NSR Query Results
Output year order : Descending NSR database version of April 27, 2024. Search: Author = G.De Gregorio Found 38 matches. 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
2024BR05 Nuovo Cim. C 47, 32 (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, for the NUMEN collaboration Elastic scattering angular distribution for the 18O+48Ti collision at 275 MeV within the NUMEN project NUCLEAR REACTIONS 48Ti(18O, 18O), E=275 MeV; measured reaction products; deduced σ(θ) using multichannel approach. The MAGNEX large acceptance magnetic spectrometer, K800 superconducting cyclotron of the INFN-LNS in Cat ania.
doi: 10.1393/ncc/i2024-24032-1
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
2024CI03 Nuovo Cim. C 47, 28 (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, for the NUMEN collaboration Investigation of 76Se(18O, 17O)75Se and 76Se(18O, 19F)75As transfer reactions at 15 MeV/u in a multi-channel approach within the NUMEN project NUCLEAR REACTIONS 76Se(18O, 17O)75Se, 76Se(18O, 19F)75As, 12C(18O, 19F)11B, E=15 MeV/nucleon; measured reaction products; deduced excitation energy spectrum one-nucleon transfer reactions. Comparison with the Distorted-Wave Born Approximation (DWBA) framework calculations. The MAGNEX scattering chamber, the Istituto Nazionale di Fisica Nucleare - Laboratori Nazionali del Sud (INFN-LNS) (Italy).
doi: 10.1393/ncc/i2024-24028-9
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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 TammDancoff phonons. Comparison with experimental data.
doi: 10.1103/PhysRevC.95.034327
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
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
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
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
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