18, 944 (2009) F.Andreozzi, F.Knapp, N.Lo Iudice, A.Porrino, J.Kvasil A new equation of motion method for multiphonon nuclear spectra NUCLEAR STRUCTURE 16O; calculated level properties: J, π, multi-phonon states.
doi: 10.1142/S0218301309013087
2008AN12 Phys.Rev. C 78, 054308 (2008) F.Andreozzi, F.Knapp, N.Lo Iudice, A.Porrino, J.Kvasil Multiphonon nuclear response in 16O: A microscopic treatment equivalent to the shell model NUCLEAR STRUCTURE 16O; calculated E1, E2, E3 transition strengths, level energies.
doi: 10.1103/PhysRevC.78.054308
2008KV01 Int.J.Mod.Phys. E17, 196 (2008) J.Kvasil, N.Lo Iudice, F.Andreozzi, A.Porrino, F.Knapp Collective bands in superdeformed nuclei NUCLEAR STRUCTURE 152Dy, 190Hg; analyzed superdeformed bands, and strength of E1 transitions using Cranked Nilsson + QRPA Model.
doi: 10.1142/S0218301308009690
2007AN05 Int.J.Mod.Phys. E16, 580 (2007) F.Andreozzi, N.Lo Iudice, A.Porrino, F.Knapp, J.Kvasil An exact microscopic multiphonon approach to nuclear collective excitations NUCLEAR STRUCTURE 16O; calculated E1 and E2 strength distributions.
doi: 10.1142/S0218301307006022
2007AN13 Phys.Rev. C 75, 044312 (2007) F.Andreozzi, F.Knapp, N.Lo Iudice, A.Porrino, J.Kvasil Exact formulation and solution of the nuclear eigenvalue problem in a microscopic multiphonon space NUCLEAR STRUCTURE 16O; calculated levels, J, π, E3 strength distribution. Tamm-Dancoff phonons.
doi: 10.1103/PhysRevC.75.044312
2007AN15 Prog.Part.Nucl.Phys. 59, 259 (2007) F.Andreozzi, F.Knapp, N.Lo Iudice, A.Porrino, J.Kvasil A new exact microscopic multiphonon approach to the nuclear eigenvalue problem NUCLEAR STRUCTURE 16O; calculated E2 reduced strength, Isovector E1 strength and Isoscalar dipole strength distributions using an exact microscopic multiphonon approach to the nuclear eigenvalue problem.
doi: 10.1016/j.ppnp.2006.12.007
2007AN24 Nucl.Phys. A788, 20c (2007) F.Andreozzi, N.Lo Iudice, A.Porrino, F.Knapp, J.Kvasil An exact microscopic multiphonon approach to collective modes in nuclei NUCLEAR STRUCTURE 16O; calculated E1 strength distribution. Tamm-Dancoff phonons.
doi: 10.1016/j.nuclphysa.2007.01.003
2007KV02 Phys.Rev. C 75, 034306 (2007) J.Kvasil, N.Lo Iudice, F.Andreozzi, F.Knapp, A.Porrino Microscopic structure of deformed and superdeformed collective bands in rotating nuclei NUCLEAR STRUCTURE 190,192,194Hg, 152Dy; calculated deformed and superdeformed rotational bands energies, configurations, strength distributions for linking transitions. Cranked Nilsson plus quasiparticle RPA approach.
doi: 10.1103/PhysRevC.75.034306
2006KV02 Phys.Rev. C 73, 034302 (2006) J.Kvasil, N.Lo Iudice, F.Andreozzi, F.Knapp, A.Porrino Shape transitions and collective excitations in 152Dy NUCLEAR STRUCTURE 152Dy; calculated deformation, superdeformation, rotational bands moments of inertia, B(E1), B(E0), B(M1) distributions; deduced scissors mode. Self-consistent cranked Nilsson plus quasiparticle RPA approach.
doi: 10.1103/PhysRevC.73.034302
2004AN25 Yad.Fiz. 67, 1861 (2004); Phys.Atomic Nuclei 67, 1834 (2004) F.Andreozzi, N.Lo Iudice, A.Porrino An Importance Sampling Algorithm for Diagonalizing the Nuclear Shell-Model Hamiltonian NUCLEAR STRUCTURE 48Cr, 108Sn; calculated level energies, B(E2). Shell model, iterative importance sampling algorithm.
doi: 10.1134/1.1811187
2004KV02 Phys.Rev. C 69, 064308 (2004) J.Kvasil, N.Lo Iudice, R.G.Nazmitdinov, A.Porrino, F.Knapp Collective magnetic excitations and backbending in fast rotating nuclei NUCLEAR STRUCTURE 156Dy, 158Er; calculated deformation vs spin, electromagnetic strength functions, collective magnetic dipole excitations, rotational band backbending features. Cranked Nilsson plus RPA approach.
doi: 10.1103/PhysRevC.69.064308
2003AN25 J.Phys.(London) G29, 2319 (2003) F.Andreozzi, N.Lo Iudice, A.Porrino An importance sampling algorithm for generating exact eigenstates of the nuclear Hamiltonian NUCLEAR STRUCTURE 48Cr, 108Sn, 133Xe; calculated levels, J, π, B(E2). Importance sampling algorithm.
doi: 10.1088/0954-3899/29/10/302
2001AN08 J.Phys.(London) G27, 845 (2001) A Redundancy-Free Approach to the use of Correlated Bases in the Truncation of Large Shell-Model Eigenproblems NUCLEAR STRUCTURE 132Te, 132I; calculated levels, J, π, configurations. Truncated shell model, correlated bases. Comparison with data.
doi: 10.1088/0954-3899/27/4/309
1999AN05 Phys.Rev. C59, 746 (1999) F.Andreozzi, L.Coraggio, A.Covello, A.Gargano, T.T.S.Kuo, A.Porrino Proton Particle-Neutron Hole States in 132Sb with a Realistic Interaction NUCLEAR STRUCTURE 132Sb; calculated levels, J, π, B(M1), B(E2); deduced effective neutron-proton interaction. Shell model. Comparison with data.
doi: 10.1103/PhysRevC.59.746
1997AN10 Phys.Rev. C56, R16 (1997); Comment Phys.Rev. C59, 546 (1999) F.Andreozzi, L.Coraggio, A.Covello, A.Gargano, T.T.S.Kuo, A.Porrino Structure of Neutron-Rich Nuclei Around 132Sn NUCLEAR STRUCTURE 134Te; calculated levels, B(λ), binding energies, g, μ. 135I calculated levels, binding energies. Shell model, realistic effective interaction.
doi: 10.1103/PhysRevC.56.R16
1996AN11 Z.Phys. A354, 253 (1996) F.Andreozzi, L.Coraggio, A.Covello, A.Gargano, A.Porrino Pairing Effects in Sn Isotopes NUCLEAR STRUCTURE 112,114,116,118,120,122,124Sn; calculated ground state occupation numbers, level spectra. 107,109,111,113,115,117,119,121,123,125,127,129Sn; calculated level spectra, one-nucleon transfer spectroscopic factors.
doi: 10.1007/s002180050042
1996AN17 Phys.Rev. C54, 1636 (1996) F.Andreozzi, L.Coraggio, A.Covello, A.Gargano, T.T.S.Kuo, Z.B.Li, A.Porrino Realistic Shell-Model Calculations for Neutron Deficient Sn Isotopes NUCLEAR STRUCTURE 102,103,104,105Sn; calculated levels. Realistic interactions, shell model.
doi: 10.1103/PhysRevC.54.1636
1992AN02 Phys.Rev. C45, 2008 (1992) F.Andreozzi, A.Covello, A.Gargano, A.Porrino Pairing and High-Spin States in Proton-Rich N = 82 Nuclei NUCLEAR STRUCTURE A=146-154; analyzed level data; deduced proton pairing correlations role.
doi: 10.1103/PhysRevC.45.2008
1990AN01 Phys.Rev. C41, 250 (1990) F.Andreozzi, A.Covello, A.Gargano, A.Porrino Pairing Effects in N = 82 Isotones NUCLEAR STRUCTURE A=136-150; calculated levels, spectroscopic factors. Equations-of-motion method, pairing-force theory.
doi: 10.1103/PhysRevC.41.250
1990CO23 Phys.Scr. T32, 7 (1990) A.Covello, F.Andreozzi, A.Gargano, A.Porrino Pairing and Seniority in an Equations-of-Motion Approach to Nuclear Structure Theory NUCLEAR STRUCTURE 113,115Sn; calculated levels. Other Sn isotopes studied. Equation of motion, seniority, pairing.
doi: 10.1088/0031-8949/1990/T32/001
1988AN04 Phys.Rev. C37, 2228 (1988) F.Andreozzi, A.Covello, A.Gargano, A.Porrino Equations-of-Motion Treatment of Pairing Correlations: Seniority-one states NUCLEAR STRUCTURE 111,115,119Sn; calculated levels, spectroscopic factors. Equations-of-motion method, pairing-force theory.
doi: 10.1103/PhysRevC.37.2228
1980AN03 Phys.Rev. C21, 1094 (1980) F.Andreozzi, A.Covello, A.Porrino Equations-of-Motion Method and Pairing Correlations in Doubly Even Nuclei NUCLEAR STRUCTURE 58,60,62,64,66Ni; calculated ground state energies, occupation numbers, two-particle transfer amplitudes. Equations of motion method, pairing correlations.
doi: 10.1103/PhysRevC.21.1094
1980AN26 Phys.Rev. C22, 2555 (1980) F.Andreozzi, A.Covello, A.Porrino Equations-of-Motion Method and Pairing Correlations in Odd-A Nuclei NUCLEAR STRUCTURE 59,61,63,65,67Ni; calculated levels, S, single-particle occupation probabilities. Equations of motion method, pairing-force theory.
doi: 10.1103/PhysRevC.22.2555
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