NSR Query Results
Output year order : Descending NSR database version of May 8, 2024. Search: Author = M.Goncalves Found 28 matches. 2023CU03 Phys.Rev. C 107, 024613 (2023) E.Cupertino Gomes, U.B.RodrIguez, M.Goncalves, A.R.C.Pinheiro, B.M.Santos, C.R.R.Souza, L.R.Hirsch, S.B.Duarte Secondary particle predictions in quasifree proton scattering reactions in the 100-250 MeV energy range NUCLEAR REACTIONS 12C, 14N, 16O, 23Na, 31P, 32S, 36Cl, 39K, 40Ca, 56Fe, 64Cu, 65Zn, 79Se, 184W, 195Pt, 208Pb(p, X), E=100, 150, 200, 250 MeV; calculated proton and neutron yields. 12C(p, p'), (p, np), E=200 MeV; calculated σ(θ, E). C, O, Ca, Se, Pb(p, X), E=100, 250 MeV; calculated Ep (proton spectra), En (neutron spectra), σ(θ, E) for proton and neutron production. Al, Ti, Cu, Ag, Ta, Pb(p, π+), (p, π-), E=730 MeV; calculated pion multiplicity. Multicollisional Monte Carlo intranuclear cascade model. Determined the effects of the inclusion of an effective mass for bound baryons on yield, spectra, and angular distribution of secondary particles. Comparison to experimental data.
doi: 10.1103/PhysRevC.107.024613
2019RO22 J.Phys.(London) G46, 115109 (2019) U.B.Rodriguez, C.Z.Vargas, M.Goncalves, S.B.Duarte, F.Guzman Alpha half-lives calculation of superheavy nuclei with Qα-value predictions based on the Bayesian neural network approach RADIOACTIVITY 259Sg, 269Hs, 273Ds, 272Rg, 289,290Mc, 294Og(α); analyzed available data; deduced Q-values. Comparison with available data.
doi: 10.1088/1361-6471/ab2c86
2017GO17 Phys.Lett. B 774, 14 (2017) M.Goncalves, N.Teruya, O.A.P.Tavares, S.B.Duarte Two-proton emission half-lives in the effective liquid drop model RADIOACTIVITY 16Ne, 19Mg, 45Fe, 48Ni, 54Zn, 67Kr(2p); calculated Q-values and T1/2. Comparison with experimental data.
doi: 10.1016/j.physletb.2017.09.032
2016PI03 Phys.Rev. C 93, 034612 (2016) A.R.C.Pinheiro, L.P.G.De Assis, S.B.Duarte, B.M.Santos, M.Goncalves Multiparticle versus single sequential emission in nuclear evaporation processes NUCLEAR REACTIONS 208Pb, 200Hg(p, X), E=800, 1200, 1500 MeV; calculated neutron multiplicity versus excitation energy of the final nucleus using single sequential emission, and simultaneous multiparticle emission, charged-particle yields, channel branching ratios. Monte Carlo simulation for the effect of different emission channels on particle yield and fission process in compound nucleus modes of deexcitation. Comparison with experimental data. Relevance to acceleration driven system (ADS) reactors.
doi: 10.1103/PhysRevC.93.034612
2016SA06 Nucl.Phys. A948, 78 (2016) B.M.Santos, A.R.C.Pinheiro, M.Goncalves, S.B.Duarte, R.G.Cabral On the nucleon effective mass role to the high energy proton spallation reactions NUCLEAR REACTIONS Pb(p, x), E=0.8, 1.0, 1.2, 1.6, 1.8, 2.0 GeV; calculated time development of average E*, effective mass, neutron multiplicity, mass distribution during cascade and evaporation phases using TIERCE and INCL4 codes.
doi: 10.1016/j.nuclphysa.2016.01.048
2009LE22 Phys.Rev. C 80, 014606 (2009) T.N.Leite, N.Teruya, A.Dimarco, S.B.Duarte, O.A.P.Tavares, M.Goncalves 12O resonant structure evaluated by the two-proton emission process RADIOACTIVITY 12O(2p); analyzed characteristics of resonant ground state, decay energy distribution, channel distribution ratios, and widths using statistical model for the sequential and simultaneous two-proton emission decay modes. Comparison with experimental data.
doi: 10.1103/PhysRevC.80.014606
2004DU23 J.Phys.(London) G30, 1487 (2004) S.B.Duarte, O.A.P.Tavares, M.Goncalves, O.Rodriguez, F.Guzman, T.N.Barbosa, F.Garcia, A.Dimarco Half-life predictions for decay modes of superheavy nuclei NUCLEAR STRUCTURE Z=110-135; calculated α-decay, cluster-decay, and cold fission T1/2. Effective liquid-drop model. RADIOACTIVITY 287,288Mc, 283,284Nh, 279,280Rg(α); calculated T1/2, Qα. Effective liquid-drop model, comparison with data.
doi: 10.1088/0954-3899/30/10/014
2004GO61 Braz.J.Phys. 34, 919 (2004) M.Goncalves, E.C.de Oliveira, E.L.Medeiros, S.de Pina, S.B.Duarte Hot Hypernucleus Formation in High-Energy Photonuclear Reactions NUCLEAR REACTIONS C, Al, Ni(γ, X), E=1.2 GeV; calculated fragment charge and mass distributions, hypernucleus yields.
doi: 10.1590/s0103-97332004000500057
2003DE20 Nucl.Instrum.Methods Phys.Res. B211, 15 (2003) A.Deppman, O.A.P.Tavares, S.B.Duarte, J.D.T.Arruda-Neto, M.Goncalves, V.P.Likhachev, J.Mesa, E.C.de Oliveira, S.R.de Pina, O.Rodriguez A Monte Carlo method for nuclear evaporation and fission at intermediate energies NUCLEAR STRUCTURE 237Np, 238U, 232Th; calculated fissility vs excitation energy, competition with evaporation channels. Monte Carlo approach.
doi: 10.1016/S0168-583X(03)01265-5
2002DE35 J.Phys.(London) G28, 2259 (2002) S.R.de Pina, J.Mesa, A.Deppman, J.D.T.Arruda-Neto, S.B.Duarte, E.C.de Oliveira, O.A.P.Tavares, E.L.Medeiros, M.Goncalves, E.de Paiva Nucleon Effective Mass Effects on the Pauli-Blocking Function
doi: 10.1088/0954-3899/28/8/311
2002DE60 Phys.Rev. C 66, 067601 (2002) A.Deppman, O.A.P.Tavares, S.B.Duarte, J.D.T.Arruda-Neto, M.Goncalves, V.P.Likhachev, E. C.de Oliveira Photofissility of heavy nuclei at intermediate energies NUCLEAR REACTIONS 209Bi, 232Th, 238U, 237Np, 243Am(γ, F), E=200-1000 MeV; calculated fissility. 209Bi, 243Am(γ, F), E=200-1000 MeV; calculated photofission σ. Monte Carlo approach.
doi: 10.1103/PhysRevC.66.067601
2002DU16 At.Data Nucl.Data Tables 80, 235 (2002) S.B.Duarte, O.A.P.Tavares, F.Guzman, A.Dimarco, F.Garcia, O.Rodriguez, M.Goncalves Half-Lives for Proton Emission, Alpha Decay, Cluster Radioactivity, and Cold Fission Processes Calculated in a Unified Theoretical Framework RADIOACTIVITY 105Sb, 109I, 112,113Cs, 117La, 131Eu, 140,141Ho, 145,146,147Tm, 150,151Lu, 156,157Ta, 160,161Re, 165,166,167Ir, 171Au, 185Bi(p); calculated proton emission T1/2. 221Fr, 221,222,223,224,226Ra, 225Ac(14C); 228Th(20O); 230Th, 231Pa, 232,233,234U(24Ne); 234U(26Ne); 234U, 236,238Pu(28Mg); 238Pu(30Mg), (32Si); 242Cm(34Si); calculated cluster emission T1/2. 258,259Fm, 259,260Md, 258,262No(SF); calculated fission fragment mass distributions. Z=27-111; A=50-273; calculated T1/2, Q for p-decay, α-decay, cluster emission. Z=82-111; A=180-272; calculated cold fission T1/2. Effective liquid drop model, comparisons with data.
doi: 10.1006/adnd.2002.0881
2001DE41 Phys.Rev.Lett. 87, 182701 (2001) A.Deppman, O.A.P.Tavares, S.B.Duarte, E.C.de Oliveira, J.D.T.Arruda-Neto, S.R.de Pina, V.P.Likhachev, O.Rodriguez, J.Mesa, M.Goncalves Photofissility of Actinide Nuclei at Intermediate Energies NUCLEAR REACTIONS 237Np, 238U, 232Th(γ, F), E ≈ 200-1000 MeV; analyzed fissility; deduced role of proton and α evaporation. Monte Carlo approach.
doi: 10.1103/PhysRevLett.87.182701
2000DI17 Int.J.Mod.Phys. E9, 205 (2000) A.Dimarco, S.B.Duarte, O.A.P.Tavares, M.Goncalves, F.Garcia, O.Rodriguez, F.Guzman Effect of Nuclear Deformation on the Alpha-Decay Half-Life of Even-Even Alpha Emitters NUCLEAR STRUCTURE Z=52-108; calculated α-decay T1/2, deformation effects. Comparison with data.
doi: 10.1016/S0218-3013(00)00014-3
2000GA25 J.Phys.(London) G26, 755 (2000) F.Garcia, O.Rodriguez, M.Goncalves, S.B.Duarte, O.A.P.Tavares, F.Guzman Alpha Decay and Nuclear Deformation: The case for favoured alpha transitions of even-even emitters RADIOACTIVITY A=106-264(α); calculated T1/2 including quadrupole deformation effects. Comparison with experimental values.
doi: 10.1088/0954-3899/26/6/301
2000GO11 Eur.Phys.J. A 7, 435 (2000) M.Goncalves, M.Chiapparini, L.Castro, E.C.de Oliveira, S.B.Duarte, E.L.Medeiros Multiparticle Correlations in Resonance-Matter Formation NUCLEAR REACTIONS 12C(12C, X), 20Ne(20Ne, X), 40Ca(40Ca, X), 58Ni(58Ni, X), E=1-2 GeV/nucleon; calculated maximum number of resonances, particle population, pion multiplicity, density time evolution. Intranuclear cascade model with particle correlations, comparison with data.
doi: 10.1007/s100500050414
1999GU08 Phys.Rev. C59, R2339 (1999) F.Guzman, M.Goncalves, O.A.P.Tavares, S.B.Duarte, F.Garcia, O.Rodriguez Proton Radioactivity from Proton-Rich Nuclei RADIOACTIVITY 55Cu, 58Ge, 105Sb, 109I, 112,113Cs, 142Ho, 146,147Tm, 150,151Lu, 156,157Ta, 160,161Re, 165,166,167Ir, 171Au, 177,178,179Tl, 185,187Bi(p); calculated proton decay T1/2. Effective liquid drop model. Comparison with data.
doi: 10.1103/PhysRevC.59.R2339
1999RO01 Phys.Rev. C59, 253 (1999) O.Rodriguez, F.Guzman, S.B.Duarte, O.A.P.Tavares, F.Garcia, M.Goncalves New Valleys of Cold Fission and Cluster Radioactivity Processes from Nuclei Far from the β-Stability Line RADIOACTIVITY Rn, Po, Pb; calculated α-decay T1/2. Ba, Sn, Po, Bi; calculated cluster decay T1/2 in neutron-deficient isotopes; deduced shell effects. Geiger-Nutall systematics.
doi: 10.1103/PhysRevC.59.253
1998DE38 Phys.Lett. 434B, 1 (1998) S.de Pina, E.C.de Oliveira, E.L.Medeiros, S.B.Duarte, M.Goncalves Photonuclear K+ Production Calculation Near Threshold NUCLEAR REACTIONS 1H, 12C, 64Cu, 208Pb(γ, K+X), E=0.85-1.2 GeV; calculated pion, kaon multiplicities. 12C(γ, K+X), E=0.8-1.1 GeV; calculated σ(θ). Comparison with data.
doi: 10.1016/S0370-2693(98)00726-6
1998DU05 Phys.Rev. C57, 2516 (1998) S.B.Duarte, O.Rodriguez, O.A.P.Tavares, M.Goncalves, F.Garcia, F.Guzman Cold Fission Description with Constant and Varying Mass Asymmetries RADIOACTIVITY 234U(SF); calculated T1/2, fragments mass distributions. Comparison of constant, variable mass asymmetry descriptions. Alpha, cluster radioactivity also discussed.
doi: 10.1103/PhysRevC.57.2516
1998TA21 J.Phys.(London) G24, 1757 (1998) O.A.P.Tavares, S.B.Duarte, O.Rodriguez, F.Guzman, M.Goncalves, F.Garcia Effective Liquid Drop Description for Alpha Decay of Atomic Nuclei NUCLEAR STRUCTURE Z=52-111; calculated α-decay T1/2. Effective liquid drop model. Comparison with data.
doi: 10.1088/0954-3899/24/9/009
1997DU14 Phys.Rev. C56, 3414 (1997) S.B.Duarte, O.A.P.Tavares, M.Goncalves Importance of the Inner Potential Barrier in Nuclear Spontaneous Cold Fission Processes RADIOACTIVITY 234U, 242Pu, 248Cf, 252Cf(SF); calculated potential barrier for several decay modes; deduced inner barrier role.
doi: 10.1103/PhysRevC.56.3414
1997GO05 Phys.Rev. C55, 2625 (1997) M.G.Goncalves, E.L.Medeiros, S.B.Duarte Effect of Multiparticle Collisions on Pion Production in Relativistic Heavy-Ion Reactions NUCLEAR REACTIONS 40Ca(40Ca, X), E=2 GeV/nucleon; calculated N-body collisions frequency time evolution. 40Ca(40Ca, X), E ≤ 2 GeV/nucleon; analyzed pion multiplicity data, other aspects; deduced multi-baryonic collisions role.
doi: 10.1103/PhysRevC.55.2625
1997GO11 Phys.Lett. 406B, 1 (1997) M.Goncalves, S.de Pina, D.A.Lima, W.Milomem, E.L.Medeiros, S.B.Duarte Many-Body Cascade Calculation for Photonuclear Reactions NUCLEAR REACTIONS 27Al, 100Ru(γ, X), E=0.5-1.5 GeV; calculated Δ resonance population, pion multiplicity, residual nucleus excitation energy, multiplicity of emitted nucleons, proton spectra. Many-body cascade approach, comparison with one-body cascade model.
doi: 10.1016/S0370-2693(97)00662-X
1996DU04 Phys.Rev. C53, 2309 (1996) Effective Inertial Coefficient for the Dinuclear Regime of the Exotic Decay of Nuclei RADIOACTIVITY A ≈ 120-243; calculated α-, exotic decay T1/2; deduced effective inertial coefficient role. Geometric, incompressibility constraint relations used.
doi: 10.1103/PhysRevC.53.2309
1993GO18 Phys.Rev. C48, 2409 (1993) Effective Liquid Drop Description for the Exotic Decay of Nuclei RADIOACTIVITY 221Fr, 226,221,222,223,224Ra(14C); 228Th(20O); 231Pa(23F); 230Th, 231Pa, 232,234U(24Ne); 233U(25Ne); 234U, 236,238Pu(28Mg); 237Np(30Mg); 238Pu(32Si); 241Am, 242Cm(34Si); calculated exotic decay T1/2. Effective liquid drop model, shell corrections.
doi: 10.1103/PhysRevC.48.2409
1963GO21 Compt.Rend. 257, 887 (1963) Spectre d'Electrons de Conversion Associes a la Transmutation du Radium 226 en Radon 222 NUCLEAR STRUCTURE 226Ra; measured not abstracted; deduced nuclear properties.
1961FE04 Compt.Rend. 253, 98 (1961) J.G.Ferreira, M.T.Goncalves, L.Ferreira-Salgueiro The Branching Ratio of Thorium C (Bismuth-212) NUCLEAR STRUCTURE 212Bi; measured not abstracted; deduced nuclear properties.
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