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NSR database version of April 11, 2024.

Search: Author = G.De Gregorio

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2024BR01      Phys.Rev. C 109, 014604 (2024)

G.A.Brischetto, O.Sgouros, D.Carbone, F.Cappuzzello, M.Cavallaro, J.Lubian, G.De Gregorio, C.Agodi, D.Calvo, E.R.Chavez Lomeli, I.Ciraldo, F.Delaunay, H.Djapo, C.Eke, P.Finocchiaro, M.Fisichella, A.Gargano, M.A.Guazzelli, A.Hacisalihoglu, R.Linares, N.H.Medina, M.Moralles, J.R.B.Oliveira, A.Pakou, L.Pandola, V.Soukeras, G.Souliotis, A.Spatafora, D.Torresi, A.Yildirim, V.A.B.Zagatto

18O + 48Ti elastic and inelastic scattering at 275 MeV

doi: 10.1103/PhysRevC.109.014604
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2024CI02      Phys.Rev. C 109, 024615 (2024)

I.Ciraldo, F.Cappuzzello, M.Cavallaro, D.Carbone, A.Gargano, G.De Gregorio, H.Garcia-Tecocoatzi, E.Santopinto, R.I.Magana-Vsevolodovna, L.Acosta, C.Agodi, P.Amador-Valenzuela, G.A.Brischetto, S.Burrello, D.Calvo, E.R.Chavez Lomeli, M.Colonna, F.Delaunay, H.Djapo, C.Eke, P.Finocchiaro, S.Firat, M.Fisichella, M.A.Guazzelli, A.Hacisalihoglu, R.Linares, N.H.Medina, M.Moralles, J.R.B.Oliveira, A.Pakou, L.Pandola, H.Petrascu, F.Pinna, O.Sgouros, S.O.Solakci, V.Soukeras, G.Souliotis, A.Spatafora, D.Torresi, S.Tudisco, A.Yildirim, V.A.B.Zagatto

Analysis of one-proton transfer reaction in 18O+76Se collisions at 275 MeV

doi: 10.1103/PhysRevC.109.024615
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2024CO01      Phys.Rev. C 109, 014301 (2024)

L.Coraggio, N.Itaco, G.De Gregorio, A.Gargano, Z.H.Cheng, Y.Z.Ma, F.R.Xu, M.Viviani

The renormalization of the shell-model Gamow-Teller operator starting from effective field theory for nuclear systems

doi: 10.1103/PhysRevC.109.014301
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2023BO01      Phys.Rev. C 107, 014322 (2023)

S.Bottoni, E.R.Gamba, G.De Gregorio, A.Gargano, S.Leoni, B.Fornal, N.Brancadori, G.Ciconali, F.C.L.Crespi, N.Cieplicka-Orynczak, L.W.Iskra, G.Colombi, Y.H.Kim, U.Koster, C.Michelagnoli, F.Dunkel, A.Esmaylzadeh, L.Gerhard, J.Jolie, L.Knafla, M.Ley, J.-M.Regis, K.Schomaker, M.Sferrazza

Testing the predictive power of realistic shell model calculations via lifetime measurement of the 11/2+ state in 131Sb

NUCLEAR REACTIONS 235U(n, F)131Sb, E=thermal; measured fission fragments, Eγ, Iγ, γγ-coin, (fragment)γ-coin. 131Sb; deduced levels, J, π, T1/2 for transitions from excited states, B(E2). Lifetimes obtained with generalized centroid difference (GCD) method. Systematics of 2+ states energies in Sn isotopes compared with 11/2+ states in Sb isotopes. Comparison to realistic shell-model calculations performed with KSHELL code. LOHENGRIN spectrometer together with 2 HPGe and 5 LaBr3(Ce) detectors (ILL).

doi: 10.1103/PhysRevC.107.014322
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2023BY03      Phys.Rev. C 108, 024615 (2023)

P.Bydzovsky, D.Denisova, D.Petrellis, D.Skoupil, P.Vesely, G.De Gregorio, F.Knapp, N.Lo Iudice

Self-consistent many-body approach to the electroproduction of hypernuclei

NUCLEAR REACTIONS 12C(e, eK+)12B, 16O(e, eK+)16N, 40Ca(e, eK+)40K, 48Ca(e, eK+)48K, E*<31 MeV; calculated differential σ(θ) for hypernuclei electroproduction, excitation spectrum, σ of electroproduction for selected hypernucleus states. Microscopic self-consistent many-body mean field approach, known as Tamm-Dancoff for hypernuclei extended by equation of motion phonon method (EMPM). Comparison to available experimental data and empirical shell-model calculations. Relevance to the preparation of planned E12-15-008 experiment at JLab.

NUCLEAR STRUCTURE 12B, 16N, 28Al, 40K, 48K; calculated Λ binding energy for hypernuclei. 40K, 48K; calculated levels of hypernuclei, J, π, proton and Λ single particle states. Tamm-Dancoff formalism with the NF YNG interaction and elementary amplitudes - SLA and BS3.

doi: 10.1103/PhysRevC.108.024615
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2023CA02      Prog.Part.Nucl.Phys. 128, 103999 (2023)

F.Cappuzzello, H.Lenske, M.Cavallaro, C.Agodi, N.Auerbach, J.I.Bellone, R.Bijker, S.Burrello, S.Calabrese, D.Carbone, M.Colonna, G.De Gregorio, J.L.Ferreira, D.Gambacurta, H.Garcia-Tecocoatzi, A.Gargano, J.A.Lay, R.Linares, J.Lubian, E.Santopinto, O.Sgouros, V.Soukeras, A.Spatafora

Shedding light on nuclear aspects of neutrinoless double beta decay by heavy-ion double charge exchange reactions

doi: 10.1016/j.ppnp.2022.103999
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2023DE21      Phys.Rev. C 108, 024316 (2023)

G.De Gregorio, F.Knapp, P.Vesely, N.Lo Iudice

Survey of the 8He properties within a microscopic multiphonon approach

NUCLEAR STRUCTURE 8He; calculated levels, J, π, ground-state energy, proton and neutron radii, charge radii, proton and neutron single-particle energies, neutron and proton densities, B(E1) strength distribution, E1 isovector and isoscalar transition strengths, dipole polarizability, proton and neutron transition densities. Equation of motion phonon method (EMPM) which constructs and solves iteratively a set of equations of motion and yields states composed of an arbitrary number (n=2, 3, ...) of particle-hole (p-h) or two-quasiparticle Tamm-Dancoff (TD) phonons. Comparison to available experimental data.

NUCLEAR REACTIONS 8He(γ, X), E<40 MeV; calculated E1 σ(E).

doi: 10.1103/PhysRevC.108.024316
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2023KN01      Phys.Rev. C 107, 014305 (2023)

F.Knapp, P.Papakonstantinou, P.Vesely, G.De Gregorio, J.Herko, N.Lo Iudice

Comparative analysis of formalisms and performances of three different beyond-mean-field approaches

NUCLEAR STRUCTURE 40Ca; calculated E1 and E2 responses, B(E1) and B(E2) distributions. 16O, 40,48Ca; calculated isovector and isoscalar E1 (dipole) strength functions, E2 (quadrupole) strength functions, E3 (octupole) strength functions, monopole strength function, energy weighted running sums of strength functions. Calculations using equation of motion phonon method (EMPM), second Tamm-Dancoff and random-phase approximations (STDA and SRPA).

doi: 10.1103/PhysRevC.107.014305
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2023SG02      Phys.Rev. C 108, 044611 (2023)

O.Sgouros, M.Cutuli, F.Cappuzzello, M.Cavallaro, D.Carbone, C.Agodi, G.De Gregorio, A.Gargano, R.Linares, G.A.Brischetto, D.Calvo, E.R.Chavez Lomeli, I.Ciraldo, F.Delaunay, H.Djapo, C.Eke, P.Finocchiaro, M.Fisichella, M.A.Guazzelli, A.Hacisalihoglu, J.Lubian, N.H.Medina, M.Moralles, J.R.B.Oliveira, A.Pakou, L.Pandola, V.Soukeras, G.Souliotis, A.Spatafora, D.Torresi, A.Yildirim, V.A.B.Zagatto, for the NUMEN Collaboration)

One-neutron transfer reaction in the 18O + 48Ti collision at 275 MeV

doi: 10.1103/PhysRevC.108.044611
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2022CO04      Phys.Rev. C 105, 034312 (2022)

L.Coraggio, N.Itaco, G.De Gregorio, A.Gargano, R.Mancino, F.Nowacki

Shell-model calculation of 100Mo double -β decay

NUCLEAR STRUCTURE 100Mo; calculated neutron effective single-particle, proton and neutron single-particle energy spacings, running sum of B(GT) strength up to 3 MeV. 100Mo, 100Ru; calculated levels, J, π, B(E2). Effective shell-model Hamiltonian with realistic nucleon-nucleon potential. Comparison to experimental data.

RADIOACTIVITY 100Mo(2β-); calculated nuclear matrix elements for double β-decay and neutrinoless double β-decay to yrare and yrast 0+ states in 100Ru. Effective shell-model Hamiltonian with realistic nucleon-nucleon potential and decay operators derived within the many-body perturbation theory. Comparison to available experimental data and other theoretical predictions.

doi: 10.1103/PhysRevC.105.034312
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2022DE04      Phys.Rev. C 105, 024326 (2022)

G.De Gregorio, F.Knapp, N.Lo Iudice, P.Vesely

Spectroscopic properties of 4He within a multiphonon approach

NUCLEAR STRUCTURE 4He; calculated levels, J, π, charge radii, ground state energy, B(E1) distribution. Equation of motion phonon method (EMPM). Comparison to experimental data.

NUCLEAR REACTIONS 4He(γ, X), E=18-48 MeV; calculated σ of Giant Dipole Resonance excitation. Equation of motion phonon method (EMPM) calculations performed with up to 3 phonons. Comparison to experimental data.

doi: 10.1103/PhysRevC.105.024326
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2021CA28      Phys.Rev. C 104, 064609 (2021)

S.Calabrese, M.Cavallaro, D.Carbone, F.Cappuzzello, C.Agodi, S.Burrello, G.De Gregorio, J.L.Ferreira, A.Gargano, O.Sgouros, L.Acosta, P.Amador-Valenzuela, J.I.Bellone, T.Borello-Lewin, G.A.Brischetto, D.Calvo, V.Capirossi, E.R.Chavez Lomeli, I.Ciraldo, M.Colonna, F.Delaunay, H.Djapo, C.Eke, P.Finocchiaro, S.Firat, M.Fisichella, A.Foti, M.A.Guazzelli, A.Hacisalihoglu, F.Iazzi, L.La Fauci, J.A.Lay, R.Linares, J.Lubian, N.H.Medina, M.Moralles, J.R.B.Oliveira, A.Pakou, L.Pandola, H.Petrascu, F.Pinna, G.Russo, S.O.Solakci, V.Soukeras, G.Souliotis, A.Spatafora, D.Torresi, S.Tudisco, A.Yildirim, V.A.B.Zagatto

18O-induced single-nucleon transfer reactions on 40Ca at 15.3A MeV within a multichannel analysis

NUCLEAR REACTIONS 40Ca(18O, 17O)41Ca, E=15.3 MeV/nucleon; 40Ca(18O, 19F)39K, E=15.3 MeV/nucleon; measured reaction products, 17O and 19F ejectiles produced in one-neutron stripping and one-proton pickup reactions, excitation energy spectra, differential σ(θ) using MAGNEX magnetic spectrometer at the K800 Superconducting Cyclotron of INFN-LNS-Catania under NUMEN Collaboration. Comparison with theoretical calculations of σ(θ) distributions using distorted wave Born approximation (DWBA) and coupled channel Born approximation (CCBA) frameworks, with Sao Paulo optical potentials and shell model spectroscopic amplitudes. 17O, 19F, 41Ca, 39K; deduced excitation energies from one-neutron transfer reactions. 17O, 41Ca; 19F, 39K; calculated one-neutron spectroscopic amplitudes for 18O projectile and 40Ca target overlaps using shell-model with the p-sd-mod and ZBM2-modified interactions; coupling schemes for the projectile-ejectile and target-residual systems for the one-proton and one-neutron transfer used in the optical model (OM) + DWBA and CCBA calculations.

doi: 10.1103/PhysRevC.104.064609
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetD8042.


2021CO14      Phys.Rev. C 104, 054304 (2021)

L.Coraggio, G.De Gregorio, A.Gargano, N.Itaco, T.Fukui, Y.Z.Ma, F.R.Xu

Shell-model study of titanium isotopic chain with chiral two- and three-body forces

NUCLEAR STRUCTURE 42,44,46,48,50,52,54,56,58,60,62,64,66,68,70,72Ti; calculated S(2n) and compared with AME2020 values, energies of the first 2+ states and compared with experimental values, effective single-particle energies (ESPEs), neutron-neutron monopole matrix elements. Shell-model calculations with an effective Hamiltonian from many-body perturbation theory using 40Ca as a closed core, and three-body contributions through density-dependent two-body matrix elements (TBME) derived within a microscopic approach from chiral forces.

doi: 10.1103/PhysRevC.104.054304
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2021DE30      Phys.Lett. B 821, 136636 (2021)

G.De Gregorio, F.Knapp, N.Lo Iudice, P.Vesely

Removal of the center of mass in nuclei and its effects on 4He

NUCLEAR STRUCTURE 4He; calculated excitation energies, J, π, n-phonon compositions, B(E1) using an equation of motion method for solving the nuclear eigenvalue problem.

doi: 10.1016/j.physletb.2021.136636
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2021FU11      Few-Body Systems 62, 64 (2021)

T.Fukui, L.Coraggio, G.De Gregorio, A.Gargano, N.Itaco, Y.Ma, F.Xu

Realistic Shell Model with Chiral Interaction and Its Application to Drip-Line Predictions

NUCLEAR STRUCTURE 10B, 42,44,46,48,50,52,54,56,58,60,62,64,66,68,70Ca; calculated energy levels, J, π, two-neutron separation energy. Comparison with experimental data.

doi: 10.1007/s00601-021-01655-8
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2021KA19      Phys.Rev. C 103, 044309 (2021)

V.Karayonchev, M.Stoyanova, G.Rainovski, J.Jolie, A.Blazhev, M.Djongolov, A.Esmaylzadeh, C.Fransen, K.Gladnishki, L.Knafla, D.Kocheva, L.Kornwebel, J.-M.Regis, G.De Gregorio, A.Gargano

Lifetimes and structures of low-lying negative-parity states of 209Po

RADIOACTIVITY 209At(EC), (β+)[from successive α and ϵ decay of 213Fr, produced in 206Pb(11B, 4n)213Fr, E=56 MeV at the FN-Tandem facility of University of Cologne]; measured Eγ, Iγ, γγ-coin, level half-lives by γγ(t) fast-timing method and analyzed by generalized centroid difference (GCD) method using eight HPGe detectors and 12 LaBr scintillators, with six of these placed inside BGO anti-Compton shields. 209Po; deduced levels, J, π, B(M1), B(E2). Comparison with shell-model calculation using a microscopic effective interaction derived from the realistic CD-Bonn potential.

NUCLEAR STRUCTURE 209Po; calculated proton single-particle and neutron single-hole energies, levels, J, π, B(M1), B(E2), magnetic dipole and electric quadrupole moments, orbital composition and one-neutron pick-up spectroscopic factors of selected states, E2 matrix elements. Shell-model calculations with a realistic effective interaction derived from the CD-Bonn nucleon-nucleon potential within the framework of Q-box folded-diagram approach. Comparison with experimental data.

doi: 10.1103/PhysRevC.103.044309
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Data from this article have been entered in the XUNDL database. For more information, click here.


2021KA36      Phys.Rev. C 104, 024311 (2021)

D.Kalaydjieva, D.Kocheva, G.Rainovski, V.Karayonchev, J.Jolie, N.Pietralla, M.Beckers, A.Blazhev, A.Dewald, M.Djongolov, A.Esmaylzadeh, C.Fransen, K.A.Gladnishki, A.Goldkuhle, C.Henrich, I.Homm, K.E.Ide, P.R.John, R.Kern, J.Kleemann, Th.Kroll, C.Muller-Gatermann, M.Scheck, P.Spagnoletti, M.Stoyanova, K.Stoychev, V.Werner, A.Yaneva, S.S.Dimitrova, G.De Gregorio, H.Naidja, A.Gargano

Microscopic structure of the one-phonon 2+ states of 208Po

NUCLEAR REACTIONS 204Pb(12C, 8Be)208Po, E=62 MeV; measured Eγ, Iγ, (particle)γ-coin, half-lives of the first 2+ and 4+ levels by recoil-distance Doppler-shift (RDDS) method using the Cologne plunger device at the FN Tandem facility of the University of Cologne. 208Po; deduced levels, J, π, B(E2). Comparison with large-scale shell-model calculations.

NUCLEAR STRUCTURE 208Po; calculated levels, J, π, B(E2), B(M1), magnetic dipole and electric quadrupole moments using large-scale shell-model calculations with an effective interaction derived from the realistic CD-Bonn nucleon-nucleon potential. Comparison with experimental data.

doi: 10.1103/PhysRevC.104.024311
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Data from this article have been entered in the XUNDL database. For more information, click here.


2021LE11      Phys.Rev. C 104, 014302 (2021)

S.Lechner, Z.Y.Xu, M.L.Bissell, K.Blaum, B.Cheal, G.De Gregorio, C.S.Devlin, R.F.Garcia Ruiz, A.Gargano, H.Heylen, P.Imgram, A.Kanellakopoulos, A.Koszorus, S.Malbrunot-Ettenauer, R.Neugart, G.Neyens, W.Nortershauser, P.Plattner, L.V.Rodriguez, X.F.Yang, D.T.Yordanov

Probing the single-particle behavior above 132Sn via electromagnetic moments of 133, 134Sb and N=82 isotones

NUCLEAR MOMENTS 133,134mSb; measured hyperfine structure spectra of the 7/2+ ground state of 133Sb and the (7-) isomeric state of 134Sb using the collinear laser spectroscopy (COLLAPS) at the radioactive ion-beam facility ISOLDE-CERN; deduced hyperfine structure constants, spins, static magnetic dipole and electric quadrupole moments; discussed single-particle behavior of nuclides above the doubly magic nucleus 132Sn. Comparison with previous experimental results, and with shell-model calculations. 133,134Sb isotopes produced in U(p, X) reaction using UCx target, followed by separation of atomic antimony fragments by selective laser ionization, acceleration of ions to 50 keV, and finally mass separated by a magnetic separator and accumulated in a buffer-gas filled radio-frequency quadrupole cooler and buncher.

doi: 10.1103/PhysRevC.104.014302
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Data from this article have been entered in the XUNDL database. For more information, click here.


2021RO04      Phys.Rev. C 103, 014311 (2021)

M.Rocchini, K.Hadynska-Klek, A.Nannini, A.Goasduff, M.Zielinska, D.Testov, T.R.Rodriguez, A.Gargano, F.Nowacki, G.De Gregorio, H.Naidja, P.Sona, J.J.Valiente-Dobon, D.Mengoni, P.R.John, D.Bazzacco, G.Benzoni, A.Boso, P.Cocconi, M.Chiari, D.T.Doherty, F.Galtarossa, G.Jaworski, M.Komorowska, N.Marchini, M.Matejska-Minda, B.Melon, R.Menegazzo, P.J.Napiorkowski, D.Napoli, M.Ottanelli, A.Perego, L.Ramina, M.Rampazzo, F.Recchia, S.Riccetto, D.Rosso, M.Siciliano

Onset of triaxial deformation in 66Zn and properties of its first excited 0+ state studied by means of Coulomb excitation

NUCLEAR REACTIONS 208Pb(66Zn, 66Zn'), E=240 MeV from the XTU-Tandem accelerator of INFN-Legnaro; measured Eγ, Iγ, scattered 66Zn particles, (66Zn)γ-coin, γ-ray yields, γ(θ), (66Zn)γ(θ) in safe Coulomb excitation using GALILEO spectrometer for γ radiation, and SPIDER array for 66Zn particles. 66Zn; deduced levels, J, π, Coulomb excitation yields, reduced E2, E3, and M1 matrix elements using GOSIA least-squares fitting analysis, B(E2), B(E3), B(M1), spectroscopic quadrupole moments for the first and second 2+ and the first 4+ states, quadrupole shape invariants and deformation parameters; calculated collective wave function contours for selected states in 66Zn, and potential energy surfaces for 64,66,68,70Zn in (β2, γ) plane. Comparison with extensive beyond-mean-field (BMF) and large-scale shell-model calculations with a variety of model spaces and interactions, and with results of previous experimental results. Systematics of low-lying states in 62,64,66,68,70Zn.

doi: 10.1103/PhysRevC.103.014311
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Data from this article have been entered in the XUNDL database. For more information, click here.


2021TO09      Phys.Lett. B 821, 136603 (2021)

D.Tonev, G.de Angelis, I.Deloncle, N.Goutev, G.De Gregorio, P.Pavlov, I.L.Pantaleev, S.Iliev, M.S.Yavahchova, P.G.Bizzeti, A.Demerdjiev, D.T.Dimitrov, E.Farnea, A.Gadea, E.Geleva, C.Y.He, H.Laftchiev, S.M.Lenzi, S.Lunardi, N.Marginean, R.Menegazzo, D.R.Napoli, F.Nowacki, R.Orlandi, H.Penttila, F.Recchia, E.Sahin, R.P.Singh, M.Stoyanova, C.A.Ur, H.-F.Wirth

Transition probabilities in 31P and 31S: A test for isospin symmetry

NUCLEAR REACTIONS 20Ne(12C, p), (12C, n)31P/31S, E=33 MeV from Piave-Alpi accelerator of LNL-Legnaro; measured Eγ, Iγ, γγ-coin, (proton)γγ-coin, γγ(θ), level T1/2 by DSAM and line-shape analysis using GASP array for γ rays and EUCLIDES Si-ball for charged particles. 31S, 31P; deduced levels, J, π, multipolarity, mixing ratios, B(E1), B(M2), violation of isospin symmetry for mirror nuclei. Comparison with Self-consistent beyond mean field calculations using Equation of Motion method based on a chiral potential, and with previous experimental data.

doi: 10.1016/j.physletb.2021.136603
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Data from this article have been entered in the XUNDL database. For more information, click here.


2020CO10      Phys.Rev. C 102, 054326 (2020)

L.Coraggio, G.De Gregorio, A.Gargano, N.Itaco, T.Fukui, Y.Z.Ma, F.R.Xu

Shell-model study of calcium isotopes toward their drip line

NUCLEAR STRUCTURE 50Ca; calculated low-lying levels, J, π. 42,44,46,48,50,52,54,56,58,60,62,64,66,68,70Ca; calculated S(2n), energies of first 2+ states. 49Ca; calculated negative-parity, low-spin energy levels. Shell model calculations with two- and three-nucleon potentials derived within the chiral perturbation theory. Calculated two-body matrix elements given in Supplemental material. Comparison with experimental data.

doi: 10.1103/PhysRevC.102.054326
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2020CO16      Universe 6, 233 (2020)

L.Coraggio, N.Itaco, G.De Gregorio, A.Gargano, R.Mancino, S.Pastore

Present Status of Nuclear Shell-Model Calculations of 0νββ Decay Matrix Elements

doi: 10.3390/universe6120233
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2020DE03      Phys.Rev. C 101, 024308 (2020)

G.De Gregorio, F.Knapp, N.Lo Iudice, P.Vesely

Proper treatment of the Pauli principle in mirror nuclei within the microscopic particle(hole)-phonon scheme

NUCLEAR STRUCTURE 15,17O, 15N, 17F, 39Ca, 39K; calculated levels, J, π, magnetic dipole and electric quadrupole moments, log ft values for β decays, B(M1), B(E1), B(E2), B(E3) using the space spanned by states composed of a particle (hole) coupled to Tamm-Dancoff approximation (TDA) phonons with NNLOsat chiral potential, and with and without the proton-neutron potential. Comparison with experimental data.

doi: 10.1103/PhysRevC.101.024308
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2020PO04      Acta Phys.Pol. B51, 617 (2020)

J.Pokorny, G.De Gregorio, F.Knapp, N.Lo Iudice, P.Vesely

Effect of Λ Particle Phonon Coupling on the Energy Spectra of 5ΛHe and 17ΛO*

doi: 10.5506/APhysPolB.51.617
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2020RO19      Phys.Rev. C 102, 051301(R) (2020)

L.V.Rodriguez, D.L.Balabanski, M.L.Bissell, K.Blaum, B.Cheal, G.De Gregorio, J.Ekman, R.F.Garcia Ruiz, A.Gargano, G.Georgiev, W.Gins, C.Gorges, H.Heylen, A.Kanellakopoulos, S.Kaufmann, V.Lagaki, S.Lechner, B.Maass, S.Malbrunot-Ettenauer, R.Neugart, G.Neyens, W.Nortershauser, S.Sailer, R.Sanchez, S.Schmidt, L.Wehner, C.Wraith, L.Xie, Z.Y.Xu, X.F.Yang, D.T.Yordanov

Doubly-magic character of 132Sn studied via electromagnetic moments of 133Sn

NUCLEAR MOMENTS 133Sn; measured hyperfine structure spectra, magnetic dipole moment (μ) and electric quadrupole moment (Q) using high-resolution collinear laser spectroscopy at ISOLDE-CERN facility; deduced 1f7/2 neutron orbital configuration for 133Sn g.s., and doubly-magic character of 132Sn. 133Sn activity produced in fission of a uranium carbide target by neutrons from spallation reaction on tungsten by high-energy protons, followed by laser ionization and mass selection through a linear Paul trap. Systematics of magnetic dipole moments (μ) and electric quadrupole moments (Q) for N=83 isotones: 133Sn, 135Te, 137Xe, 139Ba, 141Ce, 143Nd, 145Sm, 147Gd and 149Dy. Comparison with shell-model calculations.

doi: 10.1103/PhysRevC.102.051301
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Data from this article have been entered in the XUNDL database. For more information, click here.


2019DE02      Phys.Rev. C 99, 014316 (2019)

G.De Gregorio, F.Knapp, N.Lo Iudice, P.Vesely

Microscopic multiphonon approach to nuclei with a valence hole in the oxygen region

NUCLEAR STRUCTURE 15,16,21,22O, 15,21N; calculated levels, J, π, B(E1), B(M1), B(E2), B(E3), magnetic moments, β-decay logft values, and pygmy and giant dipole resonance (GDR) cross sections, and Phonon composition of selected states using microscopic multiphonon equation of motion method (EMPM) for odd nuclei with a valence hole. Comparison with experimental data.

RADIOACTIVITY 21N(β-); calculated logft and B(GT) using microscopic multiphonon equation of motion method (EMPM). Comparison with available experimental data.

doi: 10.1103/PhysRevC.99.014316
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2019VE01      Phys.Scr. 94, 014006 (2019)

P.Vesely, G.De Gregorio, J.Pokorny

Effect of a realistic three-body force on the spectra of medium-mass hypernuclei

NUCLEAR STRUCTURE 16,17O, 40,41Ca; calculated single-particle energies, radial density distributions, charge radii for regular and hypernuclei using NNN force.

doi: 10.1088/1402-4896/aaecfa
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2018DE11      Phys.Rev. C 97, 034311 (2018)

G.De Gregorio, F.Knapp, N.Lo Iudice, P.Vesely

Microscopic multiphonon approach to spectroscopy in the neutron-rich oxygen region

NUCLEAR STRUCTURE 22,23O, 23F; calculated levels, J, π, phonon composition of the low-lying states, weights of two-phonon components, E1 reduced strength distributions, E1 cross section, transition densities for low-lying 1- states, isoscalar versus isovector B(E1), Hartree-Fock levels for 23O and 23F. Equation of motion phonon method (EMPM), Tamm-Dancoff approximation (TDA), and Hartree-Fock method. Comparison with experimental data.

RADIOACTIVITY 23O(β-); calculated logft, B(GT) and B(F) strengths, using equation of motion phonon method (EMPM), Tamm-Dancoff approximation (TDA), and Hartree-Fock method. Comparison with experimental data.

doi: 10.1103/PhysRevC.97.034311
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2017DE07      Phys.Rev. C 95, 024306 (2017)

G.De Gregorio, J.Herko, F.Knapp, N.Lo Iudice, P.Vesely

Ground-state correlations within a nonperturbative approach

NUCLEAR STRUCTURE 4He, 16O, 40Ca; calculated ground-state energies, binding energies/nucleon, point proton radii, ground state correlations, two-phonon components of the ground state in 16O; investigated convergence properties versus the harmonic oscillator frequency and space dimensions. 4He, 16,24O, 34Si, 40,48Ca, 48,56,78Ni, 88Sr, 90Zr, 100,114,132Sn, 146Gd, 208Pb; calculated root-mean-square point proton radii, and compared with experimental values. Nonperturbative calculations using Hartree-Fock basis within an equation-of-motion phonon method with a nucleon-nucleon optimized chiral potential.

doi: 10.1103/PhysRevC.95.024306
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2017DE08      Phys.Rev. C 95, 034327 (2017)

G.De Gregorio, F.Knapp, N.Lo Iudice, P.Vesely

Low- and high-energy spectroscopy of 17O and 17F within a microscopic multiphonon approach

NUCLEAR STRUCTURE 17O, 17F; calculated complete set of levels, J, π, phonon amplitudes for selected states, B(E1), B(E2), quadrupole moments, magnetic dipole moments, log ft value for β decay of 17F ground-state. 16,17O, 17F; calculated cross sections for pygmy and giant dipole resonances. Microscopic multiphonon equation of motion method for odd nuclei, using TammDancoff phonons. Comparison with experimental data.

doi: 10.1103/PhysRevC.95.034327
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2017DE16      Phys.Scr. 92, 074003 (2017)

G.De Gregorio, F.Knapp, N.Lo Iudice, P.Vesely

A microscopic multiphonon approach to even and odd nuclei

NUCLEAR REACTIONS 132Sn, 208Pb, 16,17O, 17F(γ, X), E not given; calculated electric dipole σ. Comparison with experimental data.

doi: 10.1088/1402-4896/aa6fa2
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2016DE10      Phys.Rev. C 93, 044314 (2016)

G.De Gregorio, F.Knapp, N.Lo Iudice, P.Vesely

Self-consistent quasiparticle formulation of a multiphonon method and its application to the neutron-rich 20O nucleus

NUCLEAR STRUCTURE 20O; calculated energy levels, J, π, B(E2), B(E1), E1 cross section, pygmy and giant dipole resonances, 2-qp compositions of the first 2+ state, and two 1- TDA phonons. Bogoliubov quasiparticle formulation of an equation-of-motion multiphonon method (EMPM) with phonons obtained in Tamm-Dancoff approximation (TDA). Comparison with experimental values.

doi: 10.1103/PhysRevC.93.044314
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2016DE38      Phys.Rev. C 94, 061301 (2016)

G.De Gregorio, F.Knapp, N.Lo Iudice, P.Vesely

Microscopic multiphonon method for odd nuclei and its application to 17O

NUCLEAR STRUCTURE 17O; calculated energy levels, J, π, B(E2), electric quadrupole moment, magnetic dipole moment, pygmy and giant dipole resonance cross sections. New equation of motion phonon method for odd-A nuclei. Comparison with experimental data.

doi: 10.1103/PhysRevC.94.061301
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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
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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
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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
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