NSR Query Results
Output year order : Descending NSR database version of April 11, 2024. Search: Author = V.Guimaraes Found 124 matches. Showing 1 to 100. [Next]2024WA04 Phys.Rev. C 109, 014624 (2024) K.Wang, Y.Y.Yang, Jin Lei, A.M.Moro, V.Guimaraes, J.G.Li, F.F.Duan, Z.Y.Sun, G.Yang, D.Y.Pang, S.W.Xu, J.B.Ma, P.Ma, Z.Bai, Q.Liu, J.L.Lou, H.J.Ong, B.F.Lv, S.Guo, M.Kumar Raju, X.H.Wang, R.H.Li, X.X.Xu, Z.Z.Ren, Y.H.Zhang, X.H.Zhou, Z.G.Hu, H.S.Xu Elastic scattering and breakup reactions of the mirror nuclei 12B and 12N on 208Pb using ab initio structure inputs
doi: 10.1103/PhysRevC.109.014624
2024YA05 Chin.Phys.C 48, 034001 (2024) G.Yang, F.-F.Duan, K.Wang, Y.-Y.Yang, Zh.-Y.Sun, V.Guimaraes, D.-Y.Pang, W.-D.Chen, L.Jin, Sh.-W.Xu, J.-B.Ma, P.Ma, Zh.Bai, L.-H.Wang, Q.Liu, H.-J.Ong, B.-F.Lv, S.Guo, M.K.Raju, X.-H.Wang, R.-H.Li, Y.-H.Zhang, X.-H.Zhou, Zh.-G.Hu, H.-Sh.Xu Elastic scattering of 13C and 14C isotopes on a 208Pb target at energies of approximately five times the Coulomb barriers NUCLEAR REACTIONS 208Pb(13C, 13C), E=340 MeV; 208Pb(14C, 14C), E=294, 342 MeV; measured reaction products; deduced σ(θ) within the optical model and continuum-discretized coupled-channels (CDCC) framework. Comparison with available data. The Heavy-Ion Research Facility in Lanzhou (HIRFL), the National Laboratory of Heavy Ion Research of the Institute of Modern Physics.
doi: 10.1088/1674-1137/ad1678
2022AN21 XLIV Brazilian Meeting on Nuclear Physics, Brazil, 9-11 Nov 2021 p.012041 (2022); J.Phys.:Conf.Ser. 2340 M.B.Angelo, V.Guimaraes, M.Assuncao, L.F.Canto, J.Lubian Damping of Mott oscillations as a guide for planning a 6Li +6Li scattering experiment NUCLEAR REACTIONS 6Li(6Li, 6Li), E=6-10 MeV; analyzed available data; deduced σ(θ), Sfresco corrections for the potentials depths and the subsequent Transverse Isotropy (TI) energies.
doi: 10.1088/1742-6596/2340/1/012041
2022BA37 XLIV Brazilian Meeting on Nuclear Physics, Brazil, 9-11 Nov 2021 p.012040 (2022); J.Phys.:Conf.Ser. 2340 A.Barioni, G.Kaur, J.Alcantara-Nunez, M.Assuncao, V.Guimaraes, A.L.Lara, A.Lepine-Szily, R.Lichtenthaler, R.Linares, D.R.Mendes, K.C.C.Pires, O.C.B.Santos, A.S.Serra, J.M.B.Shorto, U.Umbelino, V.A.B.Zagatto, E.O.N.Zevallos, J.C.Zamora Two-neutron transfer as a tool to study pairing correlations in nuclei NUCLEAR REACTIONS 12C, 19F(6He, 6He), (6He, X), (α, α), (α, X), E=20 MeV; measured reaction products, Eα, Iα; deduced σ(θ), feasibility of two-neutron transfer reactions. RIBRAS facility.
doi: 10.1088/1742-6596/2340/1/012040
2022GI05 Phys.Rev. C 105, L051301 (2022) V.Girard Alcindor, A.Mercenne, I.Stefan, F.de Oliveira Santos, N.Michel, M.Ploszajczak, M.Assie, A.Lemasson, E.Clement, F.Flavigny, A.Matta, D.Ramos, M.Rejmund, J.Dudouet, D.Ackermann, P.Adsley, M.Assuncao, B.Bastin, D.Beaumel, G.Benzoni, R.Borcea, A.J.Boston, D.Brugnara, L.Caceres, B.Cederwall, I.Celikovic, V.Chudoba, M.Ciemala, J.Collado, F.C.L.Crespi, G.D'Agata, G.De France, F.Delaunay, C.Diget, C.Domingo-Pardo, J.Eberth, C.Fougeres, S.Franchoo, F.Galtarossa, A.Georgiadou, J.Gibelin, S.Giraud, V.Gonzalez, N.Goyal, A.Gottardo, J.Goupil, S.Grevy, V.Guimaraes, F.Hammache, L.J.Harkness-Brennan, H.Hess, N.Jovancevic, D.S.Judson Oliver, O.Kamalou, A.Kamenyero, J.Kiener, W.Korten, S.Koyama, M.Labiche, L.Lalanne, V.Lapoux, S.Leblond, A.Lefevre, C.Lenain, S.Leoni, H.Li, A.Lopez-Martens, A.Maj, I.Matea, R.Menegazzo, D.Mengoni, A.Meyer, B.Million, B.Monteagudo, P.Morfouace, J.Mrazek, M.Niikura, J.Piot, Zs.Podolyak, C.Portail, A.Pullia, B.Quintana, F.Recchia, P.Reiter, K.Rezynkina, T.Roger, J.S.Rojo, F.Rotaru, M.D.Salsac, A.M.Sanchez-Benitez, E.Sanchis, M.Senyigit, N.de Sereville, M.Siciliano, J.Simpson, D.Sohler, O.Sorlin, M.Stanoiu, C.Stodel, D.Suzuki, C.Theisen, D.Thisse, J.C.Thomas, P.Ujic, J.J.Valiente-Dobon, M.Zielinska New narrow resonances observed in the unbound nucleus 15F NUCLEAR REACTIONS 1H(14O, p), E=7.64 MeV/nucleon; 1H(14O, 2p), E=7.42 MeV/nucleon; measured reaction products Ep, Ip, Eγ, Iγ, protons angular distributions, pp-coin, γγ-coin, pγ-coin; deduced σ(θ), resonances properties of 14O+p system - energy, spin and width, spectroscopic factors, major amplitudes of channels. 15F; deduced levels, J, π, configurations. Data has been analyzed and interpreted in the framework of the Gamow shell model (GSM) with the coupled-channel representation (GSMCC). Beam provided by SPIRAL1 facility (GANIL). Detectors: MUST2 (telescope composed of DSSD and CsI array) for (14O, p) reaction and MUGAST array (MUST2+VAMOS magnetic spectrometer+AGATA HPGE-array).
doi: 10.1103/PhysRevC.105.L051301
2022KA10 Phys.Rev. C 105, 024609 (2022) G.Kaur, V.Guimaraes, J.C.Zamora, M.Assuncao, J.Alcantara-Nunez, A.L.de Lara, E.O.N.Zevallos, J.B.Ribeiro, R.Lichtenthaler, K.C.C.Pires, O.C.B.Santos, V.Morcelle, R.J.deBoer New resonances in 11C above the 10B + p threshold investigated by inverse kinematic resonant scattering NUCLEAR REACTIONS 1H(10B, p), E=37.2 MeV; measured reaction products, Ep, Ip, angular distributions; deduced σ, σ(θ). 11C; deduced resonances, J, π, widths. R-matrix analysis. Comparison of level structure to 11B mirror nucleus. Beam from Radioactive Ion Beams in Brazil (RIBRAS) facility.
doi: 10.1103/PhysRevC.105.024609
2022KA39 XLIV Brazilian Meeting on Nuclear Physics, Brazil, 9-11 Nov 2021 p.012042 (2022); J.Phys.:Conf.Ser. 2340 G.Kaur, V.Guimaraes, J.C.Zamora, M.Assuncao, J.Alcantara-Nunez, A.L.de Lara, E.O.N.Zevallos, J.B.Ribeiro, R.Lichtenthaler, K.C.C.Pires, O.C.B.Santos, V.Morcelle, R.J.deBoer Resonant scattering measurement for 11C using thick target in inverse kinematics NUCLEAR REACTIONS 1H(10B, α), (10B, 3He), (10B, X)11C, E=35.93 MeV; measured reaction products; deduced σ(θ). RIBRAS facility, IFUSP, Sao Paulo.
doi: 10.1088/1742-6596/2340/1/012042
2022NI11 XLIV Brazilian Meeting on Nuclear Physics, Brazil, 9-11 Nov 2021 p.012038 (2022); J.Phys.:Conf.Ser. 2340 P.C.Nistal, V.Guimaraes, J.Lubian Distance analysis of elastic scattering data of light projectiles on 27Al target NUCLEAR REACTIONS 27Al(6Li, 6Li), (7Li, 7Li), E=6-10 MeV; 27Al(16O, 16O), E=42, 47 MeV; 27Al(12C, 12C), E=21 MeV; 27Al(9Be, 9Be), (6He, 6He), E=9.5-14 MeV; analyzed available data; deduced σ, critical-interaction and strong-absorption distances.
doi: 10.1088/1742-6596/2340/1/012038
2022RI05 XLIV Brazilian Meeting on Nuclear Physics, Brazil, 9-11 Nov 2021 p.012039 (2022); J.Phys.:Conf.Ser. 2340 J.B.Ribeiro, V.Guimaraes, G.Kaur, J.C.Zamora R-matrix parameters evaluation for direct and indirect kinematics data using AZURE2 NUCLEAR REACTIONS 12C(p, p), E not given; analyzed available data; deduced σ using R-matrix analyses, the code AZURE2.
doi: 10.1088/1742-6596/2340/1/012039
2022WA16 Phys.Rev. C 105, 054616 (2022) K.Wang, Y.Y.Yang, V.Guimaraes, D.Y.Pang, F.F.Duan, Z.Y.Sun, J.Lei, G.Yang, S.W.Xu, J.B.Ma, Q.Liu, Z.Bai, H.J.Ong, B.F.Lv, S.Guo, X.H.Wang, R.H.Li, M.Kumar Raju, Z.G.Hu, H.S.Xu Elastic scattering investigation of radioactive 13B and 13O projectiles on a 208Pb target at intermediate energies NUCLEAR REACTIONS 208Pb(13B, 13B), E=254 MeV; 208Pb(13O, 13O), E=413 MeV; measured reaction products, time-of-flight, magnetic rigidity, angular distributions; deduced σ(θ). 13B, 13O; deduced proton, neutron and matter rms radii. Optical model analysis with Sao Paulo and Pang global potentials. Comparison to continuum discretized coupled channels (CDCC) calculations. Beams were produced by fragmentation of a primary 59.54 MeV/nucleon 16O beam delivered by the Heavy-Ion Research Facility in Lanzhou (HIRFL).
doi: 10.1103/PhysRevC.105.054616
2022ZA03 Phys.Rev. C 106, 014603 (2022) J.C.Zamora, J.L.Ferreira, A.Barioni, E.N.Cardozo, D.Abriola, A.Arazi, M.Assuncao, E.de Barbara, M.A.Cardona, V.Guimaraes, D.Hojman, G.V.Marti, D.R.Mendes, A.J.Pacheco, K.C.C.Pires, D.Ramos, O.C.B.Santos, J.Lubian Role of direct mechanism in two-nucleon T=0 transfer reactions in light nuclei using the (6Li, α) probe NUCLEAR REACTIONS 12C, 19F(6Li, α), (6Li, 6Li), E=20 MeV; measured reaction products, Eα, Iα, angular distribution; deduced σ(θ) for elastic scattering and isoscalar np-transfer reactions, contributions from direct and sequential reaction mechanism yo the σ, population of particular bound and unbound states in daughter nuclei. Data analysis with coupled-reaction-channels (CRC) approach. Sequential np-transfer mechanism was investigated with coupled-channels Born approximation (CCBA) calculations. Systematics of np-transfer σ obtained with different probes - (α, d), (6Li, α) and (3He, p). Detector setup composed of an array of eight surface-barrier detectors and four silicon telescopes at TANDAR facility.
doi: 10.1103/PhysRevC.106.014603
2021AD06 Phys.Rev. C 103, 035804 (2021) P.Adsley, F.Hammache, N.de Sereville, V.Alcindor, M.Assie, D.Beaumel, M.Chabot, M.Degerlier, C.Delafosse, T.Faestermann, F.Flavigny, S.P.Fox, R.Garg, A.Georgiadou, S.A.Gillespie, J.Guillot, V.Guimaraes, A.Gottardo, R.Hertenberger, J.Kiener, A.M.Laird, A.Lefebvre-Schuhl, I.Matea, A.Meyer, M.Mahgoub, L.Olivier, L.Perrot, J.Riley, I.Sivacek, I.Stefan, V.Tatischeff, H.-F.Wirth Charged-particle branching ratios above the neutron threshold in 19F: Constraining 15N production in core-collapse supernovae COMPILATION 19F; compiled data from the ENSDF database and from different nuclear reactions in literature for levels, J, π, Γ, Γp, and Γα. NUCLEAR REACTIONS 19F(p, p'), E=16, 15 MeV; measured E(p), I(p), πα- and pp-coin using the Q3D magnetic spectrograph at Munich at E(p)=16 MeV, and Enge split-pole magnetic spectrometer, and double-sided silicon strip detector (DSSSD) detectors at Orsay at E(p)=15 MeV. 19F; deduced levels between 10.091 and 10.676 MeV in the region of astrophysical interest, width, branching ratios for proton and α decays from levels above the neutron binding energy in 19F. 15N, 18O; deduced energies of the emitted particles, matrices of experimental and simulated coincidence events from α and proton decays of neutron-unbound states in 19F. Relevance to 18F(n, α)15N and 18F(n, p)18O reaction rates for abundances of 15N and 18O in the helium-burning shell during core-collapse supernovae.
doi: 10.1103/PhysRevC.103.035804
2021AL17 Eur.Phys.J. A 57, 196 (2021) N.Alamanos, C.Bertulani, V.Guimaraes Topical issue on cluster structure and dynamics of nuclei: a tribute to Mahir Hussein
doi: 10.1140/epja/s10050-021-00511-x
2021GI06 Eur.Phys.J. A 57, 93 (2021) V.Girard Alcindor, I.Stefan, F.de Oliveira Santos, O.Sorlin, D.Ackermann, P.Adsley, J.C.Angelique, M.Assie, M.Assuncao, D.Beaumel, E.Berthoumieux, R.Borcea, L.Caceres, I.Celikovic, M.Ciemala, V.Chudoba, G.D'Agata, F.de Grancey, G.Dumitru, F.Flavigny, C.Fougeres, S.Franchoo, A.Georgiadou, N.Goyal, S.Grevy, J.Guillot, V.Guimaraes, F.Hammache, O.Kamalou, J.Kiener, S.Koyama, L.Lalanne, V.Lapoux, I.Matea, A.Matta, A.Meyer, N.Michel, P.Morfouace, J.Mrazek, F.Negoita, M.Niikura, D.Pantelica, L.Perrot, C.Petrone, J.Piot, C.Portail, T.Roger, F.Rotaru, A.M.Sanchez-Benitez, N.de Sereville, M.Stanoiu, C.Stodel, K.Subotic, D.Suzuki, V.Tatischeff, J.C.Thomas, P.Ujic, D.Verney Probing nuclear forces beyond the nuclear drip line: the cases of 16F and 15F. A Tribute to Mahir Hussein NUCLEAR STRUCTURE 15,16F, 16N, 15C; analyzed available data; deduced strength of the nucleon-nucleon effective interaction, the mirror symmetry of the n-p interaction.
doi: 10.1140/epja/s10050-021-00410-1
2021GU11 Eur.Phys.J. A 57, 90 (2021) V.Guimaraes, E.N.Cardozo, J.Lubian, M.Assuncao, K.C.C.Pires, L.F.Canto, B.Mukeru, G.Kaur, E.F.Aguilera Role of cluster configurations in the elastic scattering of light projectiles on 58Ni and 64Zn targets: a phenomenological analysis NUCLEAR REACTIONS 58Ni(16O, 16O), E=31-45 MeV; 64Zn(9Be, 9Be), (11Be, 11Be), E=17-28.7 MeV; analyzed available data; deduced σ.
doi: 10.1140/epja/s10050-021-00403-0
2021KU12 Eur.Phys.J. A 57, 87 (2021) Y.Kucuk, V.Guimaraes, B.V.Carlson Towards a systematic optical model potential for A = 8 projectiles NUCLEAR STRUCTURE 8B, 8Li, 8He; analyzed available data; deduced potential set using a Woods-Saxon potential shape; calculated σ(θ).
doi: 10.1140/epja/s10050-021-00405-y
2021LI22 Phys.Rev. C 103, 044613 (2021) R.Linares, M.Sinha, E.N.Cardozo, V.Guimaraes, G.V.Rogachev, J.Hooker, E.Koshchiy, T.Ahn, C.Hunt, H.Jayatissa, S.Upadhyayula, B.Roeder, A.Saastomoinen, J.Lubian, M.Rodriguez-Gallardo, J.Casal, K.C.C.Pires, M.Assuncao, Y.Penionzhkevich, S.Lukyanov Elastic scattering measurements for the 10C+ 208Pb system at Elab = 66 MeV NUCLEAR REACTIONS 208Pb(10C, 10C), E=66 MeV, [10C secondary beam from 1H(10B, 10C), E=9.6 MeV/nucleon primary reaction, followed by selection of 10C beam by the Momentum Achromatic Recoil Spectrometer (MARS) at the K500 superconducting Cyclotron Institute of Texas A and M University]; measured elastically scattered 10C ions, angular distribution of scattered 10C, total σ using ΔE-E telescope of double-sided silicon strip detectors (DSSSDs); deduced suppression of the Fresnel peak. Comparison with optical model, coupled channels, and 3-body and 4-body continuum-discretized coupled-channels (CDCC) calculations using 9B+p, 6Be+α, and 8Be+p+p cluster configurations of 10C with a Brunnian (super-Borromean) structure; analyzed reaction cross sections in literature for the several projectiles on 208Pb target.
doi: 10.1103/PhysRevC.103.044613
2021RI04 Phys.Rev. C 103, 015807 (2021) J.E.Riley, A.M.Laird, N.de Sereville, A.Parikh, S.P.Fox, F.Hammache, I.Stefan, P.Adsley, M.Assie, B.Bastin, F.Boulay, A.Coc, S.Franchoo, R.Garg, S.A.Gillespie, V.Guimaraes, C.Hamadache, N.Hubbard, J.Kiener, A.Lefebvre-Schuhl, F.de Oliveira Santos, A.Remadi, L.Perrot, D.Suzuki, G.Verde, V.Tatischeff, M.Williams Sub-threshold states in 19Ne relevant to 18F(p, α)15O NUCLEAR REACTIONS 19F(3He, t)19Ne, E=25 MeV; measured E(t), I(t) using Enge Split-pole magnetic spectrometer, α and protons from the decay of resonant states in 19Ne, tα-coin, tp-coin, tα(θ), tp(θ) using an array of six double-sided silicon strip detectors (DSSSDs) for α and protons at the ALTO tandem accelerator facility in Orsay. 19Ne; deduced levels, resonances, J, π, Γα/Γ branching ratios. 18F(p, α)15O, E(cm)<1.6 MeV; deduced astrophysical S-factor by R-matrix analysis, proton asymptotic normalization coefficient (ANC) for 1/2+ state. Comparison with predictions of generator coordinate method (GCM).
doi: 10.1103/PhysRevC.103.015807
2021SA25 Phys.Rev. C 103, 064601 (2021) O.C.B.Santos, R.Lichtenthaler, K.C.C.Pires, U.Umbelino, E.O.N.Zevallos, A.L.de Lara, A.S.Serra, V.Scarduelli, J.Alcantara-Nunez, V.Guimaraes, A.Lepine-Szily, J.C.Zamora, A.M.Moro, S.Appannababu, M.Assuncao, A.Barioni, R.Linares, V.A.B.Zagatto, P.N.de Faria, M.C.Morais, V.Morcelle, J.M.B.Shorto, J.Lei Evidence of the effect of strong stripping channels on the dynamics of the 8Li + 58Ni reaction NUCLEAR REACTIONS 58Ni(8Li, 8Li), (8Li, 8Li'), (8Li, 7Li), E=23.9, 26.1, 28.7, 30 MeV, [secondary 8Li beam produced in 9Be(7Li, 8Li), E=26-32 MeV using the RIBRAS facility at the 8-UD Pelletron accelerator of the University of Sao Paulo]; measured reaction products, two-dimensional ΔE-E particle spectra, elastic σ(θ). Comparison with optical model and continuum discretized coupled channels (CDCC) calculations for the elastic and nonelastic breakup or particle-transfer processes.
doi: 10.1103/PhysRevC.103.064601
2021WA12 Phys.Rev. C 103, 024606 (2021) K.Wang, Y.Y.Yang, A.M.Moro, V.Guimaraes, J.Lei, D.Y.Pang, F.F.Duan, J.L.Lou, J.C.Zamora, J.S.Wang, Z.Y.Sun, H.J.Ong, X.Liu, S.W.Xu, J.B.Ma, P.Ma, Z.Bai, Q.Hu, X.X.Xu, Z.H.Gao, G.Yang, S.Y.Jin, Y.H.Zhang, X.H.Zhou, Z.G.Hu, H.S.Xu, for the RIBLL Collaboration Elastic scattering and breakup reactions of the proton drip-line nucleus 8B on 208Pb at 238 MeV NUCLEAR REACTIONS 208Pb(3He, 3He), E=55 MeV; 208Pb(8B, 8B), (8B, X), E=238 MeV; 208Pb(7Be, 7Be), (7Be, X), E=175 MeV, [3He, 7Be and 8B secondary beams from 9Be(12C, X), E=59.7 MeV primary reaction followed by ΔE-E particle identification of fragments at RIBLL-HIRFL-Lanzhou facility]; measured reaction products, particle spectra, using double-sided silicon strip detectors (DSSDs) and a CsI(Tl) crystal array; deduced σ(θ) for elastic scattering and inelastic breakup (NEB) of 8B and 7Be, no significant Coulomb rainbow suppression. Comparison with optical model and continuum discretized coupled channels (CDCC) calculations.
doi: 10.1103/PhysRevC.103.024606
2021ZA03 Phys.Lett. B 816, 136256 (2021) J.C.Zamora, V.Guimaraes, G.V.Rogachev, S.Ahn, J.Lubian, E.N.Cardozo, E.Aboud, M.Assuncao, M.Barbui, J.Bishop, A.Bosh, J.Hooker, C.Hunt, H.Jayatissa, E.Koshchiy, S.Lukyanov, R.O'Dwyer, Y.Penionzhkevich, B.T.Roeder, A.Saastamoinen, S.Upadhyayula Direct fusion measurement of the 8B proton-halo nucleus at near-barrier energies NUCLEAR REACTIONS 40Ar(8B, X), E=5.1 MeV/nucleon; measured reaction products; deduced fusion σ, barrier parameters. Universal Fusion Function (UFF) parameterization, comparison with available data.
doi: 10.1016/j.physletb.2021.136256
2020CA31 Eur.Phys.J. A 56, 281 (2020) L.F.Canto, V.Guimaraes, J.Lubian, M.S.Hussein The total reaction cross section of heavy-ion reactions induced by stable and unstable exotic beams: the low-energy regime NUCLEAR REACTIONS 208Pb(16O, 16O), E not given; 12C(12C, X)24Mg, E<40 MeV; 28Si(16O, X), E(cm)=35 MeV; 208Pb(16O, X)224Th, E(cm)<120 MeV; analyzed available data; deduced σ.
doi: 10.1140/epja/s10050-020-00277-8
2020DU02 Chin.Phys.C 44, 024001 (2020) F.-F.Duan, Y.-Y.Yang, D.-Y.Pang, B.-T.Hu, J.-S.Wang, K.Wang, G.Yang, V.Guimaraes, P.Ma, S.-W.Xu, X.-Q.Liu, J.-B.Ma, Z.Bai, Q.Hu, S.-Y.Jin, X.-X.Sun, J.-S.Yao, H.-K.Qi, Z.-Y.Sun Experimental study of the elastic scattering of 10Be on 208Pb at the energy of around three times the Coulomb barrier NUCLEAR REACTIONS 208Pb(8Be, 8Be), E=127 MeV; measured reaction products; deduced σ, optical model parameters.
doi: 10.1088/1674-1137/44/2/024001
2020DU18 Phys.Lett. B 811, 135942 (2020) F.F.Duan, Y.Y.Yang, K.Wang, A.M.Moro, V.Guimaraes, D.Y.Pang, J.S.Wang, Z.Y.Sun, J.Lei, A.Di Pietro, X.Liu, G.Yang, J.B.Ma, P.Ma, S.W.Xu, Z.Bai, X.X.Sun, Q.Hu, J.L.Lou, X.X.Xu, H.X.Li, S.Y.Jin, H.J.Ong, Q.Liu, J.S.Yao, H.K.Qi, C.J.Lin, H.M.Jia, N.R.Ma, L.J.Sun, D.X.Wang, Y.H.Zhang, X.H.Zhou, Z.G.Hu, H.S.Xu Scattering of the halo nucleus 11Be from a lead target at 3.5 times the Coulomb barrier energy NUCLEAR REACTIONS 208Pb(11Be, 11Be), (11Be, X), E=140 MeV; 208Pb(10Be, X), (10Be, X), E=127 MeV; 208Pb(9Be, 9Be), (9Be, X), E=88 MeV; measured reaction products. 9,10,11Be; deduced σ(θ), σ(E), σ. Comparison with continuum discretized coupled channel (CDCC) as well as by the XCDCC calculations.
doi: 10.1016/j.physletb.2020.135942
2019AP01 Phys.Rev. C 99, 014601 (2019) S.Appannababu, R.Lichtenthaler, M.A.G.Alvarez, M.Rodriguez-Gallardo, A.Lepine-Szily, K.C.C.Pires, O.C.B.Santos, U.U.Silva, P.N.de Faria, V.Guimaraes, E.O.N.Zevallos, V.Scarduelli, M.Assuncao, J.M.B.Shorto, A.Barioni, J.Alcantara-Nunez, V.Morcelle Two-neutron transfer in the 6He + 120Sn reaction NUCLEAR REACTIONS 120Sn(6He, α), E=20.3, 22.2, 22.4, 24.5 MeV; 120Sn(6He, 6He), E=22.2 MeV, [secondary 6He beam from 9Be(7Li, 6He) primary reaction]; measured reaction products, Eα, Iα, 6He scattered particles, differential σ(E, θ), and σ(θ) for elastic scattering using RIBRAS facility at Sao Paulo University; deduced Q-value centroids, transferred angular momentum, dependence of excitation energy of the residual system on the transferred angular momentum using Brink's formula, and square of the final angular momentum. Comparison with four body continuum discretized coupled channel (CDCC) calculations. Discussed formation of di-nuclear rotating system that could be formed after the reaction.
doi: 10.1103/PhysRevC.99.014601
2019BA40 J.Phys.(London) G46, 095103 (2019) A.R.Balabekyan, G.S.Karapetyan, N.A.Demekhina, S.V.Gaginyan, J.R.Drnoyan, V.I.Zhemenik, J.Adam, L.Zavorka, A.A.Solnyshkin, V.M.Tsoupko-Sitnikov, J.Khushvaktov, V.Pronskikh, V.M.Zhamkochyan, V.Guimaraes, A.Deppman Spallation reactions induced by 4.4 GeV deuterons on lead isotopes NUCLEAR REACTIONS 204,206,207,208Pb(d, X)189Pt/191Pt/194Au/196Au/83Rb/88Y/95Nb/103Ru/46Sc/48Sc/48V/22Na/24Na/43K/48Sc/48Sc/48V/54Mn/58Co/59Fe/74As/75Se/76Kr/83Rb/84Rb/85Sr/86Zr/87Y/88Y/89Zr/95Nb/95Tc/99Rh/103Ru/105Ag/106Ag/113Sn/119Te/121Te/126Sb/127Xe/132Cs/139Ce/143Pm/144Pm/145Eu/146Gd/147Eu/148Eu/149Gd/153Gd/155Tb/155Dy/165Tm/167Tm/169Lu/169Yb/170Hf/171Lu/177Lu/181Re/183Re/183Os/185Os/185Ir/186Ir/186Pt/188Pt/190Ir/192Hg/192Au/193Hg/195Au/197Hg/198Au/198Tl/199Tl/200Tl/201Tl/201Pb/202Tl/203Hg/203Pb/203Bi/204Bi/205Bi/206Bi, E=4.4 GeV; measured reaction products, Eγ, Iγ; deduced σ.
doi: 10.1088/1361-6471/ab2bce
2019GU26 Phys.Rev. C 100, 034603 (2019) V.Guimaraes, E.N.Cardozo, V.B.Scarduelli, J.Lubian, J.J.Kolata, P.D.O'Malley, D.W.Bardayan, E.F.Aguilera, E.Martinez-Quiroz, D.Lizcano, A.Garcia-Flores, M.Febbraro, C.C.Lawrence, J.Riggins, R.O.Torres-Isea, P.N.de Faria, D.S.Monteiro, E.S.Rossi, N.N.Deshmukh Strong coupling effect in the elastic scattering of the 10C + 58Ni system near barrier NUCLEAR REACTIONS 58Ni(10C, 10C), (10C, 10C'), (10C, X)4He/7Li/7Be/10B/10C/12N, E=35.3 MeV, [secondary 10C beam from 3He(10B, 10C), E=54.0 MeV primary reaction at the Nuclear Science Laboratory of Notre Dame]; measured reaction products, particle identification spectrum, scattered 10C particles using three ΔE-E telescopes with silicon planar detectors, σ(θ); deduced differential σ; the results analyzed via coupled-channels, coupled-reaction-channels, and continuum-discretized coupled-channels (CDCC) calculations, with the consideration of 9B+p and 6Be+α channels as cluster configurations for the 10C projectile in CDCC approach. The 2+ inelastic transition in 10C in the projectile shown to be of crucial importance in describing the cross section data.
doi: 10.1103/PhysRevC.100.034603
2019UM01 Phys.Rev. C 99, 064617 (2019) U.Umbelino, K.C.C.Pires, R.Lichtenthaler, V.Scarduelli, G.A.Scotton, A.Lepine-Szily, V.Guimaraes, J.Lubian, B.Paes, J.L.Ferreira, M.A.G.Alvarez, J.M.B.Shorto, S.Appannababu, M.Assuncao, R.P.Condori, V.Morcelle Two-neutron transfer in 7Be + 9Be collisions NUCLEAR REACTIONS 9Be(7Be, 7Be), (7Be, 9Be), E=23.1 MeV, [7Be secondary beam produced in 7Li(6Li, 7Be), E=30 MeV primary reaction]; measured reaction products, ΔE-E total spectrum for p, d, t, α, 6Li, 7Li, 7Be and 9Be charged particles, differential σ(θ) using silicon surface barrier telescopes at the University of Sao Paulo RIBRAS facility. 7,8,9Be; deduced levels, J, π, B(M1), B(E2), electric and magnetic multipole moments; calculated spectroscopic amplitudes for two-particle wave function components using shell model. 9Be(p, t), (p, p), E=14-23 MeV; calculated elastic scattering differential σ(θ, E), and elastic transfer σ(E). Analysis using coupled reaction channel (CRC) and DWBA calculations.
doi: 10.1103/PhysRevC.99.064617
2019ZE01 Phys.Rev. C 99, 064613 (2019) E.O.N.Zevallos, V.Guimaraes, E.N.Cardozo, J.Lubian, R.Linares, R.Lichtenthaler Filho, K.C.C.Pires, O.C.B.Santos, S.Appannababu, E.Crema, J.Alcantara-Nunez, A.L.Lara, Y.S.Villamizar, U.Umbelino, N.Added, M.Assuncao, V.Morcelle, D.S.Monteiro Elastic scattering of the 12B + 58Ni system at near-barrier energies NUCLEAR REACTIONS 58Ni(12B, 12B), E=30.0, 33.0 MeV; measured reaction products, ΔE-E plot and energy spectra for 4He, 7Li, 9Be and 12B, elastic scattering angular distributions, and σ(θ, E) using silicon ΔE-E telescopes at the University of Sao Paulo RIBRAS facility. Comparison with large-scale coupled reaction channel calculations including E2 and E3 inelastic transitions in the target, and one-nucleon transfer reactions.
doi: 10.1103/PhysRevC.99.064613
2018AN03 J.Phys.(London) G45, 015105 (2018) E.Andrade, Jr., G.S.Karapetyan, A.Deppman, J.L.Bernal-Castillo, V.Guimaraes, A.R.Balabekyan, J.Adam, F.Garcia, F.Guzman Systematic study of fission modes in the proton-induced fission of actinide and pre-actinide NUCLEAR REACTIONS 241Am, 237Np, 238U(p, X), E=26.5, 62.9, 660 MeV; 232Th(p, X), E=6.5, 62.9, 190 MeV; 208Pb(p, X), E=190, 500, 1000 MeV; 197Au(p, X), E=190, 800 MeV; analyzed available data in the framework of the Random Neck Rupture Model; deduced the roles of the neutron excess and of the so called fissility parameter.
doi: 10.1088/1361-6471/aa9a0c
2018GU23 Eur.Phys.J. A 54, 223 (2018) V.Guimaraes, J.Lubian, J.J.Kolata, E.F.Aguilera, M.Assuncao, V.Morcelle Phenomenological critical interaction distance from elastic scattering measurements on a 208Pb target NUCLEAR REACTIONS 208Pb(9Li, 9Li), (10Be, 10Be), (12C, 12C), (16O, 16O), (19F, 19F), (6Li, 6Li), (7Li, 7Li), (8Li, 8Li), (8He, 8He), (9Be, 9Be), (6He, 6He), (11Li, 11Li), E≈Coulomb barrier; measured reaction products; deduced interaction distance, critical interaction, strong-absorption distances, deduced σ relative to the Rutherford value vs reduced distance of closest approach for 12C and 16O projectiles at energies 58.9 to 84.0 MeV; compared with published data; deduced critical interaction distance, binding energy, other parameters for several target-projectile combinations; compared with other published analyses.
doi: 10.1140/epja/i2018-12662-7
2018LE19 Phys.Rev. C 98, 064601 (2018) E.Leistenschneider, A.Lepine-Szily, M.A.G.Alvarez, D.R.Mendes, R.Lichtenthaler, V.A.P.Aguiar, M.Assuncao, R.P.Condori, U.U.da Silva, P.N.de Faria, N.Deshmukh, J.G.Duarte, L.R.Gasques, V.Guimaraes, E.L.A.Macchione, M.C.Morais, V.Morcelle, K.C.C.Pires, V.B.Scarduelli, G.Scotton, J.M.B.Shorto, V.A.B.Zagatto Spectroscopy of high-lying resonances in 9Be by the measurement of (p, p), (p, d), and (p, α) reactions with a radioactive 8Li beam NUCLEAR REACTIONS 1H(8Li, p)8Li, (8Li, d)7Li, (8Li, α)5He, C, 197Au(8Li, 8Li), E=22.5, 16 MeV, [secondary 8Li beam produced in 9Be(7Li, 8Li), E=24.4 MeV]; measured reaction products, yields, Ep, Ip, Ed, Id, Eα, Iα, differential σ(θ) using ΔE-E silicon telescope at the RIBRAS facility of the University of Sao Paulo 8-UD tandem accelerator. 9Be; deduced levels, resonances, J, π, l-values, Γp, Γd, Γα, and reduced widths γ2 and the dimensionless reduced widths θ2α for the α and deuteron channels using R-matrix analysis. Comparison with previous experimental data.
doi: 10.1103/PhysRevC.98.064601
2018YA19 Phys.Rev. C 98, 044608 (2018) Y.Y.Yang, X.Liu, D.Y.Pang, D.Patel, R.F.Chen, J.S.Wang, P.Ma, J.B.Ma, S.L.Jin, Z.Bai, V.Guimaraes, Q.Wang, W.H.Ma, F.F.Duan, Z.H.Gao, Y.C.Yu, Z.Y.Sun, Z.G.Hu, S.W.Xu, S.T.Wang, D.Yan, Y.Zhou, Y.H.Zhang, X.H.Zhou, H.S.Xu, G.Q.Xiao, W.L.Zhan Elastic scattering of the proton drip line nuclei 7Be, 8B, and 9C on a lead target at energies around three times the Coulomb barriers NUCLEAR REACTIONS Pb(7Be, 7Be), E=130 MeV; Pb(8B, 8B), E=178 MeV; Pb(9C, 9C), E=227 MeV; measured scattered particles, elastic scattering σ(θ) using silicon ΔE-E telescopes at RIBLL-HIRFL-Lanzhou accelerator facility. Comparison with continuum discretized coupled channels (CDCC) and optical model calculations.
doi: 10.1103/PhysRevC.98.044608
2017AG09 Phys.Rev. C 96, 024616 (2017) E.F.Aguilera, E.Martinez-Quiroz, P.Amador-Valenzuela, D.Lizcano, A.Garcia-Flores, J.J.Kolata, A.Roberts, G.V.Rogachev, G.F.Peaslee, V.Guimaraes, F.D.Becchetti, A.Villano, M.Ojaruega, Y.Chen, H.Jiang, M.Febbraro, P.A.DeYoung, T.L.Belyaeva Sub-barrier fusion of weakly bound 6Li with 58Ni NUCLEAR REACTIONS 58Ni(6Li, X), E=10.8, 11.5, 12.7, 13.2, 13.7, 14.4 MeV, [secondary pure 6Li beam from 3He(6Li, 6Li), E=31-38 MeV reaction]; measured σ(θ, E) for evaporated protons at the University of Notre Dame FN tandem accelerator facility; deduced proton multiplicities, fusion σ(E) and total reaction σ(E). Proton angular distributions compared with statistical model calculations using PACE2 code. Comparison of fusion σ(E) data with previous experimental data for this reaction and for the 6Li+59Co, 6Li+64Zn, and 6Li+64Ni systems. Comparison with theoretical calculations using one-dimensional barrier penetration model (BPM) and coupled-channel (CC) method using optical model potentials.
doi: 10.1103/PhysRevC.96.024616
2017MO04 Phys.Rev. C 95, 014615 (2017) V.Morcelle, R.Lichtenthaler, A.Lepine-Szily, V.Guimaraes, K.C.C.Pires, J.Lubian, D.R.Mendes, Jr, P.N.de Faria, J.J.Kolata, F.D.Becchetti, H.Jiang, E.F.Aguilera, D.Lizcano, E.Martinez-Quiroz, H.Garcia 8B + 27Al scattering at low energies NUCLEAR REACTIONS 27Al(8B, 8B), (8B, X), E=15.3, 21.7 MeV, [8B secondary beam from 3He(6Li, X), E=26.5, 32.5 MeV primary reaction]; measured scattered particle spectra, σ(θ, E) at Radioactive Ion Beams in Brasil facility (RIBRAS), and at TwinSol facility at the University of Notre Dame; deduced total reaction cross sections and compared with reduced cross sections for 7,9Be, 6,7Li, 6He and 16O projectiles on 27Al target, effect of breakup plus transfer channels on the total reaction cross sections. Optical model analysis using standard double-folding Sao Paulo potential and Woods-Saxon shape, and continuum discretized coupled channels (CDCC) calculations.
doi: 10.1103/PhysRevC.95.014615
2017SC24 Phys.Rev. C 96, 054610 (2017) V.Scarduelli, E.Crema, V.Guimaraes, D.Abriola, A.Arazi, E.de Barbara, O.A.Capurro, M.A.Cardona, J.Gallardo, D.Hojman, G.V.Marti, A.J.Pacheco, D.Rodrigues, Y.Y.Yang, N.N.Deshmukh, B.Paes, J.Lubian, D.R.Mendes, Jr, V.Morcelle, D.S.Monteiro Elastic and inelastic scattering for the 10B + 58Ni system at near-barrier energies NUCLEAR REACTIONS 58Ni(10B, 10B), (10B, 10B'), E=19.0, 21.0, 23.0, 24.0, 25.0, 35.0 MeV; measured particle spectra, σ(θ, E) at the 20 UD tandem accelerator facility of TANDAR laboratory in Buenos Aires; analyzed data by large-scale coupled reaction channel calculation, considering several inelastic transitions of the projectile and the target together with one- and two-step transfer reactions.
doi: 10.1103/PhysRevC.96.054610
2016AG04 Phys.Rev. C 93, 034613 (2016) E.F.Aguilera, P.Amador-Valenzuela, E.Martinez-Quiroz, J.Fernandez-Arnaiz, J.J.Kolata, V.Guimaraes Above-barrier fusion enhancement of proton-halo systems NUCLEAR REACTIONS 58Ni(8B, X), E(cm)=18.9-25.6 MeV; 28Si(8B, X), E(cm)=15.6-27.2 MeV; analyzed and reviewed previous experimental data for fusion σ(E), inclusive and evaporation σ(E), proton yields, α-particle σ(E), α-particle multiplicities, reduced fusion σ(E), proton σ(θ) data for E(8B(cm))=23.7 MeV and 58Ni target using PACE2, LILITA, and CASCADE codes. Complete and incomplete fusion processes. Investigated possible model dependencies. Discussed behavior of neutron-halo systems.
doi: 10.1103/PhysRevC.93.034613
2016BA25 Phys.Rev. C 93, 054614 (2016) A.R.Balabekyan, G.S.Karapetyan, N.A.Demekhina, D.R.Drnoyan, V.I.Zhemenik, J.Adam, L.Zavorka, A.A.Solnyshkin, V.M.Tsoupko-Sitnikov, V.Guimaraes, A.Deppman Isomer production in intermediate-energy deuteron-induced reactions on a gold target NUCLEAR REACTIONS 197Au(d, X)44Sc/44mSc/95Nb/95mNb/95Tc/95mTc/102Rh/102mRh/184Re/184mRe/193Hg/193mHg/196Au/196mAu/197Hg/197mHg, E=4.4 GeV; measured Eγ, Iγ, production cross sections of ground and metastable states, isomer ratios by using activation method at JINR-Dubna; deduced isomer ratios versus mass number of the reaction products and fractional momentum transfer of residual nuclei, average intrinsic angular momentum of the composite system using a statistical model based on the formalism developed by Huizenga and Vandenbosch.
doi: 10.1103/PhysRevC.93.054614
2016GU09 Phys.Rev. C 93, 064607 (2016) V.Guimaraes, J.J.Kolata, E.F.Aguilera, A.Howard, A.Roberts, F.D.Becchetti, R.O.Torres-Isea, A.Riggins, M.Febrarro, V.Scarduelli, P.N.de Faria, D.S.Monteiro, J.F.P.Huiza, A.Arazi, J.Hinnefeld, A.M.Moro, E.S.Rossi, V.Morcelle, A.Barioni, AlanJ.Mitchell Backscattering measurement of 6He on 209Bi: Critical interaction distance NUCLEAR REACTIONS 209Bi(6He, 6He), E=12, 14, 16 MeV, [secondary 6He beam from 2H(7Li, 6He), E=32 MeV]; measured 6He spectra using silicon ΔE-E telescope, σ(θ, E) at the TwinSol facility of Notre Dame Nuclear Structure Laboratory; deduced ratio of elastic to Rutherford cross sections. Comparison with a three-body CDCC calculation, and with experimental data for 209Bi(α, α), (6Li, 6Li), (9Be, 9Be), (12C, 12C), (16O, 16O), and 208Pb(6He, 6He) reactions.
doi: 10.1103/PhysRevC.93.064607
2016KA36 Phys.Rev. C 94, 024618 (2016) G.S.Karapetyan, A.Deppman, V.Guimaraes, A.Balabekyan, N.A.Demekhina Interaction of 11B with 209Bi and 181Ta targets at intermediate energies NUCLEAR REACTIONS 181Ta(11B, X)7Be/22Na/24Na/28Mg/34mCl/38S/39Cl/42K/43K/43Sc/44K/46Sc/47Sc/48Sc/51Cr/54Mn/56Co/57Ni/59Fe/62Zn/65Zn/67Ga/69Ge/72Zn/73Se/76As/77Br/78As/82Br/83Rb/83Sr/84Rb/86Rb/87Y/87mY/89mZr/90mY/91Sr/91mY/92Sr/92Y/93Y/95Zr/95Nb/95mNb/96Nb/97Zr/97Nb/99Mo/99mTc/102mRh/103Ru/105Ru/105Rh/110mAg/111mPd/111Ag/112Pd/112Ag/113Ag/115mCd/117Cd/117mCd/117In/117mIn/120mSb/122Sb/124Sb/126Sb/127Sb/130I/131Ba/139Ce/145Eu/146Eu/146Gd/147Gd/148Eu/153Gd/153Tb/153Dy/155Dy/156Tb/161Er/165Tm/166Tm/167Tm/168Tm/169Yb/169Lu/170Lu/170Hf/171Er/171Lu/172Er/172Tm/172Lu/172Hf/173Tm/173Hf/173Ta/174Ta/175Yb/175Hf/175Ta/176Ta/177Lu/177mLu/177mHf/177Ta/179mHf/179Lu/180Ta/181Hf/181Re/182Ta/182Re/182mRe/182Os/183Re/183Os/183mOs/184Re/184mRe/185Os/185Ir/186Ir/186Pt/187W/187Ir/187Pt/188W/188Ir/188Pt/189Ir/189Pt/190Ir/191Pt, E=125.7, 245.4 MeV; 209Bi(11B, X)7Be/22Na/24Na/28Mg/34mCl/38S/38Cl/39Cl/41Ar/42K/46Sc/46mSc/54Mn/57Co/59Fe/62Zn/65Zn/67Ga/69Ge/72Zn/73Se/76As/77Ge/77Br/82Br/83Rb/83Sr/84Rb/86Rb/87Y/87mY/89Zr/90mY/91Sr/91mY/92Sr/92Y/93Y/95Zr/95Nb/95mNb/96Nb/97Zr/97Nb/99Mo/99mTc/102mRh/103Ru/105Ru/105Rh/110mAg/111mPd/111Ag/112Pd/112Ag/113Ag/115mCd/117Cd/117mCd/117In/117mIn/120mSb/122Sb/124Sb/126Sb/126I/127Sb/130I/131Ba/133I/135I/136Cs/140Ba/140La/141La/143Ce/146Gd/147Nd/150Pm/167Tm/169Lu/170Hf/171Lu/173Hf/175Hf/175Ta/177Ta/181Re/182Os/183Os/183Re/186Ir/188Pt/189Pt/191Pt/192Au/193Au/194Au/195Au/195Hg/195mHg/196Au/196mAu/197Hg/197mHg/198Au/198mAu/198Tl/199Tl/200Pb/201Tl/201Pb/202Tl/203Pb/203Bi/204Bi/204Po/205Bi/206Bi/206Po/207Po/209At/210At/210Rn/211Rn, E=146.0 MeV; measured production σ using γ-activation method and offline γ-spectroscopy at U-400M accelerator and ACCULINA setup of JINR, Dubna; deduced mass-yield distribution, fission and total reaction cross sections; possible coexistence of complete fusion (CF) and incomplete fusion (ICF) processes, relative values of the linear momentum imparted to the targets. Comparison to data for proton-induced reactions.
doi: 10.1103/PhysRevC.94.024618
2016KO23 Eur.Phys.J. A 52, 123 (2016) J.J.Kolata, V.Guimaraes, E.F.Aguilera Elastic scattering, fusion, and breakup of light exotic nuclei
doi: 10.1140/epja/i2016-16123-1
2016SZ03 Phys.Rev. C 94, 054314 (2016) S.V.Szwec, B.P.Kay, T.E.Cocolios, J.P.Entwisle, S.J.Freeman, L.P.Gaffney, V.Guimaraes, F.Hammache, P.P.McKee, E.Parr, C.Portail, J.P.Schiffer, N.de Sereville, D.K.Sharp, J.F.Smith, I.Stefan Rearrangement of valence neutrons in the neutrinoless double-β decay of 136Xe NUCLEAR REACTIONS 134Ba(d, p), E=15 MeV; 134Ba(α, 3He), E=40.1 MeV; 136Ba(p, d), E=23 MeV; 134Ba(3He, α), E=32.0 MeV; measured outgoing proton, deuteron, 3He and α spectra, σ(θ) using an Enge split-pole spectrometer at the ALTO Tandem accelerator at IPN-Orsay. DWBA analysis using PTOLEMY code. 135Ba; deduced levels, J, π. 136Xe, 134,136Ba; deduced ground-state neutron occupancies. Comparisons with theoretical calculations using various nuclear-structure models. Relevance to initial and final state in the 0νββ decay mode of 136Xe.
doi: 10.1103/PhysRevC.94.054314
2015DE06 Phys.Rev. C 91, 024620 (2015) A.Deppman, G.S.Karapetyan, V.Guimaraes, C.Gonzales, A.R.Balabekyan, N.A.Demekhina Bremsstrahlung-induced fission and spallation of the pre-actinide nucleus 181Ta NUCLEAR REACTIONS 181Ta(γ, F)59Fe/64Cu/65Zn/69mZn/71mZn/72Zn/72Ga/73Ga/74As/75Se/76As/77Ge/77Br/78Ge/78As/82Br/84Br/84Rb/84mRb/85mSr/86Rb/87Kr/87Y/88Kr/88Y/88Zr/90mY/91Sr/91mY/92Sr/92Y/93Y/95Zr/95mNb/96Nb/96Tc/97Zr/99Mo/100Pd/102Rh/103Ru/105Ru/105Rh, E=50, 3500 MeV bremsstrahlung; measured Eγ, Iγ from the decay of fission fragments at Yerevan electron synchrotron facility; deduced mass- and charge-yield distributions of fission fragments. Comparison with Monte Carlo model calculations using CRISP computer code for fission and spallation reactions.
doi: 10.1103/PhysRevC.91.024620
2015DE36 Phys.Rev. C 92, 054615 (2015) N.N.Deshmukh, V.Guimaraes, E.Crema, D.Abriola, A.Arazi, E.de Barbara, O.A.Capurro, M.A.Cardona, J.Gallardo, D.Hojman, G.V.Marti, A.J.Pacheco, D.Rodrigues, Y.Y.Yang, A.N.Deshmukh, D.R.Mendes, V.Morcelle, V.Scarduelli, D.S.Monteiro Elastic and inelastic scattering for the 11B + 58Ni system: Target and projectile reorientation effects NUCLEAR REACTIONS 58Ni(11B, 11B), (11B, 11B'), E=19.0, 20.0, 21.0, 23.0, 24.0, 25.0, 35.0 MeV; measured scattered particle spectra, σ(θ, E) at Tandar laboratory in Buenos Aires. 58Ni; measured σ(θ) for the first three excited states. Enriched target. Comparison with coupled-channel calculations. Discussed influence of 11B ground-state-spin reorientation and 58Ni first excited 2+ state on the reaction mechanism.
doi: 10.1103/PhysRevC.92.054615
2014BA19 Phys.Rev. C 89, 054604 (2014) A.R.Balabekyan, N.A.Demekhina, G.S.Karapetyan, L.Karayan, J.R.Drnoyan, V.I.Zhemenik, J.Adam, L.Zavorka, A.A.Solnyshkin, V.M.Tsoupko-Sitnikov, J.Khushvaktov, V.Guimaraes, A.Deppman Recoil properties of fragments formed in 4.4 GeV deuteron-induced reactions on a gold target NUCLEAR REACTIONS 197Au(d, X), E=4.4 GeV; measured Eγ, Iγ, forward to backward (F/B) ratio of fragments, forward to backward anisotropy, mean momentum and recoil parameter for A=20-198 fragments of 24Na, 28Mg, 42,43K, 44m,46,48Sc, 47Ca, 48V, 51Cr, 52,54Mn, 55,56,58Co, 59Fe, 65,72Zn, 71,72,74As, 73,75Se, 76,77,82Br, 83,84,86Rb, 85Sr, 86,87,88Y, 89,95Zr, 90,95Nb, 93,99Mo, 93,96Tc, 97,103Ru, 104,105,111,115Ag, 110,111In, 112Pd, 113,117mSn, 115mCd, 120mSb, 131Ba, 132Te, 132Ce, 133,134,135I, 135,139Ce, 143Pm, 145,146,147,148,149Eu, 146,147,149Gd, 151Tb, 155,157Dy, 167Tm, 171Lu, 173,175Hf, 182Os, 183Re, 186,188,190Ir, 188,191Pt, 194,196,198Au, 197mHg. Activation method with thick target thick catcher technique at LHE-JINR facility. Comparison with previous experimental data for 197Au(p, X), E=1-11.5 GeV.
doi: 10.1103/PhysRevC.89.054604
2014BA57 Phys.Rev. C 90, 054612 (2014) A.R.Balabekyan, N.A.Demekhina, G.S.Karapetyan, D.R.Drnoyan, V.I.Zhemenik, J.Adam, L.Zavorka, A.A.Solnyshkin, V.M.Tsoupko-Sitnikov, J.Khushvaktov, L.Karayan, V.Guimaraes, A.Deppman, F.Garcia Target residues formed in the 4.4 GeV deuteron-induced reaction on gold NUCLEAR REACTIONS 197Au(d, X)24Na/28Mg/42K/43K/47K/44Sc/44mSc/46Sc/48Sc/48V/52Mn/, 54Mn/59Fe/55Co/56Co/58Co/60Co/65Zn/72Zn/71As/72As/74As/75Se/77Br/82Br/81Rb/83Rb/84Rb/83Sr/85Sr/86Y/87Y/88Y/88Zr/89Zr/95Zr/90Nb/92mNb/95Nb/95mNb/93Tc/94Tc/96Tc/103Ru/99Rh/100Rh/102Rh/102mRh/100Pd/105Ag/106mAg/110mAg/111In/113Sn/117mSn/124Sb/126Sb/119Te/132Te/124I/126I/133I/127Xe/131Ba/140Ba/139Ce/143Ce/143Pm/144Pm/148mPm/145Eu/146Eu/147Eu/148Eu/149Eu/146Gd/147Gd/149Gd/153Gd/147Tb/149Tb/153Tb/160Tb/167Tm/168Tm/171Lu/172Lu/173Lu/177mLu/175Hf/181Hf/182Ta/182Re/184Re/184mRe/185Os/185Ir/190Ir/192Ir/194mIr/188Pt/191Pt/194Au/195Au/196Au/198Au/198mAu, E=4.4 GeV; measured Eγ, Iγ, σ for reaction products, charge and mass-yield distributions for the isobaric chains at JINR facility. Coexistence of evaporation, fission, and multifragmentation channels.
doi: 10.1103/PhysRevC.90.054612
2014CH06 J.Phys.(London) G41, 035101 (2014) L.C.Chamon, L.R.Gasques, L.F.M.Alves, V.Guimaraes, P.Descouvemont, R.J.de Boer, M.Wiescher Effect of the inelastic couplings on the scattering of alpha particles by 12C at low energies NUCLEAR REACTIONS 12C(α, α), (α, X)16O, E=7.85-10.42 MeV; analyzed available data, σ and S-factors; deduced the effect of the coupling of the first 2+ state in 12C.
doi: 10.1088/0954-3899/41/3/035101
2014LE26 Eur.Phys.J. A 50, 128 (2014) A.Lepine-Szily, R.Lichtenthaler, V.Guimaraes The Radioactive Ion Beams in Brazil (RIBRAS) facility - Description, program, main results, future plans
doi: 10.1140/epja/i2014-14128-4
2014MA49 Phys.Rev. C 90, 014616 (2014) E.Martinez-Quiroz, E.F.Aguilera, D.Lizcano, P.Amador-Valenzuela, H.Garcia-Martinez, J.J.Kolata, A.Roberts, L.O.Lamm, G.Rogachev, V.Guimaraes, F.D.Becchetti, A.Villano, M.Ojaruega, M.Febbraro, Y.Chen, H.Jiang, P.A.DeYoung, G.F.Peaslee Near- and sub-barrier fusion of the 7Be + 58Ni system NUCLEAR REACTIONS 58Ni(7Be, X), E=16.4, 17.5, 19.4, 20.1, 20.9, 21.9 MeV; measured evaporated proton spectra, σ(E) for protons at Notre Dame TwinSol Radioactive Nuclear Beam facility and FM tandem accelerator; deduced total fusion σ(E) using proton multiplicities. Comparison with predictions of Wong's one-dimensional barrier-penetration model (BPM), and optical model potential (OMP). Comparison with previous experimental results for fusion σ(E) in 27Al(7Be, X), and fission σ(E) in 238U(7Be, F).
doi: 10.1103/PhysRevC.90.014616
2014MO06 Phys.Lett. B 732, 228 (2014) V.Morcelle, K.C.C.Pires, M.Rodriguez-Gallardo, R.Lichtenthaler, A.Lepine-Szily, V.Guimaraes, P.N.de Faria, D.R.Mendes, Jr, A.M.Moro, L.R.Gasques, E.Leistenschneider, R.P.Condori, V.Scarduelli, M.C.Morais, A.Barioni, J.C.Zamora, J.M.B.Shorto Four-body effects in the 6He + 58Ni scattering NUCLEAR REACTIONS 58Ni(6He, 6He), E=12.2, 16.5, 21.7 MeV; measured reaction products; deduced σ, four-body effects. Comparison with continuum-discretized coupled-channels calculation.
doi: 10.1016/j.physletb.2014.03.043
2014MO07 Phys.Rev. C 89, 044611 (2014) V.Morcelle, R.Lichtenthaler, R.Linares, M.C.Morais, V.Guimaraes, A.Lepine-Szily, P.R.S.Gomes, J.Lubian, D.R.Mendes, Jr., P.N.De Faria, A.Barioni, L.R.Gasques, J.M.B.Shorto, K.C.C.Pires, J.C.Zamora, R.P.Condori, V.Scarduelli, J.J.Kolata, H.Amro, F.D.Becchetti, H.Jiang, E.F.Aguilera, D.Lizcano, E.Martinez-Quiroz, H.Garcia Elastic scattering and total reaction cross section for the 7Be + 27Al system at near-barrier energies NUCLEAR REACTIONS 27Al(7Be, 7Be), [secondary 7Be produced in 3He(6Li, 7Be) primary reaction], E=10.0, 13.8, 15.2, 15.4 MeV; measured particle spectra, elastic σ(E, θ) using RIBRAS system at Sao Paulo, and TwinSol at NSL-Notre Dame facilities; deduced mean radii of sensitivity, energy dependence of the interacting optical potential, total reaction σ(E). Optical model analysis using the double-folding Sao Paulo and phenomenological Woods-Saxon and Sao Paulo potentials. Analysis of data obtained for 27Al, 197Au(8B, 8B) reactions in progress.
doi: 10.1103/PhysRevC.89.044611
2013DE14 Phys.Rev. C 87, 054604 (2013) A.Deppman, E.Andrade, II, V.Guimaraes, G.S.Karapetyan, N.A.Demekhina Photofission of 232Th and 238U at intermediate energies NUCLEAR REACTIONS 232Th, 238U(γ, F), E=50, 3500 MeV; measured Eγ, Iγ; deduced yield, charge and mass distributions of fragments, fissility parameter. Data for fission fragment distributions analyzed by Monte Carlo calculations using CRISP code.
doi: 10.1103/PhysRevC.87.054604
2013DE25 Phys.Rev. C 88, 024608 (2013) A.Deppman, E.Andrade, II, V.Guimaraes, G.S.Karapetyan, A.R.Balabekyan, N.A.Demekhina Proton-induced fission on 241Am, 238U, and 237Np at intermediate energies NUCLEAR REACTIONS 237Np, 238U, 241Am(p, F), E=660 MeV; calculated fission σ vs fragment mass, fissility, number of nucleons evaporated by the nuclei before and after fission. Intermediate energy proton-induced fission. Monte-Carlo method using computer code CRISP and Bohr-Wheeler model. Comparison with experimental data.
doi: 10.1103/PhysRevC.88.024608
2013DE32 Eur.Phys.J.Plus 127, 28 (2013) N.A.Demekhina, G.S.Karapetyan, V.Guimaraes Investigation of induced fission of natPb by accelerated 7Li ions NUCLEAR REACTIONS Pb(7Li, X)61Cu/62Zn/65Ni/65Zn/65Ga/66Ni/66Ga/67Cu/67Ga/69Ge/71Zn/72Zn/72Ga/73Ga/74As/75Se/75Br/76As/77Ge/77Br/78Ge/78As/81Se/82Br/83Rb/84Rb/85Sr/85Y/86Rb/87Y/88Y/89Rb/89Zr/90Y/91Sr/91Y/92Sr/92Y/93Y/94Y/95Zr/95Nb/95Tc/96Tc/97Zr/97Nb/97Ru/98Nb/99Mo/99Tc/101Rh/102Rh/103Ru/105Rh/106Ru/106Rh/110Ag/111Ag/111Cd/112Pd/112Ag/113Ag/113Sn/115Cd/117Cd/117Sn/118Sb/120Sb/121Te/121I/122Sb/123Te/123I/123Xe/124Sb/124I/125Sb/126I/127Sb/127Xe/128Sb/129Sb/129Te/129Ba/130I/131Te/132Te/132Cs/133I/133Ba/139Ba/139Ce/140Ba/140La/141La/147Gd, E=245 MeV; measured fission products, Eγ, Iγ; deduced σ. Comparison with available data, thick target technique.
doi: 10.1140/epjp/i2013-13028-x
2013DE37 Phys.Rev. C 88, 064609 (2013) A.Deppman, E.Andrade, II, V.Guimaraes, G.S.Karapetyan, O.A.P.Tavares, A.R.Balabekyan, N.A.Demekhina, J.Adam, F.Garcia, K.Katovsky Superasymmetric fission of heavy nuclei induced by intermediate-energy protons NUCLEAR REACTIONS 237Np, 238U(p, F)28Mg/34mCl/38S/38Cl/39Cl/41Ar/42K/43K/43Sc/44Ar/44K/44Sc/44mSc/45K/46Sc/46mSc/47Ca/47Sc/48Sc/48V/48Cr/49Cr/51Cr/52Mn/52mMn/52Fe/54Mn/55Co/56Mn/56Co/56Ni/57Co/57Ni/58Co/58mCo/59Fe/60Co/60mCo/60Cu/61Cu/65Ni/65Zn/65Ga/66Ni/66Ga/66Ge/67Cu/67Ga/69mZn/69Ge, E=660 MeV; measured Eγ, Iγ, production σ of intermediate-mass fragments (IMF) by induced activation method at LNR Phasotron-JINR cyclotron facility. A total of 93 isotopes in A=30-200 range identified with high precision. Comparison with simulation code CRISP for multimodal fission. Discussed superasymmetric fragment production mechanism.
doi: 10.1103/PhysRevC.88.064609
2012ME11 Phys.Rev. C 86, 064321 (2012), Erratum Phys.Rev. C 98, 069901 (2018) D.R.Mendes, A.Lepine-Szily, P.Descouvemont, R.Lichtenthaler, V.Guimaraes, P.N.de Faria, A.Barioni, K.C.C.Pires, V.Morcelle, R.P.Condori, M.C.Morais, E.Leistenschneider, C.E.F.Lima, J.C.Zamora, J.A.Alcantara, V.Zagatto, M.Assuncao, J.M.B.Shorto The 8Li(p, α)5He reaction at low energies, and 9Be spectroscopy around the proton threshold NUCLEAR REACTIONS 1H(8Li, α), [secondary 8Li beam from 9Be (7Li, 8Li), E=16-22 MeV primary reaction], E=13.2, 14.5, 17.0, 19.0 MeV; measured particle spectra, differential σ(E). 9Be; deduced proton resonances, levels, J, π, isospin, widths. Three-body and sequential decays. R-matrix analysis. Comparison with previous experimental results. 8Li(p, α)5He; deduced integrated σ, astrophysical S factor and reaction rates.
doi: 10.1103/PhysRevC.86.064321
2012PA20 Nucl.Phys. A890-891, 1 (2012) B.Paes, J.Lubian, P.R.S.Gomes, V.Guimaraes Role of Coulomb and nuclear breakups in the interaction of 8B with 12C NUCLEAR REACTIONS 12C(8B, 8B), (8B, p7Be), E(cm)=3.60, 5.52, 9.00, 22.38 MeV;12C(6He, 6He), E(cm)=18 MeV; calculated halo nuclei elastic σ(θ), breakup σ(θ). 58Ni(8B, p7Be), E≈Coulomb barrier; calculated breakup σ(θ). CDCC and no-coupling calculations; compared with available data.
doi: 10.1016/j.nuclphysa.2012.07.011
2011AG15 Phys.Rev.Lett. 107, 092701 (2011) E.F.Aguilera, P.Amador-Valenzuela, E.Martinez-Quiroz, D.Lizcano, P.Rosales, H.Garcia-Martinez, A.Gomez-Camacho, J.J.Kolata, A.Roberts, L.O.Lamm, G.Rogachev, V.Guimaraes, F.D.Becchetti, A.Villano, M.Ojaruega, M.Febbraro, Y.Chen, H.Jiang, P.A.DeYoung, G.F.Peaslee, C.Guess, U.Khadka, J.Brown, J.D.Hinnefeld, L.Acosta, E.S.Rossi, Jr., J.F.P.Huiza, T.L.Belyaeva Near-Barrier Fusion of the 8B+58Ni Proton-Halo System NUCLEAR REACTIONS 58Ni(8B, X)66As, E=22.4-26.9 MeV; measured reaction products, proton spectra; deduced fusion σ, fusion and breakup yields.
doi: 10.1103/PhysRevLett.107.092701
2011BA25 Phys.Rev. C 84, 014603 (2011) A.Barioni, J.C.Zamora, V.Guimaraes, B.Paes, J.Lubian, E.F.Aguilera, J.J.Kolata, A.L.Roberts, F.D.Becchetti, A.Villano, M.Ojaruega, H.Jiang Elastic scattering and total reaction cross sections for the 8B, 7Be, and 6Li +12C systems NUCLEAR REACTIONS 12C(8B, 8B), E=25.8 MeV; 12C(7Be, 7Be), E=18.8 MeV; 12C(6Li, 6Li), E=12.3 MeV; measured particle spectra, tof, σ(θ). Optical model analysis of σ(θ) data using Woods-Saxon and double-folding type potentials. 12C(8B, 8B); deduced effect of breakup by coupled-channels calculations using continuum discretized coupled-channel method and cluster-model folding potentials. Experimental data for 12C(α, α), (6He, 6He), (7Li, 7Li), (9Be, 9Be), (11B, 11B), (16O, 16O), E(cm)=2.8-22.8 MeV used to extract reduced reaction σ.
doi: 10.1103/PhysRevC.84.014603
2011GU29 J.Phys.:Conf.Ser. 312, 082024 (2011) V.Guimaraes, A.Lepine-Szily, R.Lichtenthaler, P.N.de Faria, A.Barioni, K.C.C.Pires, V.Morcelle, D.R.Mendes, J.C.Zamora, M.C.Morais, R.P.Condori, E.A.Benjamim, D.S.Monteiro, E.Crema, A.M.Moro, J.Lubian Low energy nuclear reactions with RIBRAS, Radioactive Ion Beam in Brazil, system COMPILATION 27Al(6He, X), 59Co(6Li, X), (7Li, X), 58Ni(6Li, X), (7Be, X), (8B, X), 64Zn(6He, X), (6Li, X), (7Li, X), (9Be, X), (16O, X), 209Bi(6He, X), E not given; compiled scaled reaction σ vs scaled energy.
doi: 10.1088/1742-6596/312/4/082024
2011PI08 Phys.Rev. C 83, 064603 (2011) K.C.C.Pires, R.Lichtenthaler, A.Lepine-Szily, V.Guimaraes, P.N.de Faria, A.Barioni, D.R.Mendes, Jr., V.Morcelle, R.P.Condori, M.C.Morais, J.C.Zamora, E.Crema, A.M.Moro, M.Rodriguez-Gallardo, M.Assuncao, J.M.B.Shorto, S.Mukherjee Experimental study of 6He+9Be elastic scattering at low energies NUCLEAR REACTIONS 9Be, 197Au(6He, 6He), E=16.2, 21.3 MeV, [6He secondary beam from 9Be(7Li, 6He), E=22.18, 26.10 MeV primary beam]; measured 6He spectra, cross sections, σ(θ), biparametric spectrum. Effect of the collective couplings to the excited states. Coupled channels calculations, using a double-folding potential, and three- and four-body continuum-discretized coupled-channels (CDCC) calculations.
doi: 10.1103/PhysRevC.83.064603
2011ZA05 Phys.Rev. C 84, 034611 (2011) J.C.Zamora, V.Guimaraes, A.Barioni, A.Lepine-Szily, R.Lichtenthaler, P.N.de Faria, D.R.Mendes Jr, L.R.Gasques, J.M.B.Shorto, V.Scarduelli, K.C.C.Pires, V.Morcelle, E.Leistenschneider, R.P.Condori, V.A.Zagatto, M.C.Morais, E.Crema 7, 9, 10Be elastic scattering and total reaction cross sections on a 12C target NUCLEAR REACTIONS 12C(7Be, 7Be), E=18.8 MeV; 12C(9Be, 9Be), E=26.0 MeV; 12C(10Be, 10Be), E=23.2 MeV; measured particle spectra, σ(θ); deduced reduced total reaction cross section systematics for several light beams scattered on a carbon target using data from several experiments. Analysis by optical model potentials using Woods-Saxon and double-folding form factors, and continuum discretized coupled-channels (CDCC) method.
doi: 10.1103/PhysRevC.84.034611
2010DE14 Phys.Rev. C 81, 044605 (2010) P.N.de Faria, R.Lichtenthaler, K.C.C.Pires, A.M.Moro, A.Lepine-Szily, V.Guimaraes, D.R.Mendes, Jr., A.Arazi, M.Rodriguez-Gallardo, A.Barioni, V.Morcelle, M.C.Morais, O.Camargo, Jr., J.Alcantara Nunez, M.Assuncao Elastic scattering and total reaction cross section of 6He+120Sn NUCLEAR REACTIONS 120Sn(6He, 6He), E=17.40, 18.05, 19.80, 20.5 MeV; σ(E, θ). Comparison with optical model and continuum discretized coupled channels (CDCC) calculations.
doi: 10.1103/PhysRevC.81.044605
2010DE34 Phys.Rev. C 82, 034602 (2010) P.N.de Faria, R.Lichtenthaler, K.C.C.Pires, A.M.Moro, A.Lepine-Szily, V.Guimaraes, D.R.Mendes, Jr., A.Arazi, A.Barioni, V.Morcelle, M.C.Morais α-particle production in 6He+120Sn collisions NUCLEAR REACTIONS 120Sn(6He, 6He), (6He, X), E=17.4, 18.04, 19.8, 20.5 MeV, [6He beam from 9Be(7Li, 6He), E=2-26 MeV]; measured α and 6He spectra, σ(E, θ). DWBA analysis. Comparison with breakup and neutron transfer calculations using continuum-discretized coupled-channels (CDCC) approach.
doi: 10.1103/PhysRevC.82.034602
2010GU11 Pramana 75, 137 (2010) Low-energy nuclear reactions with double-solenoid-based radioactive nuclear beam
doi: 10.1007/s12043-010-0073-0
2010HU11 At.Data Nucl.Data Tables 96, 824 (2010) J.T.Huang, C.A.Bertulani, V.Guimaraes Radiative capture of nucleons at astrophysical energies with single-particle states NUCLEAR REACTIONS 2H, 6,7Li, 7,9Be, 8B, 11,12,13C, 13,14,15N, 16O, 20Ne(p, γ), E(cm) < 3 MeV; 2H, 7,8Li, 11B, 12,14C, 15N, 16,18O(n, γ), E(cm) < 2 MeV; calculated binding energies, σ, S-factors, spectroscopic factors. Single-particle potential model.
doi: 10.1016/j.adt.2010.06.004
2010LE14 Nucl.Phys. A834, 491c (2010) A.Lepine-Szily, R.Lichtenthaler, V.Guimaraes, D.R.Mendes, Jr, P.N.de Faria, A.Barioni, E.A.Benjamim, K.C.C.Pires, V.Morcelle, R.P.Condori, M.C.Morais, P.Descouvemont, A.M.Moro, M.Rodriguez Gallardo, M.M.Assuncao, J.A.Alcantara Nunez, J.M.B.Shorto, J.C.Zamora, E.Leistenschneider, C.E.F.Lima Scientific program of the Radioactive Ion Beams Facility in Brasil (RIBRAS) NUCLEAR REACTIONS 1H(8Li, α), E=13.2, 14.5, 17.4, 19.0 MeV; measured Eα, Iα(θ=forward); deduced σ(θ=forward), effect of halo nuclei. 9Be(6He, 6He), E=16.2 MeV; measured σ(θ); deduced effect of halo nuclei.
doi: 10.1016/j.nuclphysa.2010.01.074
2010MO26 Phys.Rev. C 82, 044606 (2010) P.Mohr, P.N.de Faria, R.Lichtenthaler, K.C.C.Pires, V.Guimaraes, A.Lepine-Szily, D.R.Mendes, Jr., A.Arazi, A.Barioni, V.Morcelle, M.C.Morais Comparison of 120Sn(6He, 6He)120Sn and 120Sn(α, α)120Sn elastic scattering and signatures of the 6He neutron halo in the optical potential NUCLEAR REACTIONS 120Sn(α, α), E=20.0, 26.1, 27.1, 29.7, 30.8, 34.4, 40.0, 50.5 MeV; 120Sn(6He, 6He), E=17.4, 18.05, 19.8, 20.50 MeV; analyzed σ, excitation functions, reflection coefficients using systematic double-folding Woods-Saxon potentials.
doi: 10.1103/PhysRevC.82.044606
2010MU09 Eur.Phys.J. A 45, 23 (2010) S.Mukherjee, N.N.Deshmukh, V.Guimaraes, J.Lubian, P.R.S.Gomes, A.Barioni, S.Appannababu, C.C.Lopes, E.N.Cardozo, K.C.C.Pires, R.Lichtenthaler, A.Lepine-Szily, D.S.Monteiro, J.M.B.Shorto, P.N.de Faria, E.Crema, V.Morcelle, M.C.Morais, R.P.Condori Total reaction cross-sections for light weakly bound systems NUCLEAR REACTIONS 9Be, 51V(8Li, 8Li), (8Li, X), E=18.5, 19.6 MeV; measured σ, σ(θ); calculated σ(θ) using Sao Paulo potential and WS form factors; deduced optical model parameters. Comparison with other reactions. Secondary radioactive beam.
doi: 10.1140/epja/i2010-10987-9
2010SO10 Nucl.Phys. A836, 1 (2010) D.P.Sousa, D.Pereira, J.Lubian, L.C.Chamon, J.R.B.Oliveira, E.S.Rossi, Jr., C.P.Silva, P.N.de Faria, V.Guimaraes, R.Lichtenthaler, M.A.G.Alvarez Probing the 6, 7Li nucleon densities through a new break-up process approach NUCLEAR REACTIONS 120Sn(6Li, X), E=19.5 MeV; 120Sn(7Li, X), E=19.5, 20.5, 25 MeV; measured elastic and quasi-elastic σ(θ) using silicon barrier detectors; deduced optical model parameters, sensitivity radius, nuclear densities and introduced new imaginery potential component.
doi: 10.1016/j.nuclphysa.2010.01.245
2009AG02 Phys.Rev. C 79, 021601 (2009) E.F.Aguilera, E.Martinez-Quiroz, D.Lizcano, A.Gomez-Camacho, J.J.Kolata, L.O.Lamm, V.Guimaraes, R.Lichtenthaler, O.Camargo, F.D.Becchetti, H.Jiang, P.A.DeYoung, P.J.Mears, T.L.Belyaeva Reaction cross sections for 8B, 7Be, and 6Li+58Ni near the Coulomb barrier: Proton-halo effects NUCLEAR REACTIONS 58Ni(6Li, 6Li), E=9.9, 11.2, 12.1, 13.0, 14.0 MeV; 58Ni(7Be, 7Be), E=15.1, 17.1, 18.5, 19.9, 21.4 MeV; 58Ni(8B, 8B), E=20.7, 23.4, 25.3, 27.2, 29.3 MeV; measured σ, angular distributions; deduced total reaction and breakup cross section for (8B, 8B) reaction, and proton halo effects for 8B. Comparison with optical-model calculations.
doi: 10.1103/PhysRevC.79.021601
2009AG14 Phys.Rev. C 79, 021601(R) (2009) E.F.Aguilera, E.Martinez-Quiroz, D.Lizcano, A.Gomez-Camacho, J.J.Kolata, L.O.Lamm, V.Guimaraes, R.Lichtenthaler, O.Camargo, F.D.Becchetti, H.Jiang, P.A.Deyoung, P.J.Mears, T.L.Belyaeva Reaction cross sections for 8B, 7Be, and 6Li + 58Ni near the Coulomb barrier: Proton-halo effects NUCLEAR REACTIONS 58Ni(8B, 8B), 58Ni(7Be, 7Be), 58Ni(6Li, 6Li), E=9.8-29.2 MeV; measured products, 58Ni; deduced σ(θ). Data were imported from EXFOR entry C1671.
doi: 10.1103/physrevc.79.021601
2009BA42 Phys.Rev. C 80, 034617 (2009) A.Barioni, V.Guimaraes, A.Lepine-Szily, R.Lichtenthaler, D.R.Mendes, Jr., E.Crema, K.C.C.Pires, M.C.Morais, V.Morcelle, P.N.de Faria, R.P.Condori, A.M.Moro, D.S.Monteiro, J.M.B.Shorto, J.Lubian, M.Assuncao Elastic scattering and total reaction cross sections for the 8Li+12C system NUCLEAR REACTIONS 12C(8Li, 8Li), (8Li, 9Be)11B, E=23.9 MeV; measured particle spectra, σ, σ(θ); deduced spectroscopic factors. Optical-model analysis with Woods-Saxon and double-folding Sao Paulo potential. Coupled-channel analysis for breakup and inelastic channels. Comparison of spectroscopic factors with shell-model calculations and previous experimental data.
doi: 10.1103/PhysRevC.80.034617
2009MO03 Phys.Rev. C 79, 014601 (2009) D.S.Monteiro, O.A.Capurro, A.Arazi, J.O.Fernandez Niello, J.M.Figueira, G.V.Marti, D.Martinez Heimann, A.E.Negri, A.J.Pacheco, V.Guimaraes, D.R.Otomar, J.Lubian, P.R.S.Gomes Near- and subbarrier elastic and quasielastic scattering of the weakly bound 6Li projectile on 144Sm NUCLEAR REACTIONS 144Sm(6Li, 6Li), E=14-35 MeV; measured excitation functions. Comparison with coupled-channel calculations.
doi: 10.1103/PhysRevC.79.014601
2009OT01 Phys.Rev. C 80, 034614 (2009) D.R.Otomar, J.Lubian, P.R.S.Gomes, D.S.Monteiro, O.A.Capurro, A.Arazi, J.O.Fernandez Niello, J.M.Figueira, G.V.Marti, D.Martinez Heimann, A.E.Negri, A.J.Pacheco, V.Guimaraes, L.C.Chamon Breakup coupling effects on near-barrier quasi-elastic scattering of 6, 7Li on 144Sm NUCLEAR REACTIONS 144Sm(6Li, X), E=14-35 MeV; 144Sm(7Li, X), E=12-32 MeV; measured particle spectra, quasi-elastic scattering excitation functions and barrier distributions. Comparison with continuum discretized coupled-channel (CDCC) calculations.
doi: 10.1103/PhysRevC.80.034614
2008BH08 Phys.Rev. C 77, 065503 (2008) M.Bhattacharya, D.Melconian, A.Komives, S.Triambak, A.Garcia, E.G.Adelberger, B.A.Brown, M.W.Cooper, T.Glasmacher, V.Guimaraes, P.F.Mantica, A.M.Oros-Peusquens, J.I.Prisciandaro, M.Steiner, H.E.Swanson, S.L.Tabor, M.Wiedeking ft value of the 0+ → 0+ β+ decay of 32Ar: A measurement of isospin symmetry breaking in a superallowed decay RADIOACTIVITY 32Ar(β+) [from 9Be(36Ar, X), E=100 MeV/nucleon]; measured Eγ, Iγ, Ep, Ip, pγ-coin. 32Ar; deduced superallowed decay branching ratio, ft value, isospin symmetry breaking correction. 32Cl; deduced levels, J, π. 31S; deduced levels, π. Comparison with theoretical data. ATOMIC MASSES 32Cl; measured masses. Q-value method.
doi: 10.1103/PhysRevC.77.065503
2008CA17 Phys.Rev. C 78, 034605 (2008) O.Camargo, V.Guimaraes, R.Lichtenthaler, V.Scarduelli, J.J.Kolata, C.A.Bertulani, H.Amro, F.D.Becchetti, H.Jiang, E.F.Aguilera, D.Lizcano, E.Martinez-Quiroz, H.Garcia The 9Be(8Li, 9Be)8Li elastic-transfer reaction NUCLEAR REACTIONS 9Be(8Li, 9Be), E=27 MeV; measured angular distributions, σ(θ); deduced spectroscopic factors. 6,8Li(p, γ); deduced σ, reaction rates. Comparisons with DWBA and shell model calculations.
doi: 10.1103/PhysRevC.78.034605
2007BE19 Phys.Lett. B 647, 30 (2007) E.A.Benjamim, A.Lepine-Szily, D.R.Mendes, Jr., R.Lichtenthaler, V.Guimaraes, P.R.S.Gomes, L.C.Chamon, M.S.Hussein, A.M.Moro, A.Arazi, I.Padron, J.Alcantara Nunez, M.Assuncao, A.Barioni, O.Camargo, Jr., R.Z.Denke, P.N.de Faria, K.C.C.Pires Elastic scattering and total reaction cross section for the 6He + 27Al system NUCLEAR REACTIONS 27Al(6He, 6He), E=9.5, 11.0, 12.0, 13.4 MeV; measured σ, σ(θ). 6He deduced radius, deformation parameters. 27Al(6Li, 6Li), (7Li, 7Li), (9Be, 9Be), (16O, 16O), E≈7-45 MeV; analysed total σ. 6,7Li, 9Be, 16O deduced deformation parameters. Sao Paulo potential.
doi: 10.1016/j.physletb.2007.01.048
2007GU13 Phys.Rev. C 75, 054602 (2007) V.Guimaraes, R.Lichtenthaler, O.Camargo, A.Barioni, M.Assuncao, J.J.Kolata, H.Amro, F.D.Becchetti, H.Jiang, E.F.Aguilera, D.Lizcano, E.Martines-Quiroz, H.Garcia Neutron transfer reactions induced by 8Li on 9Be NUCLEAR REACTIONS 9Be(8Li, 8Li), 9Be(8Li, 7Li), 9Be(8Li, 9Li), E=27 MeV; measured σ and angular distributions. Deduced spectroscopic factors, compared results to optical model calculations.
doi: 10.1103/PhysRevC.75.054602
2007LI81 Eur.Phys.J. Special Topics 150, 27 (2007) R.Lichtenthaler, P.N.de Faria, A.Lepine-Szily, V.Guimaraes, O.Camargo, R.Denke, E.A.Benjamim, A.Barioni, K.C.C.Pires, D.J.Mendes, M.Assuncao, A.Arazi, I.Padron, P.R.S.Gomes Elastic scattering of 6He + 27Al and 7Be + 51V at RIBRAS NUCLEAR REACTIONS 27Al(6He, 6He'), E=9.5-13.4 MeV; 51V(7Be, 7Be'), E=26 MeV; measured reaction cross sections and angular distributions. Compared results to model calculations.
doi: 10.1140/epjst/e2007-00257-9
2006DE32 Phys.Rev. C 74, 024604 (2006) P.N.de Faria, R.Lichtenthaler, V.Guimaraes, A.Lepine-Szily, E.A.Benjamim, G.F.Lima, A.M.Moro Measurements of the 25Mg(11B, 12C)24Na and 25Mg(11B, 10Be)26Al proton transfer reactions NUCLEAR REACTIONS 25Mg(11B, 12C), (11B, 11B), (11B, 10Be), E=35 MeV; measured σ(E, θ); deduced spectroscopic factors. DWBA analysis.
doi: 10.1103/PhysRevC.74.024604
2006KU17 Eur.Phys.J. A 27, Supplement 1, 327 (2006) S.Kubono, T.Teranishi, M.Notani, H.Yamaguchi, A.Saito, J.J.He, Y.Wakabayashi, H.Fujikawa, G.Amadio, H.Baba, T.Fukuchi, S.Shimoura, S.Michimasa, S.Nishimura, M.Nishimura, Y.Gono, A.Odahara, S.Kato, J.Y.Moon, J.H.Lee, Y.K.Kwon, C.S.Lee, K.I.Hahn, Zs.Fulop, V.Guimaraes, R.Lichtenthaler Nuclear astrophysics at the east drip line NUCLEAR REACTIONS 4He(14O, p), E(cm) ≈ 1-3.5 MeV; measured Ep. 18Ne deduced resonance energies. 1H(23Mg, 23Mg), E(cm) ≈ 0.8-3.3 MeV; measured σ(E, θ). 24Al deduced possible resonance energies.
doi: 10.1140/epja/i2006-08-050-5
2005KU27 Nucl.Phys. A758, 733c (2005) S.Kubono, T.Teranishi, M.Notani, H.Yamaguchi, A.Saito, J.J.He, M.Wakabayashi, H.Fujikawa, G.Amadio, H.Baba, T.Fukuchi, S.Shimoura, S.Michimasa, S.Nishimura, M.Nishimura, Y.Gono, A.Odahara, S.Kato, J.Y.Moon, J.H.Lee, C.S.Lee, J.C.Kim, K.I.Hahn, T.Ishikawa, T.Hashimoto, H.Ishiyama, Y.X.Watanabe, M.H.Tanaka, H.Miyatake, Zs.Fulop, V.Guimaraes, R.Lichtenthaler Study of Stellar Reactions in Explosive Hydrogen Burning with CRIB NUCLEAR REACTIONS 4He(14O, p), E(cm) ≈ 1-3.6 MeV; measured proton spectrum. 1H(23Mg, p), E(cm) ≈ 0.6-3.5 MeV; measured elastic σ(θ). 24Al deduced excited states energies.
doi: 10.1016/j.nuclphysa.2005.05.132
2005LI56 Eur.Phys.J. A 25, Supplement 1, 733 (2005) R.Lichtenthaler, A.Lepine-Szily, V.Guimaraes, C.Perego, V.Placco, O.Camargo, Jr., R.Denke, P.N.de Faria, E.A.Benjamin, N.Added, G.F.Lima, M.S.Hussein, J.Kolata, A.Arazi Radioactive Ion beams in Brazil (RIBRAS)
doi: 10.1140/epjad/i2005-06-043-y
2005MO28 Nucl.Phys. A758, 158c (2005) J.Y.Moon, C.S.Lee, J.H.Lee, C.C.Yun, J.C.Kim, M.Youn, S.Kubono, T.Teranishi, J.J.He, M.Notani, S.Nishimura, M.Nishimura, V.Guimaraes, R.F.Lichtenthaler, S.Kato Study of proton resonances in 26Si and 27P by using the 25Al and 26Si radioactive ion beams NUCLEAR REACTIONS 1H(25Al, p), (26Si, p), E(cm)=0.5-3 MeV; measured recoil proton spectra; deduced excitation functions. 26Si, 27P deduced levels, proton resonance states. Comparison with shell model predictions.
doi: 10.1016/j.nuclphysa.2005.05.033
2004AS11 Phys.Rev. C 70, 054601 (2004) M.Assuncao, R.Lichtenthaler, V.Guimaraes, A.Lepine-Szily, G.F.Lima, A.M.Moro Higher order effects in the 16O(d, p)17O and 16O(d, n)17F transfer reactions NUCLEAR REACTIONS 16O(d, n), (d, p), E=2.29-3.27 MeV; calculated σ(E, θ); deduced strong polarization effect. Coupled channels approach, comparisons with data.
doi: 10.1103/PhysRevC.70.054601
2004GU21 Braz.J.Phys. 34, 1012 (2004) Nuclear Reaction Studies with Exotic Boron Beams NUCLEAR REACTIONS 9Be(14B, 13BX), E=60 MeV/nucleon; measured Eγ, Iγ, particle momentum distribution, σ(E). 13B deduced levels, J, π, asymptotic normalization coefficients. 2H(8B, α), E=28.5 MeV; measured Eα.
doi: 10.1590/S0103-97332004000500084
2004KU36 Braz.J.Phys. 34, 933 (2004) R.Kuramoto, R.Lichtenthaler, A.Lepine-Szily, V.Guimaraes, G.F.Lima, E.Benjamim, P.N.de Faria Spectroscopy of 6Li Using the 3He(7Li, α)6Li Reaction NUCLEAR REACTIONS 3He(7Li, α), E=31.2 MeV; measured Eα. 6Li deduced resonance energies, widths.
doi: 10.1590/S0103-97332004000500060
2004LE12 Nucl.Phys. A734, 331 (2004) A.Lepine-Szily, J.M.Oliveira, D.Galante, G.Amadio, R.Lichtenthaler, H.G.Bohlen, A.N.Ostrowski, A.Blazevic, C.Borcea, V.Guimaraes, V.Lapoux, G.Lima, F.de Oliveira Santos, N.A.Orr, P.Roussel-Chomaz, Th.Stolla, J.S.Winfield Spectroscopy of light proton-rich nuclei: 9C and 15F NUCLEAR REACTIONS 10B, 16O(14N, 15C), E=30 MeV/nucleon; measured particle spectra, angular distributions. 15F deduced resonance energies, J, π.
doi: 10.1016/j.nuclphysa.2004.01.060
2003BE38 Nucl.Instrum.Methods Phys.Res. A505, 377 (2003) F.D.Becchetti, M.Y.Lee, T.W.O'Donnell, D.A.Roberts, J.J.Kolata, L.O.Lamm, G.Rogachev, V.Guimaraes, P.A.DeYoung, S.Vincent The TwinSol low-energy radioactive nuclear beam apparatus: status and recent results NUCLEAR REACTIONS Pb(8Li, 8Li), (8Li, 8Li'), E=20-36 MeV; measured σ(E). 8Li deduced transition B(E2). 1H(7Be, 7Be), E=low; measured excitation function.
doi: 10.1016/S0168-9002(03)01101-X
2003GA04 Phys.Rev. C 67, 024602 (2003) L.R.Gasques, L.C.Chamon, D.Pereira, V.Guimaraes, A.Lepine-Szily, M.A.G.Alvarez, E.S.Rossi, Jr., C.P.Silva, B.V.Carlson, J.J.Kolata, L.Lamm, D.Peterson, P.Santi, S.Vincent, P.A.De Young, G.Peasley Experimental determination of the surface density for the 6He exotic nucleus NUCLEAR REACTIONS 58Ni(α, α), (6He, 6He), E=8.1, 9.0, 9.1, 9.6 MeV; measured σ(θ). 58Ni(α, α), E=82-288 MeV; analyzed σ(θ). 4,6He deduced ground-state nuclear densities. Unfolding method, comparison with model predictions.
doi: 10.1103/PhysRevC.67.024602
2003GU06 Phys.Rev. C 67, 064601 (2003) V.Guimaraes, S.Kubono, F.C.Barker, M.Hosaka, S.C.Jeong, I.Katayama, T.Miyachi, T.Nomura, M.H.Tanaka, Y.Fuchi, H.Kawashima, S.Kato, C.C.Yun, K.Ito, H.Orihara, T.Terakawa, T.Kishida, Y.Pu, S.Hamada, M.Hirai, H.Miyatake Structure of the unbound 11N nucleus by the (3He, 6He) reaction NUCLEAR REACTIONS 14N(3He, 6He), E=73.4 MeV; measured σ(E, θ). 11N deduced levels, J, π, resonance widths. DWBA analysis.
doi: 10.1103/PhysRevC.67.064601
2003GU22 Nucl.Phys. A722, 341c (2003) V.Guimaraes, R.Kuramoto, R.Lichtenthaler, G.Amadio, E.Benjamin, P.N.de Faria, A.Lepine-Szily, G.F.Lima, J.J.Kolata, G.Rogachev, F.D.Becchetti, T.O'Donnell, Y.Chen, J.Hinnefeld, J.Lapton Searching for resonances in the unbound 6Be and 5Li nuclei NUCLEAR REACTIONS 3He(7Li, α), E=31 MeV; 2H(8B, α), E=28.6 MeV; 2H(7Be, α), E=20.9 MeV; measured Eα, angular distributions. 6Li, 6Be; deduced resonance features.
doi: 10.1016/S0375-9474(03)01387-3
2003GU30 Braz.J.Phys. 33, 263 (2003) V.Guimaraes, S.Kubono, F.C.Barker, M.Hosaka, S.C.Jeong, I.Katayama, T.Miyachi, T.Nomura, M.H.Tanaka, Y.Fuchi, H.Kawashima, S.Kato, T.Kishida, Y.Pu, S.Hamada Spectroscopic Study of the Unbound 11N Nucleus NUCLEAR REACTIONS 14N(3He, 6He), E=73.4 MeV; measured particle spectra, σ(E, θ). 11N deduced resonance energies, J, π, widths. DWBA analysis.
doi: 10.1590/s0103-97332003000200017
2003HO22 Nucl.Phys. A719, 9c (2003) A.Horvath, A.Galonsky, N.Carlin, F.Deak, T.Gomi, V.Guimaraes, Y.Higurashi, K.Hiroshi, K.Ieki, Y.Iwata, A.Kiss, J.Kolata, T.Rauscher, H.Schelin, J.von Schwarzenberg, Z.Seres, S.Takeuchi, S.Typel, R.Warner, J.Weiner Measurements of astrophysical neutron capture cross sections via the inverse reaction NUCLEAR REACTIONS C, Al, Cu, Sn, Pb(15C, nX), E=35 MeV/nucleon; C, Al, Cu, Sn, Pb(9Li, nX), E=40 MeV/nucleon; measured neutron spectra, (fragment)(neutron)-coin, dissociation yields. 8Li, 14C(n, γ), E=low; deduced astrophysical reaction rates.
doi: 10.1016/S0375-9474(03)00951-5
2003KO07 Phys.Rev. C 67, 015806 (2003) H.Kobayashi, K.Ieki, A.Horvath, A.Galonsky, N.Carlin, F.Deak, T.Gomi, V.Guimaraes, Y.Higurashi, Y.Iwata, A.Kiss, J.J.Kolata, T.Rauscher, H.Schelin, Z.Seres, R.Warner Astrophysical reaction rate for the 8Li(n, γ)9Li reaction NUCLEAR REACTIONS Pb(9Li, n8Li), E=39.7 MeV/nucleon; measured neutron and lithium spectra. 8Li(n, γ), E not given; deduced σ, astrophysical reaction rate upper limits. Comparison with previous results.
doi: 10.1103/PhysRevC.67.015806
2003LE26 Nucl.Phys. A722, 512c (2003) A.Lepine-Szily, J.M.Oliveira, D.Galante, G.Amadio, V.Vanin, R.Lichtenthaler, V.Guimaraes, G.F.Lima, H.G.Bohlen, A.N.Ostrowski, A.Di Pietro, A.M.Laird, L.Maunoury, F.de Oliveira Santos, P.Roussel-Chomaz, H.Savajols, W.Trinder, A.C.C.Villari, A.de Vismes Spectroscopy of light proton-rich unbound nuclei: 15F, 10, 11N NUCLEAR REACTIONS 12C, 16O(14N, 15C), 10B(14N, 13B), (14N, 14B), E=30 MeV/nucleon; measured particle spectra. 15F, 10,11N deduced ground and excited states, resonance energies, widths.
doi: 10.1016/S0375-9474(03)01418-0
2003LI61 Braz.J.Phys. 33, 294 (2003) R.Lichtenthaler, A.Lepine-Szily, V.Guimaraes, G.F.Lima, M.S.Hussein Radioactive Ion beams in Brasil (RIBRAS)
doi: 10.1590/s0103-97332003000200025
2003SA07 Phys.Rev. C 67, 024606 (2003) P.Santi, J.J.Kolata, V.Guimaraes, D.Peterson, R.White-Stevens, E.Rischette, D.Bazin, B.M.Sherrill, A.Navin, P.A.DeYoung, P.L.Jolivette, G.F.Peaslee, R.T.Guray Structure of the 10Li nucleus investigated via the 9Li(d, p)10Li reaction NUCLEAR REACTIONS 2H(9Li, p), (13C, p), E=20 MeV/nucleon; measured particle spectra, (fragment)p-coin, angular distributions. 9,10Li deduced ground-state mass excess lower limits. 10Li deduced neutron decay branching ratio, resonance features. S800 spectrograph.
doi: 10.1103/PhysRevC.67.024606
2002LE16 Phys.Rev. C65, 054318 (2002) A.Lepine-Szily, J.M.Oliveira, Jr., V.R.Vanin, A.N.Ostrowski, R.Lichtenthaler, A.Di Pietro, V.Guimaraes, A.M.Laird, L.Maunoury, G.F.Lima, F.de Oliveira Santos, P.Roussel-Chomaz, H.Savajols, W.Trinder, A.C.C.Villari, A.de Vismes Observation of the Particle-Unstable Nucleus 10N NUCLEAR REACTIONS 7Li, 10,11B, 12C(14N, 14B), E=30 MeV/nucleon; measured particle spectra. 10N deduced ground-state resonance energy, width.
doi: 10.1103/PhysRevC.65.054318
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