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NSR database version of April 11, 2024.

Search: Author = N.Keeley

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2024MA10      Phys.Rev. C 109, 034601 (2024)

H.M.Maridi, N.Keeley, K.Rusek

Simultaneous calculation of elastic scattering, fusion, and direct cross sections for reactions of weakly bound projectiles

doi: 10.1103/PhysRevC.109.034601
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2024MA11      Phys.Rev. C 109, 034605 (2024)

R.S.Mackintosh, N.Keeley

Stripping and pickup contributions to the optical potentials for 3H and 3He on 40Ca

doi: 10.1103/PhysRevC.109.034605
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2023KE03      Phys.Rev. C 107, 034602 (2023)

N.Keeley, R.S.Mackintosh

Reaction channel contributions to the triton + 208Pb optical potential

NUCLEAR REACTIONS 208Pb(t, α), (t, t), E=33 MeV; calculated σ(θ); deduced optical potential parameters, dynamical polarization potentials (DPP). Identified the influence of dynamically nonlocality due to various channel couplings. Comparison with 208Pb(3He, α), (3He, 3He') reactions. Coupled reaction channel (CRC) calculations.

doi: 10.1103/PhysRevC.107.034602
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2023KE12      Phys.Rev. C 108, 044603 (2023)

N.Keeley, I.Martel, K.W.Kemper, K.Rusek

Breakup and transfer reactions in the 17Ne + 208Pb system close to the Coulomb barrier

doi: 10.1103/PhysRevC.108.044603
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2023OV01      Phys.Lett. B 843, 138007 (2023)

J.D.Ovejas, I.Martel, D.Dell'Aquila, L.Acosta, J.L.Aguado, G.de Angelis, M.J.G.Borge, J.A.Briz, A.Chbihi, G.Colucci, C.Diaz-Martin, P.Figuera, D.Galaviz, C.Garcia-Ramos, J.A.Gomez-Galan, C.A.Gonzales, N.Goyal, N.Keeley, K.W.Kemper, T.Kurtukian Nieto, D.J.Malenica, M.Mazzocco, D.Nurkic, A.K.Orduz, A.Ortiz, L.Palada, C.Parascandolo, A.Di Pietro, A.M.Rodriguez, K.Rusek, F.Salguero, A.M.Sanchez-Benitez, M.Sanchez-Raya, J.Sanchez-Segovia, N.Soic, F.Soramel, M.Stanoiu, O.Tengblad, N.Vukman, M.Xarepe

Suppression of Coulomb-nuclear interference in the near-barrier elastic scattering of 17Ne from 208Pb

NUCLEAR REACTIONS 208Pb(17Ne, 17Ne), (17Ne, X)15O, E=136 MeV; measured reaction products. 17Ne; deduced σ, σ(θ) for elastic scattering and 15O inclusive production, optical model parameters, B(E2). Coupled channels analysis. Comparison with available data. The GLORIA detector array, the SPIRAL1 facility, GANIL.

doi: 10.1016/j.physletb.2023.138007
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2022GA33      Phys.Rev. C 106, 064307 (2022)

P.E.Garrett, M.Zielinska, A.Bergmaier, T.R.Rodriguez, D.Kalaydjieva, M.Siciliano, H.Bidaman, V.Bildstein, C.Burbadge, A.Diaz Varela, D.T.Doherty, T.Faestermann, K.Hadynska-Klek, R.Hertenberger, N.Keeley, A.Laffoley, A.D.MacLean, M.Mahgoub, A.J.Radich, M.Rocchini, P.Spagnoletti, S.Triambak, M.Vandebrouck, K.Wrzosek-Lipska

Coulomb excitation of 102Ru with 12C and 16O

NUCLEAR REACTIONS 102Ru(12C, 12C'), E=45, 53 MeV; 102Ru(16O, 16O'), E=56 MeV; measured reaction products, momentum of the scattered particles, angular distributions; deduced population of the excited states in 102Ru. 102Ru; deduced levels, J, π, B(E2), B(E3), E0 monopole transition strengths, transition matrix elements. GOSIA analysis of Coulomb excitation combined with FRESCO calculations. Comparison to calculations performed using the symmetry-conserving configuration-mixing (SCCM) method employing the Gogny-D1S energy-density functional. Systematics of experimentally obtained B(E3) values for Ru, Mo and Pd isotopes. Q3D magnetic spectrograph at at the Maier Leibnitz Laboratory.

doi: 10.1103/PhysRevC.106.064307
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Data from this article have been entered in the XUNDL database. For more information, click here.


2022KE03      Phys.Rev. C 106, 014623 (2022)

N.Keeley, K.W.Kemper, K.Rusek

Compatibility of the asymptotic normalization coefficient for the 14C → 13B + p overlap extracted from the 14C(11B, 12C)13B reaction with 14C(d, 3He)13B data

NUCLEAR REACTIONS 14C(d, 3He), E=52 MeV; analyzed data from 1975MA41; deduced σ, σ(θ) using asymptotic normalization coefficient extracted from analysis of 14C(11B, 12C) reaction. Coupled reaction channel (CRC) and distorted wave Born approximation (DWBA) analysis.

doi: 10.1103/PhysRevC.106.014623
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2022MA19      Eur.Phys.J. A 58, 49 (2022)

H.M.Maridi, K.Rusek, N.Keeley

Comparison of Coulomb breakup effects on the elastic scattering of 6He and 8He using a Coulomb dipole polarization potential

NUCLEAR REACTIONS 208Pb(6He, 6He), (8He, 8He), E=16 MeV; analyzed available data. 6,8He; calculated σ(θ), cluster structures using Coulomb dipole polarization potential (CDPP) and distorted wave Born approximation (DWBA).

doi: 10.1140/epja/s10050-022-00702-0
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2022MA55      Phys.Rev. C 106, 054611 (2022)

R.S.Mackintosh, N.Keeley

Reaction channel contributions to the proton + 208Pb optical potential at 40 MeV

NUCLEAR REACTIONS 208Pb(p, d), (p, p'), E=40 MeV; calculated σ(θ), analyzing power; deduced optical potential parameters, dynamical polarization potentials (DPP). Identified the influence of dynamically generated nonlocality due to various channel couplings. Coupled reaction channel (CRC) calculations.

doi: 10.1103/PhysRevC.106.054611
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2022MA56      Phys.Rev. C 106, 054613 (2022)

H.M.Maridi, K.Rusek, N.Keeley

Calculation of Coulomb breakup cross sections using a new Coulomb dynamical polarization potential

NUCLEAR REACTIONS Pb(11Be, X), E=520 MeV/nucleon; Pb(15C, X), E=605 MeV/nucleon; Pb(17C, X), E=496 MeV/nucleon; calculated Coulomb dissociation σ, σ(E) using single-particle and Whittaker functions for the bound-state wave functions. Eikonal approximation combined with a new Coulomb dynamical polarization potential taking into account excited states of the core and excitation to the continuum. Comparison to experimental results.

doi: 10.1103/PhysRevC.106.054613
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2022ME03      Phys.Rev. C 105, 024615 (2022)

S.Yu.Mezhevych, N.Keeley, A.T.Rudchik, K.Rusek, K.W.Kemper, A.A.Rudchik, O.A.Ponkratenko, E.I.Koshchy, S.B.Sakuta

Extracting the asymptotic normalization coefficient for the 14C → 13B + p overlap from the 14C(11B, 12C)13B reaction

NUCLEAR REACTIONS 14C(11B, 12C), (11B, 11B), E=45 MeV; analyzed σ, σ(θ); deduced asymptotic normalization coefficient for 14C and 13B+p overlap, spectroscopic factors. Coupled reaction channel (CRC) analysis.

doi: 10.1103/PhysRevC.105.024615
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2022RU05      Phys.Rev. C 106, 014615 (2022)

A.T.Rudchik, A.A.Rudchik, O.O.Chepurnov, K.W.Kemper, N.Keeley, K.Rusek, E.I.Koshchy, S.Kliczewski, S.Yu.Mezhevych, V.M.Pirnak, O.A.Ponkratenko, R.Siudak, H.M.Maridi, A.P.Ilyin, B.V.Mishchenko, Yu.M.Stepanenko, V.V.Uleshchenko, Yu.O.Shyrma, K.A.Chercas, B.Zalewski

Comparison of 10B + 6Li and 10B + 7Li elastic scattering: The role of ground state reorientation and breakup

NUCLEAR REACTIONS 6Li(10B, 10B), E=51 MeV; measured reaction products, angular distributions; deduced σ(θ), parameters of the optical model potentials, influence of the resonant states on the σ(E) of the α+d breakup. 7Li(10B, 10B), E=51 MeV; analyzed σ(E) and angular distributions from 2007RU13; deduced parameters of the optical model potentials, influence of the resonant states on the σ(E) of the α+t breakup. Comparison to coupled discretized continuum channel (CDCC) calculations. Setup consisting of solid state silicon detectors and gas-filled ionization chamber at U-200P cyclotron of the Heavy Ion Laboratory of the University of Warsaw.

doi: 10.1103/PhysRevC.106.014615
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Data from this article have been entered in the XUNDL database. For more information, click here.


2022SH03      Phys.Rev. C 105, 014605 (2022)

A.Shrivastava, K.Mahata, I.Stefan, M.Assie, P.Adsley, D.Beaumel, V.M.Datar, A.Georgiadou, J.Guillot, F.Hammache, N.Keeley, Y.H.Kim, A.Meyer, V.Nanal, V.V.Parkar, N.de Sereville

Occupation probabilities of valence orbitals relevant to neutrinoless double β decay of 124Sn

NUCLEAR REACTIONS 124Te, 124Sn(p, d)123Te/123Sn, E=22 MeV; 124Te, 124Sn(d, p)125Te/125Sn, E=15 MeV; 124Te, 124Sn(3He, α)123Te/123Sn, E=30 MeV; 124Te, 124Sn(α, 3He)125Te/125Sn, E=40 MeV; measured scattered particle spectra of deuterons, protons, 3He and α, σ(θ, E) by momentum analysis of particles by Enge Split Pole magnetic spectrometer, then focused on a focal-plane detection system of position-sensitive proportional and a plastic scintillator to identify particles via magnetic rigidity and energy-loss characteristics at the ALTO facility of IJCLab. 123,125Te, 123,125Sn; deduced levels, J, π, L-transfers, σ(θ), spectroscopic factors, configurations. DWBA analysis of σ(θ) distributions. 124Sn, 124Te; deduced neutron vacancies of active orbitals in their ground states, and compared with those in literature for 128,130Te, provision of nuclear matrix element (NMEs) for 0νββ decay mode of 124Sn. Relevance to ongoing efforts for the experiment TINTIN (The INdian TIN detector) at the India-based Neutrino Observatory (INO) to measure the neutrinoless double β decay of 124Sn. 123,125Te, 123,125Sn; detailed results for level energies, Jπ, σ(θ) and spectroscopic factors are supplied in an .excel file in the Supplemental Material of the paper.

doi: 10.1103/PhysRevC.105.014605
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Data from this article have been entered in the XUNDL database. For more information, click here.


2021AS05      Phys.Rev. C 103, 044615 (2021)

B.W.Asher, S.Almaraz-Calderon, V.Tripathi, K.W.Kemper, L.T.Baby, N.Gerken, E.Lopez-Saavedra, A.B.Morelock, J.F.Perello, I.Wiedenhover, N.Keeley

Experimental study of the 17F + 12C fusion reaction and its implications for fusion of proton-halo systems

NUCLEAR REACTIONS 12C(17F, X), E=69.1 MeV, [secondary 17F beam from 2H(16O, 17F), E=91.5 MeV primary reaction at the tandem Van de Graaff generator and LINAC accelerator of Florida State University (FSU)]; 12C(16O, X), E=58.1 MeV; 12C(19F, X), E=65 MeV; measured reaction products, total fusion σ using the Encore active-target detector, a multisampling ionization chamber recently developed at FSU; deduced no significant effect of the weak binding and the halo nature of the excited state in 17F on the total fusion cross sections. Comparison with previous experimental cross sections, and with coupled-channel calculations using FRESCO code.

doi: 10.1103/PhysRevC.103.044615
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2021AS09      Eur.Phys.J. A 57, 272 (2021)

B.W.Asher, S.Almaraz-Calderon, K.W.Kemper, L.T.Baby, E.Lopez-Saavedra, A.B.Morelock, J.F.Perello, V.Tripathi, N.Keeley

Resolution of a long-standing discrepancy in the 17O + 12C fusion excitation function

NUCLEAR REACTIONS 12C(17O, X), E(cm) = 14.3-20.5 MeV; measured reaction products; deduced total fusion σ and uncertainties, issues with the discrepant data.

doi: 10.1140/epja/s10050-021-00584-8
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2021KE07      Eur.Phys.J. A 57, 168 (2021)

N.Keeley, K.W.Kemper, K.Rusek

Influence of halo single-neutron transfer on near barrier 15C + 12C total fusion

NUCLEAR REACTIONS 12C(13C, X), (14C, X), (15C, X), (15C, 14C), E(cm)<20 MeV; analyzed available data; deduced single neutron transfer impact on the above barrier total fusion.

doi: 10.1140/epja/s10050-021-00476-x
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2021MA56      Phys.Rev. C 104, 024614 (2021)

H.M.Maridi, K.Rusek, N.Keeley

Coulomb dynamical polarization potential and the electric dipole polarizability for weakly bound and neutron-rich light nuclei

NUCLEAR REACTIONS 208Pb(6He, 6He), E=14 MeV; calculated real and imaginary parts of Coulomb dynamical polarization potential (CDPP) and compared with trivially equivalent local potential (TELP), σ(θ) using continuum-discretized coupled channels (CDCC) method and the optical model using CDPP. 208Pb(d, d), (6He, 6He), (7He, 7He), (8He, 8He), (9He, 9He), (6Li, 6Li), (7Li, 7Li), (8Li, 8Li), (9Li, 9Li), (10Li, 10Li), (11Li, 11Li), (12Li, 12Li), (13Li, 13Li), (9Be, 9Be), (10Be, 10Be), (11Be, 11Be), (12Be, 12Be), (13Be, 13Be), (14Be, 14Be), (15Be, 15Be), (16Be, 16Be), (12B, 12B), (14B, 14B), (15B, 15B), (16B, 16B), (17B, 17B), (18B, 18B), (19B, 19B), (15C, 15C), (17C, 17C), (19C, 19C), (22C, 22C), (18N, 18N), (20N, 20N), (22N, 22N), (23N, 23N), (26O, 26O), (26F, 26F), (27F, 27F), (28F, 28F), (29F, 29F), (27Ne, 27Ne), (29Ne, 29Ne), (31Ne, 31Ne), (34Na, 34Na), (35Mg, 35Mg), (37Mg, 37Mg), E near Coulomb barrier; calculated Coulomb dynamical polarization potential (CDPP); deduced dipole polarizabilities of weakly bound light nuclei. 1H, 4He, 12C, 64Zn, 120Sn, 208Pb(11Be, 11Be), E near Coulomb barrier; calculated dipole polarizabilities. Method involved solution of Schrodinger equation for the internal motion of the projectile incident on a heavy target nucleus, using the adiabatic approximation. Comparison with results from other theoretical methods.

doi: 10.1103/PhysRevC.104.024614
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2021MA69      Phys.Rev. C 104, 044616 (2021)

R.S.Mackintosh, N.Keeley

Reaction channel contributions to proton scattering at 65 MeV

NUCLEAR REACTIONS 40,48Ca(polarized p, p), (p, p), E=65 MeV; 40Ca(p, d)39Ca, E=65 MeV; calculated σ(θ), analyzing power iT11(θ); deduced optical potential parameters, dynamical polarization potentials (DPP) for elastic scattering and neutron pickup reaction; deduced that no smoothly varying global OMP could fit proton elastic scattering from both 40Ca and 48Ca, and that breakup of deuteron must be included in calculations of the DPP due to neutron pickup in proton scattering. Coupled reaction channel (CRC) calculations for neutron pickup and coupled channel (CC) calculations for collective states, with l-independent representation of the dynamical polarization potential (DPP).

doi: 10.1103/PhysRevC.104.044616
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2021PA33      Phys.Lett. B 820, 136570 (2021)

S.K.Pandit, A.Shrivastava, K.Mahata, N.Keeley, V.V.Parkar, R.Palit, P.C.Rout, K.Ramachandran, A.Kumar, S.Bhattacharyya, V.Nanal, S.Biswas, S.Saha, J.Sethi, P.Singh, S.Kailas

Unraveling the reaction mechanism for large alpha production and incomplete fusion in reactions involving weakly bound stable nuclei

NUCLEAR REACTIONS 93Nb(7Li, X)94Mo/95Mo/96Mo, E=24 MeV; measured reaction products, Eγ, Iγ, Eα, Iα; deduced σ(θ, E). Comparison with DWBA calculations. BARC-TIFR Pelletron-Linac facility, the Indian National Gamma Array (INGA).

doi: 10.1016/j.physletb.2021.136570
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetD6409.


2021RU06      Eur.Phys.J. A 57, 10 (2021)

K.Rusek, M.Mazzocco, N.Keeley, K.W.Kemper

Mechanism of the 144Sm(7Li, 6Li*3+)145Sm reaction at 30 MeV

NUCLEAR REACTIONS 144Sm(7Li, 7Li), (7Li, 6Li), E=30 MeV; analyzed available data; calculated σ(θ) using CCBA formalism.

doi: 10.1140/epja/s10050-020-00335-1
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2021RU08      Phys.Rev. C 103, 044614 (2021)

A.T.Rudchik, A.A.Rudchik, O.O.Chepurnov, K.Rusek, N.Keeley, K.W.Kemper, S.Kliczewski, E.Piasecki, A.Trzcinska, Val.M.Pirnak, O.A.Ponkratenko, I.Strojek, E.I.Koshchy, R.Siudak, S.B.Sakuta, A.P.Ilyin, Yu.M.Stepanenko, Yu.O.Shyrma, V.V.Uleshchenko, K.A.Chercas, H.M.Maridi, N.Burtebayev

6Li + 15N interaction at Ec.m. = 23.1 MeV: Validation of the α + d cluster model of 6Li

NUCLEAR REACTIONS 6Li(15N, 15N), (15N, 15N'), (15N, 6Li'), E=81 MeV from the U-200P cyclotron of University of Warsaw]; measured reaction products 15N and 6Li, σ(θ) using four ΔE-E telescopes of silicon detectors. 6Li; deduced differential cross sections for the resonances in 6Li, cluster structure of 6Li and the role of 6Li to α+d breakup. Comparison with optical model (OM), coupled-channel (CC) and coupled discretized continuum channel (CDCC) calculations using FRESCO code by including 6Li to α+d breakup, excitation of 15N levels, and the 15N(6Li, 7Li)14N one-neutron pickup reaction channel.

doi: 10.1103/PhysRevC.103.044614
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Data from this article have been entered in the XUNDL database. For more information, click here.


2021TR09      Phys.Rev. C 104, 054605 (2021)

V.Tripathi, K.W.Kemper, L.T.Baby, P.C.Bender, S.L.Tabor, N.Keeley

Impact of nucleon transfer channels on complete fusion in the 6, 7Li + 58Ni reactions near the Coulomb barrier

NUCLEAR REACTIONS 58Ni(6Li, 6Li), (7Li, 7Li), (6Li, X), (7Li, X), 59Ni/59Cu/61Cu/62Cu/62Zn, E=10-22 MeV beam from the Superconducting Accelerator Laboratory at Florida State University; measured reaction products, Eγ, Iγ, residue σ(E), total residue σ(E); deduced n-stripping and p-stripping transfer σ(E). Comparison with statistical model calculations using code PACE4, with coupled reaction channels (CRC) calculations using the code FRESCO, and with coupled-channels calculations using the code CCFULL.

doi: 10.1103/PhysRevC.104.054605
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC2701.


2020KE04      Phys.Rev. C 102, 014617 (2020)

N.Keeley, K.W.Kemper, K.Rusek

Multistep processes in heavy-ion-induced single-nucleon transfer reactions

NUCLEAR REACTIONS 208Pb(12C, 11B), (12C, 13C), E=77.4, 97.9, 101, 116.4 MeV; calculated differential σ(θ, E) using coupled channel Born approximation calculations with the inclusion of a two-step transfer path. Comparison with finite-range distorted wave Born approximation (FR-DWBA) calculations. Comparison with CCBA calculations, and with experimental data.

doi: 10.1103/PhysRevC.102.014617
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2020KE09      Eur.Phys.J. A 56, 263 (2020)

N.Keeley, K.W.Kemper, K.Rusek

Important Influence of Entrance Channel Reorientation Coupling on Proton Stripping

NUCLEAR REACTIONS 208Pb(7Li, 6He), E=52 MeV; analyzed available data; calculated σ(θ); deduced optical model parameters, spectroscopic factors.

doi: 10.1140/epja/s10050-020-00271-0
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2020KE10      Phys.Rev. C 102, 064611 (2020)

N.Keeley, R.S.Mackintosh

Reaction channel contributions to the triton optical potential

NUCLEAR REACTIONS 16O, 40Ca(t, t), (t, t'), (t, α), E=33 MeV; calculated differential σ(θ), analyzing powers Ay(θ), dynamical polarization potentials (DPPs) by coupling to pickup and inelastic channels; deduced undulatory features in the DPPs. Coupled channel (CC) and coupled reaction channel (CRC) calculations using the FRESCO code. Comparison of σ(θ) calculations with experimental data.

doi: 10.1103/PhysRevC.102.064611
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2020MA45      Phys.Rev. C 102, 034609 (2020)

I.Martel, N.Keeley, K.W.Kemper, K.Rusek

Multi-neutron transfer in 8He-induced reactions near the Coulomb barrier

NUCLEAR REACTIONS 208Pb(8He, 6He), (8He, α), E=22 MeV; analyzed GANIL experimental data in 2018Ma56 using DWBA; deduced 1n- and 2n-stripping components, direct four-neutron (4n) stripping as the main mechanism for 4He production.

doi: 10.1103/PhysRevC.102.034609
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2020OV01      Acta Phys.Pol. B51, 731 (2020)

J.D.Ovejas, A.Knyazev, I.Martel, O.Tengblad, M.J.G.Borge, J.Cederkall, N.Keeley, K.Rusek, C.Garcia-Ramos, L.A.Acosta, A.A.Arokiaraj, M.Babo, T.Cap, N.Ceylan, G.De Angelis, A.Di Pietro, J.P.Fernandez, P.Figuera, L.Fraile, H.Fynbo, D.Galviz, J.H.Jensen, B.Jonson, R.Kotak, T.Kurtukian, M.Madurga, G.Marquinez-Duran, M.Munch, A.K.Orduz, R.Honorio, A.Pakou, T.Perez, L.Peralta, A.Perea, R.Raabe, M.Renaud, K.Riisager, A.M.Sanchez-Benitez, J.Sanchez-Segovia, O.Sgouros, V.Soukeras, P.Teubig, S.Vinals, M.Wolinska-Cichocka, R.Wolski, J.Yang

Halo Effects in the Low-Energy Scattering of 15C with Heavy Targets

doi: 10.5506/APhysPolB.51.731
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2020PA05      Phys.Rev. C 101, 024602 (2020)

A.Pakou, O.Sgouros, V.Soukeras, F.Cappuzzello, L.Acosta, C.Agodi, A.Boiano, S.Calabrese, D.Carbone, M.Cavallaro, N.N.Deshmukh, A.Foti, A.Hacisalihoglu, N.Keeley, M.La Commara, I.Martel, M.Mazzocco, A.Muoio, C.Parascandolo, D.Pierroutsakou, K.Rusek, A.M.Sanchez-Benitez, G.Santagati, G.Souliotis, A.Spatafora, E.Strano, D.Torresi, A.Trzcinska

9Be + p breakup at 5.67A MeV in a full kinematics approach

NUCLEAR REACTIONS 1H(9Be, X), E=51 MeV; measured ΔE-E spectra for the recoils, ααp-coin using EXPADES module at the MAGNEX facility of INFN-LNS-Catania; deduced α-α relative energy spectrum from analysis of triple coincidence events, energy spectrum of recoiling protons, rates of three breakup modes: α+α+n, 8Be+n and 5He+4He for the 9Be Borromean nucleus.

doi: 10.1103/PhysRevC.101.024602
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2020SG01      Acta Phys.Pol. B51, 737 (2020)

O.Sgouros, V.Soukeras, A.Pakou, F.Cappuzzello, L.Acosta, C.Agodi, N.Alamanos, S.Calabrese, D.Carbone, M.Cavallaro, A.Foti, N.Keeley, I.Martel, K.Rusek, D.Torresi

Study of the 6Li+p and 7Li+p systems in the continuum discretized coupled channels approach

doi: 10.5506/APhysPolB.51.737
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2019KE02      Phys.Rev. C 99, 014615 (2019)

N.Keeley, A.Pakou, V.Soukeras, F.Cappuzzello, L.Acosta, C.Agodi, A.Boiano, S.Calabrese, D.Carbone, M.Cavallaro, N.Deshmukh, A.Foti, A.Hacisalihoglu, M.La Commara, I.Martel, M.Mazzocco, A.Muoio, C.Parascandolo, D.Pierroutsakou, K.Rusek, A.M.Sanchez-Benitez, G.Santagati, O.Sgouros, G.Souliotis, A.Spatafora, E.Strano, D.Torresi, A.Trzcinska

Coherent coupled-reaction-channels analysis of existing and new p + 9Be data between 1.7 and 15 MeV/nucleon

NUCLEAR REACTIONS 1H(9Be, 9Be), E=15, 22, 51 MeV; measured scattered 9Be particles, σ(E, θ) using the large acceptance MAGNEX spectrometer at INFN-LNS-Catania. 9Be(p, p), (p, p'), (p, d), (polarized p, p), E=3, 68, 10, 15, MeV/nucleon; analyzed differential σ(θ, E), and vector analyzing powers Ay(θ); deduced renormalized differential σ(θ, E), and optical model parameters. Coupled-reaction-channels model using FRESCO code.

doi: 10.1103/PhysRevC.99.014615
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetO2402.


2019KE03      Phys.Rev. C 99, 024603 (2019)

N.Keeley, K.W.Kemper, I.Martel, K.Rusek, A.M.Sanchez-Benitez

Comparison of the energy dependence of near-barrier 6He and 8He + 208Pb optical potentials

NUCLEAR REACTIONS 208Pb(6He, 6He), (6He, X), (8He, 8He), (8He, X), E=16, 22 MeV; analyzed σ(θ, E) using optical model using FRESCO code; deduced optical potential parameters; calculated total reaction σ(E).

doi: 10.1103/PhysRevC.99.024603
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2019KE05      Phys.Rev. C 99, 034614 (2019)

N.Keeley, R.S.Mackintosh

Pickup coupling contribution to the optical model potential for 30.3 MeV protons and neutrons on 40Ca

NUCLEAR REACTIONS 40Ca(n, n), (p, p), E=25, 30.3, 35, 40, 45 MeV; calculated volume integrals of the four components of the dynamic polarization potentials (DPP) induced by (p, d) and (n, d) couplings, change in rms radius of the real central component, change in the total reaction cross section induced by couplings to various states in 39Ca and 39K, the integrated cross section to the specific coupled reaction channels, radial real central, imaginary central, real spin-orbit, and imaginary spin-orbit components of the DPP. Coupled reaction channel (CRC) calculations using the FRESCO code.

doi: 10.1103/PhysRevC.99.034614
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2019MA58      Phys.Rev. C 100, 024602 (2019)

M.Mazzocco, N.Keeley, A.Boiano, C.Boiano, M.La Commara, C.Manea, C.Parascandolo, D.Pierroutsakou, C.Signorini, E.Strano, D.Torresi, H.Yamaguchi, D.Kahl, L.Acosta, P.Di Meo, J.P.Fernandez-Garcia, T.Glodariu, J.Grebosz, A.Guglielmetti, Y.Hirayama, N.Imai, H.Ishiyama, N.Iwasa, S.C.Jeong, H.M.Jia, Y.H.Kim, S.Kimura, S.Kubono, G.La Rana, C.J.Lin, P.Lotti, G.Marquinez-Duran, I.Martel, H.Miyatake, M.Mukai, T.Nakao, M.Nicoletto, A.Pakou, K.Rusek, Y.Sakaguchi, A.M.Sanchez-Benitez, T.Sava, O.Sgouros, V.Soukeras, F.Soramel, E.Stiliaris, L.Stroe, T.Teranishi, N.Toniolo, Y.Wakabayashi, Y.X.Watanabe, L.Yang, Y.Y.Yang, H.Q.Zhang

Elastic scattering for the 8B and 7Be + 208Pb systems at near-Coulomb barrier energies

NUCLEAR REACTIONS 208Pb(8B, 8B), E=50 MeV, [8B secondary beam from 3He(6Li, 8B), E=11.2 MeV/nucleon primary reaction at RIKEN]; 208Pb(7Be, 7Be), E=37.4, 40.5, 42.2 MeV, [7Be secondary beam from 1H(7Li, 7Be), E=48.8 MeV primary reaction at LNL-Legnaro]; measured charged particles, σ(θ, E) using the EXPADES detector array, and angular distribution; analyzed by optical model and the continuum discretized coupled channels (CDCC) formalisms. Experiments performed at the CNS Radioactive Ion Beams (CRIB) facility at RIKEN, and EXOTIC facility at the Laboratori Nazionali di Legnaro (LNL).

doi: 10.1103/PhysRevC.100.024602
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetE2638.


2019MA83      Phys.Rev. C 100, 064613 (2019)

R.S.Mackintosh, N.Keeley

Reaction channel contributions to the helion optical potential

NUCLEAR REACTIONS 16O(3He, 3He), (3He, 3He'), (3He, α), E=32 MeV; 40Ca, 208Pb(3He, 3He), (3He, 3He'), (3He, α), E=33 MeV; calculated σ(θ), Ay(θ), dynamical polarization potentials (DPPs) by coupling to pickup and inelastic channels; deduced undulatory features in the DPPs. Coupled channel (CR) and coupled reaction channel (CRC) calculations using the FRESCO code. Comparison of σ(θ) and Ay(θ) calculations with experimental data.

doi: 10.1103/PhysRevC.100.064613
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2019PA42      Phys.Rev. C 100, 014618 (2019)

S.K.Pandit, A.Shrivastava, K.Mahata, V.V.Parkar, N.Keeley, P.C.Rout, K.Ramachandran, C.S.Palshetkar, I.Martel, A.Kumar, A.Chatterjee, S.Kailas

Role of target shell structure in direct reactions involving weakly bound 7Li

NUCLEAR REACTIONS 89Y(7Li, 7Li), (7Li, 6Li), (7Li, 2α), (7Li, dα), (7Li, tα), (7Li, 6He), E=23, 28, 30 MeV; measured charged particles, particle identification spectrum for protons, deuterons, tritons, α, 6He, and 6,7Li, angular distributions of charged particles, αα-, αd-, and αt-coin, σ(E), differential σ(θ, E), σ(E) for prompt and resonant breakup of 7Li using silicon ΔE-E telescope for charged particle detection at BARC-TIFR Pelletron-Linac facility; deduced that observed cross sections at low target excitations for nucleon transfer reactions correlate with the vacancies in the valence orbitals. Comparison with continuum discretized coupled channel (CDCC), and coupled-channel Born approximation (CCBA) calculations, and with results from previous similar experiments using 93Nb target.

doi: 10.1103/PhysRevC.100.014618
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2019PA44      Acta Phys.Pol. B50, 1547 (2019)

A.Pakou, F.Cappuzzello, L.Acosta, C.Agodi, S.Calabrese, D.Carbone, M.Cavallaro, N.Keeley, I.Martel, K.Rusek, A.M.Sanchez-Benitez, O.Sgouros, V.Soukeras, G.Souliotis, A.Spatafora, D.Torresi

A Microscopic Approach for p+9Be at Energies Between 1.7 to 15 MeV/nucleon

doi: 10.5506/aphyspolb.50.1547
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2019WE12      Phys.Rev. C 100, 024604 (2019)

W.D.Weintraub, N.Keeley, K.W.Kemper, K.Kravvaris, F.Marechal, D.Robson, B.T.Roeder, K.Rusek, A.Volya

Analyzing powers and the role of multistep processes in the 12C(7Li, t)16O reaction

NUCLEAR REACTIONS 12C(7Li, t), (polarized 7Li, t)16O, E=34 MeV; measured E(t), I(t), σ(θ), T10, T20 and T30 analyzing powers using two ΔE-E telescopes of Si detectors at the FSU tandem accelerator facility. 16O; deduced levels, J, π; calculated Sα spectroscopic amplitudes and relative angular momentum for the various components of the 16O=α+12C radial wave functions from the shell model calculations. Coupled channel Born approximation (CCBA) and DWBA analyses of σ(θ) and analyzing power data.

doi: 10.1103/PhysRevC.100.024604
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC2406. Data from this article have been entered in the XUNDL database. For more information, click here.


2018AV01      Phys.Rev. C 97, 014313 (2018)

M.L.Avila, L.T.Baby, J.Belarge, N.Keeley, K.W.Kemper, E.Koshchiy, A.N.Kuchera, G.V.Rogachev, K.Rusek, D.Santiago-Gonzalez

Sub-Coulomb 3He transfer and its use to extract three-particle asymptotic normalization coefficients

NUCLEAR REACTIONS 6Li(13C, t)16O, E=7.72 MeV; measured triton spectra, σ(θ) using two ΔE-E counter telescopes at the tandem van de Graaff John D. Fox accelerator laboratory of Florida State University. 16O; deduced levels, J, π, spectroscopic factors and asymptotic normalization coefficients (ANCs) for 16O and 13C+3He overlaps, DWBA analysis of σ(θ) distributions for 0+, 3-, 2+ and 1- states in 16O.

doi: 10.1103/PhysRevC.97.014313
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC2289. Data from this article have been entered in the XUNDL database. For more information, click here.


2018FL03      Phys.Rev. C 97, 034601 (2018)

F.Flavigny, N.Keeley, A.Gillibert, A.Obertelli

Single-particle strength from nucleon transfer in oxygen isotopes: Sensitivity to model parameters

NUCLEAR REACTIONS 2H(14O, d), (14O, t), (14O, 3He), E=18.1 MeV/nucleon from the SPIRAL-GANIL facility; measured protons, deuterons, tritons, 3He and 4He using four telescopes for tritons and 3He, and a wall of two telescopes for elastically scattered deuterons, σ(θ). See also previous publication 2013Fl01 for these reactions. 16O(d, d), E=28, 52 MeV; 16,18O(d, 3He), E=26 MeV/nucleon; 16O(d, t), E=14 MeV/nucleon; analyzed previous experimental data; deduced spectroscopic factors using coupled reaction channels (CRC) and DWBA. 14,16,18O; calculated rms radii of the 1p3/2 and 1p1/2 orbitals using HFB formalism with the SLy4 interaction, and compared with experimental value from 16O(e, e'p) reaction. Discussed impact of input parameters to the reaction model such as distorting potentials and overlap functions.

doi: 10.1103/PhysRevC.97.034601
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2018HA22      Phys.Rev. C 97, 054609 (2018)

Sh.Hamada, N.Keeley, K.W.Kemper, K.Rusek

Cluster folding analysis of 20Ne + 16O elastic transfer

NUCLEAR REACTIONS 16O(20Ne, 16O)20Ne, E(cm)=24.5, 24.7, 27.9, 28.2, 29.1, 31.7, 32.1, 33.0, 35.5 MeV; analyzed experimental σ(θ, E) data using optical model cluster folding including elastic transfer process via DWBA; deduced σ, spectroscopic factors, and real and imaginary volume integrals per nucleon pair. Relevance to α-particle structure of nuclei.

doi: 10.1103/PhysRevC.97.054609
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2018KE01      Phys.Rev. C 97, 014605 (2018)

N.Keeley, R.S.Mackintosh

Reaction channel coupling effects for nucleons on 16O: Induced undularity and proton-neutron potential differences

NUCLEAR REACTIONS 16O(p, p), (n, n), E=30.1 MeV; calculated σ(θ), Ay(θ), phase shifts, and compared with experimental data; calculated dynamical polarization potentials (DPPs) by coupling to pickup channels; deduced undulatory features in the DPPs, and compared with corresponding features of empirical optical model potentials (OMPs). Coupled channel (CR) and coupled reaction channel (CRC) calculations using FRESCO code by including couplings to the 6.13 MeV, 3- state and 22 MeV, 2+ GQR in 16O.

doi: 10.1103/PhysRevC.97.014605
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2018KE03      Eur.Phys.J. A 54, 71 (2018)

N.Keeley, K.W.Kemper, K.Rusek

A cautionary tale: The Coulomb modified ANC for the 1/2+2 state in 17O

RADIOACTIVITY 17O(α); calculated ANC (Asymptotic Normalization Coefficient) for the decay of 1/2+2 state excitation energy, uncertainty of Q; deduced limit of ANC precision as dependent on Q.

doi: 10.1140/epja/i2018-12507-5
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2018MA52      Phys.Rev. C 98, 024624 (2018)

R.S.Mackintosh, N.Keeley

Remarkable independence of dynamical polarization potentials of the underlying potential

NUCLEAR REACTIONS 40Ca(polarized p, p), E=30.3 MeV; analyzed Ay(θ) data with the inclusion of coupling to the 3/2+ ground state of 39Ca in a search for the conventional Wood-Saxon parameters, dynamical polarization potentials (DPP) with coupling to the 3/2+ g.s. and 5/2+ lumped state in 39Ca; deduced that DPP caused by coupling to pickup channels is qualitatively and almost quantitatively unaffected by substantial changes in the bare potential.

doi: 10.1103/PhysRevC.98.024624
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2018MA56      Phys.Rev. C 98, 034615 (2018)

G.Marquinez-Duran, I.Martel, A.M.Sanchez-Benitez, L.Acosta, J.L.Aguado, R.Berjillos, A.R.Pinto, T.Garcia, J.A.Duenas, K.Rusek, N.Keeley, K.W.Kemper, M.A.G.Alvarez, M.J.G.Borge, A.Chbihi, C.Cruz, M.Cubero, J.P.Fernandez-Garcia, B.Fernandez-Martinez, J.L.Flores, J.Gomez-Camacho, J.A.Labrador, F.M.Marques, A.M.Moro, M.Mazzocco, A.Pakou, V.V.Parkar, N.Patronis, V.Pesudo, D.Pierroutsakou, R.Raabe, R.Silvestri, N.Soic, L.Standylo, I.Strojek, O.Tengblad, R.Wolski, Z.Abou-Haidar

Interaction of 8He with 208Pb at near-barrier energies: 4He and 6He production

NUCLEAR REACTIONS 208Pb(8He, 6He), (8He, α), (8He, 8He), E=16, 22 MeV; measured reaction products, and differential σ(θ) using GLORIA detector array of SPIRAL-GANIL facility; deduced σ(2n)/σ(1n) ratio. Comparison with optical model and DWBA calculations. Inferred dominant neutron-stripping mechanism.

doi: 10.1103/PhysRevC.98.034615
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetO2416.


2018RU05      Acta Phys.Pol. B49, 353 (2018)

K.Rusek, N.Keeley, K.W.Kemper, J.L.Aguado-Casas, T.Garcia, I.Martel, A.M.Sanchez-Benitez

Pairing in Exotic He Isotopes

NUCLEAR REACTIONS 206Pb(6He, α)208Pb, E=18 MeV;208Pb(8He, 6He), E not given; calculated, reanalyzed 2n transfer probabilities vs the closest approach

NUCLEAR STRUCTURE 6,8He; calculated, reanalyzed 2n transfer probability data; deduced strong pairing of 2 valence neutrons in 6He, similar to that found in 18O, weaker, but still strong effect for 6He.

doi: 10.5506/aphyspolb.49.353
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2017KU27      Phys.Rev. C 96, 045812 (2017)

S.A.Kuvin, J.Belarge, L.T.Baby, J.Baker, I.Wiedenhover, P.Hoflich, A.Volya, J.C.Blackmon, C.M.Deibel, H.E.Gardiner, J.Lai, L.E.Linhardt, K.T.Macon, B.C.Rasco, N.Quails, K.Colbert, D.L.Gay, N.Keeley

Measurement of 17F (d, n) 18Ne and the impact on the 17F (p, γ) 18Ne reaction rate for astrophysics

NUCLEAR REACTIONS 2H(17F, n)18Ne, E=95.5 MeV, [secondary 17F beam from 2H(16O, n) primary reaction using RESOLUT RIB facility at the accelerator Laboratory of Florida State University]; measured reaction products, time-of-flight, E(n), I(n), E(p), I(p), Eγ, γγ-, (particle)γ-, and (17F)p-coin using RESONEUT detector system. 18Ne; deduced center-of-mass resonance-energy spectrum from invariant-mass analysis, levels, proton resonances, J, π, σ, spectroscopic factors, Γp, configurations, asymptotic normalization coefficients (ANCs). Coupled reaction-channel (CRC) calculation. 17F(p, γ), T9=0.04-0.9; deduced direct-capture reaction rates for astrophysical hot CNO cycles in novas. Comparison with previous experimental results.

doi: 10.1103/PhysRevC.96.045812
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC2277. Data from this article have been entered in the XUNDL database. For more information, click here.


2017MA06      Phys.Rev. C 95, 024602 (2017)

G.Marquinez-Duran, N.Keeley, K.W.Kemper, R.S.Mackintosh, I.Martel, K.Rusek, A.M.Sanchez-Benitez

Influence of single-neutron stripping on near-barrier 6He 208Pb and 8He + 208Pb elastic scattering

NUCLEAR REACTIONS 208Pb(6He, 6He), (8He, 8He), E=22 MeV; analyzed σ(θ) data, total reaction cross sections for the bare and summed 1n-stripping cross sections; deduced optical model parameters, dynamic polarization potentials, and effect of single-neutron stripping on elastic scattering. Coupled reaction channels (CRC) and S-matrix calculations.

doi: 10.1103/PhysRevC.95.024602
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2017ME04      Phys.Rev. C 95, 034607 (2017)

S.Yu.Mezhevych, A.T.Rudchik, A.A.Rudchik, O.A.Ponkratenko, N.Keeley, K.W.Kemper, M.Mazzocco, K.Rusek, S.B.Sakuta

Cluster structure of 17O

NUCLEAR REACTIONS 13C(11B, 7Li)17O, E=45 MeV; measured particle spectra, σ(θ) using ΔE-E telescopes at the Heavy Ion Laboratory of the University of Warsawa; analyzed σ(θ) data by coupled-channel Born approximation (CCBA) calculations 17O; deduced levels, α+13C spectroscopic factors from a comparison of experimental data and the calculations at forward angles for the compound nucleus using code HELGA.

doi: 10.1103/PhysRevC.95.034607
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetD5133. Data from this article have been entered in the XUNDL database. For more information, click here.


2017PA11      Phys.Rev. C 95, 044615 (2017)

A.Pakou, O.Sgouros, V.Soukeras, F.Cappuzzello, N.Keeley, L.Acosta, C.Agodi, X.Aslanoglou, S.Calabrese, D.Carbone, M.Cavallaro, A.Foti, G.Marquinez-Duran, I.Martel, M.Mazzocco, C.Parascandolo, D.Pierroutsakou, K.Rusek, E.Strano, V.A.B.Zagatto, K.Zerva

Exclusive breakup of 7Li incident on a proton target at 5.44A MeV

NUCLEAR REACTIONS 1H(7Li, α), (7Li, 7Li), E=5.44 MeV/nucleon; measured 7Li and (tritons)(α)-coin spectra, elastic and breakup angular distributions, σ(θ) using large acceptance MAGNEX spectrometer at LNS-Catania. Comparison of experimental cross sections with continuum discretized coupled channel (CDCC) calculations, three body Monte Carlo simulations, virtual couplings to continuum.

doi: 10.1103/PhysRevC.95.044615
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetO2410.


2017PA27      Phys.Rev. C 96, 034615 (2017)

A.Pakou, F.Cappuzzello, N.Keeley, L.Acosta, C.Agodi, X.Aslanoglou, S.Calabrese, D.Carbone, M.Cavallaro, A.Foti, G.Marquinez-Duran, I.Martel, M.Mazzocco, C.Parascandolo, D.Pierroutsakou, K.Rusek, O.Sgouros, V.Soukeras, E.Strano, V.A.B.Zagatto, K.Zerva

Global description of the 7Li + p reaction at 5.44 MeV/u in a continuum-discretized coupled-channels approach

NUCLEAR REACTIONS 1H(7Li, 7Be), E=3.57, 5, 5.44 MeV/nucleon; 1H(7Li, α), E=5.44 MeV/nucleon; 1H(7Li, 7Li), E=2.29, 3.57, 5, 5.44 MeV/nucleon; 1H(7Li, 7Li'), E=2.29, 3.57, 5, 5.44 MeV/nucleon; measured σ(θ, E) using large acceptance MAGNEX spectrometer at INFN LNS-Catania. 1H(7Li, α), E=5.44 MeV/nucleon; measured (tritons)α-coin spectra, breakup σ(θ) using large acceptance MAGNEX spectrometer coupled to a silicon surface barrier detector. Comparison with continuum-discretized coupled-channels (CDCC) calculations.

doi: 10.1103/PhysRevC.96.034615
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2017PA28      Eur.Phys.J. A 53, 167 (2017)

A.Pakou, N.Keeley, F.Cappuzzello, L.Acosta, C.Agodi, X.Aslanoglou, S.Calabrese, D.Carbone, M.Cavallaro, A.Foti, G.Marquinez-Duran, I.Martel, M.Mazzocco, C.Parascandolo, D.Pierroutsakou, K.Rusek, O.Sgouros, V.Soukeras, E.Strano, V.A.B.Zagatto

The 7Li(d, p)8Li reaction in inverse kinematics at 5.44 MeV/u

NUCLEAR REACTIONS 2H(7Li, p)8Li, E=5.44 MeV/nucleon; measured reaction products (only at 5.44 MeV/nucleon); deduced σ(θ) to gs and to 1+ state (0.98 MeV). 2H(7Li, p), E=5.44, 6 MeV/nucleon;2H(7Li, 7Li), E=6 MeV/nucleon; calculated σ(θ) using CRC (Coupled Reaction Channels); deduced 8Li, 7Li+n overlap using fit to the data.

doi: 10.1140/epja/i2017-12361-y
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetO2376. Data from this article have been entered in the XUNDL database. For more information, click here.


2017PA39      Phys.Rev. C 96, 044616 (2017)

S.K.Pandit, A.Shrivastava, K.Mahata, V.V.Parkar, R.Palit, N.Keeley, P.C.Rout, A.Kumar, K.Ramachandran, S.Bhattacharyya, V.Nanal, C.S.Palshetkar, T.N.Nag, S.Gupta, S.Biswas, S.Saha, J.Sethi, P.Singh, A.Chatterjee, S.Kailas

Investigation of large alpha production in reactions involving weakly bound 7Li

NUCLEAR REACTIONS 93Nb(7Li, X)92Zr/93Nb/94Nb/95Nb/93mMo/94Mo/95Mo/95mMo/95Tc/95mTc/96Tc/96mTc/97Tc/96Ru/97Ru/98Ru, E=24, 26, 28, 30 MeV; measured Eγ, Iγ, γγ-coin, σ(E) for (t, n), (t, 2n), (t, 3n), (α, n), (α, 2n), (7Li, 2n), (7Li, 3n), (7Li, 4n), and (7Li, p2n) channels using INGA array at Pelletron-Linac facility in Mumbai; analyzed literature and present data for t-capture and inclusive α-production cross sections for 7Li projectiles incident on 28Si, 58,64Ni, 65Cu, 93Nb, 118,124Sn, 159Tb, 165Ho, 197Au, 198Pt, 208Pb, and 209Bi targets. Comparison with statistical model calculations using PACE code, and angular momentum distribution from the coupled channel code CCFULL.

doi: 10.1103/PhysRevC.96.044616
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetD6313.


2017SG01      Phys.Rev. C 95, 054609 (2017)

O.Sgouros, A.Pakou, D.Pierroutsakou, M.Mazzocco, L.Acosta, X.Aslanoglou, Ch.Betsou, A.Boiano, C.Boiano, D.Carbone, M.Cavallaro, J.Grebosz, N.Keeley, M.La Commara, C.Manea, G.Marquinez-Duran, I.Martel, N.G.Nicolis, C.Parascandolo, K.Rusek, A.M.Sanchez-Benitez, C.Signorini, F.Soramel, V.Soukeras, C.Stefanini, E.Stiliaris, E.Strano, I.Strojek, D.Torresi

Elastic scattering of 7Be+28Si at near-barrier energies

NUCLEAR REACTIONS 28Si(7Be, 7Be), E=13.2, 17.2, 19.8, 22.0 MeV, [7Be secondary beam from 1H(7Li, 7Be), E=26, 31, 33 MeV primary reaction]; measured 7Be spectra, σ, event by event analysis, quasi-elastic σ(θ) using the multidetector EXPADES array at LNL-Legnaro; analyzed by optical-model calculations, and continuum discretized coupled channel (CDCC) calculations, with cluster structure of 7Be; deduced total σ, optical potential parameters, threshold anomaly features.

doi: 10.1103/PhysRevC.95.054609
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetO2412.


2017SO09      Phys.Rev. C 95, 054614 (2017)

V.Soukeras, A.Pakou, F.Cappuzzello, L.Acosta, C.Agodi, N.Alamanos, S.Calabrese, D.Carbone, M.Cavallaro, A.Cunsolo, A.Di Pietro, J.P.Fernandez-Garcia, P.Figuera, M.Fisichella, A.Foti, N.Keeley, G.Marquinez-Duran, I.Martel, M.Mazzocco, D.Pierroutsakou, K.Rusek, G.Santagati, O.Sgouros, E.Stiliaris, E.Strano, D.Torresi, K.Zerva

Breakup of 6Li +p at near-barrier energies and the effect on elastic scattering

NUCLEAR REACTIONS 1H(6Li, α), E=25, 29 MeV; 1H(6Li, 6Li), E=16, 20, 25, 29 MeV; measured E(d), E(α), two-dimensional plot for (deuterons)(α)-coin, exclusive breakup spectrum, breakup and elastic angular distributions σ(θ) using large acceptance MAGNEX spectrometer at LNS-Catania. Comparison of experimental cross sections with continuum discretized coupled channel (CDCC) calculations. Cluster structure of 6Li. Breakup Monte Carlo simulations for energy spectra of fragments.

doi: 10.1103/PhysRevC.95.054614
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetO2411.


2017ST07      Acta Phys.Pol. B48, 615 (2017)

E.Strano, D.Torresi, M.Mazzocco, N.Keeley, A.Boiano, C.Boiano, P.Di Meo, A.Guglielmetti, M.La Commara, P.Molini, C.Manea, C.Parascandolo, D.Pierroutsakou, C.Signorini, F.Soramel, D.Filipescu, A.Gheorghe, T.Glodariu, J.Grebosz, S.Jeong, Y.H.Kim, J.A.Lay, H.Miyatake, M.Nicoletto, A.Pakou, K.Rusek, O.Sgouros, V.Soukeras, L.Stroe, N.Toniolo, A.Vitturi, Y.Watanabe, K.Zerva

Discrimination of Processes and Optical Model Analysis in the 17O+52Ni Collision Around the Coulomb Barrier

NUCLEAR REACTIONS 58Ni(17O, 17O), E=40-50 MeV; measured reaction products; deduced σ(θ); calculated σ(θ) using self-normalization formula and using optical model; deduced imaginary radius parameter, optical model parameters. Compared with 58Ni(16O, 16O) and 58Ni(17F, 17F).

doi: 10.5506/APhysPolB.48.615
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2016BE32      Phys.Rev.Lett. 117, 182701 (2016)

J.Belarge, S.A.Kuvin, L.T.Baby, J.Baker, I.Wiedenhover, P.Hoflich, A.Volya, J.C.Blackmon, C.M.Deibel, H.E.Gardiner, J.Lai, L.E.Linhardt, K.T.Macon, E.Need, B.C.Rasco, N.Quails, K.Colbert, D.L.Gay, N.Keeley

Experimental Investigation of the 19Ne(p, γ)20Na Reaction Rate and Implications for Breakout from the Hot CNO Cycle

NUCLEAR REACTIONS 2H(19Ne, n), E=86 MeV; measured reaction products, Ep, Ip; deduced energy levels, J, π, properties of low-lying resonances, astrophysical reaction rates. Comparison with available data.

doi: 10.1103/PhysRevLett.117.182701
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC2248. Data from this article have been entered in the XUNDL database. For more information, click here.


2016MA18      Acta Phys.Pol. B47, 841 (2016)

G.Marquinez-Duran, A.M.Sanchez-Benitez, I.Martel, L.Acosta, K.Rusek, M.A.G.Alvarez, R.Berjillos, M.J.G.Borge, A.Chbihi, C.Cruz, M.Cubero, J.A.Duenas, J.P.Fernandez-Garcia, B.Fernandez-Martinez, J.L.Flores, J.Gomez-Camacho, N.Keeley, J.A.Labrador, M.Marques, A.M.Moro, M.Mazzocco, A.Pakou, V.V.Parkar, N.Patronis, V.Pesudo, D.Pierroutsakou, R.Raabe, R.Silvestri, N.Soic, L.Standylo, I.Strojek, O.Tengblad, R.Wolski, A.H.Zia

Study of the Near-barrier Scattering of 8He on 208Pb

NUCLEAR REACTIONS 208Pb(8He, 8He), E=22 MeV; measured reaction products; deduced σ.

doi: 10.5506/APhysPolB.47.841
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetO2326.


2016MA79      Phys.Rev. C 94, 064618 (2016)

G.Marquinez-Duran, I.Martel, A.M.Sanchez-Benitez, L.Acosta, R.Berjillos, J.Duenas, K.Rusek, N.Keeley, M.A.G.Alvarez, M.J.G.Borge, A.Chbihi, C.Cruz, M.Cubero, J.P.Fernandez-Garcia, B.Fernandez-Martinez, J.L.Flores, J.Gomez-Camacho, K.W.Kemper, J.A.Labrador, M.Marques, A.M.Moro, M.Mazzocco, A.Pakou, V.V.Parkar, N.Patronis, V.Pesudo, D.Pierroutsakou, R.Raabe, R.Silvestri, N.Soic, L.Standylo, I.Strojek, O.Tengblad, R.Wolski, Z.Abou-Haidar

Precise measurement of near-barrier 8He+ 208Pb elastic scattering: Comparison with 6He

NUCLEAR REACTIONS 208Pb(8He, 8He), E=22 MeV, [secondary 8He beam from C(13C, X), E=75 MeV/nucleon primary reaction using SPIRAL2 facility at GANIL]; measured scattered particles and reaction fragments, and angular distributions using the Global Reaction Array (GLORIA) detection system; deduced optical model parameters using optical model analysis for data from the present experiment and those from previous 208Pb(6He, 6He), E=22 MeV reaction, much longer range absorption for 6He as compared to that for 8He.

doi: 10.1103/PhysRevC.94.064618
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetO2326.


2016ME05      Acta Phys.Pol. B47, 815 (2016)

C.E.Mertin, L.T.Baby, D.D.Caussyn, K.W.Kemper, N.Keeley, S.A.Kuvin, A.V.Skeeters, I.Wiedenhover

Population of Levels in 15O up to 15 MeV in Excitation by the 14N(3He, d) Reaction

NUCLEAR REACTIONS 14N(3He, d), E=20 MeV; measured reaction products; deduced level energies, J, π. Comparison with available data.

doi: 10.5506/APhysPolB.47.815
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2016PA24      Phys.Rev. C 93, 061602 (2016)

S.K.Pandit, A.Shrivastava, K.Mahata, N.Keeley, V.V.Parkar, P.C.Rout, K.Ramachandran, I.Martel, C.S.Palshetkar, A.Kumar, A.Chatterjee, S.Kailas

Probing transfer to unbound states of the ejectile with weakly bound 7Li on 93Nb

NUCLEAR REACTIONS 93Nb(7Li, 7Li), (7Li, 7Li'), (7Li, 6Li), (7Li, 8Be)E=24, 28, 30 MeV; measured energy correlation spectra of breakup fragments, elastic σ(E), α+t σ(E) from unbound 7Li breakup, α+d σ(E) from unbound 6Li breakup, and α+α σ(E) from 8Be breakup, one-neutron stripping and one-proton pickup cross sections at Mumbai Pelletron-Linac accelerator facility. Comparison with Coupled-channels Born approximation (CCBA) and continuum-discretized coupled-channels (CDCC) calculations.

doi: 10.1103/PhysRevC.93.061602
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetD6269.


2016PA29      Phys.Rev. C 94, 014604 (2016)

A.Pakou, V.Soukeras, F.Cappuzzello, L.Acosta, C.Agodi, X.Aslanoglou, S.Calabrese, D.Carbone, M.Cavallaro, A.Foti, N.Keeley, G.Marquinez-Duran, I.Martel, M.Mazzocco, C.Parascandolo, D.Pierroutsakou, K.Rusek, O.Sgouros, E.Strano, V.A.B.Zagatto

Probing the cluster structure of 7Li via elastic scattering on protons and deuterons in inverse kinematics

NUCLEAR REACTIONS 1H(7Li, 7Li), (7Li, 7Li'), E=16, 25, 35.38.1 MeV; 2H(7Li, 7Li), (7Li, 7Li'), E=38.1 MeV; measured 7Li spectra, σ(θ, E) using large acceptance MAGNEX spectrometer at LNS-Catania; analyzed using Jeukenne-Lejeune-Mahaux (JLM), and continuum discretized coupled channel (CDCC) calculations, with cluster structure of 7Li, and optical potential.

doi: 10.1103/PhysRevC.94.014604
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetO2310.


2016SG01      Phys.Rev. C 94, 044623 (2016)

O.Sgouros, A.Pakou, D.Pierroutsakou, M.Mazzocco, L.Acosta, X.Aslanoglou, Ch.Betsou, A.Boiano, C.Boiano, D.Carbone, M.Cavallaro, J.Grebosz, N.Keeley, M.La Commara, C.Manea, G.Marquinez-Duran, I.Martel, N.G.Nicolis, C.Parascandolo, K.Rusek, A.M.Sanchez-Benitez, C.Signorini, F.Soramel, V.Soukeras, C.Stefanini, E.Stiliaris, E.Strano, I.Strojek, D.Torresi

α and 3He production in the 7Be+28Si reaction at near-barrier energies: Direct versus compound-nucleus mechanisms

NUCLEAR REACTIONS 28Si(7Be, 3He), (7Be, α), E=13, 20, 22 MeV;[7Be secondary beam from 1H(7Li, 7Be), E=31, 33 MeV]; measured 3He and α spectra, σ(θ) for 3He and 4He, transfer and fusion σ(E) using ΔE-E telescopes of EXPADES array at LNL-Legnaro; deduced ratios of direct-to-total reaction cross sections; Monte-Carlo simulations. Comparison with statistical model and DWBA calculations. Systematics of reduced fusion cross sections for 6,7Li, 7Be, 8B+28Si, and 7,9Be+27Al systems.

doi: 10.1103/PhysRevC.94.044623
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetO2364.


2016ST18      Phys.Rev. C 94, 024622 (2016)

E.Strano, D.Torresi, M.Mazzocco, N.Keeley, A.Boiano, C.Boiano, P.Di Meo, A.Guglielmetti, M.la Commara, P.Molini, C.Manea, C.Parascandolo, D.Pierroutsakou, C.Signorini, F.Soramel, D.Filipescu, A.Gheorghe, T.Glodariu, J.Grebosz, S.Jeong, Y.H.Kim, J.A.Lay, H.Miyatake, M.Nicoletto, A.Pakou, K.Rusek, O.Sgouros, V.Soukeras, L.Stroe, N.Toniolo, A.Vitturi, Y.Watanabe, K.Zerva

17O + 58Ni scattering and reaction dynamics around the Coulomb barrier

NUCLEAR REACTIONS 58Ni(17O, 17O), (17O, X), E=40.0, 42.5, 45.0, 47.5, 50.0 MeV; measured reaction products, σ(θ) for elastic scattering, angular distributions for 1n-stripping process leading to states in 59Ni, angular distributions for target excitation to its first excited 2+ state, total σ(E). Optical model analysis using Woods-Saxon (WS) potentials and code FRESCO for elastic scattering data.

doi: 10.1103/PhysRevC.94.024622
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetD0825.


2016SU05      Phys.Rev. C 93, 024316 (2016)

D.Suzuki, H.Iwasaki, D.Beaumel, M.Assie, H.Baba, Y.Blumenfeld, F.de Oliveira Santos, N.de Sereville, A.Drouart, S.Franchoo, J.Gibelin, A.Gillibert, S.Giron, S.Grevy, J.Guillot, M.Hackstein, F.Hammache, N.Keeley, V.Lapoux, F.Marechal, A.Matta, S.Michimasa, L.Nalpas, F.Naqvi, H.Okamura, H.Otsu, J.Pancin, D.Y.Pang, L.Perrot, C.M.Petrache, E.Pollacco, A.Ramus, W.Rother, P.Roussel-Chomaz, H.Sakurai, J.-A.Scarpaci, O.Sorlin, P.C.Srivastava, I.Stefan, C.Stodel, Y.Tanimura, S.Terashima

Second 0+ state of unbound 12O: Scaling of mirror asymmetry

NUCLEAR REACTIONS 1H(14O, t), E=51 MeV/nucleon, [14O secondary beam from 9Be(16O, X), E=90 MeV/nucleon primary reaction]; measured E(t), I(t), σ(θ), TKE versus θ(lab) using LISE spectrometer and MUST2 telescopes at GANIL. Missing-mass spectroscopy. 12O; deduced levels, J, π, L-transfers, two-proton decay width. Comparison of the second 0+ state of 12O to the mirror state in 12Be and theoretical predictions. Systematics of 0+ states in mirror nuclei pairs of 6Be-6He, 8C-8He, 10C-10Be, 12O-12Be, 14O-14C, 16Ne-16C, 18Ne-18O, 20Mg-20O, 22Mg-22Ne, 24Si-24Ne, 26Si-26Mg, 28S-28Mg, 30S-30Si, 32Ar-32Si, 34Ar-34S, 36Ca-36S, 38Ca-38Ar, 40Ti-40Ar, 42Ti-42Ca, 46Cr-46Ti, 48Ni-48Ca, 50Fe-50Cr, 54Zn-54Cr, 54Ni-54Fe and 58Zn-58Ni. Discussed importance of scaling of mirror asymmetry in the context of ab initio calculations near the drip lines.

doi: 10.1103/PhysRevC.93.024316
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Data from this article have been entered in the XUNDL database. For more information, click here.


2016TR05      Phys.Rev. C 93, 054604 (2016)

A.Trzcinska, E.Piasecki, A.Amar, W.Czarnacki, N.Keeley, M.Kisielinski, S.Kliczewski, M.Kowalczyk, B.Lommel, M.Mutterer, R.Siudak, A.Stolarz, I.Strojek, G.Tiourin, W.H.Trzaska

Examination of the influence of transfer channels on the barrier height distribution: Scattering of 20Ne on 58Ni, 60Ni, and 61Ni at near-barrier energies

NUCLEAR REACTIONS 20Ne(58Ni, X), (60Ni, X), (61Ni, X), E=51 MeV; measured reaction products based on time-of-flight and ΔE-E methods, angular distributions, transfer probabilities and transfer cross sections for 1p, 1n, 2n, 2p and α pickup and stripping channels. Experiments carried out at Warsaw U200-P cyclotron facility. Comparison with coupled reaction channel calculations.

doi: 10.1103/PhysRevC.93.054604
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetD0815.


2015BE22      Eur.Phys.J. A 51, 86 (2015)

Ch.Betsou, A.Pakou, F.Cappuzzello, L.Acosta, C.Agodi, X.Aslanoglou, D.Carbone, M.Cavallaro, A.Di Pietro, J.P.Fernandez-Garcia, P.Figuera, M.Fisichella, A.Foti, N.Keeley, G.Marquinez-Duran, I.Martel, M.Mazzocco, N.G.Nicolis, D.Pierroutsakou, K.Rusek, O.Sgouros, V.Soukeras, E.Stiliaris, E.Strano, D.Torresi

Study of the 6Li + p → 3He + 4He reaction in inverse kinematics

NUCLEAR REACTIONS 1H(6Li, 3He), E=2.7, 3.3, 4.2, 4.8 MeV/nucleon;measured 3He, E(3He), I(3He, θ), Eα, Iα(θ), (3He)α-coin; deduced σ(θ); calculated σ(θ), reaction σ, partial σ from different processes using CDCC and using compound nucleus code MECO. Compared with earlier data.

doi: 10.1140/epja/i2015-15086-y
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetO2281.


2015KE07      Phys.Rev. C 92, 054618 (2015)

N.Keeley, K.W.Kemper, K.Rusek

Strong multistep interference effects in 12C(d, p) to the 9/2+1 state in 13C

NUCLEAR REACTIONS 12C(d, p), E=30 MeV; calculated σ(θ) for 9.50-MeV, 9/2+ resonance in 13C, and compared with experimental data; deduced best fit spectroscopic amplitudes and corresponding empirical mixing ratios for the various possible configurations of states. Coupled reaction channel calculation (CCRC) including the two-step transfer via the 12C 4.44-MeV, 2+ state, the direct one-step transfer via the 12C 0+ ground state, with and without the two-step transfer via the 12C 9.64-MeV, 3- state. Discussed kinematic effect associated with different transfer routes.

doi: 10.1103/PhysRevC.92.054618
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2015MA47      Phys.Rev. C 92, 024615 (2015)

M.Mazzocco, D.Torresi, D.Pierroutsakou, N.Keeley, L.Acosta, A.Boiano, C.Boiano, T.Glodariu, A.Guglielmetti, M.La Commara, J.A.Lay, I.Martel, C.Mazzocchi, P.Molini, C.Parascandolo, A.Pakou, V.V.Parkar, M.Romoli, K.Rusek, A.M.Sanchez-BenItez, M.Sandoli, O.Sgouros, C.Signorini, R.Silvestri, F.Soramel, V.Soukeras, E.Stiliaris, E.Strano, L.Stroe, K.Zerva

Direct and compound-nucleus reaction mechanisms in the 7Be + 58Ni system at near-barrier energies

NUCLEAR REACTIONS 58Ni(7Be, 7Be), (7Be, 3He), (7Be, α), E=22 MeV, [7Be beam from 1H(7Li, 7Be), E=34.2 MeV using EXOTIC facility at LNL-Legnaro]; measured reaction products, angular distributions of 3He and 4He, quasielastic σ(θ), breakup σ(θ) using ΔE-E telescopes of the DINEX setup, part of the GLORIA detector array; deduced correlation plot of energy versus detection angle θlab, quasielastic σ(θ), reconstructed Q value spectrum. 58Ni(7Be, 8Be), (7Be, 6Be), E=22 MeV; deduced σ(θ) for neutron pickup and stripping processes. Monte Carlo simulations for the elastic scattering process and inelastic excitation. Optical-model, continuum-discretized-coupled-channel (CDCC) calculations using the code FRESCO, and DWBA calculations. Discussed role of breakup, 3He-stripping, 1n-stripping, and 1n-pickup processes.

doi: 10.1103/PhysRevC.92.024615
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetO2186.


2015ME03      Phys.Rev. C 91, 044317 (2015)

C.E.Mertin, D.D.Caussyn, A.M.Crisp, N.Keeley, K.W.Kemper, O.Momotyuk, B.T.Roeder, A.Volya

Single particle strengths and mirror states in 15N - 15O below 12.0 MeV

NUCLEAR REACTIONS 14N(d, p), E=16 MeV; measured proton and deuteron spectra, σ(θ) using ΔE-E telescopes at FSU tandem-linac accelerator facility. 15N; deduced levels, J, π, l-transfers. DWBA analysis. 12C(d, p)13C, E=16 MeV; measured proton spectra to identify 13C contaminant peaks in the higher excitation energy region. 15N, 15O; comparison of mirror states. Comparison with previous experimental data, and with shell model calculations.

doi: 10.1103/PhysRevC.91.044317
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC2161. Data from this article have been entered in the XUNDL database. For more information, click here.


2015PA24      Eur.Phys.J. A 51, 55 (2015)

A.Pakou, D.Pierroutsakou, M.Mazzocco, L.Acosta, X.Aslanoglou, A.Boiano, C.Boiano, D.Carbone, M.Cavallaro, J.Grebosz, N.Keeley, M.La Commara, C.Manea, G.Marquinez-Duran, I.Martel, C.Parascandolo, K.Rusek, A.M.Sanchez-Benitez, O.Sgouros, C.Signorini, F.Soramel, V.Soukeras, E.Stiliaris, E.Strano, D.Torresi, A.Trzcinska, Y.X.Watanabe, H.Yamaguchi

Total reaction cross sections for 8Li + 90Zr at near-barrier energies

NUCLEAR REACTIONS 90Zr(8Li, 8Li'), E=18.5-21.5 MeV; measured halo nucleus reaction products; deduced quasielastic scattering σ(θ), total reaction σ, ratio direct-to-total σ and systematics of total σ using data from other reactions; calculated quasielastic scattering σ(θ) using optical model with double-folded potentials based on BDM3Y1, ratio direct-to-total σ using CC.

doi: 10.1140/epja/i2015-15055-6
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetO2352.


2015PA33      Eur.Phys.J. A 51, 90 (2015)

A.Pakou, N.Keeley, D.Pierroutsakou, M.Mazzocco, L.Acosta, X.Aslanoglou, A.Boiano, C.Boiano, D.Carbone, M.Cavallaro, J.Grebosz, M.La Commara, C.Manea, G.Marquinez-Duran, I.Martel, C.Parascandolo, K.Rusek, A.M.Sanchez-Benitez, O.Sgouros, C.Signorini, F.Soramel, V.Soukeras, E.Stiliaris, E.Strano, D.Torresi, A.Trzcinska, Y.X.Watanabe, H.Yamaguchi

Important influence of single neutron stripping coupling on near-barrier 8Li + 90Zr quasi-elastic scattering

NUCLEAR REACTIONS 90Zr(8Li, 8Li'), E=18.5 MeV; measured Li ions using EXOTIC detector array telescopes; deduced σ(θ); calculated σ(θ) (also for 6,7Li+90Zr), B(E2) using no-coupling and CC with optical potential with double-folded real part and deformation from 6Li+90Zr; deduced strong coupling effect for single neutron stripping.

doi: 10.1140/epja/i2015-15090-3
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetO2352.


2015RU04      Phys.Rev. C 91, 044612 (2015)

K.Rusek, N.Keeley, K.W.Kemper, A.T.Rudchik

Effect of the exit reaction channels on 6Li+18O elastic scattering

NUCLEAR REACTIONS 6Li(18O, 6Li), (18O, 7Li), E=114 MeV; calculated elastic and one-neutron pickup σ(θ); deduced role of 6Li breakup and pickup reactions. Continuum discretized coupled-channel and coupled-reaction-channel (CRC) calculations with optical model potentials. Comparison with experimental data.

doi: 10.1103/PhysRevC.91.044612
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2015SO12      Phys.Rev. C 91, 057601 (2015)

V.Soukeras, A.Pakou, F.Cappuzzello, L.Acosta, C.Agodi, N.Alamanos, M.Bondi, D.Carbone, M.Cavallaro, A.Cunsolo, M.De Napoli, A.Di Pietro, J.P.Fernandez-Garcia, P.Figuera, M.Fisichella, A.Foti, N.Keeley, G.Marquinez-Duran, I.Martel, M.Mazzocco, D.Nicolosi, D.Pierroutsakou, K.Rusek, O.Sgouros, E.Stiliaris, E.Strano, D.Torresi

Reexamination of 6Li+p elastic scattering in inverse kinematics

NUCLEAR REACTIONS 1H(6Li, 6Li), E=16, 20, 25, 29 MeV; measured scattered 6Li spectra, σ(θ, E) using MAGNEX spectrometer at INFN-LNS-Catania accelerator facility. Comparison with previous experimental data, and with predictions of Jeukenne-Lejeune-Mahaux (JLM) and continuum discretized coupled-channel (CDCC) calculations.

doi: 10.1103/PhysRevC.91.057601
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetO2277.


2015TR06      Phys.Rev. C 92, 034619 (2015)

A.Trzcinska, E.Piasecki, K.Hagino, W.Czarnacki, P.Decowski, N.Keeley, M.Kisielinski, P.Koczon, A.Kordyasz, E.Koshchiy, M.Kowalczyk, B.Lommel, A.Stolarz, I.Strojek, K.Zerva

Quasielastic barrier distributions for the 20Ne + 58, 60, 61Ni systems: Influence of weak channels

NUCLEAR REACTIONS 58,60,62Ni(20Ne, 20Ne'), E=43-62 MeV; measured excitation function for back-scattered ions, σ(E) at Heavy Ion Laboratory, University of Warsaw; deduced barrier height distributions. Comparisons with predictions by coupled-channel (CC) calculations.

doi: 10.1103/PhysRevC.92.034619
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2015VA13      Phys.Rev. C 92, 024316 (2015)

M.Vandebrouck, J.Gibelin, E.Khan, N.L.Achouri, H.Baba, D.Beaumel, Y.Blumenfeld, M.Caamano, L.Caceres, G.Colo, F.Delaunay, B.Fernandez-Dominguez, U.Garg, G.F.Grinyer, M.N.Harakeh, N.Kalantar-Nayestanaki, N.Keeley, W.Mittig, J.Pancin, R.Raabe, T.Roger, P.Roussel-Chomaz, H.Savajols, O.Sorlin, C.Stodel, D.Suzuki, J.C.Thomas

Isoscalar response of 68Ni to α-particle and deuteron probes

NUCLEAR REACTIONS 2H(68Ni, d'), 4He(68Ni, α'), E=50 MeV/nucleon, [68Ni secondary beam from 9Be(70Zn, X), E=62.3 MeV/nucleon primary reaction, and using LISE3 separator at GANIL]; measured scattered particle spectra of recoiling ions, α and deuterons using active target MAYA which is a time projection chamber (TPC). 68Ni; deduced excitation-energy spectrum, angular distributions, L transfers, centroids of isoscalar giant monopole resonances (ISGMR and soft ISGMR), isoscalar giant dipole resonances (ISGDR) and isoscalar giant quadrupole resonance (ISGQR), proton distribution coming from deuteron breakup on 68Ni. Calculated angular distributions for 68Ni(d, d') and 68Ni(α, α') by DWBA approach. Discussed systematics of isoscalar giant resonances for 56,58,60,62,64,68Ni.

doi: 10.1103/PhysRevC.92.024316
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Data from this article have been entered in the XUNDL database. For more information, click here.


2014KE04      Eur.Phys.J. A 50, 145 (2014)

N.Keeley, K.W.Kemper, K.Rusek

Strong coupling effects in near-barrier heavy-ion elastic scattering

doi: 10.1140/epja/i2014-14145-3
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2014KE05      Phys.Rev. C 90, 044602 (2014)

N.Keeley, R.S.Mackintosh

Dynamic polarization potential and dynamical nonlocality in nuclear potentials: Nucleon-nucleus potential

NUCLEAR REACTIONS 40Ca(p, d), (n, d), E=30.3 MeV; calculated angular distributions; deduced dynamical polarization potential (DPP); investigated effects of non-locality induced by phonon couplings. Coupled-channel (CC) and distorted wave Born approximations (DWBA) calculations.

doi: 10.1103/PhysRevC.90.044602
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2014MA29      Acta Phys.Pol. B45, 363 (2014)

M.Mazzocco, D.Torresi, L.Acosta, A.Boiano, C.Boiano, N.Fierro, T.Glodariu, A.Guglielmetti, N.Keeley, M.La Commara, I.Martel, C.Mazzocchi, P.Molini, A.Pakou, C.Parascandolo, V.V.Parkar, N.Patronis, D.Pierroutsakou, M.Romoli, K.Rusek, A.M.Sanchez-Benitez, M.Sandoli, C.Signorini, R.Silvestri, F.Soramel, E.Stiliaris, E.Strano, L.Stroe, K.Zerva

Direct and Compound Nucleus Reactions for the System 7Be + 58Ni at Near-barrier Energies

NUCLEAR REACTIONS 58Ni(7Be, X)3He/4He, E=22.3 MeV; measured reaction products; deduced σ(θ). Comparison with PACE2 calculations.

doi: 10.5506/APhysPolB.45.363
Citations: PlumX Metrics


2014MA83      Phys.Rev. C 90, 044601 (2014)

R.S.Mackintosh, N.Keeley

Phonon coupling effects in proton scattering from 40Ca

NUCLEAR REACTIONS 40Ca(p, p), (p, p'), E=20-90 MeV; calculated dynamical polarization potential (DPP) with full coupling to the GQR, 3- state and multi-phonon states, inelastic scattering σ(E); deduced l-dependent undulatory nature of the contribution of phonon coupling. S-matrix to potential inversion method for coupled channel and optical model potential calculations.

doi: 10.1103/PhysRevC.90.044601
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2014ME04      Acta Phys.Pol. B45, 159 (2014)

C.E.Mertin, D.D.Caussyn, A.M.Crisp, N.Keeley, K.W.Kemper, O.Momotyuk, B.T.Roeder, A.Volya

Separation Between d5/2 and s1/2 Neutron Single Particle Strength in 15N

NUCLEAR REACTIONS 14N(d, p), E=16 MeV; measured reaction products, Ep, Ip; deduced σ(θ), spectroscopic factors. FRESCO calculations.

doi: 10.5506/APhysPolB.45.159
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2014RO26      Phys.Rev. C 90, 047601 (2014)

F.J.Rodriguez, J.A.Liendo, N.Keeley, K.W.Kemper, J.A.Mielgo, B.T.Roeder, W.D.Weintraub

TT20 analyzing powers from 12C(7Li, α)15N

NUCLEAR REACTIONS 12C(polarized 7Li, α)15N, E=34 MeV; measured Eα, Iα, transverse analyzing powers TT20(θ) using ΔE-E telescope detectors at FSU Tandem-Linear Accelerator (LINAC) facility. 15N; deduced levels, magnitude and shapes of analyzing power distributions for various Jπ values.

doi: 10.1103/PhysRevC.90.047601
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Data from this article have been entered in the XUNDL database. For more information, click here.


2014TR03      Acta Phys.Pol. B45, 383 (2014)

A.Trzcinska, E.Piasecki, W.Czarnacki, P.Decowski, N.Keeley, M.Kisielinski, S.Kliczewski, P.Koczon, A.Kordyasz, M.Kowalczyk, S.Khlebnikov, E.Koshchiy, T.Krogulski, B.Lommel, T.Loktev, M.Mutterer, K.Piasecki, I.Strojek, W.H.Trzaska, S.Smirnov, A.Stolarz, G.Tiourin

Barrier Height Distributions - the Influence of Weak Channels

doi: 10.5506/APhysPolB.45.383
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2014VA07      Phys.Rev.Lett. 113, 032504 (2014)

M.Vandebrouck, J.Gibelin, E.Khan, N.L.Achouri, H.Baba, D.Beaumel, Y.Blumenfeld, M.Caamano, L.Caceres, G.Colo, F.Delaunay, B.Fernandez-Dominguez, U.Garg, G.F.Grinyer, M.N.Harakeh, N.Kalantar-Nayestanaki, N.Keeley, W.Mittig, J.Pancin, R.Raabe, T.Roger, P.Roussel-Chomaz, H.Savajols, O.Sorlin, C.Stodel, D.Suzuki, J.C.Thomas

Measurement of the Isoscalar Monopole Response in the Neutron-Rich Nucleus 68Ni

NUCLEAR REACTIONS 4He(68Ni, α), E=50 MeV/nucleon; measured reaction products, Eα, Iα. 68Ni; deduced σ(θ), isoscalar monopole strength. DWBA and RPA transition densities analysis.

doi: 10.1103/PhysRevLett.113.032504
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetO2228. Data from this article have been entered in the XUNDL database. For more information, click here.


2013AL14      Phys.Rev. C 88, 034301 (2013)

T.Al Kalanee, J.Gibelin, P.Roussel-Chomaz, N.Keeley, D.Beaumel, Y.Blumenfeld, B.Fernandez-Dominguez, C.Force, L.Gaudefroy, A.Gillibert, J.Guillot, H.Iwasaki, S.Krupko, V.Lapoux, W.Mittig, X.Mougeot, L.Nalpas, E.Pollacco, K.Rusek, T.Roger, H.Savajols, N.de Sereville, S.Sidorchuk, D.Suzuki, I.Strojek, N.A.Orr

Structure of unbound neutron-rich 9He studied using single-neutron transfer

NUCLEAR REACTIONS 2H(8He, p), E=15 MeV/nucleon, [secondary 8He beam from C(13C, X), E=75 MeV/nucleon primary reaction]; 2H(16O, p), E=15 MeV/nucleon; measured proton spectra, kinetic energies and angles of recoiling protons, σ(θ) using MUST2 telescopes of Si-CsI detectors at GANIL facility. 9He, 17O; deduced levels from experimental missing mass spectra, J, π, widths, l-transfers, configurations, spectroscopic factors, parity inversion in 9He. DWBA and CCBA analyses of σ(θ) data. Reviewed previous measurements of level structure of 9He using different reactions. 16O(d, p) reaction in inverse kinematics used as a test case.

doi: 10.1103/PhysRevC.88.034301
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetO2169. Data from this article have been entered in the XUNDL database. For more information, click here.


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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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetO2149. Data from this article have been entered in the XUNDL database. For more information, click here.


2013KE06      Phys.Rev. C 88, 017602 (2013)

N.Keeley, K.W.Kemper, K.Rusek

Dynamic polarization potentials and dipole polarizabilities of 11Li, 6He and 6Li compared

NUCLEAR REACTIONS 208Pb(11Li, 11Li), E=29.8 MeV; 58Ni(11Li, 11Li), E=11.6 MeV; 208Pb(6Li, 6Li), E=29 MeV; 208Pb(6He, 6He), E=18 MeV; analyzed σ(θ) data by coupled discretized continuum channels (CDCC) calculations using FRESCO computer code; deduced dynamic polarization potentials (DPP), dipole polarizability factor α for 11Li. Dineutron model.

doi: 10.1103/PhysRevC.88.017602
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2013MA19      Acta Phys.Pol. B44, 467 (2013)

G.Marquinez-Duran, A.M.Sanchez-Benitez, I.Martel, L.Acosta, K.Rusek, M.A.G.Alvarez, R.Berjillos, M.J.G.Borge, A.Chbihi, C.Cruz, M.Cubero, J.A.Duenas, J.P.Fernandez-Garcia, B.Fernandez Martinez, J.L.Flores, J.Gomez-Camacho, N.Keeley, J.A.Labrador, M.Marques, A.M.Moro, M.Mazzocco, A.Pakou, V.V.Parkar, N.Patronis, V.Pesudo, D.Pierroutsakou, R.Raabe, R.Silvestri, N.Soic, L.Standylo, I.Strojek, O.Tengblad, R.Wolski, A.H.Ziad

Elastic Scattering of 8He + 208Pb at 22 MeV

NUCLEAR REACTIONS 208Pb(8He, 8He), E=22 MeV; measured reaction products; deduced σ, σ(θ). Global reaction array, comparison with optical model calculations.

doi: 10.5506/APhysPolB.44.467
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetO1980.


2013SG01      Int.J.Mod.Phys. E22, 1350073 (2013)

O.Sgouros, V.Soukeras, A.Pakou, N.Patronis, K.Zerva, N.Keeley, I.Strojek, A.Trzcinska, E.Piasecki, K.Rusek, E.Stiliaris, M.Mazzocco

Backward angle structure in the 20Ne+28Si quasielastic scattering

NUCLEAR REACTIONS 28Si(20Ne, 20Ne), E=42.5, 52.3 MeV; 28Si(20Ne, 24Mg), (20Ne, 16O), (20Ne, 12C), E=52.3 MeV; measured transfer reaction products; deduced spectroscopic amplitudes, σ, σ(θ). Comparison with coupled channels calculations.

doi: 10.1142/S0218301313500730
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetD0724.


2013ST13      Phys.Rev. C 87, 064603 (2013)

L.Standylo, L.Acosta, C.Angulo, R.Berjillos, J.A.Duenas, M.S.Golovkov, N.Keeley, T.Keutgen, I.Martel, M.Mazzocco, F.Perez-Bernal, A.M.Sanchez-Benitez, C.Signorini, M.Romoli, K.Rusek, R.Wolski

Breakup and neutron-transfer effects on 6He+206Pb elastic scattering below the Coulomb barrier

NUCLEAR REACTIONS 206Pb(6He, 6He), [6He secondary beam from 7Li(p, 2p), E=30 MeV primary reaction], E=18 MeV; measured α and 6He spectra, σ(θ) for α particles, α-yields using the LEDA array of Si detectors at CRCLN facility in Belgium. Analysis of data by continuum-discretized coupled-channels (CDCC), DWBA, and coupled reaction channels (CRC) calculations, including breakup effects, one-neutron and two-neutron transfers.

doi: 10.1103/PhysRevC.87.064603
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetO2151.


2013SU10      Phys.Rev. C 87, 054301 (2013)

D.Suzuki, A.Shore, W.Mittig, J.J.Kolata, D.Bazin, M.Ford, T.Ahn, F.D.Becchetti, S.Beceiro Novo, D.Ben Ali, B.Bucher, J.Browne, X.Fang, M.Febbraro, A.Fritsch, E.Galyaev, A.M.Howard, N.Keeley, W.G.Lynch, M.Ojaruega, A.L.Roberts, X.D.Tang

Resonant α scattering of 6He: Limits of clustering in 10Be

NUCLEAR REACTIONS 4He(6He, 6He), (6He, 6He'), (6He, 2n)8Be, [secondary 6He beam from 7Li(d, 3He), E=29.2 MeV primary reaction], E=15 MeV; measured reactions products, 6He spectra, elastic and inelastic σ(E, θ) using PAT-TPC system at Notre Dame TwinSol facility. 4,6He, 8Be; deduced levels, cross sections for g.s. and first 2+ states. 10Be; deduced level, resonance, J, π, α width. Discussed α clustering in high-spin states. Comparison with antisymmetric molecular dynamics calculations.

doi: 10.1103/PhysRevC.87.054301
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC2027. Data from this article have been entered in the XUNDL database. For more information, click here.


2013YA06      Phys.Rev. C 87, 044613 (2013), Pub.Note Phys.Rev. C 88, 019901 (2013)

Y.Y.Yang, J.S.Wang, Q.Wang, D.Y.Pang, J.B.Ma, M.R.Huang, J.L.Han, P.Ma, S.L.Jin, Z.Bai, Q.Hu, L.Jin, J.B.Chen, N.Keeley, R.Rusek, R.Wada, S.Mukherjee, Z.Y.Sun, R.F.Chen, X.Y.Zhang, Z.G.Hu, X.H.Yuan, X.G.Cao, Z.G.Xu, S.W.Xu, C.Zhen, Z.Q.Chen, Z.Chen, S.Z.Chen, C.M.Du, L.M.Duan, F.Fu, B.X.Gou, J.Hu, J.J.He, X.G.Lei, S.L.Li, Y.Li, Q.Y.Lin, L.X.Liu, F.D.Shi, S.W.Tang, G.Xu, X.Xu, L.Y.Zhang, X.H.Zhang, W.Zhang, M.H.Zhao, Z.Y.Guo, Y.H.Zhang, H.S.Xu, G.Q.Xiao

Elastic scattering of the proton drip-line nucleus 8B off a natPb target at 170.3 MeV

NUCLEAR REACTIONS Pb(8B, 8B), E=170.3 MeV, [secondary 8B beam from 9Be(12C, X), E=54.2 MeV/nucleon primary reaction]; measured reaction products, energy loss, time of flight, magnetic rigidity, σ(θ) at RIBLL-HRIFL facility in Lanzhou. Analysis of σ(θ) data by optical model using a single-folding-type potential, and by continuum discretized coupled-channels (CDCC) method. Effect of breakup-channel couplings. Comparison with previous experimental σ(θ) data for Pb(7Be, 7Be), E=125 MeV, and 208Pb(6Li, 6Li), E=99 MeV.

doi: 10.1103/PhysRevC.87.044613
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetS0085.


2012KE07      Phys.Rev. C 86, 014619 (2012)

N.Keeley, K.W.Kemper, K.Rusek

Bound state form factors from knockout in 10Be(d, t) neutron pickup

NUCLEAR REACTIONS 10Be(d, t)9Be, E=15 MeV; analyzed σ(θ) data using finite range DWBA, and coupled reaction channels (CRC) calculations using shell-model (SM), no-core shell model (NCSM), variational Monte Carlo (VMC) form factors, and continuum discretized coupled channels (CDCC) model for deuteron breakup. Discussed possible sources of ambiguity in the pickup calculations.

doi: 10.1103/PhysRevC.86.014619
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2012KE08      J.Phys.:Conf.Ser. 381, 012087 (2012)

N.Keeley

Elastic scattering a hundred years on; what can it tell us?

NUCLEAR REACTIONS 58Ni(8B, 8B), E=20.68, 23.4, 25.32, 27.23, 29.26 MeV; calculated σ(θ) using CDCC with and without coupling to 8B breakup to 7Be+p. Compared to data.

doi: 10.1088/1742-6596/381/1/012087
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2012MA02      Acta Phys.Pol. B43, 239 (2012)

G.Marquinez-Duran, A.M.Sanchez-Benitez, I.Martel, R.Berjillos, J.Duenas, V.V.Parkar, L.Acosta, K.Rusek, M.A.G.Alvarez, J.Gomez-Camacho, M.J.G.Borge, C.Cruz, M.Cubero, V.Pesudo, O.Tengblad, A.Chbihi, J.P.Fernandez-Garcia, B.Fernandez Martinez, J.A.Labrador, A.H.Ziad, J.L.Flores, N.Keeley, L.Standylo, I.Strojek, M.Marques, M.Mazzocco, A.Pakou, N.Patronis, D.Pierroutsakou, R.Silvestri, R.Raabe, N.Soic, R.Wolski

Scattering of 8He on 208Pb at Energies Around the Coulomb Barrier

NUCLEAR REACTIONS 208Pb(8He, X)4He/6He, E=18, 22 MeV; measured reaction products;deduced σ(θ). Comparison with optical model calculations.

doi: 10.5506/APhysPolB.43.239
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetO1980.


2012MA22      Phys.Rev. C 85, 064603 (2012), Erratum Phys.Rev. C 97, 069901 (2018)

R.S.Mackintosh, N.Keeley

Coupling effects in proton scattering from 40Ca

NUCLEAR REACTIONS 40Ca(polarized p, p), E=30.3 MeV; calculated dynamic polarization potential (DPP), analyzing powers, effect of (p, d) pickup couplings. Coupled reaction channel (CRC) calculations.

doi: 10.1103/PhysRevC.85.064603
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2012MO29      Phys.Lett. B 718, 441 (2012)

X.Mougeot, V.Lapoux, W.Mittig, N.Alamanos, F.Auger, B.Avez, D.Beaumel, Y.Blumenfeld, R.Dayras, A.Drouart, C.Force, L.Gaudefroy, A.Gillibert, J.Guillot, H.Iwasaki, T.Al Kalanee, N.Keeley, L.Nalpas, E.C.Pollacco, T.Roger, P.Roussel-Chomaz, D.Suzuki, K.W.Kemper, T.J.Mertzimekis, A.Pakou, K.Rusek, J.-A.Scarpaci, C.Simenel, I.Strojek, R.Wolski

New excited states in the halo nucleus 6He

NUCLEAR REACTIONS 1H(8He, t)6He, E=15.4 MeV/nucleon; measured reaction products, Et, It; deduced σ(θ), energy levels, J, π, resonances. Comparison with available data.

doi: 10.1016/j.physletb.2012.10.054
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetO2122. Data from this article have been entered in the XUNDL database. For more information, click here.


2012PI08      Phys.Rev. C 85, 054604 (2012); Pub.Note Phys.Rev. C 85, 059903 (2012)

E.Piasecki, W.Czarnacki, N.Keeley, M.Kisielinski, S.Kliczewski, A.Kordyasz, M.Kowalczyk, S.Khlebnikov, E.Koshchiy, T.Krogulski, T.Loktev, M.Mutterer, A.Piorkowska, K.Rusek, M.Sillanpaa, A.Staudt, I.Strojek, S.Smirnov, W.H.Trzaska, A.Trzcinska

Weak channels in backscattering of 20Ne on natNi, 118Sn, and 208Pb

NUCLEAR REACTIONS Ni(20Ne, X), E=51.7 MeV; 118Sn(20Ne, X), E=72.1 MeV; 208Pb(20Ne, X), E=102.0 MeV; measured particle spectra, time of flight, energy loss, transfer σ; deduced mass distribution of reaction products, inelastic Q-spectra. 90Zr(20Ne, X), E=62.8 MeV; 92Zr(20Ne, X), E=62.6 MeV; analyzed data. Comparison with coupled-channels (CC) calculations.

doi: 10.1103/PhysRevC.85.054604
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2012PI09      Phys.Rev. C 85, 054608 (2012); Pub.Note Phys.Rev. C 85, 059902 (2012)

E.Piasecki, L.Swiderski, N.Keeley, M.Kisielinski, M.Kowalczyk, S.Khlebnikov, T.Krogulski, K.Piasecki, G.Tiourin, M.Sillanpaa, W.H.Trzaska, A.Trzcinska

Smoothing of structure in the fusion and quasielastic barrier distributions for the 20Ne + 208Pb system

NUCLEAR REACTIONS 208Pb(20Ne, 20Ne), (20Ne, X), E=93-117 MeV; measured time of flight spectrum for fission fragments, fusion σ(E), quasielastic scattering σ(E); deduced fusion and quasielastic barrier height distributions. Comparison with coupled-channels calculations.

doi: 10.1103/PhysRevC.85.054608
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2012ST03      Acta Phys.Pol. B43, 339 (2012)

I.Strojek, W.Czarnacki, W.Gawlikowicz, N.Keeley, M.Kisielinski, S.Kliczewski, A.Kordyasz, E.Koshchiy, M.Kowalczyk, E.Piasecki, A.Piorkowska, K.Rusek, R.Siudak, A.Staudt, A.Trzcinska

Structure Effects in 20Ne + 208Pb Quasi-elastic Scattering

NUCLEAR REACTIONS 208Pb(20Ne, 20Ne'), E=108.6, 115 MeV; measured reaction products, Eγ, Iγ; deduced σ, quasi-elastic barrier height distribution, nuclear deformation length. Comparison with coupled-channel calculations.

doi: 10.5506/APhysPolB.43.339
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2011BE19      Int.J.Mod.Phys. E20, 943 (2011)

C.Beck, N.Rowley, P.Papka, S.Courtin, M.Rousseau, F.A.Souza, N.Carlin, F.Liguori Neto, M.M.De Moura, M.G.Del Santo, A.A.I.Suade, M.G.Munhoz, E.M.Szanto, A.Szanto de Toledo, N.Keeley, A.Diaz-Torres, K.Hagino

Cluster model for reactions induced by weakly bound and/or exotic halo nuclei with medium-mass targets

doi: 10.1142/S0218301311019027
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