Nuclear Science References (NSR)

NUCLEAR REACTIONS ¹H(⁵⁶Ca, 2p)⁵⁵K, (⁵⁶Ca, np)⁵⁵Ca, E=250 MeV/nucleon; ¹H(⁵⁸Sc, 2p)⁵⁷Ca, E not given, [secondary ⁵⁶Ca and ⁵⁸Sc beams from ⁹Be(⁷⁰Zn, X), E=345 MeV/nucleon, followed by selection of fragments of interest using the BigRIPS separator through the TOF-ΔE-Bρ method at RIBF-RIKEN facility]; measured reaction products using the by SAMURAI magnetic spectrometer, protons, Eγ, Iγ, (proton)γ-coin using thick liquid hydrogen target system MINOS and DALI2² array of 226 NaI(Tl) scintillator detectors. ⁵⁵K, ^55,57Ca; deduced levels, J, π, level half-lives, exclusive population σ, spectroscopic factors, short-lived state in ⁵⁷Ca. Comparison with state-of-the-art theoretical calculations using different approaches such as large-scale shell model (LSSM), valence-space in-medium similarity renormalization group (VS-IMSRG), full-space self-consistent Green's function (SCGF) with NNLO_sat and NN+3N(lnl) interactions.

doi: 10.1016/j.physletb.2022.136953
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2022MA04 Phys.Rev.Lett. 128, 022502 (2022)

S.Malbrunot-Ettenauer, S.Kaufmann, S.Bacca, C.Barbieri, J.Billowes, M.L.Bissell, K.Blaum, B.Cheal, T.Duguet, R.F.Garcia Ruiz, W.Gins, C.Gorges, G.Hagen, H.Heylen, J.D.Holt, G.R.Jansen, A.Kanellakopoulos, M.Kortelainen, T.Miyagi, P.Navratil, W.Nazarewicz, R.Neugart, G.Neyens, W.Nortershauser, S.J.Novario, T.Papenbrock, T.Ratajczyk, P.-G.Reinhard, L.V.Rodriguez, R.Sanchez, S.Sailer, A.Schwenk, J.Simonis, V.Soma, S.R.Stroberg, L.Wehner, C.Wraith, L.Xie, Z.Y.Xu, X.F.Yang, D.T.Yordanov

Nuclear Charge Radii of the Nickel Isotopes ^{58-68, 70}Ni

NUCLEAR MOMENTS ^{58,59,60,61,62,63,64,65,66,67,68}Ni, ⁷⁰Ni; measured frequency-time spectrum; deduced isotope shifts, mean-square charge radii. Comparison with ab initio approaches. Collinear laser spectroscopy beam line COLLAPS, ISOLDE/CERN.

doi: 10.1103/PhysRevLett.128.022502
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2021AU02 Prog.Part.Nucl.Phys. 118, 103847 (2021)

T.Aumann, C.Barbieri, D.Bazin, C.A.Bertulani, A.Bonaccorso, W.H.Dickhoff, A.Gade, M.Gomez-Ramos, B.P.Kay, A.M.Moro, T.Nakamura, A.Obertelli, K.Ogata, S.Paschalis, T.Uesaka

Quenching of single-particle strength from direct reactions with stable and rare-isotope beams

doi: 10.1016/j.ppnp.2021.103847
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2021BE33 Phys.Rev. C 104, L061602 (2021)

C.A.Bertulani, A.Idini, C.Barbieri

Examination of the sensitivity of quasifree reactions to details of the bound-state overlap functions

NUCLEAR REACTIONS ⁹Be(¹⁴O, X), (¹⁶O, X), (²²O, X), (²⁴O, X), E=350 MeV/nucleon; analyzed separation energies, root mean square radii of the overlap wave function, asymptotic normalization coefficients, (p, pN) quasifree cross sections, and nucleon knockout cross sections, tail of the overlap functions, probability of removing a proton from ²⁴O, using potential models in the experimental analysis of knockout reactions, and ab initio computations from self-consistent Green's function theory.

doi: 10.1103/PhysRevC.104.L061602
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2021LI58 Phys.Rev. C 104, 044331 (2021)

B.D.Linh, A.Corsi, A.Gillibert, A.Obertelli, P.Doornenbal, C.Barbieri, S.Chen, L.X.Chung, T.Duguet, M.Gomez-Ramos, J.D.Holt, A.Moro, P.Navratil, K.Ogata, N.T.T.Phuc, N.Shimizu, V.Soma, Y.Utsuno, N.L.Achouri, H.Baba, F.Browne, D.Calvet, F.Chateau, N.Chiga, M.L.Cortes, A.Delbart, J.-M.Gheller, A.Giganon, C.Hilaire, T.Isobe, T.Kobayashi, Y.Kubota, V.Lapoux, H.N.Liu, T.Motobayashi, I.Murray, H.Otsu, V.Panin, N.Paul, W.Rodriguez, H.Sakurai, M.Sasano, D.Steppenbeck, L.Stuhl, Y.L.Sun, Y.Togano, T.Uesaka, K.Wimmer, K.Yoneda, O.Aktas, T.Aumann, F.Flavigny, S.Franchoo, I.Gasparic, R.-B.Gerst, J.Gibelin, K.I.Hahn, N.T.Khai, D.Kim, T.Koiwai, Y.Kondo, P.Koseoglou, J.Lee, C.Lehr, T.Lokotko, M.MacCormick, K.Moschner, T.Nakamura, S.Y.Park, D.Rossi, E.Sahin, D.Sohler, P.-A.Soderstrom, S.Takeuchi, N.D.Ton, H.Tornqvist, V.Vaquero, V.Wagner, H.Wang, V.Werner, X.Xu, Y.Yamada, D.Yan, Z.Yang, M.Yasuda, L.Zanetti

Investigation of the ground-state spin inversion in the neutron-rich ^{47, 49}Cl isotopes

NUCLEAR REACTIONS ¹H(⁵⁰Ar, 2p)⁴⁹Cl, (⁵⁰Ar, 2n2p)⁴⁷Cl; ¹H(⁵²K, n3p)⁴⁹Cl; ¹H(⁴⁸Cl, np)⁴⁷Cl, [secondary ion beams from ⁹Be(⁷⁰Zn, X), E=345 MeV/nucleon primary reaction at RIBF-RIKEN facility, followed by separation of ions by BigRIPS separator using Bπ-ΔE-TOF measurement and MINOS hydrogen target system]; measured reaction products, A/Q versus Z plot, scattered ions of ⁴⁷Cl and ⁴⁹Cl using the SAMURAI spectrometer and identified by A/Q and Z, Eγ, Iγ, γγ-coin using DALI2+ array of 226 NaI(Tl) detectors. ^47,49Cl; deduced levels, J and π for ⁴⁹Cl, parallel and transverse momentum distributions and L-transfers for ⁴⁹Cl, inclusive cross sections. Comparison of experimental level structure with shell-model calculations using SDPF-MU interactions, and IMSRG calculation. Comparison of momentum distributions with distorted-wave impulse approximation (DWIA), and transfer to continuum (TC) methods. Comparison of inclusive cross sections with LISE++ theoretical calculations. ⁴⁹Cl; calculated levels, J, π, T_1/2 of levels, B(E2), B(M1) using SDFP-MU shell-model. ^45,47,49Cl; calculated levels, J, π, spectroscopic factors using shell-model and ab initio approaches. ^41,43,45,47Cl; spin inversion issue not settled. Comparison of experimental and theoretical (from CGF) energy difference between the first 1/2+ and 3/2+ states in ^{35,36,37,38,39,40,41,43,45,47,49,51,53}Cl, ^{37,38,39,40,41,43,45,47,49,51,53,55}K.

doi: 10.1103/PhysRevC.104.044331
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2021MA52 Phys.Rev. C 104, 024315 (2021)

F.Marino, C.Barbieri, A.Carbone, G.Colo, A.Lovato, F.Pederiva, X.Roca-Maza, E.Vigezzi

Nuclear energy density functionals grounded in ab initio calculations

NUCLEAR STRUCTURE ¹⁶O, ³⁴Si, ³⁶S, ^36,40,48,52Ca, ⁹⁰Zr, ¹³²Sn, ²⁰⁸Pb; calculated energies per nucleon and charge radii by ab initio computation of equations of state (EoSs) of symmetric nuclear and pure neutron matter using the chiral NNLO_sat-based nuclear energy density functional (EDF), and the phenomenological AV4+UIX_c Hamiltonians. Comparison with experimental data. Discussed practical and systematic way to merge ab initio nuclear theory and density functional theory.

doi: 10.1103/PhysRevC.104.024315
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2021SO14 Eur.Phys.J. A 57, 135 (2021)

V.Soma, C.Barbieri, T.Duguet, P.Navratil

Moving away from singly-magic nuclei with Gorkov Green's function theory

NUCLEAR STRUCTURE Z=18-24; calculated binding and two-neutron separation energies, one- and two-proton separation energies, two-neutron shell gaps, root mean square charge radii within the Gorkov self-consistent Green's function approach at second order and make use of two state-of-the-art two- plus three-nucleon Hamiltonians. Comparison with available data.

doi: 10.1140/epja/s10050-021-00437-4
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2020AR13 Phys.Rev.Lett. 125, 182501 (2020)

P.Arthuis, C.Barbieri, M.Vorabbi, P.Finelli

Ab Initio Computation of Charge Densities for Sn and Xe Isotopes

NUCLEAR STRUCTURE ^100,132Sn, ^132,136,138Xe; calculated charge density distributions, neutron skins using self-consistent Green's function theory. Comparison with available data.

doi: 10.1103/PhysRevLett.125.182501
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2020BA11 Eur.Phys.J. A 56, 8 (2020)

C.Barbieri, O.S.Salafia, A.Perego, M.Colpi, G.Ghirlanda

Electromagnetic counterparts of black hole-neutron star mergers: dependence on the neutron star properties

doi: 10.1140/epja/s10050-019-00013-x
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2020MO25 Phys.Rev. C 102, 014301 (2020)

M.Mougeot, D.Atanasov, C.Barbieri, K.Blaum, M.Breitenfeld, A.de Roubin, T.Duguet, S.George, F.Herfurth, A.Herlert, J.D.Holt, J.Karthein, D.Lunney, V.Manea, P.Navratil, D.Neidherr, M.Rosenbusch, L.Schweikhard, A.Schwenk, V.Soma, A.Welker, F.Wienholtz, R.N.Wolf, K.Zuber

Examining the N=28 shell closure through high-precision mass measurements of ^46-48Ar

ATOMIC MASSES ^46,47,48Ar; measured Ramsey-type time-of-flight ion-cyclotron-resonances (TOF-ICR), mass excesses using the ISOLTRAP Penning trap mass spectrometer at CERN-ISOLDE. Comparison with previous experimental results, and with AME2016 and AME2012 evaluations. Radioactive argon isotopes produced in U(p, F), E=1.4 GeV reaction, and separated using ISOLTRAP on-line mass spectrometer and the ISOLDE High-Resolution Separator (HRS). Comparison with ab initio calculations using the valence space in-medium similarity renormalization group (VS-IMSRG) with self-consistent Green's function approach, and with the predictions from the UNEDF0 density functional, SDPF-U shell model. Systematics of S(2n) and pairing gaps in N=24-32 S, Cl, Ar, K, and Ca isotopes.

doi: 10.1103/PhysRevC.102.014301
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2020SA38 J.Phys.(London) G47, 085107 (2020)

G.Salvioni, J.Dobaczewski, C.Barbieri, G.Carlsson, A.Idini, A.Pastore

Model nuclear energy density functionals derived from ab initio calculations

NUCLEAR STRUCTURE ^16,24O, ³⁴Si, ³⁶S, ^40,48Ca, ⁵⁶Ni; calculated binding energies using ab initio approach. Comparison with available data.

doi: 10.1088/1361-6471/ab8d8e
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2020SO01 Phys.Rev. C 101, 014318 (2020)

V.Soma, P.Navratil, F.Raimondi, C.Barbieri, T.Duguet

Novel chiral Hamiltonian and observables in light and medium-mass nuclei

NUCLEAR STRUCTURE ³H, ^3,4,6,8He, ^6,7,9Li, ^7,8,9,10Be, ^10,11B, ^12,13,14C, ¹⁴N, ^14,16O, ³⁶Ca, ⁶⁸Ni; calculated ground-state energies. ^6,7,9Li, ^8,9Be, ^10,11B, ^12,13C; calculated levels, J, π. ^{12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28}O, ^{34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,70}Ca, ^{48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78}Ni; calculated total binding energies, S(2n), rms charge radii. ¹⁶O, ⁴⁰Ca, ⁵⁸Ni; calculated charge density distribution. ^47,49,53,55Ca, ⁵³K, ⁵⁵Sc; calculated levels, J, π populated in one-neutron removal and addition from and to ⁴⁸Ca and ⁵⁴Ca. ^{37,39,41,43,45,47,49,51,53,55}K; calculated energies of the first excited states. ¹⁶O, ³⁶Ca, ⁵⁶Ni; calculated binding energies. ¹⁸O, ⁵²Ca, ⁶⁴Ni; calculated rms charge radii. ³⁹K, ^49,53Ca; calculated one-nucleon separation energies. ^16,22,24O, ^{36,40,48,52,54,60}Ca, ^48,56,68Ni; calculated binding energy per particle for doubly closed-shell nuclei. State-of-the-art no-core shell model and self-consistent Green's function approaches with NN+3N(lnl) interaction, and with comparisons made with NNLO_sat and NN+3N(400) interactions, and with experimental data.

doi: 10.1103/PhysRevC.101.014318
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2020SU06 Phys.Lett. B 802, 135215 (2020)

Y.L.Sun, A.Obertelli, P.Doornenbal, C.Barbieri, Y.Chazono, T.Duguet, H.N.Liu, P.Navratil, F.Nowacki, K.Ogata, T.Otsuka, F.Raimondi, V.Soma, Y.Utsuno, K.Yoshida, N.Achouri, H.Baba, F.Browne, D.Calvet, F.Chateau, S.Chen, N.Chiga, A.Corsi, M.L.Cortes, A.Delbart, J.-M.Gheller, A.Giganon, A.Gillibert, C.Hilaire, T.Isobe, T.Kobayashi, Y.Kubota, V.Lapoux, T.Motobayashi, I.Murray, H.Otsu, V.Panin, N.Paul, W.Rodriguez, H.Sakurai, M.Sasano, D.Steppenbeck, L.Stuhl, Y.Togano, T.Uesaka, K.Wimmer, K.Yoneda, O.Aktas, T.Aumann, L.X.Chung, F.Flavigny, S.Franchoo, I.Gasparic, R.-B.Gerst, J.Gibelin, K.I.Hahn, D.Kim, T.Koiwai, Y.Kondo, P.Koseoglou, J.Lee, C.Lehr, B.D.Linh, T.Lokotko, M.MacCormick, K.Moschner, T.Nakamura, S.Y.Park, D.Rossi, E.Sahin, D.Sohler, P.-A.Soderstrom, S.Takeuchi, H.Tornqvist, V.Vaquero, V.Wagner, S.Wang, V.Werner, X.Xu, H.Yamada, D.Yan, Z.Yang, M.Yasuda, L.Zanetti

Restoration of the natural E(1/2⁺₁)-E(3/2⁺₁) energy splitting in odd-K isotopes towards N = 40

NUCLEAR REACTIONS ^52,54Ca(p, 2p)⁵¹K/⁵³K, E ∼ 250 MeV/nucleon; measured reaction products, Eγ, Iγ; deduced γ-ray energies, J, π, partial σ. Comparison with ab initio and shell-model calculations with improved phenomenological effective interactions.

doi: 10.1016/j.physletb.2020.135215
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2019BA50 Phys.Rev. C 100, 062501 (2019)

C.Barbieri, N.Rocco, V.Soma

Lepton scattering from ⁴⁰Ar and ⁴⁸Ti in the quasielastic peak region

NUCLEAR STRUCTURE ⁴⁰Ar, ⁴⁰Ca, ⁴⁸Ti; calculated radii and charge density distributions, neutron and proton spectral function using the ab initio self-consistent Green's function (SCGF) theory with saturating chiral interactions. Comparison with experimental data.

NUCLEAR REACTIONS ⁴⁰Ar, ⁴⁸Ti(e, e'), E=2.2 GeV; ¹²C, ⁴⁰Ar, ⁴⁸Ti(ν, ν), (ν, μ^-), E=1.0 GeV; calculated inclusive differential σ for electron scattering, and double differential quasielastic neutral and charged current cross sections for muon neutrino scattering, using the calculated spectral functions. Comparison with experimental data from Jefferson Lab. Relevance to long-based neutrino oscillations experiments.

doi: 10.1103/PhysRevC.100.062501
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2019CH43 Phys.Rev.Lett. 123, 142501 (2019)

S.Chen, J.Lee, P.Doornenbal, A.Obertelli, C.Barbieri, Y.Chazono, P.Navratil, K.Ogata, T.Otsuka, F.Raimondi, V.Soma, Y.Utsuno, K.Yoshida, H.Baba, F.Browne, D.Calvet, F.Chateau, N.Chiga, A.Corsi, M.L.Cortes, A.Delbart, J.-M.Gheller, A.Giganon, A.Gillibert, C.Hilaire, T.Isobe, J.Kahlbow, T.Kobayashi, Y.Kubota, V.Lapoux, H.N.Liu, T.Motobayashi, I.Murray, H.Otsu, V.Panin, N.Paul, W.Rodriguez, H.Sakurai, M.Sasano, D.Steppenbeck, L.Stuhl, Y.L.Sun, Y.Togano, T.Uesaka, K.Wimmer, K.Yoneda, N.Achouri, O.Aktas, T.Aumann, L.X.Chung, F.Flavigny, S.Franchoo, I.Gasparic, R.-B.Gerst, J.Gibelin, K.I.Hahn, D.Kim, T.Koiwai, Y.Kondo, P.Koseoglou, C.Lehr, B.D.Linh, T.Lokotko, M.MacCormick, K.Moschner, T.Nakamura, S.Y.Park, D.Rossi, E.Sahin, D.Sohler, P.-A.Soderstrom, S.Takeuchi, H.Tornqvist, V.Vaquero, V.Wagner, S.Wang, V.Werner, X.Xu, H.Yamada, D.Yan, Z.Yang, M.Yasuda, L.Zanetti

Quasifree Neutron Knockout from ⁵⁴Ca Corroborates Arising N=34 Neutron Magic Number

NUCLEAR REACTIONS ¹H(⁵⁴Ca, X)⁵³Ca, E=216 MeV/nucleon; measured reaction products, Eγ, Iγ; deduced γ-ray energies, exclusive σ, inclusive parallel momentum distributions. Comparison with theoretical calculations.

doi: 10.1103/PhysRevLett.123.142501
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2019ID01 Phys.Rev.Lett. 123, 092501 (2019)

A.Idini, C.Barbieri, P.Navratil

Ab Initio Optical Potentials and Nucleon Scattering on Medium Mass Nuclei

NUCLEAR REACTIONS ¹⁶O, ⁴⁰Ca(n, n), E<30 MeV; calculated σ, σ(θ); deduced ab initiooptical potentials from self-consistent Green's function theory.

doi: 10.1103/PhysRevLett.123.092501
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2019RA12 Phys.Rev. C 99, 054327 (2019)

F.Raimondi, C.Barbieri

Nuclear electromagnetic dipole response with the self-consistent Green's function formalism

NUCLEAR REACTIONS ^14,16,22,24O, ^{36,40,48,52,54,70}Ca, ⁶⁸Ni(γ, X), E^*=0-70 MeV; calculated integrated isovector E1 photoabsorption σ(E), isovector dipole polarizabilities, and isovector dipole response function, excitation energies of pygmy dipole resonances (PDR) and giant dipole resonance (GDR) for ⁶⁸Ni, integrated E1 strength of ¹⁶O above the GDR. self-consistent Green's function (SCGF) formalism, with the single-particle propagator obtained by solving the Dyson equation, and the particle-hole (ph) polarization propagator treated in the dressed random phase approximation (DRPA). Comparison with experimental data.

doi: 10.1103/PhysRevC.99.054327
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2019RA20 Phys.Rev. C 100, 024317 (2019)

F.Raimondi, C.Barbieri

Core-polarization effects and effective charges in O and Ni isotopes from chiral interactions

NUCLEAR STRUCTURE ^14,16,22,24O, ^48,56,68,78Ni; calculated isoscalar E2 effective charges for the 0p1s0d and 1p0f0g_9/2 valence spaces, core-polarization effects, quasiparticle energies, point-neutron and point-proton intrinsic radii. Ab initio approach through microscopic theory within the self-consistent Green's function (SCGF) formalism.

doi: 10.1103/PhysRevC.100.024317
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2019RO06 Phys.Rev. C 99, 025502 (2019)

N.Rocco, C.Barbieri, O.Benhar, A.De Pace, A.Lovato

Neutrino-nucleus cross section within the extended factorization scheme

NUCLEAR REACTIONS ¹²C, ¹⁶O(ν, X), (ν-bar, X), E=1 GeV muon neutrinos; calculated scattering differential σ(θ), and total σ using extended factorization scheme based on the impulse approximation and spectral function formalism by including relativistic meson-exchange two-body currents (MEC) relevant for charged-current (CC) and neutral-current (NC) interactions. Relevance to experimental data from MiniBooNE Collaboration, and future generation experiments.

doi: 10.1103/PhysRevC.99.025502
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2018LE03 Phys.Rev.Lett. 120, 062503 (2018)

E.Leistenschneider, M.P.Reiter, S.Ayet San Andres, B.Kootte, J.D.Holt, P.Navratil, C.Babcock, C.Barbieri, B.R.Barquest, J.Bergmann, J.Bollig, T.Brunner, E.Dunling, A.Finlay, H.Geissel, L.Graham, F.Greiner, H.Hergert, C.Hornung, C.Jesch, R.Klawitter, Y.Lan, D.Lascar, K.G.Leach, W.Lippert, J.E.McKay, S.F.Paul, A.Schwenk, D.Short, J.Simonis, V.Soma, R.Steinbrugge, S.R.Stroberg, R.Thompson, M.E.Wieser, C.Will, M.Yavor, C.Andreoiu, T.Dickel, I.Dillmann, G.Gwinner, W.R.Plass, C.Scheidenberger, A.A.Kwiatkowski, J.Dilling

Dawning of the N=32 Shell Closure Seen through Precision Mass Measurements of Neutron-Rich Titanium Isotopes

ATOMIC MASSES ⁵¹V, ^{51,52,53,54,55}Ti, ^52,53,54,55Cr; measured radio frequencies, TOF; deduced mass excesses. Comparison with the AME16 recommended values.

doi: 10.1103/PhysRevLett.120.062503
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2018MC02 Phys.Rev. C 97, 021303 (2018)

C.Mcilroy, C.Barbieri, T.Inoue, T.Doi, T.Hatsuda

Doubly magic nuclei from lattice QCD forces at M_PS = 469 MeV/C²

NUCLEAR STRUCTURE ⁴He, ¹⁶O, ⁴⁰Ca; calculated ground-state energies as functions of harmonic oscillator frequency, model space size and effective box radius, matter and charge radii, single-particle spectral strength distribution of ¹⁶O. Self-consistent calculations with HAL469 QCD potentials in the algebraic diagrammatic construction (ADC) approach. Use of Bethe-Goldstone equation (BGE) in ab initio approach. Comparison with experimental data.

doi: 10.1103/PhysRevC.97.021303
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2018RA06 Phys.Rev. C 97, 054308 (2018)

F.Raimondi, C.Barbieri

Algebraic diagrammatic construction formalism with three-body interactions

doi: 10.1103/PhysRevC.97.054308
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2018RO21 Phys.Rev. C 98, 025501 (2018)

N.Rocco, C.Barbieri

Inclusive electron-nucleus cross section within the self-consistent Green's function approach

NUCLEAR STRUCTURE ⁴He, ¹⁶O; calculated charge form factors, point-proton densities, charge densities, and single-nucleon momentum distributions by ab initio self-consistent Green's function approach (SCGF) approach for single-particle propagators using a METROPOLIS Monte Carlo algorithm.

NUCLEAR REACTIONS ⁴He(e, X), E=300, 500, 600, 730, 961 MeV; ¹⁶O(e, X), E=737, 880, 1080, 1200 MeV; calculated double-differential σ(E, θ) using the SCGF-ADC(3) propagator, and compared with experimental data.

doi: 10.1103/PhysRevC.98.025501
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2017DU03 Phys.Rev. C 95, 034319 (2017)

T.Duguet, V.Soma, S.Lecluse, C.Barbieri, P.Navratil

Ab initio calculation of the potential bubble nucleus ³⁴Si

NUCLEAR STRUCTURE ³⁴Si, ³⁶S; calculated ground-state energies, rms charge radii, point-proton, point-neutron, matter and charge rms radii, point-proton and point-neutron density distributions, proton and neutron natural orbital occupations, point-proton depletion factor, angular dependence of form factor in (e, e') at 300 MeV, one-nucleon addition and removal spectral strength distributions and associated effective single-particle energies, reduction of 1/2- to 3/2- spin-orbit splitting, and effective single-particle energies within the ADC(1), ADC(2) and ADC(3) approximations. ³⁵Si, ³⁷S, ³³Al, ³⁵P; calculated low-lying levels, J, π from one-neutron addition via (d, p) reaction and via one-proton knock-out reactions. ³⁴Si, ³⁶S; reduction of 1/2- to 3/2- spin-orbit splitting, effective single-particle energies. Semibubble or bubble structures. Performed ab initio self-consistent Green's function many-body calculations with a combination of two-nucleon (2N) and three-nucleon (3N) interactions obtained by chiral effective field theory (χEFT) at next-to-next-to leading order (N²LO). Comparison with available experimental data.

doi: 10.1103/PhysRevC.95.034319
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2017ID03 Acta Phys.Pol. B48, 273 (2017)

A.Idini, C.Barbieri, P.Navratil

Ab Initio Optical Potentials and Nucleon Scattering on Medium Mass Nuclei

NUCLEAR REACTIONS ⁴⁰Ca(n, n), E(cm)=13.56 MeV; calculated σ(θ) using newly constructed ab initio optical potential. Compared to data.

doi: 10.5506/APhysPolB.48.273
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2016LA16 Phys.Rev.Lett. 117, 052501 (2016)

V.Lapoux, V.Soma, C.Barbieri, H.Hergert, J.D.Holt, S.R.Stroberg

Radii and Binding Energies in Oxygen Isotopes: A Challenge for Nuclear Forces

NUCLEAR STRUCTURE ^{14,15,16,17,18,19,20,21,22,23,24}O; analyzed available data; calculated proton and neutron radii, binding energies. ab initio calculations with conventional nuclear interactions derived within chiral effective field theory.

doi: 10.1103/PhysRevLett.117.052501
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2016MA64 Eur.Phys.J. A 52, 298 (2016)

M.Makek, P.Achenbach, C.Ayerbe Gayoso, C.Barbieri, J.C.Bernauer, R.Bohm, D.Bosnar, A.Denig, M.O.Distler, I.Friscic, C.Giusti, H.Merkel, U.Muller, L.Nungesser, J.Pochodzalla, S.Sanches Majos, B.S.Schlimme, M.Schwamb, Th.Walcher, for the A1 Collaboration

Differential cross section measurement of the ¹²C(e, e'pp)¹⁰Be_g.s. reaction

NUCLEAR REACTIONS ¹²C(e, e'pp)¹⁰Be_gs, E=163 MeV; measured Ep, Ip using Si detectors and Ie, Ip using high-resolution magnetic spectrometers, pp-coin, ep-coin; deduced σ(E, θ). ¹⁰Be deduced excitation energy spectrum after triple coin; calculated σ(E, θ) using Pavia reaction code.

doi: 10.1140/epja/i2016-16298-3
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2015CI05 Phys.Rev. C 92, 014306 (2015)

A.Cipollone, C.Barbieri, P.Navratil

Chiral three-nucleon forces and the evolution of correlations along the oxygen isotopic chain

NUCLEAR STRUCTURE ^{15,17,23,25,29}F, ^{15,17,21,23,25,27}O; calculated levels, J, π for the addition and removal of a proton or neutron to/from closed-subshell oxygen isotopes of ^{14,16,22,24,28}O, spin-orbit splittings, spectroscopic factors, energy evolution of dominant proton and neutron quasiparticle fragments, energy gaps between the dominant 5/2+ and 1/2- quasiparticles. ^{14,16,18,20,22,24,26,28}O; calculated binding energies, matter and charge radii. ^{13,15,17,19,21,23,25,27}N, ^{15,17,19,21,23,25,27,29}F; calculated binding energies. Self-consistent Green's function (SCGF) theory using Dyson-ADC(3) method and Gorkov-SCGF formalism based on based on chiral NN + 3N interactions. Comparison with available experimental data.

doi: 10.1103/PhysRevC.92.014306
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2015RO10 Phys.Rev.Lett. 114, 202501 (2015)

M.Rosenbusch, P.Ascher, D.Atanasov, C.Barbieri, D.Beck, K.Blaum, Ch.Borgmann, M.Breitenfeldt, R.B.Cakirli, A.Cipollone, S.George, F.Herfurth, M.Kowalska, S.Kreim, D.Lunney, V.Manea, P.Navratil, D.Neidherr, L.Schweikhard, V.Soma, J.Stanja, F.Wienholtz, R.N.Wolf, K.Zuber

Probing the N=32 Shell Closure below the Magic Proton Number Z=20: Mass Measurements of the Exotic Isotopes ^{52, 53}K

ATOMIC MASSES ^52,53K; measured time-of-flight spectra for nuclides; deduced masses. Comparison with Skyrme-Hartree-Fock-Bogoliubov and ab initio Gorkov-Green function calculations.

doi: 10.1103/PhysRevLett.114.202501
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2014PA45 Phys.Rev. C 90, 034321 (2014)

J.Papuga, M.L.Bissell, K.Kreim, C.Barbieri, K.Blaum, M.De Rydt, T.Duguet, R.F.Garcia Ruiz, H.Heylen, M.Kowalska, R.Neugart, G.Neyens, W.Nortershauser, M.M.Rajabali, R.Sanchez, N.Smirnova, V.Soma, D.T.Yordanov

Shell structure of potassium isotopes deduced from their magnetic moments

NUCLEAR MOMENTS ^{38,38m,39,42,44,46,47,48,49,50,51}K; measured hyperfine structure using high-resolution collinear laser spectroscope COLLAPS and Paul trap ISCOOL at ISOLDE-CERN; deduced J, magnetic moments, configurations, magnetic hyperfine parameters. Potassium isotopes produced in U(p, X), E=1 GeV at ISOLDE-CERN. ^{38,40,41,42,43,44,45,46,47,48,49,51}K; deduced hyperfine structure anomalies. Comparison with shell model calculations using SDPF-NR and SDPF-U effective interactions, and with previous experimental results.

doi: 10.1103/PhysRevC.90.034321
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2014SA46 Phys.Lett. B 736, 137 (2014)

A.Sanetullaev, M.B.Tsang, W.G.Lynch, Jenny Lee, D.Bazin, K.P.Chan, D.Coupland, V.Henzl, D.Henzlova, M.Kilburn, A.M.Rogers, Z.Y.Sun, M.Youngs, R.J.Charity, L.G.Sobotka, M.Famiano, S.Hudan, D.Shapira, W.A.Peters, C.Barbieri, M.Hjorth-Jensen, M.Horoi, T.Otsuka, T.Suzuki, Y.Utsuno

Neutron spectroscopic factors of ⁵⁵Ni hole-states from image transfer reactions

NUCLEAR REACTIONS ¹H(⁵⁶Ni, d), E=37 MeV/nucleon; measured reaction products; deduced spectroscopic factors, J, π, σ(θ). Comparison with shell model calculations.

doi: 10.1016/j.physletb.2014.07.003
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2014SO02 Phys.Rev. C 89, 024323 (2014)

V.Soma, C.Barbieri, T.Duguet

Ab initio self-consistent Gorkov-Green's function calculations of semi-magic nuclei: Numerical implementation at second order with a two-nucleon interaction

NUCLEAR STRUCTURE ⁴He, ¹²C, ²⁰O, ⁴⁴Ca; calculated binding energies. ⁴⁰Ti; calculated neutron and proton effective single-particle energies, one-neutron addition and removal strength distribution. ⁴¹Ti; calculated density of 1/2+ states in as a function of their excitation energy. Self-consistent Gorkov-Green function theory with multi-pivot Lanczos algorithm and Krylov projection techniques.

doi: 10.1103/PhysRevC.89.024323
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2014SO09 Phys.Rev. C 89, 061301 (2014)

V.Soma, A.Cipollone, C.Barbieri, P.Navratil, T.Duguet

Chiral two- and three-nucleon forces along medium-mass isotope chains

NUCLEAR STRUCTURE ⁵¹K; calculated binding energy. ^{36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52}Ca; calculated ground-state energies, S(2n). ^{36,38,40,42,44,46,48,50}Ar, ^{37,39,41,43,45,47,49,51}K, ^{39,41,43,45,47,49,51,53}Sc, ^{40,42,44,46,48,50,52,54}Ti; calculated S(2n). Ab initio calculations using Gorkov-Green's function approach for open-shell nuclei. Chiral two- and three-nucleon interactions. Comparison with other theoretical calculations, and with experimental data from AME-2012.

doi: 10.1103/PhysRevC.89.061301
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2013CA24 Phys.Rev. C 88, 054326 (2013)

A.Carbone, A.Cipollone, C.Barbieri, A.Rios, A.Polls

Self-consistent Green's functions formalism with three-body interactions

doi: 10.1103/PhysRevC.88.054326
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2013CI04 Phys.Rev.Lett. 111, 062501 (2013)

A.Cipollone, C.Barbieri, P.Navratil

Isotopic Chains Around Oxygen from Evolved Chiral Two- and Three-Nucleon Interactions

NUCLEAR STRUCTURE ^{13,15,21,23,27}N, ^{14,16,22,24,28}O, ^{15,17,23,25,29}F; calculated ground state energies, binding energies, evolution of single-particle energies. Self-consistent Green function theory, comparison with available data.

doi: 10.1103/PhysRevLett.111.062501
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2013FL01 Phys.Rev.Lett. 110, 122503 (2013)

F.Flavigny, A.Gillibert, L.Nalpas, A.Obertelli, N.Keeley, C.Barbieri, D.Beaumel, S.Boissinot, G.Burgunder, A.Cipollone, A.Corsi, J.Gibelin, S.Giron, J.Guillot, F.Hammache, V.Lapoux, A.Matta, E.C.Pollacco, R.Raabe, M.Rejmund, N.de Sereville, A.Shrivastava, A.Signoracci, Y.Utsuno

Limited Asymmetry Dependence of Correlations from Single Nucleon Transfer

NUCLEAR REACTIONS ²H(¹⁴O, t), (¹⁴O, ³He), E=17.8 MeV/nucleon; measured reaction products; deduced σ(θ) for transfer and elastic scattering, reduction factors. Comparison with shell model and ab initio calculations.

doi: 10.1103/PhysRevLett.110.122503
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2013SO03 Phys.Rev. C 87, 011303 (2013)

V.Soma, C.Barbieri, T.Duguet

Ab initio Gorkov-Green's function calculations of open-shell nuclei

NUCLEAR STRUCTURE ⁴⁴Ca, ⁷⁴Ni; calculated binding energy, neutron pairing gap, matter RMS radius, neutron addition and neutron removal spectral strength distributions to states in ^43,45Ca, ^73,75Ni. Z=20, N=36-52; calculated binding energies of Ca isotopes. The ab initio self-consistent Gorkov-Green's function theory.

doi: 10.1103/PhysRevC.87.011303
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2012SO11 J.Phys.:Conf.Ser. 337, 012001 (2012)

V.Soma, T.Duguet, C.Barbieri

Self-consistent Gorkov Green's function calculations of one-nucleon spectral properties

NUCLEAR STRUCTURE ^40,44Ca; calculated neutron spectral strength distributions using self-consistent Gorkov Green's function.

doi: 10.1088/1742-6596/337/1/012001
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2011AV01 J.Phys.(London) G38, 025104 (2011)

M.Avgoulea, Yu.P.Gangrsky, K.P.Marinova, S.G.Zemlyanoi, S.Fritzsche, D.Iablonskyi, C.Barbieri, E.C.Simpson, P.D.Stevenson, J.Billowes, P.Campbell, B.Cheal, B.Tordoff, M.L.Bissell, D.H.Forest, M.D.Gardner, G.Tungate, J.Huikari, A.Nieminen, H.Penttila, J.Aysto

Nuclear charge radii and electromagnetic moments of radioactive scandium isotopes and isomers

NUCLEAR MOMENTS ^{42,43,44,45,46}Sc; measured hyperfine structure; deduced nuclear magnetic dipole moments and electric quadrupole moments, isotope shifts, charge radii, deformation. Shell model calculation, laser spectroscopy.

NUCLEAR STRUCTURE ^{42,43,44,45,46}Sc, ^{40,41,42,43,44,45,46,47,48}Ca; calculated nuclear isomer shifts, radii, magnetic moment, spectroscopic quadrupole moments. Comparison with other data.

doi: 10.1088/0954-3899/38/2/025104
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2011SO32 Phys.Rev. C 84, 064317 (2011)

V.Soma, T.Duguet, C.Barbieri

Ab initio self-consistent Gorkov-Green's function calculations of semimagic nuclei: Formalism at second order with a two-nucleon interaction

doi: 10.1103/PhysRevC.84.064317
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2011WA24 Phys.Rev. C 84, 034616 (2011)

S.J.Waldecker, C.Barbieri, W.H.Dickhoff

Microscopic self-energy calculations and dispersive optical-model potentials

NUCLEAR STRUCTURE ^40,48,60Ca; calculated nucleon self energies, volume integrals, angular momentum dependence for the volume integrals, asymmetry dependence of the absorption for neutrons and protons. Dispersive optical model (DOM), and Faddeev-random-phase approximation (FRPA) method.

doi: 10.1103/PhysRevC.84.034616
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2010BA36 Nucl.Phys. A834, 788c (2010)

C.Barbieri, R.J.Charity, W.H.Dickhoff, L.G.Sobotka

Toward a Global Dispersive Optical Model for the Driplines

NUCLEAR REACTIONS ⁴⁰Ca(n, n), E=9-185 MeV; ⁴⁰Ca(p, p), E=17.6-200 MeV; ^42,44Ca(p, p), E=21-65 MeV; ⁴⁸Ca(p, p), E=8-200 MeV; calculated σ(θ), analyzing power. ^40,48Ca calculated levels, J, widths, radii, spectroscopic factors; deduced dispersive optical model parameters. ^58,60,62,64Ni(p, p), E not given; calculated σ(θ). Comparison with data.

doi: 10.1016/j.nuclphysa.2010.01.147
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2010MI11 Eur.Phys.J. A 43, 137 (2010)

D.G.Middleton, J.R.M.Annand, C.Barbieri, C.Giusti, P.Grabmayr, T.Hehl, I.J.D.MacGregor, I.Martin, J.C.McGeorge, F.Moschini, F.D.Pacati, M.Schwamb, D.Watts

Knockout of proton-neutron pairs from ¹⁶O with electromagnetic probes

NUCLEAR REACTIONS ¹⁶O(e, e'np)¹⁴N, E=215 MeV; ¹⁶O(γ, pn)¹⁴N, E=100-800 MeV; measured reaction products; deduced σ. Comparison with Pavia model of two-nucleon knockout predictions.

doi: 10.1140/epja/i2009-10902-7
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2009BA29 Phys.Rev. C 79, 064313 (2009)

C.Barbieri, M.Hjorth-Jensen

Quasiparticle and quasihole states of nuclei around ⁵⁶Ni

NUCLEAR STRUCTURE ^55,56,57Ni, ⁵⁷Cu, ⁵⁵Co; calculated single-particle energies and spectroscopic factors using Faddeev random phase approximation and G matrix technique in the framework of self-consistent Green's function theory with N³LO interaction. Comparison with experimental data.

doi: 10.1103/PhysRevC.79.064313
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2009BA45 Phys.Rev.Lett. 103, 202502 (2009)

C.Barbieri

Role of Long-Range Correlations in the Quenching of Spectroscopic Factors

NUCLEAR STRUCTURE ⁵⁶Ni, ⁴⁸Ca; calculated spectroscopic factors; deduced particle-vibrating coupling. Shell model calculations, comparison with experiment.

doi: 10.1103/PhysRevLett.103.202502
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2008BA08 Phys.Rev. C 77, 024304 (2008)

C.Barbieri, E.Caurier, K.Langanke, G.Martinez-Pinedo

Pygmy dipole response of proton-rich argon nuclei in random-phase approximation and no-core shell model

NUCLEAR STRUCTURE ^32,34Ar; calculated B(E1), isovector dipole strength.particle transition energies. Investigated pygmy dipole resonances.

doi: 10.1103/PhysRevC.77.024304
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2008BA36 Phys.Rev. C 78, 039802 (2008)

C.Barbieri, E.Caurier, K.Langanke, G.Martinez-Pinedo

Reply to "Comment on `Pygmy dipole response of proton-rich argon nuclei in random-phase approximation and no-core shell model'"

doi: 10.1103/PhysRevC.78.039802
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2006BA61 Nucl.Phys. B(Proc.Supp.) S159, 174 (2006)

C.Barbieri

Final state interactions in electron scattering at high missing energies and momenta

NUCLEAR REACTIONS ¹²C(e, e'pX), E=high; calculated σ, final state interaction effects.

doi: 10.1016/j.nuclphysbps.2006.08.035
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2006MI22 Eur.Phys.J. A 29, 261 (2006); Erratum Eur.Phys.J. A 30, 469 (2006)

D.G.Middleton, J.R.M.Annand, C.Barbieri, P.Barneo, P.Bartsch, D.Baumann, J.Bermuth, D.Bosnar, H.P.Blok, R.Bohm, M.Ding, M.O.Distler, D.Elsner, J.Friedrich, C.Giusti, D.I.Glazier, P.Grabmayr, S.Grozinger, T.Hehl, J.Heim, W.H.A.Hesselink, E.Jans, F.Klein, M.Kohl, L.Lapikas, I.J.D.MacGregor, I.Martin, J.C.McGeorge, H.Merkel, P.Merle, F.Moschini, U.Muller, Th.Pospischil, G.Rosner, H.Schmieden, M.Seimetz, A.Sule, H.de Vries, Th.Walcher, D.P.Watts, M.Weis, B.Zihlmann

First measurements of the ¹⁶O(e, e'pn)¹⁴N reaction

NUCLEAR REACTIONS ²H, ¹⁶O(e, e'np), E=855 MeV; measured particle spectra. ¹⁴N deduced excited states.

doi: 10.1140/epja/i2005-10314-9
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2005BA07 Phys.Lett. B 608, 47 (2005)

C.Barbieri, D.Rohe, I.Sick, L.Lapikas

Effect of kinematics on final state interactions in (e, e'p) reactions

NUCLEAR REACTIONS ¹²C, ¹⁹⁷Au(e, e'p), E=high; calculated σ(E), final state interaction effects. Comparison of parallel and perpendicular kinematics.

doi: 10.1016/j.physletb.2004.12.072
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2005BA23 Eur.Phys.J. A 24, Supplement 1, 85 (2005)

C.Barbieri, L.Lapikas, D.Rohe

Two-step rescattering in (e, e'p) reactions

NUCLEAR REACTIONS ¹²C, ¹⁹⁷Au, ²⁰⁸Pb(e, e'p), E=461, 674 MeV; calculated spectral functions, two-step rescattering contributions. Semiclassical approach.

doi: 10.1140/epjad/s2005-05-015-9
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2005BA63 Phys.Rev. C 72, 014613 (2005)

C.Barbieri, B.K.Jennings

Nucleon-nucleus optical potential in the particle-hole approach

NUCLEAR REACTIONS ¹⁶O(p, X), E not given; calculated optical potential, phase shifts, related features. Self-consistent Green's function method.

NUCLEAR STRUCTURE ¹⁷F; calculated spectroscopic factors, radii.

doi: 10.1103/PhysRevC.72.014613
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2005BA66 J.Phys.(London) G31, S1301 (2005)

C.Barbieri, W.H.Dickhoff

Self-consistent Green's function calculations of ¹⁶O at small missing energies

NUCLEAR STRUCTURE ¹⁶O; calculated one-hole spectral function, level energies and configurations. Self-consistent Green's function approach.

doi: 10.1088/0954-3899/31/8/008
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2005BA81 Nucl.Phys. A758, 395c (2005)

C.Barbieri, B.K.Jennings

Study of the ¹⁶O(p, γ) Reaction at Astrophysical Energies

NUCLEAR REACTIONS ¹⁶O(p, γ), E(cm) ≈ 0-2 MeV; analyzed phase shifts, astrophysical S-factors.

doi: 10.1016/j.nuclphysa.2005.05.071
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2004BA61 Phys.Rev. C 70, 014606 (2004)

C.Barbieri, C.Giusti, F.D.Pacati, W.H.Dickhoff

Effects of nuclear correlations on the ¹⁶O(e, e'pN) reactions to discrete final states

NUCLEAR REACTIONS ¹⁶O(e, e'np), (e, e'2p), E=855 MeV; calculated σ(E, θ); deduced sensitivity to short-range and long-range correlations.

doi: 10.1103/PhysRevC.70.014606
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2004BA99 Phys.Rev. C 70, 054612 (2004)

C.Barbieri, L.Lapikas

Effects of rescattering in (e, e'p) reactions within a semiclassical model

NUCLEAR REACTIONS ¹²C, ¹⁹⁷Au, ²⁰⁸Pb(e, e'p), E=high; calculated reduced spectral strength, rescattering contribution to final state interactions.

doi: 10.1103/PhysRevC.70.054612
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2004BB15 Fizika(Zagreb) B 13, 185 (2004)

C.Barbieri, L.Lapikas, D.Rohe

Rescattering contributions to final state interactions in (e, e'p) reactions

NUCLEAR REACTIONS ¹²C(e, e'p), E=high; calculated spectral function, rescattering effects. Comparison with data.

2004DI08 Prog.Part.Nucl.Phys. 52, 377 (2004)

W.H.Dickhoff, C.Barbieri

Self-consistent Greens's function method for nuclei and nuclear matter

doi: 10.1016/j.ppnp.2004.02.038
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2003AL23 Phys.Rev. C 68, 024314 (2003)

J.Al-Khalili, C.Barbieri, J.Escher, B.K.Jennings, J.-M.Sparenberg

Many-body approach to proton emission and the role of spectroscopic factors

NUCLEAR STRUCTURE ¹⁷F; calculated overlap wave functions, proton decay width. Two-potential approach.

doi: 10.1103/PhysRevC.68.024314
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2003BA56 Phys.Rev. C 68, 014311 (2003)

C.Barbieri, W.H.Dickhoff

Extension of the random phase approximation including the self-consistent coupling to two-phonon contributions

NUCLEAR STRUCTURE ¹⁶O; calculated levels, J, π, configurations. Extended RPA, coupling to two particle-hole phonons.

doi: 10.1103/PhysRevC.68.014311
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2002BA59 Phys.Rev. C65, 064313 (2002)

C.Barbieri, W.H.Dickhoff

Faddeev Treatment of Long-Range Correlations and the One-Hole Spectral Function of ¹⁶O

NUCLEAR STRUCTURE ¹⁶O; calculated spectroscopic factors, one-hole spectral function, role of particle-particle and particle-hole phonons. Fadeev equations, iterative procedure.

doi: 10.1103/PhysRevC.65.064313
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2001BA15 Phys.Rev. C63, 034313 (2001)

C.Barbieri, W.H.Dickhoff

Faddeev Description of Two-Hole-One-Particle Motion and the Single-Particle Spectral Function

doi: 10.1103/PhysRevC.63.034313
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