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NSR database version of May 24, 2024.

Search: Author = J.R.MacDonald

Found 24 matches.

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1979BE06      Z.Phys. A289, 333 (1979)

H.-H.Behncke, P.Armbruster, F.Folkmann, S.Hagmann, J.R.Macdonald, P.H.Mokler

Measurements of K-Shell Ionization with 132Xe and 208Pb Projectiles in the Energy Range of 1.4-5.9 MeV/u

NUCLEAR REACTIONS C, U(132Xe, X), E=3.6, 4.7, 5.9 MeV/nucleon; C, U(208Pb, X), E=1.4, 3.6, 4.7, 5.9 MeV/nucleon; measured projectile, target K-shell ionization σ. Molecular model for HI-atom collisions.

doi: 10.1007/BF01409384
Citations: PlumX Metrics

1977UL01      Phys.Rev. C15, 186 (1977)

M.Ulrickson, N.Benczer-Koller, J.R.MacDonald, J.W.Tape

Electric Monopole Transitions in 40Ca

NUCLEAR REACTIONS 40Ca(p, p'), E=7-10 MeV; measured p' pair-coin. 40Ca deduced E0 branching, matrix elements. Natural targets.

doi: 10.1103/PhysRevC.15.186
Citations: PlumX Metrics

1976UL01      Phys.Rev. C13, 536 (1976)

M.Ulrickson, W.Hartwig, N.Benczer-Koller, J.R.MacDonald, J.W.Tape

The E0-Pair Decay of the 0+ Second Excited States in 42Ca and 44Ca

NUCLEAR REACTIONS 42,44Ca(p, p'), E=4.40 MeV; measured pair spectra, p'pair-coin. 42,44Ca levels deduced E0 branching, E0 strength.

doi: 10.1103/PhysRevC.13.536
Citations: PlumX Metrics

1975CZ01      Phys.Rev. A11, 1108 (1975)

S.J.Czuchlewski, J.R.Macdonald, L.D.Ellsworth

Argon and Krypton X-Ray Production by Fluorine Projectiles of Different Charge States

ATOMIC PHYSICS Ar(19F, 19F), E=36, 48 MeV; measured K X-ray yields for Ar.

doi: 10.1103/PhysRevA.11.1108
Citations: PlumX Metrics

1975TA16      Phys.Rev. C12, 2125 (1975)

J.W.Tape, M.Ulrickson, N.Benczer-Koller, J.R.MacDonald

Further Evidence for the Recently Discovered Doublet in 48Ca

NUCLEAR REACTIONS 48Ca(p, p'γ); measured Eγ; reanalyzed previous data. 48Ca deduced levels.

doi: 10.1103/PhysRevC.12.2125
Citations: PlumX Metrics

1974HE13      Phys.Rev. C10, 919 (1974)

R.Hensler, J.W.Tape, J.Matthews, N.Benczer-Koller, J.R.MacDonald

Measurement of the Magnetic Moment of the 4.49-MeV (5-) State of 40Ca

NUCLEAR REACTIONS 40Ca(p, p'γ), E=7.68, 9.27 MeV; measured p'γ(θ, H, t); deduced hyperfine field for CaFe. 40Ca levels deduced μ.

doi: 10.1103/PhysRevC.10.919
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1973BE24      Phys.Rev. C8, 216 (1973)

E.Beardsworth, R.Hensler, J.W.Tape, N.Benczer-Koller, W.Darcey, J.R.MacDonald

Double Gamma Decay in 40Ca

NUCLEAR REACTIONS 40Ca(p, p'γ), E=5.08 MeV; measured pγγ(θ), pγγ-coin. 40Ca level deduced probability of double γ-decay.

doi: 10.1103/PhysRevC.8.216
Citations: PlumX Metrics

1972TA17      Phys.Lett. 40B, 635 (1972)

J.W.Tape, N.Benczer-Koller, R.Hensler, J.R.MacDonald

The Lifetime of the 3.74 MeV (3-) State of 40Ca

NUCLEAR REACTIONS 40Ca(p, p'γ), E=8.7 MeV; measured p'γ-delay. 40Ca level deduced T1/2, B(E3).

doi: 10.1016/0370-2693(72)90615-6
Citations: PlumX Metrics

1972TA23      Nucl.Phys. A195, 57 (1972)

J.W.Tape, R.Hensler, N.Benczer-Koller, J.R.MacDonald

The 4.61 and 5.15 MeV Levels of 48Ca

NUCLEAR REACTIONS 48Ca(p, p'γ), E=8.1, 10 MeV; measured DSA, p'γ(θ), p'γ-delay, Eγ, γγ-coin. 48Ca deduced levels, J, π, T1/2.

doi: 10.1016/0375-9474(72)90720-8
Citations: PlumX Metrics

1971HE21      Phys.Rev.Lett. 27, 1587 (1971)

R.Hensler, J.W.Tape, N.Benczer-Koller, J.R.MacDonald

Mean Lifetime and Magnetic Moment of the 2.95-MeV (6+) State of 54Fe

NUCLEAR REACTIONS 54Fe(p, p'γ), E=8.187 MeV; measured p'γ-delay, p'γ(θ, H, t). 54Fe level deduced T1/2, g, B(E2).

doi: 10.1103/PhysRevLett.27.1587
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1971MA03      Phys.Rev. C3, 219 (1971)

J.R.MacDonald, D.H.Wilkinson, D.E.Alburger

Gamma Decay of the 3.90-MeV (2+) Level in Ca40

NUCLEAR REACTIONS 40Ca(p, p'γ), E=7.32 MeV; 39K(p, γ), E=1.344 MeV; measured Doppler shift attenuation, γγγ-, p'γγ-triple coin. 40Ca levels deduced T1/2, γ-branching, B(E2).

doi: 10.1103/PhysRevC.3.219
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1970BE39      Phys.Rev. C2, 1037 (1970)

N.Benczer-Koller, G.G.Seaman, M.C.Bertin, J.W.Tape, J.R.MacDonald

Properties of the Low-Lying States of 48Ca

NUCLEAR REACTIONS 48Ca(p, p'γ), E=7-9 MeV; measured σ(E;Ep', Eγ, θ(p'γ)), Doppler shift attenuation, p'γ-delay. 48Ca deduced levels, J, π, T1/2, γ-branching.

doi: 10.1103/PhysRevC.2.1037
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1969BE48      Phys.Rev. 183, 964 (1969)

M.C.Bertin, N.Benczer-Koller, G.G.Seaman, J.R.MacDonald

Electromagnetic Transition Rates in 58Ni

NUCLEAR REACTIONS 58,60,62Ni(p, p'γ), E = 7-9 MeV; measured Doppler shift attenuation. 58,60,62Ni deduced levels, T1/2, matrix elements. Ge(Li) detector.

doi: 10.1103/PhysRev.183.964
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1969MA01      Priv.Comm. (January 1969)


NUCLEAR STRUCTURE 58Ni; measured not abstracted; deduced nuclear properties.

1969MA19      Phys.Rev.Letters 23, 594 (1969)

J.R.MacDonald, N.Benczer-Koller, J.Tape, L.Guthman, P.Goode

Measurement of the Mean Life of the 4.49-MeV (5-) State of 40Ca. Effects of Deformed Components on the Lifetimes of the Odd-Parity States

NUCLEAR REACTIONS 40Ca(p, p'γ), E=7.73 MeV; measured p'γ-delay. 40Ca level deduced T1/2, B(E2).

doi: 10.1103/PhysRevLett.23.594
Citations: PlumX Metrics

1969MU14      Proc.Roy.Soc.(London) 311A, 111 (1969)

D.E.Murnick, J.R.MacDonald, R.R.Borchers, G.Heestand, B.Herskind

Implantation Perturbed Angular Correlation Experiments in Iron after Inelastic Proton Scattering

NUCLEAR REACTIONS 54,56Fe(p, p'), E=6.51, 6.78 MeV; 56Fe(16O, 16O'γ), E=33 MeV; measured p'γ(θ), (16O')(γ)(θ); deduced hyperfine fields.

doi: 10.1098/rspa.1969.0103
Citations: PlumX Metrics

1969SE10      Phys.Rev. 188, 1706 (1969)

G.G.Seaman, N.Benczer-Koller, M.C.Bertin, J.R.MacDonald

Lifetimes of Excited States in 56Fe

NUCLEAR REACTIONS 56Fe(p, p'γ), E=7.8-8.3 MeV; measured σ(E;Ep', Eγ), Doppler shift attenuation. 56Fe deduced levels, T1/2, J, π, γ-multipolarity.

doi: 10.1103/PhysRev.188.1706
Citations: PlumX Metrics

1968BE17      Phys.Letters 26B, 623 (1968)

M.C.Bertin, N.Benczer-Koller, G.G.Seaman, J.R.MacDonald

Lifetimes of 2+ States in 58Ni

NUCLEAR STRUCTURE 58Ni; measured not abstracted; deduced nuclear properties.

doi: 10.1016/0370-2693(68)90435-8
Citations: PlumX Metrics

1968MA05      Nucl.Phys. A108, 6(1968)

J.R.MacDonald, D.F.H.Start, R.Anderson, A.G.Robertson, M.A.Grace

Lifetimes in 40Ca from Doppler Shift Attenuation Measurements Using a Ge(Li) Detector

NUCLEAR REACTIONS 28Si, 40Ca, 58Ni(p, p'γ), E = 8-10 MeV; measured σ(E; Eγ, θ(pγ), θ(γγ)). Doppler-shift attenuation. 40Ca deduced levels, branching ratios, J, π, T1/2. 28Si, 58Ni deduced T1/2 (level). Enriched 58Ni target, Ge(Li) detector.

doi: 10.1016/0375-9474(68)90142-5
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1968MA18      Nucl.Phys. A113, 129(1968)

J.R.MacDonald, D.F.H.Start, D.H.Wilkinson

Gamma-Ray Transitions from the 2.15 MeV State of 10B

NUCLEAR REACTIONS 10B(p, p'γ), Ep=7.8 MeV; measured σ(Eγ, θ), p'γ(θ). Deduced γ multipolarity. Enriched target.

doi: 10.1016/0375-9474(68)90888-9
Citations: PlumX Metrics

1967MA03      Nucl.Phys. A92, 593 (1967)

J.R.MacDonald, M.A.Grace

The Energy Levels of 56Fe

RADIOACTIVITY 56Mn, 56Co; measured Eγ, Iγ. 56Fe deduced levels, J, π, log ft. 56Fe(p, p'γ), E = 7 MeV; measured Eγ, Iγ, γγ-coin, γγ(θ). 56Fe deduced levels, J, π. Enriched target.

doi: 10.1016/0375-9474(67)90635-5
Citations: PlumX Metrics

1965RE08      Nucl.Phys. 66, 465(1965)

M.A.Reimann, J.R.Macdonald, J.B.Warren

Charged Photoparticles from Argon

NUCLEAR REACTIONS 40Ar(γ, p)(γ, α), E = 17.71 MeV; 40Ar(γ, α), E = 9.17 MeV; measured σ(Ep), Q. 36S, 39Cl deduced levels.

doi: 10.1016/0029-5582(65)90194-X
Citations: PlumX Metrics

1963WA02      Bull.Am.Phys.Soc. 8, No.2, 124, U1 (1963)

J.B.Warren, K.L.Erdman, L.P.Robertson, D.Axen, J.R.MacDonald

Photodisintegration of He3

NUCLEAR STRUCTURE 3He; measured not abstracted; deduced nuclear properties.

1963WA19      Phys.Rev. 132, 1691 (1963)

J.B.Warren, K.L.Erdman, L.P.Robertson, D.A.Axen, J.R.Macdonald

Photodisintegration of He3 Near the Threshold

NUCLEAR STRUCTURE 3He; measured not abstracted; deduced nuclear properties.

doi: 10.1103/PhysRev.132.1691
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