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NSR database version of May 21, 2024.

Search: Author = F.Andreozzi

Found 43 matches.

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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
Citations: PlumX Metrics


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
Citations: PlumX Metrics


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
Citations: PlumX Metrics


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
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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
Citations: PlumX Metrics


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
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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
Citations: PlumX Metrics


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
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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
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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
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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
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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
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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
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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
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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
Citations: PlumX Metrics


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
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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
Citations: PlumX Metrics


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
Citations: PlumX Metrics


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
Citations: PlumX Metrics


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
Citations: PlumX Metrics


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
Citations: PlumX Metrics


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
Citations: PlumX Metrics


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
Citations: PlumX Metrics


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
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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
Citations: PlumX Metrics


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
Citations: PlumX Metrics


2002KO53      Eur.Phys.J. A 15, 181 (2002)

A.Korgul, H.Mach, B.Fogelberg, W.Urban, W.Kurcewicz, T.Rzaca-Urban, P.Hoff, H.Gausemel, J.Galy, J.L.Durell, W.R.Phillips, A.G.Smith, B.J.Varley, N.Schulz, I.Ahmad, L.R.Morss, M.Gorska, V.I.Isakov, K.I.Erokhina, J.Blomqvist, F.Andreozzi, F.Coraggio, A.Covello, A.Gargano

The neutron and proton two-particle nucleus 134Sb: New low-spin states observed in the decay of 134Sn and an estimate of the energy of the 7- isomer

RADIOACTIVITY 134Sn(β-) [from 238U(n, F)]; measured Eγ, Iγ, γγ-, βγ-coin. 134Sb deduced levels, possible J, π, configurations. Mass separator. Comparisons with model predictions.

doi: 10.1140/epja/i2001-10250-8
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2001AN08      J.Phys.(London) G27, 845 (2001)

F.Andreozzi, A.Porrino

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
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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
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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
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1996AN10      Phys.Rev. C54, 684 (1996)

F.Andreozzi

Nonperturbative Derivation of Non-Hermitian and Hermitian Effective Interactions and Operators

doi: 10.1103/PhysRevC.54.684
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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
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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
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1993AN14      Nucl.Phys. A564, 441 (1993)

F.Andreozzi, A.Brondi, A.D'Onofrio, G.La Rana, R.Moro, E.Perillo, M.Romano, F.Terrasi, R.Dayras, H.Dumont, F.Gadi, J.Gomez del Campo

Reaction-Mechanism Evolution for the System 20Ne + 60Ni at Intermediate Energies: From massive transfer to fragmentation

NUCLEAR REACTIONS 60Ni(20Ne, X), E=1 GeV; measured residue mass, charge distributions, absolute σ, projected ranges. Enriched target. Geometrical model calculations.

doi: 10.1016/0375-9474(93)90514-X
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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
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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
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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
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1989DO01      Phys.Rev. C39, 834 (1989)

A.D'Onofrio, J.Gomez del Campo, B.Delaunay, J.Delaunay, H.Dumont, F.Andreozzi, A.Brondi, R.Moro, M.Romano, F.Terrasi

Preequilibrium Emission and Target-Projectile-Like Correlations for 20Ne + 60Ni at E(20Ne) = 740 MeV

NUCLEAR REACTIONS 60Ni(20Ne, X), E=740 MeV; measured (particle)γ-coin; deduced preequilibrium contributions.

doi: 10.1103/PhysRevC.39.834
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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
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1987DO01      Phys.Rev. C35, 1167 (1987)

A.D'Onofrio, B.Delaunay, J.Delaunay, H.Dumont, J.Gomez del Campo, F.Andreozzi, A.Brondi, R.Moro, M.Romano, F.Terrasi, J.F.Bruandet

Heavy Residue Masses as Possible Indicators of the Impact Parameter in the Reaction 20Ne + 60Ni at 742 MeV

NUCLEAR REACTIONS 60Ni(20Ne, X), E=746 MeV; measured fragment σ(Z, A); deduced residue mass-impact parameter correlation. Massive transfer, participant spectator models.

doi: 10.1103/PhysRevC.35.1167
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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
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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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1976AN12      Nucl.Phys. A270, 388 (1976)

F.Andreozzi, G.Sartoris

Effective Three-Body Interactions in the f7/2 Shell

NUCLEAR STRUCTURE 43Sc; calculated levels, contributions of effective three-body forces to the interaction energy of three particles in the 0f7/2 shell.

doi: 10.1016/0375-9474(76)90452-8
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