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NSR database version of May 24, 2024.

Search: Author = S.De Barros

Found 29 matches.

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2001PE04      Eur.Phys.J. A 10, 69 (2001)

R.J.Peterson, S.de Barros, H.Schechter, S.G.Mashnik, A.G.daSilva, J.C.Suita

Fission Probabilities Across the π-Nucleon Delta Resonance

NUCLEAR REACTIONS 209Bi, 235U(π+, F), E ≈ 50-250 MeV; measured σ for pion-induced fission; deduced fission probabilities, reaction mechanism features. Comparison with statistical model predictions.

doi: 10.1007/s100500170145
Citations: PlumX Metrics


2000SA08      J.Phys.(London) G26, 301 (2000)

W.M.S.Santos, S.de Barros, J.C.Suita

Cross Sections and Thermonuclear Reaction Rates for 181Ta(α, n)184Re, 169Tm(α, n)172Lu, 191Ir(α, n)194Au and 197Au(α, n)200Tl

NUCLEAR REACTIONS 181Ta(α, n), E=14-28 MeV; measured σ. 181Ta, 169Tm, 191Ir, 197Au(α, n), E=12-32 MeV; calculated σ; deduced thermonuclear reaction rates. Comparison with data.

doi: 10.1088/0954-3899/26/3/308
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetA0090.


1997DE34      Z.Phys. A359, 35 (1997)

S.de Barros, A.G.da Silva, J.C.Suita, R.J.Peterson

Barriers for Pion-Induced Fission Near A = 208

NUCLEAR REACTIONS 197Au, 203,205Tl, 206,207,208Pb, 209Bi, 231Pa(π-, F), (π+, F), 181Ta(π+, F), E=150 MeV; measured fission σ; deduced fission barriers, reaction mechanism features. Solid state nuclear track detectors.

doi: 10.1007/s002180050364
Citations: PlumX Metrics


1997SU17      Nucl.Sci.Eng. 126, 101 (1997)

J.C.Suita, A.G.da Silva, L.T.Auler, S.de Barros

Neutron-Induced Reaction Cross Sections Between 9 and 14 MeV

NUCLEAR REACTIONS 58Ni, 59Co(n, p), 51V(n, α), 59Co(n, 2n), E=9-14 MeV; measured residuals production σ vs E, isomer ratios in 58Ni(n, p) reaction. Hauser-Feshbach model analyses.

doi: 10.13182/NSE97-A24461
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 dataset31498.


1995PE11      Z.Phys. A352, 181 (1995)

R.J.Peterson, S.de Barros, I.O.de Souza, M.B.Gaspar, H.A.Khan, S.Manzoor

Mass and Energy Dependence of Pion-Induced Fission

NUCLEAR REACTIONS Fe, Cu, 93Nb, Ag, Cd(π+, F), E=80, 100 MeV; measured binary, ternary fission σ; deduced fission probability. Data on other nuclei, other (π-, F) reactions analyzed.

doi: 10.1007/BF01298906
Citations: PlumX Metrics


1992DE22      Nucl.Phys. A542, 511 (1992)

S.de Barros, I.O.de Souza, M.B.Gaspar, R.J.Peterson

Pion-Induced Fission of Actinide Targets

NUCLEAR REACTIONS 209Bi, 231Pa, 233,234,235U, 237Np, 241,242Pu(π+, F), (π-, F), E=131, 138 MeV; measured fission σ.

doi: 10.1016/0375-9474(92)90255-I
Citations: PlumX Metrics


1986DE04      Z.Phys. A323, 101 (1986)

S.de Barros, S.D.de Magalhaes, H.Wolf, J.Barreto, J.Eichler, N.Lisbona, I.O.de Souza, D.M.Vianna

Excitation Function and Half-Life for the Fission Isomer 240mPu from the 238U(α, 2n)240mPu Reaction

RADIOACTIVITY 240mPu(SF) [from 238U(α, 2n), E=20.1-27.3 MeV]; measured T1/2.

NUCLEAR REACTIONS, ICPND 238U(α, 2n), E=20.1-27.3 MeV; measured residual fission isomer production σ(E). 240mPu deduced delayed fission σ, isomeric σ ratio.

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetD0691.


1985EI02      Phys.Rev. A32, 789 (1985)

J.Eichler, S.de Barros

Coherent Scattering of 59.54-keV γ Rays by Al, Cu, Zn, Cd, and Pb

ATOMIC PHYSICS 27Al, Cu, Zn, Cd, Pb(γ, γ), E=59.54 keV; measured coherent σ(θ). Second-order perturbation theory.

doi: 10.1103/PhysRevA.32.789
Citations: PlumX Metrics


1982EI02      Z.Naturforsch., 37a, 1124 (1982)

J.Eichler, S.de Barros, A.M.Goncalves

Compton Cross Section of 662 keV Photons from the K-Shell of Co, Cu, Ge, , Nb, Mo and Ag

ATOMIC PHYSICS Co, Cu, Ge, Nb, Mo, Ag(γ, X), E=662 keV; measured I(K X-ray); deduced photoelectric, Compton σ(total).


1981DE23      Z.Naturforsch. 36a, 595 (1981)

S.de Barros, J.Eichler, O.Goncalves, M.Gaspar

Experiments on Rayleigh Scattering of 145 keV and 317 keV and Photons

ATOMIC PHYSICS Pb, W, Sn, Cd, Ag, Mo, Cu(γ, γ), E=145, 317 keV; measured σ(θ). Dirac-Hartree-Fock-Slater form factor calculations, Rayleigh scattering.


1981DE30      Phys.Rev. C24, 1765 (1981)

S.de Barros, J.Eichler, M.Gaspar, O.Goncalves

Rayleigh Scattering of 468 keV Photons by Different Atoms

ATOMIC PHYSICS Pb, W, Sn, Cd, Ag, Mo, Cu(γ, γ), E=468 keV; measured σ(θ). Rayleigh scattering, Dirac-Hartree-Fock-Slater wave functions.

doi: 10.1103/PhysRevC.24.1765
Citations: PlumX Metrics


1980DE16      Phys.Rev. C22, 332 (1980)

S.de Barros, O.Goncalves, M.Gaspar, J.R.Moreira

Elastic Scattering of 412, 468, and 662 keV γ Rays

NUCLEAR REACTIONS U, Pt, W, Ba, Cd, Ag(γ, γ), E=412, 468, 662 keV [from 198Au, 137Cs, 192Ir]; measured σ(Eγ, θ); deduced Rayleigh amplitudes. Dirac-Hartree-Fock-Slater form factor.

doi: 10.1103/PhysRevC.22.332
Citations: PlumX Metrics


1974AL25      Z.Naturforsch. 29a, 1917 (1974)

S.C.Alves, S.de Barros, A.Goncalves

Energy Levels of Pt197

RADIOACTIVITY 197Ir; measured Eγ, Iγ; deduced log ft lower limits. 197Pt deduced levels, J, π.


1974CA15      Z.Naturforsch. 29a, 702 (1974)

L.F.Canto, S.de Barros

Energy Levels of 53Mn from the β-Decay of 53Fe

RADIOACTIVITY 53Fe; measured Eγ, Iγ. 53Mn deduced levels, log ft, J, π.


1974DE10      Phys.Lett. 49B, 113 (1974)

S.De Barros, M.J.Bechara, T.Borello-Lewin, V.Paar

Spectroscopic Factors of Negative-Parity Multiplet States in Odd Sn Isotopes

NUCLEAR STRUCTURE 113,115,117,119,121,123,125Sn; calculated S.

doi: 10.1016/0370-2693(74)90485-7
Citations: PlumX Metrics


1970DE34      Z.Naturforsch. 25a, 1250 (1970)

S.de Barros, P.R.Maurenzig, G.Baptista, L.F.Canto, A.G.de Pinho, J.M.F.Jeronymo

Decay Schemes of Mo91 and Mo91m

RADIOACTIVITY 91,91mMo; measured Eγ, Iγ; deduced log ft. 91Nb deduced levels.


1969AL09      Nucl.Phys. A134, 118 (1969)

R.N.Alves, S.de Barros, P.L.Chevillon, J.Julien, J.Morgenstern, C.Samour

Determination du Spin et des Parametres des Resonances pour Cl+n, Cu+n, Ba+n et Nd+n

NUCLEAR REACTIONS Cl(n, X), E < 115 keV; Cu(n, X), E < 32 keV; Ba(n, X), E < 1300 eV; Nd(n, X), E < 740 eV; measured σ(nt)(E). 36,38Cl, 64,66Cu, 131,133,135,136,137,138Ba, 144,145,146,149,151Nd deduced resonances, resonance parameters, strength function.

doi: 10.1016/0375-9474(69)90688-5
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 dataset20688.


1969DE09      Nucl.Phys. A131, 305 (1969)

S.de Barros, V.D.Huynh, J.Julien, J.Morgenstern, C.Samour

Determination du Spin et des Parametres des Resonances pour 107,109Ag+n, 160Tm+n, Pt+n de 4 eV a 830 eV

NUCLEAR REACTIONS 107,109Ag, 169Tm, Pt(n, X), E=4-830 eV; measured σ(nT)(E). 108,110Ag, 170Tm, 193,195,196,197,199Pt deduced resonances, resonance parameters, J. Time-of-flight method.

doi: 10.1016/0375-9474(69)90538-7
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 dataset20685.


1969DO11      Z.Naturforsch. 24a, 1196 (1969)

L.C.M.do Amaral, C.F.de Barros Leite, J.M.F.Jeronymo, A.G.de Pinho, D.Russo, S.de Barros

Decay Scheme of 118In (4.45 min)

RADIOACTIVITY 118In [from 119Sn(γ, p)]; measured T1/2, Eγ, Iγ. Deduced log ft. 118Sn deduced levels, Ge(Li) detector.


1969JU01      Nucl.Phys. A132, 129 (1969); UCRL-TRANS-10397

J.Julien, R.Alves, S.de Barros, V.D.Huynh, J.Morgenstern, C.Samour

Variations de la Largeur Radiative Totale Gamma γ en Fonction du Nombre de Masse A et de la Valeur du Spin J = I(1/2)

NUCLEAR REACTIONS Fe, Cu, Zn, Ga, As, Se, Br, Zr, Nb, Mo, Ag, Cd, Sn, Ba, La, Pr, Nd, Gd, Tb, Tm, W, Pt, Au, Hg(n, X), E = 4-2000 eV; measured σ(nγ). 57Fe, 64,66Cu, 65,66,68Zn, 70,72Ga, 76As, 75,77,78,79Se, 80,82Br, 92,97Zr, 94Nb, 96,97,98Mo, 108,110Ag, 111,112,113,114Cd, 113,117,118,119,120,125Sn, 133,135,136Ba, 140La, 142Pr, 144,146Nd, 156,158Gd, 160Tb, 170Tm, 184W, 193,195,196,197,199Pt, 198Au, 199,200,202Hg deduced resonances, resonance parameters, γ-width, J, level spacing D.

doi: 10.1016/0375-9474(69)90618-6
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 dataset20687.


1969SA01      Nucl.Phys. A123, 581 (1969)

C.Samour, J.Julien, R.N.Alves, S.de Barros, J.Morgenstern

Capture Radiative Partielle des Neutrons de Resonance dans le Tungstene

NUCLEAR REACTIONS W(n, γ), E=7-360 eV; measured Eγ, Iγ, σ(E; Eγ). 183,184,185,187W deduced levels, J. 184W deduced resonances. Ge(Li) detector.

doi: 10.1016/0375-9474(69)91006-9
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 dataset20677.


1968DA23      Notas Fis.Centro Brasil.Pesquisas Fis. 14, 226 (1968)

A.G.da Silva, R.H.Topke, S.de Barros, S.Calzavara

Search for New Transitions in the Decay of 164Ho

RADIOACTIVITY 164Ho[from 165Ho(γ, n)]; measured Eγ, Iγ, T1/2; deduced log ft.


1967MO16      Nucl.Phys. A102, 602 (1967); Erratum Nucl.Phys. A149, 684 (1970)

J.Morgenstern, S.De Barros, A.Bloch, P.L.Chevillon, V.D.Huynh, H.E.Jackson, J.Julien, C.Lopata, C.Samour

Analyse des Parametres de Resonances du Cobalt et du Manganese, Induites par des Neutrons d'Energie Inferieure a 120 keV

NUCLEAR REACTIONS 59Co(n, X), E < 500 keV; 55Mn(n, X), E < 80 keV; measured σ(E); deduced potential scattering length. 60Co, 56Mn deduced resonance parameters, strength functions.

doi: 10.1016/0375-9474(67)90398-3
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 dataset20683.


1966JU01      Nucl.Phys. 76, 391(1966)

J.Julien, S.De Barros, G.Bianchi, C.Corge, V.D.Huynh, G.Le Poittevin, J.Morgenstern, F.Netter, C.Samour, R.Vastel

Determination du Spin et des Parametres des Resonances pour 197Au+n de 10 eV a 1000 eV

NUCLEAR REACTIONS 197Au(n, γ), E = 10-1000 eV; measured σ(ns), σ(nγ). 198Au deduced resonances, resonance parameters, J.

doi: 10.1016/0029-5582(66)90034-4
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 dataset20686.


1966MO26      Proc.Intern.Conf.Study of Nucl.Struct.with Neutrons, Antwerp, Belgium (1965), M.N.De Mevergnies, P.Van Assche, J.Vervier, Eds., North-Holland Publishing Co., Amsterdam, p.531 (1966); EANDC-50-S, Paper 86

J.Morgenstern, S.De Barros, G.Bianchi, C.Corge, V.Huynh, J.Julien, G.Le poittevin, F.Netter, C.Samour

Neutron Total Cross Section Measurements on V, Co, Mn


1966MO27      Proc.Intern.Conf.Study of Nucl.Struct.with Neutrons, Antwerp, Belgium (1965), M.N.De Mevergnies, P.Van Assche, J.Vervier, Eds., North-Holland Publishing Co., Amsterdam, p.531 (1966); EANDC-50-S, Paper 87

J.Morgenstern, S.De Barros, G.Bianchi, C.Corge, P.L.Chevillon, V.Huynh, J.Julien, G.Le Poittevin, F.Netter, C.Samour

Strength Function Values from A=50 up to A=201


1965HU12      Nucl.Instr.Methods 36, 29 (1965)

V.D.Huynh, J.P.Meinadier, S.De Barros, J.Julien, G.Le Poittevin, J.Morgenstern, F.Netter, C.Samour

Traitement sur Ordinateur des Spectres de Rayons γ de Capture Obtenus a l'Aide d'un Cristal Central Associe a un Cristal Annulaire

NUCLEAR STRUCTURE 64Cu; measured not abstracted; deduced nuclear properties.

doi: 10.1016/0029-554X(65)90402-7
Citations: PlumX Metrics


1965JU02      Nucl.Phys. 66, 433 (1965)

J.Julien, S.De Barros, V.D.Huynh, G.Le Poittevin, J.Morgenstern, F.Netter, C.Samour

Variation de la Fonction Densite (Strength Function) avec la Valeur du Spin

doi: 10.1016/0029-5582(65)90191-4
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 dataset20683.


1965LE20      Nucl.Phys. 70, 497(1965)

G.Le Poittevin, S.De Barros, V.D.Huynh, J.Julien, J.Morgenstern, F.Netter, C.Samour

Determination des Fonctions Densite (Strength Functions) S0 et S1 dans Nb par Identification de la Nature des Resonances de Neutrons

NUCLEAR REACTIONS 93Nb(n, X), E = 30-4000 eV; measured σ(E), γ. 94Nb deduced levels, L, J, resonance parameters g level-width n, level-width, γ-width, average width/spacing.

doi: 10.1016/0029-5582(65)90450-5
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 dataset20682.


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