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NSR database version of April 11, 2024.

Search: Author = R.J.de Boer

Found 16 matches.

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2015CH19      J.Phys.(London) G42, 055102 (2015)

L.C.Chamon, L.R.Gasques, G.P.A.Nobre, E.S.Rossi, Jr, R.J.de Boer, C.Seymour, M.Wiescher, G.G.Kiss

Evidence of a slight nuclear transparency in the alpha-nucleus systems

NUCLEAR REACTIONS 120,130Te(α, α'), E<15 MeV; calculated inelastic σ(θ). EMPIRE nuclear model code, comparison with available data.

doi: 10.1088/0954-3899/42/5/055102
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC1739.


2015DE11      Phys.Rev. C 91, 045804 (2015)

R.J.de Boer, D.W.Bardayan, J.Gorres, P.J.LeBlanc, K.V.Manukyan, M.T.Moran, K.Smith, W.Tan, E.Uberseder, M.Wiescher, P.F.Bertone, A.E.Champagne, M.S.Islam

Low energy scattering cross section ratios of 14N(p, p)14N

NUCLEAR REACTIONS 14N(p, p), E=1-4 MeV; measured E(p), I(p), σ(θ, E) at Notre Dame Van de Graaff accelerator facility. 15O; deduced levels, resonances, l-transfers, J, π, resonance parameters, widths. R-matrix analysis. Discussed relevance of proton scattering data for constraining astrophysically important capture rate analyses.

doi: 10.1103/PhysRevC.91.045804
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC2160. Data from this article have been entered in the XUNDL database. For more information, click here.


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
Citations: PlumX Metrics


2014DE13      Phys.Rev. C 89, 055802 (2014)

R.J.de Boer, A.Best, J.Gorres, K.Smith, W.Tan, M.Wiescher, R.Raut, G.Rusev, A.P.Tonchev, W.Tornow

Photoneutron strengths in 26Mg at energies of astrophysical interest

NUCLEAR REACTIONS 26Mg(polarized γ, n), [circularly polarized γ beam produced in Compton backscattering of laser photons from E=498-548 MeV electrons], E=10.80-12.05 MeV; measured Eγ, Iγ, E(n), I(n), time-of-flight spectra, photoneutron σ(E) at HIγS facility of TUNL. 26Mg; deduced level energies above S(n), resonance strengths, comparison with 25Mg(n, γ)26Mg by R-matrix analysis. Relevance to astrophysically important 22Ne(α, n)25Mg reaction.

doi: 10.1103/PhysRevC.89.055802
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetL0197. Data from this article have been entered in the XUNDL database. For more information, click here.


2014DE32      Phys.Rev. C 90, 035804 (2014)

R.J.de Boer, J.Gorres, K.Smith, E.Uberseder, M.Wiescher, A.Kontos, G.Imbriani, A.Di Leva, F.Strieder

Monte Carlo uncertainty of the 3He (α, γ)7Be reaction rate

NUCLEAR REACTIONS 3He(α, γ)7Be, E(cm)=0.09-3.2 MeV; analyzed ten individual experimental measurements to extract the uncertainties on the cross section and corresponding reaction rate through a global R-matrix analysis using AZURE2 computer code; deduced astrophysical S factor and reaction rates. Relevance to neutrino production in our sun through the pp-II and pp-III chains.

doi: 10.1103/PhysRevC.90.035804
Citations: PlumX Metrics


2014MO35      Nucl.Instrum.Methods Phys.Res. A767, 359 (2014)

D.J.Mountford, R.J.de Boer, P.Descouvemont, A.St.J.Murphy, E.Uberseder, M.Wiescher

Evaluation of the implementation of the R-matrix formalism with reference to the astrophysically important 18F(pα)15O reaction

NUCLEAR REACTIONS 18F(p, α), E(cm)=0.6-1.6 MeV; calculated resonance parameter widths, σ(θ), S-factors. R-matrix formalism, AZURE code.

doi: 10.1016/j.nima.2014.08.047
Citations: PlumX Metrics


2013DE03      Phys.Rev. C 87, 015802 (2013)

R.J.de Boer, J.Gorres, G.Imbriani, P.J.LeBlanc, E.Uberseder, M.Wiescher

R-matrix analysis of 16O compound nucleus reactions

NUCLEAR REACTIONS 15N(p, γ)16O, 15N(p, α)12C, 15N(p, p), E<1.8 MeV; 12C(α, p)15N, 12C(α, α), 12C(α, γ)16O, E=6.8-8.3 MeV; analyzed S factors, σ(E, θ), yields for all available reaction channels simultaneously using a multichannel R-matrix code AZURE. 16O; deduced R-matrix description for the broad level structure.

doi: 10.1103/PhysRevC.87.015802
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC1825.


2013HE21      Phys.Lett. B 725, 287 (2013)

J.J.He, S.Z.Chen, C.E.Rolfs, S.W.Xu, J.Hu, X.W.Ma, M.Wiescher, R.J.de Boer, T.Kajino, M.Kusakabe, L.Y.Zhang, S.Q.Hou, X.Q.Yu, N.T.Zhang, G.Lian, Y.H.Zhang, X.H.Zhou, H.S.Xu, G.Q.Xiao, W.L.Zhan

A drop in the 6Li(p, γ)7Be reaction at low energies

NUCLEAR REACTIONS 6Li(p, γ), E(cm)<1 MeV; measured reaction products, Eγ, Iγ; deduced S-factors, positive-parity resonance. Comparison with available data, SUSY assisted Big-bang Nucleosynthesis models.

doi: 10.1016/j.physletb.2013.07.044
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetS0083. Data from this article have been entered in the XUNDL database. For more information, click here.


2012DE06      Phys.Rev. C 85, 038801 (2012)

R.J.de Boer, P.J.LeBlanc, S.Falahat, G.Imbriani, J.Gorres, S.O'Brien, E.Uberseder, M.Wiescher

Elastic scattering of protons from 15N

NUCLEAR REACTIONS 15N(p, p), (p, α), E=0.6-1.8 MeV; measured particle spectra, σ(E, θ), yields. 16O; deduced resonances, levels, J, π, widths. R-matrix analysis. Comparison with previous studies. Relevance to 15N(p, γ)16O reaction cross sections at stellar energies.

doi: 10.1103/PhysRevC.85.038801
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC1907. Data from this article have been entered in the XUNDL database. For more information, click here.


2012DE08      Phys.Rev. C 85, 045804 (2012)

R.J.de Boer, A.Couture, R.Detwiler, J.Gorres, P.Tischhauser, E.Uberseder, C.Ugalde, E.Stech, M.Wiescher, R.E.Azuma

Measurement of elastic 12C + α scattering: Above the proton separation energy

NUCLEAR REACTIONS 12C(α, α), E=2.6-8.2 MeV; measured Eα, Iα, σ(E, θ). 12C(α, α'), (α, p), E=6.6-8.2 MeV; analyzed σ(E, θ) data. 16O; deduced resonances, levels, J, π, α and proton widths. R-matrix analysis. Relevance to CNO cycle.

doi: 10.1103/PhysRevC.85.045804
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC1921. Data from this article have been entered in the XUNDL database. For more information, click here.


2012IM02      Phys.Rev. C 85, 065810 (2012), Erratum Phys.Rev. C 86, 039902 (2012)

G.Imbriani, R.J.de Boer, A.Best, M.Couder, G.Gervino, J.Gorres, P.J.LeBlanc, H.Leiste, A.Lemut, E.Stech, F.Strieder, E.Uberseder, M.Wiescher

Measurement of γ rays from 15N(p, γ)16O cascade and 15N(p, α1γ)12C reactions

NUCLEAR REACTIONS 15N(p, γ)16O, 15N(p, αγ)12C, E=0.14-1.80 MeV; measured Eγ, Iγ, S factors, cross section. 12C, 16O; deduced levels, J, π, widths. R-matrix analysis. Comparison with previous studies.

doi: 10.1103/PhysRevC.85.065810
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC1936. Data from this article have been entered in the XUNDL database. For more information, click here.


2012PA08      Phys.Rev. C 85, 035808 (2012), Erratum Phys.Rev. C 88, 039902 (2013)

A.Palumbo, W.P.Tan, J.Gorres, A.Best, M.Couder, R.Crowter, R.J.de Boer, S.Falahat, P.J.LeBlanc, H.Y.Lee, S.O'Brien, E.Strandberg, M.Wiescher, J.P.Greene, Zs.Fulop, G.G.Kiss, E.Somorjai, N.Ozkan, G.Efe, R.T.Guray

Systematic study of the α-optical potential via elastic scattering near the Z=50 region for p-process nuclei

NUCLEAR REACTIONS 106Cd, 118Sn, 120,124,126,128,130Te(α, α), E=17-27 MeV; measured Eα, Iα, σ(E, θ). 106Cd, 112Sn(α, γ), E(cm)=7-12.5 MeV; 106Cd, 120Te(α, n), E(cm)=9.7-12.5 MeV; 118Sn(α, n), E=11-16.5 MeV; 106Cd(α, p), E(cm)=8.6-10.3 MeV; 112Sn(α, p), E(cm)=9.2-12.0 MeV; deduced σ and S factors relevant to p-process nuclei. Optical model analysis. HF statistical model calculations. Comparisons with other measurements.

doi: 10.1103/PhysRevC.85.035808
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC1739.


2010AZ01      Phys.Rev. C 81, 045805 (2010)

R.E.Azuma, E.Uberseder, E.C.Simpson, C.R.Brune, H.Costantini, R.J.de Boer, J.Gorres, M.Heil, P.J.LeBlanc, C.Ugalde, M.Wiescher

AZURE: An R-matrix code for nuclear astrophysics

NUCLEAR REACTIONS 12C(p, γ), (p, p), 14N(p, γ), E=0.2-2.5 MeV; 16O(p, γ), E=0.23-3.75 MeV; analyzed σ(θ), proton widths, γ widths, S factor and nuclear phase shift using R-matrix analysis. Description of AZURE code for R-matrix analysis of reactions relevant to nuclear astrophysics.

doi: 10.1103/PhysRevC.81.045805
Citations: PlumX Metrics


2010CO12      Phys.Rev. C 82, 035802 (2010)

H.Costantini, R.J.de Boer, R.E.Azuma, M.Couder, J.Gorres, J.W.Hammer, P.J.LeBlanc, H.Y.Lee, S.O'Brien, A.Palumbo, E.C.Simpson, E.Stech, W.Tan, E.Uberseder, M.Wiescher

16O(α, γ)20Ne S factor: Measurements and R-matrix analysis

NUCLEAR REACTIONS 16O(α, γ), E=2.5 MeV; measured Eγ, Iγ, γγ-coin, Eα, Iα. 20Ne; deduced levels, J, π, resonances, width, yields, branching ratios, S factors, reaction rates. R-matrix analysis.

doi: 10.1103/PhysRevC.82.035802
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC1819. Data from this article have been entered in the XUNDL database. For more information, click here.


2010DE29      Phys.Rev. C 82, 025802 (2010)

R.J.de Boer, M.Wiescher, J.Gorres, R.Longland, C.Iliadis, G.Rusev, A.P.Tonchev

Photoexcitation of astrophysically important states in 26Mg. II. Ground-state-transition partial widths

NUCLEAR REACTIONS 26Mg(γ, γ'), E=10.5-11.7 MeV; measured Eγ, Iγ; deduced levels, J, π, resonances, branching ratios, total widths, partial widths. GEANT4 Monte-Carlo simulation of γ-ray spectra. Relevance to predictions of neutron production for the s-process in nucleosynthesis.

doi: 10.1103/PhysRevC.82.025802
Citations: PlumX Metrics

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


2009LO06      Phys.Rev. C 80, 055803 (2009)

R.Longland, C.Iliadis, G.Rusev, A.P.Tonchev, R.J.de Boer, J.Gorres, M.Wiescher

Photoexcitation of astrophysically important states in 26Mg

NUCLEAR REACTIONS 26Mg(polarized γ, γ'), E=10.8, 11.0, 11.2, 11.4 MeV; measured Eγ, Iγ, and γγ(θ) at TUNL HIγS facility. 26Mg; deduced levels, J, π, and branching ratios. Comparison with Monte Carlo simulations. Implications for the reaction rates for 22Ne(α, γ)26Mg of astrophysical interest.

doi: 10.1103/PhysRevC.80.055803
Citations: PlumX Metrics

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


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