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Search: Author = F.C.Barker

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2009BA04      Phys.Rev. C 79, 017302 (2009)

F.C.Barker

Energies of 9B(1/2+) and 10C(0+2)

NUCLEAR STRUCTURE 9B, 10C; calculated excitation energies. Potential-model calculations.

doi: 10.1103/PhysRevC.79.017302
Citations: PlumX Metrics


2009DI06      Phys.Rev. C 80, 034316 (2009)

C.Aa.Diget, F.C.Barker, M.J.G.Borge, R.Boutami, P.Dendooven, T.Eronen, S.P.Fox, B.R.Fulton, H.O.U.Fynbo, J.Huikari, S.Hyldegaard, H.B.Jeppesen, A.Jokinen, B.Jonson, A.Kankainen, I.Moore, A.Nieminen, G.Nyman, H.Penttila, V.F.E.Pucknell, K.Riisager, S.Rinta-Antila, O.Tengblad, Y.Wang, K.Wilhelmsen, J.Aysto

Breakup channels for 12C triple-α continuum states

RADIOACTIVITY 12N(β+)[from 12C(p, n), E=28 MeV], 12B(β-)[from 11B(d, p), E=10 MeV]; measured Eα, Eγ, ααα-coin. 12C; deduced levels, J, π, triple-α continuum states and their decay modes. R-matrix analysis.

doi: 10.1103/PhysRevC.80.034316
Citations: PlumX Metrics


2009HY01      Phys.Lett. B 678, 459 (2009)

S.Hyldegaard, C.Forssen, C.Aa.Diget, M.Alcorta, F.C.Barker, B.Bastin, M.J.G.Borge, R.Boutami, S.Brandenburg, J.Buscher, P.Dendooven, P.Van Duppen, T.Eronen, S.Fox, B.R.Fulton, H.O.U.Fynbo, J.Huikari, M.Huyse, H.B.Jeppesen, A.Jokinen, B.Jonson, K.Jungmann, A.Kankainen, O.Kirsebom, M.Madurga, I.Moore, P.Navratil, T.Nilsson, G.Nyman, G.J.G.Onderwater, H.Penttila, K.Perajarvi, R.Raabe, K.Riisager, S.Rinta-Antila, A.Rogachevskiy, A.Saastamoinen, M.Sohani, O.Tengblad, E.Traykov, J.P.Vary, Y.Wang, K.Wilhelmsen, H.W.Wilschut, J.Aysto

Precise branching ratios to unbound 12C states from 12N and 12B β-decays

NUCLEAR REACTIONS 1H(12C, n), 2H(11B, p), 12C(p, n), 11B(d, p), E not given; measured Eγ, Iγ, Eα, Iα, γα-coin, αα-coin, decay spectra; deduced branching ratio, log ft, B(GT) to various 12C states. Comparison with no-core shell model calculations.

RADIOACTIVITY 12B(β-), 12N(β+); deduced branching ratio, log ft, B(GT) to various 12C states. Comparison with no-core shell model calculations.

doi: 10.1016/j.physletb.2009.06.064
Citations: PlumX Metrics

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


2008BA42      Phys.Rev. C 78, 044611 (2008)

F.C.Barker

15N(p, α0)12C S factor

NUCLEAR REACTIONS 15N(p, α); analyzed astrophysical S-factor; deduced S(0). R-matrix analysis.

doi: 10.1103/PhysRevC.78.044611
Citations: PlumX Metrics


2008BA43      Phys.Rev. C 78, 044612 (2008)

F.C.Barker

15N(p, γ0)16O S factor

NUCLEAR REACTIONS 15N(p, γ); analyzed astrophysical S-factors, deduced resonance energies, resonances widths. R-matrix fit.

doi: 10.1103/PhysRevC.78.044612
Citations: PlumX Metrics


2008CR02      J.Phys.(London) G35, 014004 (2008)

J.Cruz, H.Luis, M.Fonseca, Z.Fulop, G.Gyurky, F.Raiola, M.Aliotta, K.U.Kettner, A.P.Jesus, J.P.Ribeiro, F.C.Barker, C.Rolfs

Experimental study of proton-induced nuclear reactions in 6, 7Li

NUCLEAR REACTIONS 6Li(p, α), E=90-580 keV; 7Li(p, α), E=90-1740 keV; measured cross sections and angular distributions; deduced S-factor. comparison with previous experimental data.

doi: 10.1088/0954-3899/35/1/014004
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetO1590.


2007BA10      Phys.Rev. C 75, 027601 (2007)

F.C.Barker

Electron screening in the 3He(d, p)4He reaction

NUCLEAR REACTIONS 3He(d, p), E ≈ 5-500 keV; analyzed S-factor data; deduced electron screening potential.

doi: 10.1103/PhysRevC.75.027601
Citations: PlumX Metrics


2007BA54      Phys.Rev. C 76, 027602 (2007)

F.C.Barker

Width of 11B(1/2+, T = 3/2)

NUCLEAR REACTIONS 10Be(p, γ), E<2.1 MeV; analyzed cross sections. 11B deduced level widths.

doi: 10.1103/PhysRevC.76.027602
Citations: PlumX Metrics


2006BA15      Nucl.Phys. A768, 241 (2006)

F.C.Barker

Energy dependence of the 7Be(p, γ)8B S factor, and charge symmetry in the 7Li + n and 7Be + p systems

NUCLEAR REACTIONS 7Be(p, γ), 7Li(n, γ), E=0-1200 keV; calculated S-factors; deduced charge symmetry features. R-matrix analysis, comparison with cluster-model predictions and data.

doi: 10.1016/j.nuclphysa.2006.01.010
Citations: PlumX Metrics


2006BA47      Nucl.Phys. A776, 52 (2006)

F.C.Barker, H.O.U.Fynbo

β-decay of 9Li to 9Be(1/2+)

RADIOACTIVITY 9Li(β-); analyzed β-decay data; deduced inconsistencies with previous results.

doi: 10.1016/j.nuclphysa.2006.07.035
Citations: PlumX Metrics


2006CA05      Phys.Rev. C 73, 014319 (2006)

E.Casarejos, C.Angulo, P.J.Woods, F.C.Barker, P.Descouvemont, M.Aliotta, T.Davinson, P.Demaret, M.Gaelens, P.Leleux, Z.Liu, M.Loiselet, A.S.Murphy, A.Ninane, I.A.Roberts, G.Ryckewaert, J.S.Schweitzer, F.Vanderbist

Low-lying states in the unbound 11N nucleus

NUCLEAR REACTIONS 1H(10C, p), E=25.5, 32 MeV; measured recoil Ep, elastic σ(θ). 11N deduced resonance parameters. 12O deduced two-proton decay width.

doi: 10.1103/PhysRevC.73.014319
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetO1513.


2005BL15      Phys.Rev.Lett. 94, 232501 (2005); Erratum Phys.Rev.Lett. 94, 249901 (2005)

B.Blank, A.Bey, G.Canchel, C.Dossat, A.Fleury, J.Giovinazzo, I.Matea, N.Adimi, F.De Oliveira, I.Stefan, G.Georgiev, S.Grevy, J.C.Thomas, C.Borcea, D.Cortina, M.Caamano, M.Stanoiu, F.Aksouh, B.A.Brown, F.C.Barker, W.A.Richter

First Observation of 54Zn and its Decay by Two-Proton Emission

NUCLEAR REACTIONS Ni(58Ni, X), E=74.5 MeV/nucleon; measured fragment yields; deduced evidence for 54Zn.

RADIOACTIVITY 54Zn(2p) [from Ni(58Ni, X)]; measured Ep, T1/2, two-proton decay branching ratio. Comparison with model predictions.

doi: 10.1103/PhysRevLett.94.232501
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Data from this article have been entered in the XUNDL database. For more information, click here.


2005DI16      Nucl.Phys. A760, 3 (2005)

C.Aa.Diget, F.C.Barker, M.G.Borge, J.Cederkall, V.N.Fedosseev, L.M.Fraile, B.R.Fulton, H.O.U.Fynbo, H.B.Jeppesen, B.Jonson, U.Koster, M.Meister, T.Nilsson, G.Nyman, Y.Prezado, K.Riisager, S.Rinta-Antila, O.Tengblad, M.Turrion, K.Wilhelmsen, J.Aysto

Properties of the 12C 10 MeV state determined through β-decay

RADIOACTIVITY 12B(β-), (β-3α) [from Ta(p, X)]; measured β-delayed Eα, αα-coin. 12C deduced excited states, J, π. R-matrix analysis.

doi: 10.1016/j.nuclphysa.2005.05.159
Citations: PlumX Metrics


2004BA07      Phys.Rev. C 69, 024310 (2004)

F.C.Barker

T = 3/2 levels in A = 11 nuclei

NUCLEAR STRUCTURE 11B, 11C; calculated level energies, widths, spectroscopic factors. Many-channel R-matrix model, comparison with data.

doi: 10.1103/PhysRevC.69.024310
Citations: PlumX Metrics


2004BA67      Nucl.Phys. A741, 42 (2004)

F.C.Barker

Level widths in 9He and 10He

NUCLEAR STRUCTURE 9,10He; analyzed resonance widths, related features.

doi: 10.1016/j.nuclphysa.2004.06.001
Citations: PlumX Metrics


2003BA99      Phys.Rev. C 68, 054602 (2003)

F.C.Barker

R-matrix formulas for three-body decay widths

NUCLEAR STRUCTURE 6Be, 8C, 12O, 18Ne, 45Fe, 48Ni; calculated spectroscopic factors, two-proton decay widths. 5H; calculated spectroscopic factors, two-neutron decay widths. 9Be, 9B; calculated levels spectroscopic factors, widths. R-matrix formulas, comparison with data.

doi: 10.1103/PhysRevC.68.054602
Citations: PlumX Metrics


2003BR07      Phys.Rev. C 67, 041304 (2003)

B.A.Brown, F.C.Barker

Di-proton decay of 45Fe

RADIOACTIVITY 45Fe, 48Ni(2p); calculated two-proton decay T1/2. R-matrix formula, comparison with data.

doi: 10.1103/PhysRevC.67.041304
Citations: PlumX Metrics


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
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetE1822.


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
Citations: PlumX Metrics


2002AN06      Phys.Rev. C65, 034310 (2002)

D.Anthony, L.Buchmann, P.Bergbusch, J.M.D'Auria, M.Dombsky, U.Giesen, K.P.Jackson, J.D.King, J.Powell, F.C.Barker

β-Delayed Deuteron Emission from 6He

RADIOACTIVITY 6He(β-) [from C(p, X)]; measured Eβ, β-delayed deuteron spectra, dα-coin, T1/2; deduced branching ratio. Comparison with model predictions.

doi: 10.1103/PhysRevC.65.034310
Citations: PlumX Metrics


2002BA09      Nucl.Phys. A697, 915 (2002)

F.C.Barker

The 9Be(p, γ)10B Cross Section at Low Energies

NUCLEAR REACTIONS 9Be(p, γ), E=75-1800 keV; analyzed σ(E), Ay(θ); deduced R-matrix parameters.

doi: 10.1016/S0375-9474(01)01262-3
Citations: PlumX Metrics


2002BA77      Nucl.Phys. A707, 277 (2002)

F.C.Barker

Electron Screening in Reactions between Light Nuclei

NUCLEAR REACTIONS 2H(d, p), (3He, p), 3He(d, p), 6Li(d, p), (d, α), (p, α), 7Li, 11B(p, α), E=low; analyzed σ, related data; deduced electron screening potential.

doi: 10.1016/S0375-9474(02)00921-1
Citations: PlumX Metrics


2002BA90      Phys.Rev. C66, 047603 (2002); Erratum Phys.Rev. C67, 049902 (2003)

F.C.Barker

6Be and 8C level widths

NUCLEAR STRUCTURE 6Be, 8C; calculated two-proton decay widths. R-matrix approach, comparison with data.

doi: 10.1103/PhysRevC.66.047603
Citations: PlumX Metrics


2002BR22      Phys.Rev. C65, 051309 (2002)

B.A.Brown, F.C.Barker, D.J.Millener

Di-Proton Decay of the 6.15 MeV 1- State in 18Ne

NUCLEAR STRUCTURE 18Ne; calculated one- and two-proton decay widths, spectroscopic factors for 1- state. Sequential and direct two-proton decay considered. Comparison with data.

doi: 10.1103/PhysRevC.65.051309
Citations: PlumX Metrics


2001BA31      Phys.Rev. C63, 047303 (2001)

F.C.Barker

12O Ground-State Decay by 2He Emission

NUCLEAR STRUCTURE 12O; calculated ground-state partial width for 2He decay. R-matrix approach.

RADIOACTIVITY 12O(2p); calculated ground-state partial width for 2He decay. R-matrix approach.

doi: 10.1103/PhysRevC.63.047303
Citations: PlumX Metrics


2001BA47      Nucl.Phys. A688, 959 (2001)

F.C.Barker, Y.Kondo

The 9Be(p, α)6Li and 9Be(p, d)8Be Cross Sections at Low Energies

NUCLEAR REACTIONS 9Be(p, α), (p, d), E=16-700 keV; analyzed σ, σ(θ), astrophysical S-factors, analyzing powers; deduced R-matrix parameters.

doi: 10.1016/S0375-9474(00)00590-X
Citations: PlumX Metrics


2000BA21      Aust.J.Phys. 53, 247 (2000)

F.C.Barker

The Low-Energy 9Be(γ, n)8Be Cross Section

NUCLEAR REACTIONS 9Be(γ, n), E=1.6-2.2 MeV; analyzed σ; deduced parameters. One-level R-matrix formulae with channel contributions.


2000BA46      Nucl.Phys. A673, 526 (2000)

F.C.Barker, A.M.Mukhamedzhanov

A 2- Level of 8B and the 7Be(p, γ)8B S Factor

NUCLEAR REACTIONS 7Be(p, γ), E=0.0-5.0 MeV; calculated S factor. 8B deduced level width. R-matrix formulae. Comparisons with data.

doi: 10.1016/S0375-9474(00)00134-2
Citations: PlumX Metrics


2000BA89      Phys.Rev. C62, 044607 (2000)

F.C.Barker

R-Matrix Fits Involving Levels of 8Be

NUCLEAR REACTIONS 4He(α, p), (α, n), E=35-50 MeV; 7Li(p, α), E(cm)=0-900 keV; analyzed σ, σ(θ). 4He(α, α), E=32-36 MeV; analyzed phase shifts. 8Be levels deduced R-matrix parameters.

doi: 10.1103/PhysRevC.62.044607
Citations: PlumX Metrics


1999BA03      Phys.Rev. C59, 535 (1999)

F.C.Barker

Width of the 12O Ground State

NUCLEAR STRUCTURE 12O; calculated ground state width, reduced widths for proton sequential decay.

doi: 10.1103/PhysRevC.59.535
Citations: PlumX Metrics


1999BB07      Nucl.Phys. A660, 249 (1999)

F.C.Barker

E2 Contributions to the 7Be(p, γ)8B Cross Section

NUCLEAR REACTIONS 7Be(p, γ), E not given; calculated E2 contributions to σ; deduced resonant, nonresonant strengths. R-matrix formulae.

doi: 10.1016/S0375-9474(99)00389-9
Citations: PlumX Metrics


1998BA59      Nucl.Phys. A637, 576 (1998)

F.C.Barker

Comment on ' Proton Single-Particle Reduced Widths for Unbound States '

NUCLEAR REACTIONS 12C, 22Na, 31P, 40Ca(p, p), E < 1200 keV; calculated unbound states single particle reduced widths. Comparison with previous work.

doi: 10.1016/S0375-9474(98)00333-9
Citations: PlumX Metrics


1997BA04      Phys.Rev. C55, 535 (1997)

F.C.Barker

Low-energy 7Li(n, γ0)8Li and 7Li(p, γ0)8Be Cross Sections

NUCLEAR REACTIONS 7Li(n, γ), (p, γ), E=low; analyzed p-wave strength in σ; deduced projectile penetration factors dependence.

doi: 10.1103/PhysRevC.55.535
Citations: PlumX Metrics


1997BA72      Phys.Rev. C56, 2646 (1997)

F.C.Barker

(3/2)+ Levels of 5He and 5Li, and Shadow Poles

NUCLEAR REACTIONS 3H(d, n), E=0-250 keV; 4He(n, X), E=21-23 MeV; 3He(d, p), E=0-1000 keV; analyzed total σ. 5He level deduced phase shifts, R-matrix parameter description. Analog level in 5Li discussed.

doi: 10.1103/PhysRevC.56.2646
Citations: PlumX Metrics


1997BA93      Phys.Rev. C56, 3423 (1997)

F.C.Barker

Comment on ' Spectroscopic Factors for Bound s-Wave States Derived from Neutron Scattering Lengths '

doi: 10.1103/PhysRevC.56.3423
Citations: PlumX Metrics


1996BA13      Phys.Rev. C53, 1449 (1996)

F.C.Barker

Comment on ' Energies and Widths of Low-Lying Levels in 11Be and 11N '

NUCLEAR STRUCTURE 11Be; 11N; calculated levels, widths, Coulomb diplacement energies. More justifiable definitions.

doi: 10.1103/PhysRevC.53.1449
Citations: PlumX Metrics


1996BA22      Phys.Rev. C53, 2539 (1996)

F.C.Barker

Energy of the First Excited State of 9B

NUCLEAR STRUCTURE 9B; analyzed level energy estimates; deduced quoted precision justification related features.

doi: 10.1103/PhysRevC.53.2539
Citations: PlumX Metrics


1996BA66      Nucl.Phys. A609, 38 (1996)

F.C.Barker

The 8He Delayed Triton Spectrum and β-Decay to Unstable Levels

RADIOACTIVITY 8He(β-); analyzed β-decay delayed triton spectra. 8Li levels deduced parameters, B(GT), branching ratios, log ft. R-matrix approach.

doi: 10.1016/S0375-9474(96)00307-7
Citations: PlumX Metrics


1996BB26      Aust.J.Phys. 49, 1081 (1996)

F.C.Barker

8Be Level Properties from Low-Energy 7Li(p, γ0)8Be Cross Section

NUCLEAR REACTIONS 7Li(polarized p, γ), E ≤ 1500 keV; analyzed σ(θ), analyzing power; deduced agreement with shell-model calculations. R-matrix fits.

doi: 10.1071/PH961081
Citations: PlumX Metrics


1995BA36      Nucl.Phys. A588, 693 (1995)

F.C.Barker

The Low-Energy 7Be(p, γ)8B Cross Section from an R-Matrix Approach

NUCLEAR REACTIONS 7Li(n, γ), E ≤ 1 MeV; analyzed σ(E); deduced model parameters. 7Be(p, γ), E ≤ 2 MeV; analyzed astrophysical S-factor vs E. R-matrix approach.

doi: 10.1016/0375-9474(95)00021-R
Citations: PlumX Metrics


1995BB21      Aust.J.Phys. 48, 813 (1995)

F.C.Barker

p-Wave Strength in the Low-Energy 7Li(p, γ0)8Be

NUCLEAR REACTIONS 7Li(polarized p, γ), E ≈ 70 keV; analyzed σ(θ), analyzing power; deduced no evidence for large p-wave strength.

doi: 10.1071/PH950813
Citations: PlumX Metrics


1994AZ03      Phys.Rev. C50, 1194 (1994); Erratum Phys.Rev. C56, 1655 (1997)

R.E.Azuma, L.Buchmann, F.C.Barker, C.A.Barnes, J.M.D'Auria, M.Dombsky, U.Giesen, K.P.Jackson, J.D.King, R.G.Korteling, P.McNeely, J.Powell, G.Roy, J.Vincent, T.R.Wang, S.S.M.Wong, P.R.Wrean

Constraints on the Low-Energy E1 Cross Section of 12C(α, γ)16O from the β-Delayed α Spectrum of 16N

RADIOACTIVITY 16N(β-) [from on-line separation]; measured β-delayed α-spectrum, (α)(12C)-coin; deduced R-matrix, K-matrix level parameters relevant to 12C(α, γ) reaction. Thin Si surface barrier detector.

NUCLEAR REACTIONS, ICPND 12C(α, γ), E(cm) ≤ 3 MeV; calculated E1 part of astrophysical S-factor, σ(E); deduced R-matrix, K-matrix level parameters. Data of β--delayed α-spectrum of 16N-decay input.

doi: 10.1103/PhysRevC.50.1194
Citations: PlumX Metrics


1994BA11      Phys.Lett. 322B, 17 (1994)

F.C.Barker

Deuteron Emission Following 6He Beta Decay

RADIOACTIVITY 6He(β-); calculated deuteron spectrum following β-decay, branching ratio. One-level R-matrix approximation.

NUCLEAR REACTIONS 4He(d, d), E=7 MeV; calculated phase shifts vs E. One-level R-matrix.

doi: 10.1016/0370-2693(94)90484-7
Citations: PlumX Metrics


1994BA46      Nucl.Phys. A575, 361 (1994)

F.C.Barker

A Test of K-matrix Formulae

NUCLEAR REACTIONS 4He(α, α), E ≤ 17 MeV; calculated phase shifts vs E. 9Be(p, d), E=40 MeV; calculated deuteron spectra. 8Be deduced level parameter fits. R-matrix, K-matrix fits to data.

doi: 10.1016/0375-9474(94)90195-3
Citations: PlumX Metrics


1994BA60      Phys.Rev. C50, 2244 (1994)

F.C.Barker

Low-Energy 12C(α, γ)16O Cross Section from K-Matrix Fits

NUCLEAR REACTIONS 12C(α, γ), E=low; compiled, reviewed data analyses; deduced E1 contribution related features. K-matrix approach.

doi: 10.1103/PhysRevC.50.2244
Citations: PlumX Metrics


1994BA65      Nucl.Phys. A579, 62 (1994)

F.C.Barker

Calculated Values of the Nuclear-Mismatch Correction for Superallowed 0+ → 0+ Beta Decays

NUCLEAR STRUCTURE 10C, 14O, 26mAl, 30S, 34Cl, 38mK, 42Sc, 46V, 50Mn, 54Co; calculated superallowed 0+-0+ β-decay nuclear mismatch correction. R-matrix theory.

doi: 10.1016/0375-9474(94)90793-5
Citations: PlumX Metrics


1994BA66      Nucl.Phys. A579, 75 (1994)

F.C.Barker

Calculated Asymmetry in ft-Values for Mirror Gamow-Teller Decays

NUCLEAR STRUCTURE A=8-13; calculated Gamow-Teller decays ft-values asymmetry. R-matrix theory.

doi: 10.1016/0375-9474(94)90794-3
Citations: PlumX Metrics


1994CO12      Phys.Rev. C50, 1695 (1994)

R.Coszach, Th.Delbar, W.Galster, P.Leleux, I.Licot, E.Lienard, P.Lipnik, C.Michotte, A.Ninane, J.Vervier, C.R.Bain, T.Davinson, R.D.Page, A.C.Shotter, P.J.Woods, D.Baye, F.Binon, P.Descouvemont, P.Duhamel, J.Vanhorenbeeck, M.Vincke, P.Decrock, M.Huyse, P.Van Duppen, G.Vancraeynest, F.C.Barker

Resonant Scattering of Isobaric 19Ne and 19F Beams on an H Target

NUCLEAR REACTIONS 1H(19Ne, 19Ne), (19F, 19F), E=0.5-0.9 MeV; measured σ(θ) vs E. 20Na deduced levels J, π.

doi: 10.1103/PhysRevC.50.1695
Citations: PlumX Metrics


1992BA10      Nucl.Phys. A537, 134 (1992)

F.C.Barker

On the Nuclear-Mismatch Correction for Superallowed 0+ → 0+ Beta Decay

RADIOACTIVITY 14O; calculated 0+ → 0+ superallowed β-decay mismatch correction. R-matrix approach.

doi: 10.1016/0375-9474(92)90160-L
Citations: PlumX Metrics


1992BA11      Nucl.Phys. A537, 147 (1992)

F.C.Barker

On the Asymmetry in ft Values for Mirror Gamow-Teller Decays

RADIOACTIVITY 12N, 12B; calculated Gamow-Teller β-decay ft-value asymmetry. R-matrix approach.

doi: 10.1016/0375-9474(92)90161-C
Citations: PlumX Metrics


1992BA22      Nucl.Phys. A540, 501 (1992)

F.C.Barker, B.A.Brown, W.Jaus, G.Rasche

Determination of (V(ud)) from Fermi Decays and the Unitarity of the KM-Mixing Matrix

RADIOACTIVITY 10C, 14O, 18Ne, 22Mg, 26mAl, 34Cl, 38mK, 42Sc, 46V, 50Mn, 54Co(β+); calculated radiative corretions to ft values. Realistic wave functions, quark model.

doi: 10.1016/0375-9474(92)90171-F
Citations: PlumX Metrics


1991RA09      Phys.Rev. C44, R5 (1991)

G.Rasche, D.Robustelli, F.C.Barker

Radiative Corrections to 10C Superallowed Fermi β Decay

RADIOACTIVITY 10C; calculated radiative corrections to β-decay observables; deduced quark mixing matrix element.

doi: 10.1103/PhysRevC.44.R5
Citations: PlumX Metrics


1989BA31      Aust.J.Phys. 42, 25 (1989)

F.C.Barker

Delayed Alpha Spectra from the Beta Decay of 8Li and 8B

NUCLEAR REACTIONS 4He(α, α), E ≈ 1-17 MeV; calculated phase shifts. 8Be deduced possible broad 2+ intruder state. Many-level R-matrix fit, other input.

RADIOACTIVITY 8Be(α) [from 8Li(β--decay), 8B(β+-decay)]; calculated α-spectra. 8Be deduced possible broad 2+ intruder state. Many-level R-matrix fit, other input.

doi: 10.1071/PH890025
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1989BA60      Aust.J.Phys. 42, 233 (1989)

F.C.Barker, C.L.Woods

Investigation of E1 Strength in Coulomb Excitation of Light Nuclei

NUCLEAR STRUCTURE 6,7Li, 10,11B, 12C, 17O; calculated E1 strength contribution to Coulomb excitation. Shell model.


1989BA80      Aust.J.Phys. 42, 597 (1989)

F.C.Barker, Y.Kondo, R.H.Spear

Static and Dynamic Moments of the 7Li Nucleus

NUCLEAR REACTIONS 58Ni(polarized 7Li, 7Li), (polarized 7Li, 7Li'), E=8-10 MeV; 120Sn(polarized 7Li, 7Li), (polarized 7Li, 7Li'), E=11-15.3 MeV; analyzed σ(θ), analyzing power data following Coulomb excitation. 7Li deduced B(E2), quadrupole, other moments.

doi: 10.1071/PH890597
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1989VE07      Nucl.Phys. A500, 212 (1989)

W.J.Vermeer, R.H.Spear, F.C.Barker

The Value of B(E2;3/2- → 1/2-) for 7Li

NUCLEAR STRUCTURE 7Li; analyzed Coulomb excitation reaction data; deduced transition B(E2).

doi: 10.1016/0375-9474(89)90138-3
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1988BA29      Phys.Rev. C37, 2920 (1988)

F.C.Barker

Comment on ' Radiative Capture Reaction 7Be(p, γ)8B at Low Energies '

NUCLEAR REACTIONS, ICPND 7Be(p, γ), E ≈ 2 MeV; calculated σ(E). Direct, resonant capture.

doi: 10.1103/PhysRevC.37.2920
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1988BA67      Nucl.Phys. A487, 269 (1988)

F.C.Barker, E.K.Warburton

The Beta-Decay of 8He

RADIOACTIVITY 8He(β-); calculated T1/2, branching ratio, delayed n, t spectra; deduced Gamow-Teller matrix elements. R-matrix, shell model methods.

doi: 10.1016/0375-9474(88)90613-6
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1988BA75      Aust.J.Phys. 41, 743 (1988)

F.C.Barker

Consistent Description of Unbound States Observed in Scattering and Reactions

NUCLEAR STRUCTURE 8Be; analyzed level structure, α-decay features. 8Be deduced level parameters.

NUCLEAR REACTIONS 4He(7Li, 6Li), (7Li, 6He), E not given; analyzed data. 5He, 5Li deduced level sequence.

doi: 10.1071/PH880743
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1988WO10      Aust.J.Phys. 41, 525 (1988)

C.L.Woods, F.C.Barker, W.N.Catford, L.K.Fifield, N.A.Orr

Experimental Investigation and R-Matrix Analysis of Low-Lying Levels in 5He and 5Li

NUCLEAR REACTIONS 4He(7Li, 6Li), (7Li, 6He), E=50 MeV; 6Li(12C, 13N), (13C, 14C), E=90 MeV; measured σ(θ). 5He, 5Li levels deduced reduced widths, spectroscopic factors. R-matrix analysis.

doi: 10.1071/PH880525
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1987BA53      Aust.J.Phys. 40, 25 (1987)

F.C.Barker

The 12C(α, γ)16O Cross Section at Stellar Energies

NUCLEAR REACTIONS, ICPND 12C(α, γ), E(cm) ≈ 1.5-3 MeV; calculated σ(E); deduced dipole contribution at stellar energies.

doi: 10.1071/PH870025
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1987BA54      Aust.J.Phys. 40, 307 (1987)

F.C.Barker

The First Excited State of 9B

NUCLEAR STRUCTURE 9B; calculated Coulomb displacement energy; deduced level energy. Analog 9Be level energy input.


1986BA38      Astrophys.J. 307, 847 (1986)

F.C.Barker, R.H.Spear

A Comment on the 7Be(p, γ)8B Cross Section and the Solar Neutrino Problem

NUCLEAR REACTIONS, ICPND 7Li(d, p), E=0.77 MeV; analyzed σ. 7Be(p, γ), E=0.1-4 MeV; analyzed σ, ratio to 7Li(d, p), S-factor vs E data; deduced inaccuracies, consequences to solar neutrino problem.

doi: 10.1086/164471
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1985BA68      Aust.J.Phys. 38, 563 (1985)

F.C.Barker, C.L.Woods

States of 5He and 5Li

NUCLEAR STRUCTURE 5He, 5Li; calculated levels, spectroscopic factors, Γ. Shell model.

doi: 10.1071/PH850563
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1985BA75      Aust.J.Phys. 38, 657 (1985)

F.C.Barker

Calculation of the 13N(p, γ)14O Cross Section at Low Energies

NUCLEAR STRUCTURE 14O; calculated levels, Γ, Γγ0. Shell model.

NUCLEAR REACTIONS 13N(p, γ), E ≈ 0-0.8 MeV; calculated astrophysical factor S(E). R-matrix approach, 14C, 14N, 14O data fit.

doi: 10.1071/PH850657
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1984BA24      Aust.J.Phys. 37, 17 (1984)

F.C.Barker

Low-Lying Negative-Parity Levels of 17N and 18N

NUCLEAR STRUCTURE 17,18N; calculated levels, J, π assignments, energy separations, splittings. Weak coupling model, effective shell model interactions.

doi: 10.1071/PH840017
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1984BA49      Aust.J.Phys. 37, 267 (1984)

F.C.Barker

E1 Decay of the First Excited State of 9Be

NUCLEAR STRUCTURE 9Be; calculated B(E1). R-matrix, shell model.

doi: 10.1071/PH840267
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1984BA73      Aust.J.Phys. 37, 583 (1984)

F.C.Barker

Ratio of the 4He(γ, p)3H and 4He(γ, n)3He Cross Sections

NUCLEAR REACTIONS 4He(γ, p), (γ, n), E=20-50 MeV; calculated σ(E), ratio; deduced experiment, theory discrepancy reason in GDR region. R-matrix methods.

doi: 10.1071/PH840583
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1984WO09      Nucl.Phys. A427, 73 (1984)

C.L.Woods, F.C.Barker

Narrow Highly Excited States of 9Be

NUCLEAR REACTIONS 9Be(e, e'), E not given; calculated transverse form factors. 9Be levels deduced B(λ), Γγ, Γ, spectroscopic factors. Shell model, special p-shell interactions.

doi: 10.1016/0375-9474(84)90139-8
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1983BA45      Phys.Rev. C28, 1407 (1983)

F.C.Barker

7Be(p, γ)8B Cross Section at Low Energy

NUCLEAR REACTIONS, ICPND 7Be(p, γ), E < 100 keV; analyzed earlier S-factor logarithmic derivative estimates of capture σ; deduced nuclear phase shift dependent correction.

doi: 10.1103/PhysRevC.28.1407
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1983BA52      Can.J.Phys. 61, 1371 (1983)

F.C.Barker

The First Excited State of 9Be

NUCLEAR REACTIONS 9Be(γ, n), E ≈ 1.7-2.15 MeV; calculated σ(E). 9Be deduced resonance width. R-matrix.

doi: 10.1139/p83-175
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1983BA62      Aust.J.Phys. 36, 649 (1983)

F.C.Barker

Isospin Mixing in 4- States of 12C

NUCLEAR REACTIONS 12C(π+, π+'), (π-, π-'), E=180 MeV; calculated σ(θ) vs excitation energy. 11B(3He, d), E(cm) ≈ 18.8-20 MeV; calcuated σ(Ed) vs E. 12C levels deduced isospin mixing effects.

doi: 10.1071/PH830649
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1982BA52      Aust.J.Phys. 35, 291 (1982)

F.C.Barker

GDR Contribution to Coulomb Excitation. I. 1p Shell Nuclei

NUCLEAR STRUCTURE 7,6Li, 10B, 12C; calculated virtual GDR contribution to Coulomb excitation. Shell model.

doi: 10.1071/PH820291
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1982BA53      Aust.J.Phys. 35, 301 (1982)

F.C.Barker

GDR Contribution to Coulomb Excitation. II. 17O

NUCLEAR STRUCTURE 17O; calculated Coulomb excitation probability. Shell model, virtual GDR excitation.

doi: 10.1071/PH820301
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1982BA62      Aust.J.Phys. 35, 377 (1982)

F.C.Barker

GDR Contribution to Coulomb Exitation. III. 18O

NUCLEAR STRUCTURE 18O; analyzed B(E2) data; deduced GDR role in Coulomb excitation.

doi: 10.1071/PH820377
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1981BA12      J.Phys.(London) G7, 657 (1981)

F.C.Barker, R.Smith, I.Morrison, K.Amos

4- States of 16O in the Region of 19 MeV Excitation

NUCLEAR REACTIONS 16O(p, p'), E=135 MeV; calculated σ(θ). DWBA, isospin mixing model, pion scattering, nucleon pickup data input.

doi: 10.1088/0305-4616/7/5/010
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1981BA36      J.Phys.(London) G7, 1239 (1981)

F.C.Barker, N.Ferdous

A Proposed Test of Time Reversal Invariance in Nuclear Elastic Scattering

NUCLEAR REACTIONS 7Li(p, p), (polarized p, p), E=0.75-1.5, 1.75-2.25 MeV; calculated σ(θ), analyzing power, polarization, depolarization parameter vs θ; deduced possible time reversal invariance test. R-matrix, one level, two channel approximation.

doi: 10.1088/0305-4616/7/9/015
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1981BA64      Aust.J.Phys. 34, 7 (1981)

F.C.Barker

Low-Lying Levels of 10B

NUCLEAR STRUCTURE 10B; calculated levels, B(λ), quadrupole moment, μ, log ft. Shell model, modified Cohen-Kurath interaction.

doi: 10.1071/PH810007
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1980BA34      Aust.J.Phys. 33, 159 (1980)

F.C.Barker

Neutron and Proton Capture by 6Li

NUCLEAR REACTIONS 6Li(γ, n), E=7-8.5 MeV; 6Li(p, γ), E=200-1200 keV; calculated σ(E). Direct-capture potential model.

doi: 10.1071/PH800159a
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1980BA35      Aust.J.Phys. 33, 177 (1980)

F.C.Barker

The 7Be(p, γ)8B Cross Section at Low Energies

NUCLEAR REACTIONS 7Be(p, γ), E=175-4000 keV; calculated nonresonant σ(E); deduced spectroscopic factors. Direct-capture potential model.

doi: 10.1071/PH800177a
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1979SW02      Nucl.Phys. A331, 50 (1979)

Z.E.Switkowski, J.C.P.Heggie, D.L.Kennedy, D.G.Sargood, F.C.Barker, R.H.Spear

Cross Section of the Reaction 6Li(p, γ)7Be

NUCLEAR REACTIONS 6Li(p, γ), E=200-1200 keV; measured σ(E). Enriched target.

doi: 10.1016/0375-9474(79)90300-2
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetF0032.


1978BA31      Aust.J.Phys. 31, 27 (1978)

F.C.Barker

Isospin Mixing in Light Nuclei

NUCLEAR STRUCTURE 8Be, 12C, 16O; calculated isospin mixing matrix elements.

doi: 10.1071/PH780027
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1978BA66      Aust.J.Phys. 31, 239 (1978)

F.C.Barker, N.Ferdous

3+ States of 8Be

NUCLEAR REACTIONS 7Li(p, n), (p, γ), E=1.6-2.4 MeV; 10B(d, α), 9Be(d, t), E not given; calculated level parameters, σ for 3+ doublet in 8Be. Two-level R-matrix, two-state isospin mixing model.

doi: 10.1071/PH780239
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1977BA11      J.Phys.(London) G3, L23 (1977)

F.C.Barker, G.T.Hickey

Ground-State Configurations of 10Li and 11Li

RADIOACTIVITY 11Li; analyzed, compared decay properties; deduced configuration admixing. 10Li ground state deduced non-normal parity.

doi: 10.1088/0305-4616/3/2/002
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1977BA62      Aust.J.Phys. 30, 113(1977)

F.C.Barker

2- States of 8Be

NUCLEAR STRUCTURE 8Be; calculated isospin mixing.

NUCLEAR REACTIONS 7Li(p, p'), (p, n), (p, γ), (3He, d), 10B(d, α); calculated σ.

doi: 10.1071/PH770113
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1977BR32      Nucl.Phys. A288, 334 (1977)

K.H.Bray, A.D.Frawley, T.R.Ophel, F.C.Barker

Levels of 16O Near 13 MeV Excitation from 15N + p Reactions

NUCLEAR REACTIONS 15N(p, α0), 15N(p, αγ), E=0.9-1.25 MeV; measured σ(Ep, θ), Doppler profiles. 16O deduced levels, J, π, Γ. Enriched target.

doi: 10.1016/0375-9474(77)90139-7
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetD0710.


1976BA24      J.Phys.(London) G2, L45 (1976)

F.C.Barker

T = 2 States of the A = 12 Nuclei

NUCLEAR STRUCTURE 12C, 12B; calculated T=2 state properties: T1/2, J, π, configurations.

doi: 10.1088/0305-4616/2/4/001
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1976BA40      Phys.Lett. 64B, 251 (1976)

F.C.Barker

Isospin Mixing in the 7.12 MeV 1- State of 16O

NUCLEAR STRUCTURE 16O; calculated Coulomb effects in E1 transition.

doi: 10.1016/0370-2693(76)90192-1
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1976BA67      Aust.J.Phys. 29, 245 (1976)

F.C.Barker, G.M.Crawley, P.S.Miller, W.F.Steele

The Ghost Anomaly in the 9Be(p, d)8Be Reaction

NUCLEAR REACTIONS 9Be(p, d), E=39.91 MeV; measured σ(θ); deduced anomaly.

doi: 10.1071/PH760245
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1972BA41      Astrophys.J. 173, 477 (1972)

F.C.Barker

The 7Li(p, α)4He Cross-Section at Low Energies

NUCLEAR REACTIONS 7Li(p, α), E < 600 keV; analyzed higher-energy data; extrapolated σ to stellar energies.

doi: 10.1086/151439
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetA1459.


1972BB10      Phys.Lett. 42B, 313 (1972)

F.C.Barker

Solar Neutrinos and a Proposed Level in 6Be

NUCLEAR STRUCTURE 6Be; analyzed structure; deduced no narrow 0+ level.

doi: 10.1016/0370-2693(72)90495-9
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1972BB26      Aust.J.Phys. 25, 341 (1972)

F.C.Barker

The Boundary Condition Parameter in R-Matrix Theory

NUCLEAR STRUCTURE 7Li; calculated level parameters.

doi: 10.1071/PH720341
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1971BA27      Aust.J.Phys. 24, 1 (1971)

F.C.Barker, K.W.Carter, D.C.Kean, C.J.Piluso, R.H.Spear

A Study of the Energy Levels of 27Si

NUCLEAR REACTIONS 28Si(3He, α), E=11 MeV; measured σ(Eα). 27Si deduced levels.


1971BA99      Aust.J.Phys. 24, 777 (1971)

F.C.Barker

Calculation of the 12C + α Capture Cross Section at Stellar Energies

NUCLEAR REACTIONS 12C(α, γ), E < 4.2 MeV; calculated σ(E). R-matrix formalism.


1971KU10      Nucl.Phys. A167, 434 (1971)

N.Kumar, F.C.Barker

States of 8Be from Analysis of 7Li(p, α)4He Reaction Data

NUCLEAR REACTIONS 7Li(p, α), E < 7 MeV; measured nothing; analyzed σ(E;θ), analyzing power(E). 8Be deduced levels, J, π.

doi: 10.1016/0375-9474(71)90087-X
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1971PI06      Aust.J.Phys. 24, 459 (1971)

C.J.Piluso, R.H.Spear, K.W.Carter, D.C.Kean, F.C.Barker

Magnetic Analysis of the Reactions 7Li(3He, d)8Be and 7Li(3He, t)7Be

NUCLEAR REACTIONS 7Li(3He, d), (3He, t), E=15 MeV; measured σ(Ed, θ), σ(Et, θ). 7,8Be deduced levels, level-width.


1969BA36      Phys.Letters 30B, 103 (1969)

F.C.Barker, N.Kumar

Search for the Lowest T = 2 State of 8Be: Theory

NUCLEAR STRUCTURE 8Be; calculated partial level-width for T= 2 state in 6Li(d, X).

doi: 10.1016/0370-2693(69)90409-2
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1969BA43      Australian J.Phys. 22, 293 (1969)

F.C.Barker

2+ States of 8Be

RADIOACTIVITY 8Li; calculated Eα.

NUCLEAR REACTIONS 9Be(p, d), E = 8 MeV; calculated σ(Ed).R-matrix theory.

doi: 10.1071/PH690293
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1966BA01      Phys.Letters 21, 318 (1966)

F.C.Barker, J.R.Patterson, J.M.Poate, E.W.Titterton

The 26 MeV State of 13N

NUCLEAR STRUCTURE 13N, 10B; measured not abstracted; deduced nuclear properties.

doi: 10.1016/0031-9163(66)90833-X
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1966BA26      Nucl.Phys. 83, 418 (1966)

F.C.Barker

Intermediate Coupling Shell-Model Calculations for Light Nuclei

doi: 10.1016/0029-5582(66)90582-7
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