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NSR database version of April 29, 2024.

Search: Author = R.F.Simoes

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2021SI11      Appl.Radiat.Isot. 170, 109559 (2021)

R.F.P.Simoes, C.J.da Silva, R.L.da Silva, L.V.de Sa, R.Poledna, A.E.de Oliveira, A.Iwahara, P.A.L.da Cruz, J.U.Delgado

Standardization of ²²³Ra by live-time anticoincidence counting and gamma-ray emission determination

RADIOACTIVITY ²²³Ra(α); measured activity concentrations by 4πβαγ live-time anticoincidence counting (LTAC) method, Eγ, Iγ, E(x ray), I(x ray) using ionization chambers, scintillation detectors, and HPGe detector at LNMRI lab in Rio de Janeiro; deduced activity standardization of ²²³Ra source, emission probabilities of x rays and γ rays. Comparison with evaluated data by DDEP-LNHB.

doi: 10.1016/j.apradiso.2020.109559
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Data from this article have been entered in the XUNDL database. For more information, click here.

2019CR04      Phys.Rev. C 99, 054623 (2019)

E.Crema, V.A.B.Zagatto, J.M.B.Shorto, B.Paes, J.Lubian, R.F.Simoes, D.S.Monteiro, J.F.P.Huiza, N.Added, M.C.Morais, P.R.S.Gomes

Reaction mechanisms of the ¹⁶0 + ⁶⁵Cu system

NUCLEAR REACTIONS ⁶⁵Cu(¹⁶O, X), (¹⁶O, ¹⁶O), E=30.0-48.0 MeV; ¹⁶O(⁶⁵Cu, ⁶⁹Ga)¹²C, E=30.0-48.0 MeV; measured projectile-like fragments (PLFs), σ(E, θ), quasielastic barrier distributions using E-ΔE proportional telescope for particle detection at the Sao Paulo University Pelletron Accelerator Facility; analyzed previous experimental results for excitation functions and quasielastic barrier distributions in ⁶³Cu(¹⁶O, X), (¹⁸O, X) and ⁶⁵Cu(¹⁶O, X) reactions. Comparison with large-scale coupled-channel, and coupled-reaction-channel calculations.

doi: 10.1103/PhysRevC.99.054623
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetD0957.

2019CR07      Phys.Rev. C 100, 054608 (2019)

E.Crema, B.Paes, V.A.B.Zagatto, J.F.P.Huiza, J.Lubian, J.M.B.Shorto, R.F.Simoes, D.S.Monteiro, N.Added, M.C.Morais, P.R.S.Gomes

Strong neutron-transfer coupling effects in the reaction mechanism of the ¹⁸O + ⁶⁴Zn system at energies near the Coulomb barrier

NUCLEAR REACTIONS ⁶⁴Zn(¹⁸O, ¹⁸O'), (¹⁸O, ¹⁶O)⁶⁶Zn, (¹⁸O, ¹⁷O)⁶⁵Zn, (¹⁸O, ¹⁵N)⁶⁷Ga, (¹⁸O, ¹⁴N)⁶⁸Ga, E=30-45 MeV; measured reaction products using a gas E-ΔE Si detector at the Pelletron laboratory of the University of Sao Paulo; deduced quasielastic σ(E) and barrier distribution (QEBD), σ(E_x) for states in ⁶⁶Zn, ⁶⁷Ga, ⁶⁸Ga for the 2n-, α-, and triton-transfer reactions, respectively. ⁶⁴Zn(¹⁶O, ¹⁶O'), (¹⁶O, X), (¹⁷O, ¹⁷O'), (¹⁷O, X), E=30-45 MeV; analyzed data for quasielastic σ(E) and barrier distributions. Comparison with coupled reaction channel (CRC) calculations.

doi: 10.1103/PhysRevC.100.054608
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2019ZA08      Phys.Rev. C 100, 044602 (2019)

V.A.B.Zagatto, E.Crema, J.M.B.Shorto, M.C.Morais, J.Lubian, N.Added, R.F.Simoes, D.S.Monteiro, J.F.P.Huiza, B.Paes, P.R.S.Gomes

Scattering of ^{16, 18}O beams on ^{63, 65}Cu targets: A systematic study of different reaction channels

NUCLEAR REACTIONS ⁶⁵Cu(¹⁸O, ¹⁸O'), E=30-48 MeV; measured reaction products, ¹⁸O spectra, σ(E), excitation functions at the Pelletron 8UD accelerator of the Sao Paulo University; deduced quasielastic barrier distributions (QEBD). ^63,65Cu(¹⁸O, ¹⁸O'), (¹⁶O, ¹⁶O'), E/V_B=0.7-1.2 MeV; ^63,65Cu(¹⁸O, ¹⁶O), E(cm)=25-40 MeV; ⁶⁵Cu(¹⁸O, ¹⁹F), (¹⁸O, ¹⁴C), E(cm)=25-40 MeV; analyzed experimental data using coupled reaction channel calculations; deduced proton pickup, two neutron and α-stripping reaction channel excitation functions.

doi: 10.1103/PhysRevC.100.044602
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2018CR04      Phys.Rev. C 98, 044614 (2018)

E.Crema, V.A.B.Zagatto, J.M.B.Shorto, B.Paes, J.Lubian, R.F.Simoes, D.S.Monteiro, J.F.P.Huiza, N.Added, M.C.Morais, P.R.S.Gomes

Reaction mechanisms of the ¹⁸0 + ⁶³Cu system at near-barrier energies

NUCLEAR REACTIONS ⁶³Cu(¹⁸O, ¹⁸O), (¹⁸O, ¹⁷O), (¹⁸O, ¹⁶O), (¹⁸O, ¹⁹F), (¹⁸O, ¹⁴C), E=30.0-48.0 MeV; measured reaction products, σ(E) for quasielastic and for 2n-, p- and α-transfer channels using ΔE-E telescopes at the Pelletron Laboratory of the University of Sao Paulo; deduced quasielastic barrier distributions, and that two-neutron transfer process much more relevant than the one-neutron-transfer process; calculated spectroscopic amplitudes using large-scale shell-model. Comparison of σ(E) data with coupled channel (CC) and coupled reaction channel (CRC) calculations using FRESCO code.

doi: 10.1103/PhysRevC.98.044614
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetD0986.

2011CR03      Phys.Rev. C 84, 024601 (2011)

E.Crema, D.R.Otomar, R.F.Simoes, A.Barioni, D.S.Monteiro, L.K.Ono, J.M.B.Shorto, J.Lubian, P.R.S.Gomes

Near-barrier quasielastic scattering as a sensitive tool to derive nuclear matter diffuseness

NUCLEAR REACTIONS ⁶⁰Ni(¹⁶O, X), (¹⁸O, X), E=30.0-48.0 MeV; measured particle spectra, σ(E), quasielastic excitation functions; deduced quasielastic barrier distributions. Comparison with coupled channel calculations using a double-folding potential calculations.

doi: 10.1103/PhysRevC.84.024601
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetD0658.

2010HU16      Phys.Rev. C 82, 054603 (2010)

J.F.P.Huiza, E.Crema, A.Barioni, D.S.Monteiro, J.M.B.Shorto, R.F.Simoes, P.R.S.Gomes

Quasi-elastic barrier distribution of the ¹⁷O + ⁶⁴Zn system and the derivation of the ¹⁷O nuclear matter diffuseness

NUCLEAR REACTIONS ⁶⁴Zn(¹⁷O, X), E=30.0-46.0 MeV; measured particle spectra, quasi-elastic σ(E); deduced quasi-elastic barrier distribution, and one-neutron stripping excitation function. Comparison with coupled-channel (CC) calculations.

doi: 10.1103/PhysRevC.82.054603
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2008SH24      Phys.Rev. C 78, 064610 (2008)

J.M.B.Shorto, E.Crema, R.F.Simoes, D.S.Monteiro, J.F.P.Huiza, N.Added, P.R.S.Gomes

Effects of the target spin on the reaction mechanism of the ¹⁶O + ⁶³Cu system

NUCLEAR REACTIONS ⁶³Cu(¹⁶O, ¹⁶O), E=30.0-48.0 MeV; measured σ, angular distributions; deduced experimental barrier distributions. Comparison with coupled channel calculations.

doi: 10.1103/PhysRevC.78.064610
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2007HU15      Phys.Rev. C 75, 064601 (2007)

J.F.P.Huiza, E.Crema, D.S.Monteiro, J.M.B.Shorto, R.F.Simoes, N.Added, P.R.S.Gomes

Simultaneous analysis of quasielastic, elastic, and inelastic scattering and of fusion in the ¹⁶O+⁶⁴Zn system

NUCLEAR REACTIONS ⁶⁴Zn(¹⁶O, X), E=30-50 MeV; measured quasielastic excitation function. Deduced quasielastic barrier distribution. Compared results to coupled channel calculations.

doi: 10.1103/PhysRevC.75.064601
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2003MO19      Nucl.Phys. A725, 60 (2003)

D.S.Monteiro, R.F.Simoes, J.M.B.Shorto, A.M.Jacob, L.K.Ono, L.Paulucci, N.Added, E.Crema

Quasi-elastic barrier distribution of the ^{16, 18}O + ⁹²Mo

NUCLEAR REACTIONS ⁹²Mo(¹⁶O, X), (¹⁸O, X), E=39-64 MeV; measured quasi-elastic excitation functions; deduced fusion barrier distributions. Coupled channels calculations.

doi: 10.1016/S0375-9474(03)01603-8
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2002SI05      Phys.Lett. 527B, 187 (2002)

R.F.Simoes, D.S.Monteiro, L.K.Ono, A.M.Jacob, J.M.B.Shorto, N.Added, E.Crema

Strong Coupled-Channel Effects in the Barrier Distributions of ^{16, 18}O + ⁵⁸Ni

NUCLEAR REACTIONS ⁵⁸Ni(¹⁶O, X), (¹⁸O, X), E=30-50 MeV; measured large-angle elastic, inelastic, and transfer σ; deduced fusion barrier distributions. Comparison with coupled-channel calculations.

doi: 10.1016/S0370-2693(02)01171-1
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