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Search: Author = J.J.Simpson

Found 44 matches.

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2004BL02      Nucl.Instrum.Methods Phys.Res. A517, 139 (2004)

I.Blevis, J.Boger, E.Bonvin, B.T.Cleveland, X.Dai, F.Dalnoki-Veress, G.Doucas, J.Farine, H.Fergani, D.Grant, R.L.Hahn, A.S.Hamer, C.K.Hargrove, H.Heron, P.Jagam, N.A.Jelley, C.Jillings, A.B.Knox, H.W.Lee, I.Levine, M.Liu, S.Majerus, A.McDonald, K.McFarlane, C.Mifflin, A.J.Noble, S.Noel, V.M.Novikov, J.K.Rowley, M.Shatkay, J.J.Simpson, D.Sinclair, B.Sur, J.-X.Wang, M.Yeh, X.Zhu

Measurement of 222Rn dissolved in water at the Sudbury Neutrino Observatory

RADIOACTIVITY 222Rn(α); measured Eα, Iα, contribution to detector background.

doi: 10.1016/j.nima.2003.10.103
Citations: PlumX Metrics


2002TA22      Nucl.Instrum.Methods Phys.Res. A489, 178 (2002)

N.J.Tagg, A.S.Hamer, B.Sur, E.D.Earle, R.L.Helmer, G.Jonkmans, B.A.Moffat, J.J.Simpson

The 8Li Calibration Source for the Sudbury Neutrino Observatory

RADIOACTIVITY 8Li(β-) [from 11B(n, α)]; measured Eβ, βα-coin. Use as calibration source in neutrino observatory discussed.

doi: 10.1016/S0168-9002(02)00860-4
Citations: PlumX Metrics


1992JA17      J.Radioanal.Nucl.Chem. 166, 393 (1992)

P.Jagam, J.J.Simpson

Intensity of the 1001 keV γ-Ray in the Decay of 234mPa

RADIOACTIVITY 234mPa(β-) [from 234Th(β-decay)]; measured Eγ, Iγ, γγ-coin summing. 234U deduced transition Iγ.

doi: 10.1007/BF02167784
Citations: PlumX Metrics


1991SI13      Phys.Lett. 269B, 454 (1991)

J.J.Simpson

Has Supernova SN1987A Provided the Lifetime of the 17 keV Neutrino ( Question )

doi: 10.1016/0370-2693(91)90200-A
Citations: PlumX Metrics


1989HI07      Phys.Rev. D39, 1837 (1989)

A.Hime, J.J.Simpson

Evidence of the 17-keV Neutrino in the β Spectrum of 3H

RADIOACTIVITY 3H(β-); measured β-spectra; deduced 17 keV neutrino mixing probability.

doi: 10.1103/PhysRevD.39.1837
Citations: PlumX Metrics


1989SI04      Phys.Rev. D39, 1825 (1989)

J.J.Simpson, A.Hime

Evidence of the 17-keV Neutrino in the β Spectrum of 35S

RADIOACTIVITY 35S; measured β-spectra; deduced 17 keV neutrino mixing probability. Windowless Si(Li) detector.

doi: 10.1103/PhysRevD.39.1825
Citations: PlumX Metrics


1989SI07      Phys.Rev. C39, 2367 (1989)

J.J.Simpson, P.Moorhouse, P.Jagam

Decay of 50V

RADIOACTIVITY 50V(EC), (β-); measured Eγ, Iγ; deduced partial T1/2, log ft. Hyperpure Ge detector.

doi: 10.1103/PhysRevC.39.2367
Citations: PlumX Metrics


1987SI01      Phys.Rev. C35, 752 (1987)

J.J.Simpson

Half-Life of Tritium and the Gamow-Teller Transition Rate

RADIOACTIVITY 3H(β-); measured T1/2, β-endpoint energy; deduced (G(a)/G(V))x<σ(τ)>. Source implanted in Si-Li detector.

doi: 10.1103/PhysRevC.35.752
Citations: PlumX Metrics


1986SI08      Phys.Lett. 174B, 113 (1986)

J.J.Simpson

Is there Evidence for a 17 keV Neutrino in the 35S β Spectrum ( Question ) The case of Ohi et al

RADIOACTIVITY 35S(β-); analyzed β-spectrum data; deduced evidence of 17 keV neutrino mass.

doi: 10.1016/0370-2693(86)91139-1
Citations: PlumX Metrics


1985SI02      Phys.Rev. C31, 575 (1985)

J.J.Simpson, P.Jagam, A.A.Pilt

Electron Capture Decay Rate of 50V

RADIOACTIVITY 50V(EC), (β-); measured Eγ, Iγ; deduced EC-decay T1/2, logft, β--decay T1/2 lower limit. High purity Ge detector.

doi: 10.1103/PhysRevC.31.575
Citations: PlumX Metrics


1985SI07      Phys.Rev. C31, 1891 (1985)

J.J.Simpson, W.R.Dixon, R.S.Storey

End-Point Energy of 3H Beta Decay

RADIOACTIVITY 3H(β-); measured Eβ, endpoint energy; deduced Q. Tritium implanted Si(Li) detector.

doi: 10.1103/PhysRevC.31.1891
Citations: PlumX Metrics


1984SI08      Phys.Rev.Lett. 53, 141 (1984)

J.J.Simpson, P.Jagam, J.L.Campbell, H.L.Malm, B.C.Robertson

New Limit for Neutrinoless Double β Decay of 76Ge

RADIOACTIVITY 76Ge(2β); measured neutrinoless double β-decay T1/2. Large volume Ge detector.

doi: 10.1103/PhysRevLett.53.141
Citations: PlumX Metrics


1981DI09      Nucl.Phys. A363, 173 (1981)

W.R.Dixon, R.S.Storey, J.J.Simpson

Spins of the 3176 and 3646 keV Levels of 44Ti

NUCLEAR REACTIONS 40Ca(α, γ), E=4.22 MeV; measured σ(Eγ, θ), absolute γ-transition strength. 44Ti levels deduced Γγ, J, π.

doi: 10.1016/0375-9474(81)90460-7
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetT0277.


1981MC14      Phys.Rev.Lett. 47, 1720 (1981)

A.B.McDonald, E.D.Earle, J.J.Simpson, R.G.H.Robertson, H.B.Mak

Measurement of Pair Emission from the 2.8-MeV Parity-Mixed Doublet of 21Ne

RADIOACTIVITY 21Ne [from 18O(α, n), E=4.48, 4.85, 4.95 MeV]; measured pair emission relative branching ratios. 21Ne transition deduced γ-multipolarity, δ lower limit.

doi: 10.1103/PhysRevLett.47.1720
Citations: PlumX Metrics


1981SI18      Phys.Rev. D23, 649 (1981)

J.J.Simpson

Measurement of the β-Energy Spectrum of 3H to Determine the Antineutrino Mass

RADIOACTIVITY 3H; measured β-spectrum, β-endpoint energies; deduced atomic effects in 3H, 3He mass difference, antineutrino mass. Tritium implantation.

doi: 10.1103/PhysRevD.23.649
Citations: PlumX Metrics


1980DI14      Can.J.Phys. 58, 1360 (1980)

W.R.Dixon, R.S.Storey, J.J.Simpson

An Isospin-Mixed Triplet in 44Ti

NUCLEAR REACTIONS 40Ca(α, γ), (α, p), E=4.58 MeV; measured Eγ, Iγ, σ(Eγ, E), γ(θ). 44Ti resonances deduced absolute γ-transition, proton decay strengths, T, isospin mixing effects, γ-branching ratio.

doi: 10.1139/p80-175
Citations: PlumX Metrics


1979PI09      Phys.Rev. C20, 1186 (1979)

A.A.Pilt, J.A.Kuehner, S.J.Wilson, J.J.Simpson

12C(12C, t)21Na Reaction between 37 and 50 MeV

NUCLEAR REACTIONS 12C(12C, t), E=37-50 MeV; measured σ(E, Et, θ). 21Na deduced levels.

doi: 10.1103/PhysRevC.20.1186
Citations: PlumX Metrics


1978DI11      Phys.Rev. C18, 2731 (1978); Erratum Phys.Rev. C19, 2077 (1979)

W.R.Dixon, R.S.Storey, J.J.Simpson

Isospin Forbidden γ-Decay of the Lowest T = 2 State in 44Ti

NUCLEAR REACTIONS 40Ca(α, γ), E=4.65 MeV; measured Eγ, γ(θ), branching ratios. 44Ti levels deduced splitting of lowest T=2 state, transition strengths, isospin mixing.

doi: 10.1103/PhysRevC.18.2731
Citations: PlumX Metrics


1978SI01      Phys.Rev.Lett. 40, 154 (1978)

J.J.Simpson, S.J.Wilson, W.R.Dixon, R.S.Storey, J.A.Kuehner

Isospin Impurity in the Compound Nucleus from a Comparison of Fluctuations in Mirror Reactions

NUCLEAR REACTIONS 12C(14N, t), (14N, 3He), E=39-50.2 MeV; measured σ(E), Ericson fluctuations.

doi: 10.1103/PhysRevLett.40.154
Citations: PlumX Metrics


1977DI07      Phys.Rev. C15, 1896 (1977)

W.R.Dixon, R.S.Storey, J.J.Simpson

Levels of 44Ti from the 40Ca(α, γ)44Ti Reaction

NUCLEAR REACTIONS 40Ca(α, γ), E=4.5-6 MeV; measured σ(E, Eγ, θ), γγ-coin, DSA. 44Ti deduced levels, J, π, T1/2, γ-branching. Enriched targets, Ge(Li), NaI(Tl) detectors.

doi: 10.1103/PhysRevC.15.1896
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetT0088.


1977SI14      Nucl.Phys. A287, 362 (1977)

J.J.Simpson, P.O.Tjom, I.Espe, G.B.Hagemann, B.Herskind, M.Neiman

Decay of the Compound Nucleus 74Kr Formed in the Reaction 16O + 58Ni

NUCLEAR REACTIONS 58Ni(16O, xnypzαγ), E=44.5-76.5 MeV; measured σ(E, Eγ), 58Ni(16O, 2pγ), 58Ni(16O, 3pγ); measured particle γ-coin, γ-ray multiplicities, < Eγ > , σ(Ep, Eγ). Enriched target.

doi: 10.1016/0375-9474(77)90502-4
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetB0146.


1976DI06      Phys.Rev. C13, 1745 (1976)

W.R.Dixon, R.S.Storey, J.J.Simpson, R.D.Lawson

Upper Limit on ΔT = 2, E2 Transition in 44Ti

NUCLEAR REACTIONS 40Ca(α, γ); measured γ-spectra. 44Ti deduced levels, B(E2).

doi: 10.1103/PhysRevC.13.1745
Citations: PlumX Metrics


1975SI11      Phys.Rev. C11, 1828 (1975)

J.J.Simpson, W.R.Dixon, R.S.Storey

Interpretation of 44Ti as a Soft Asymmetric Rotor

NUCLEAR STRUCTURE 44Ti; calculated levels, B(E2). Asymmetric rotor model with vibrations.

doi: 10.1103/PhysRevC.11.1828
Citations: PlumX Metrics


1975SI12      Phys.Rev.Lett. 35, 23 (1975)

J.J.Simpson, S.J.Wilson, P.W.Green, J.A.Kuehner, W.R.Dixon, R.S.Storey

Identification of the 6+ and 8+ Yrast States in 40Ca

NUCLEAR REACTIONS 28Si(14N, npγ), E=34 MeV; measured σ(Eγ, θ). 40Ca deduced levels, J, λ.

doi: 10.1103/PhysRevLett.35.23
Citations: PlumX Metrics


1975SI19      Phys.Rev. C12, 468 (1975)

J.J.Simpson, W.Dunnweber, J.P.Wurm, P.W.Green, J.A.Kuehner, W.R.Dixon, R.S.Storey

Yrast Levels in 44Ti

NUCLEAR REACTIONS 32S(14N, pnγ), E=26-43 MeV; measured σ(E, Eγ, θ), γγ-coin, DSA. 44Ti deduced levels, J, π, T1/2, λ, B(E2).

doi: 10.1103/PhysRevC.12.468
Citations: PlumX Metrics


1973DI04      Nucl.Phys. A202, 579 (1973)

W.R.Dixon, R.S.Storey, J.J.Simpson

Lifetimes of 44Ti Levels

NUCLEAR REACTIONS 40Ca(α, γ), E=4.00, 4.26, 4.52 MeV; measured Eγ, Doppler-shift attenuation. 44Ti deduced levels E, T1/2. Enriched target.

doi: 10.1016/0375-9474(73)90644-1
Citations: PlumX Metrics


1973SI05      Nucl.Phys. A203, 221 (1973)

J.J.Simpson

The Decay of 44Sc

RADIOACTIVITY 44Sc[from 44Ti]; measured Eγ, Iγ, γγ-coin. 44Ca deduced levels, branching ratios.

doi: 10.1016/0375-9474(73)90434-X
Citations: PlumX Metrics


1973SI28      Phys.Rev.Lett. 31, 946 (1973)

J.J.Simpson, W.R.Dixon, R.S.Storey

Evidence for Rotational Bands in 44Ti

NUCLEAR REACTIONS 40Ca(α, γ); measured Eγ, γγ-coin. 44Ti deduced levels, J, π, band structure.

doi: 10.1103/PhysRevLett.31.946
Citations: PlumX Metrics


1972SI06      Nucl.Phys. A185, 553 (1972)

J.J.Simpson, D.Ward, G.T.Ewan

Coulomb Excitation of the Excited 0+ State in 70Ge

NUCLEAR REACTIONS 70Ge(35Cl, 35Cl'), E=60-83 MeV; 70Ge(32S, 32S'), E=75.7 MeV; measured σ(E;Eγ), Eγ, γ-yield ratios. 70Ge deduced B(E2) to excited 0+ state. Enriched targets.

doi: 10.1016/0375-9474(72)90031-0
Citations: PlumX Metrics


1972SI34      Phys.Rev.Lett. 29, 1472 (1972)

J.J.Simpson, W.R.Dixon, R.S.Storey

Decay of the Lowest T = 2 State in 44Ti

NUCLEAR REACTIONS 40Ca(α, γ), E approx 4.645 MeV; measured σ(Eγ, θ(γ)). 44Ti deduced lowest T=2 state, level-width, γ-branching.

doi: 10.1103/PhysRevLett.29.1472
Citations: PlumX Metrics


1971SI13      Phys.Rev. C4, 443 (1971)

J.J.Simpson, W.R.Dixon, R.S.Storey

Study of 44Ti by the 40Ca(α, γ)44Ti Reaction

NUCLEAR REACTIONS 40Ca(α, γ), E=3.5-4.7 MeV; measured σ(E;Eγ, θ(γ)), Q. 44Ti deduced levels, γ-mixing, γ-branching, mass excess.

doi: 10.1103/PhysRevC.4.443
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetT0088.


1970AI01      Can.J.Phys. 48, 1617 (1970)

J.H.Aitken, R.E.Azuma, A.E.Litherland, A.M.Charlesworth, D.W.O.Rogers, J.J.Simpson

A Survey of New Resonances in the 15N(α, γ)19F Reaction

NUCLEAR REACTIONS 15N(α, γ), E=0.6-3.15 MeV; measured σ(E;Eγ, θ(γ)). 19F deduced resonances, level-width, branching ratios. 19F deduced levels, J, π.

doi: 10.1139/p70-203
Citations: PlumX Metrics


1970LA02      Can.J.Phys. 48, 827 (1970)

S.T.Lam, A.E.Litherland, J.J.Simpson

Study of the 1459-keV Level in 19F by the 19F(p, p'γ)19F Reaction

NUCLEAR REACTIONS 19F(p, p'γ), E=2.78 MeV; measured σ(Eγ, θ(γ)), γ-linear polarization. 19F level deduced γ-mixing, branching ratios.

doi: 10.1139/p70-105
Citations: PlumX Metrics


1969SI14      Phys.Letters 30B, 478 (1969)

J.J.Simpson, W.R.Dixon, R.S.Storey

The Mass and Energy Levels of 44Ti

NUCLEAR REACTIONS 40Ca(α, γ), E = 3.9-4.7 MeV; measured σ(E;Eγ, θ(γ)). 44Ti deduced resonances, levels, J, π, branching ratios.

doi: 10.1016/0370-2693(69)90177-4
Citations: PlumX Metrics


1969SI15      Nucl.Phys. A138, 529 (1969)

J.J.Simpson, U.Smilansky, D.Ashery

Coulomb Excitation and the Reorientation Effect in 70Ge and 76Ge

NUCLEAR REACTIONS 70,76Ge(α, α'), E = 5-11 MeV; 70,76Ge(16O, 16O'), E = 25, 34-43 MeV; measured σ(E;Eα'), σ(E;E(16O')). 70,76Ge levels deduced B(E2), quadrupole moment. Enriched targets.

doi: 10.1016/0375-9474(69)90236-X
Citations: PlumX Metrics


1968SI05      Phys.Letters 27B, 633 (1968); Erratum Phys.Letters 28B, 422 (1969)

J.J.Simpson, U.Smilansky, J.P.Wurm

The Reorientation Effect in 114Cd

NUCLEAR STRUCTURE 114Cd; measured not abstracted; deduced nuclear properties.

doi: 10.1016/0370-2693(68)90300-6
Citations: PlumX Metrics


1967SI03      Nucl.Phys. A94, 177 (1967)

J.J.Simpson, D.Eccleshall, M.J.L.Yates, N.J.Freeman

A Determination of Quadrupole Moments in 114Cd, 130Ba, 148Sm and 150Sm

NUCLEAR REACTIONS 114Cd, 130Ba, 148,150Sm(16O, 16O'), E = 19-27 MeV; 114Cd, 130Ba, 148,150Sm(32S, 32S'), E = 41-54 MeV; measured σ(E; E(O')), σ(E;E(S')). 114Cd, 130Ba, 148,150Sm deduced B(E2), quadrupole moment. Enriched targets.

doi: 10.1016/0375-9474(67)90817-2
Citations: PlumX Metrics


1966EC02      Nucl.Phys. 78, 481 (1966)

D.Eccleshall, M.J.L.Yates, J.J.Simpson

Coulomb Excitation of Low-Energy States in Ce, Nd and Sm Isotopes

NUCLEAR REACTIONS 140,142Ce, 142,143,144,145,146,148,150Nd, 144,148,150Sm(16O, 16O'), E=31-45 MeV; measured σ(E;E(16O')). 140,142Ce, 142,143,144,145,146,148,150Nd, 144,148,150Sm deduced B(e2).enriched targets.

doi: 10.1016/0029-5582(66)90890-X
Citations: PlumX Metrics


1965SI02      Nucl.Phys. 62, 385 (1965)

J.J.Simpson, J.A.Cookson, D.Eccleshall, M.J.L.Yates

Coulomb Excitation of Ti50, Cr52 and Fe54 First Excited States

NUCLEAR REACTIONS 50Ti, 52Cr, 54Fe(16O, 16O'), E=31-41 MeV; measured σ(E;E(16O')). 50Ti, 52Cr, 54Fe deduced B(E2).

doi: 10.1016/0029-5582(65)90486-4
Citations: PlumX Metrics


1964EC06      Compt.Rend.Congr.Intern.Phys.Nucl., Paris, P.Gugenberger, Ed., Centre National de la Recherche Scientifique, Paris, Vol.II, p.469(1964)

D.Eccleshall, M.J.L.Yates, J.A.Cookson, J.J.Simpson

Coulomb Excitation of Some Even S.C.S. Nuclei and Their Neighbors

NUCLEAR STRUCTURE 52Cr, 54Fe, 50Ti, 148Nd, 148Sm, 142Nd, 146Nd, 144Sm, 144Nd, 142Ce, 140Ce, 150Sm; measured not abstracted; deduced nuclear properties.


1963SI04      Phys.Canada 19, No.3, 18, Abstr.4.7 (1963)

J.J.Simpson, J.D.Prentice, H.S.Caplan

Lifetime of the 2.15 Mev. Level in B10

NUCLEAR STRUCTURE 6Li; measured not abstracted; deduced nuclear properties.


1962CL01      Bull.Am.Phys.Soc. 7, No.1, 60, R13 (1962)

M.A.Clark, J.J.Simpson, A.E.Litherland

Lifetime of the 3.85-MeV Level in C13

NUCLEAR STRUCTURE 12C; measured not abstracted; deduced nuclear properties.


1962SI08      Can.J.Phys. 40, 769 (1962)

J.J.Simpson, M.A.Clark, A.E.Litherland

Lifetime of the 3.85-MeV Level in C13

NUCLEAR STRUCTURE 13C, 2H; measured not abstracted; deduced nuclear properties.

doi: 10.1139/p62-082
Citations: PlumX Metrics


1961LI08      AECL-1408, p.9 (1961)

A.E.Litherland, M.A.Clark, J.J.Simpson

The Lifetime of the 3.85 MeV Level in C13

NUCLEAR STRUCTURE 2H; measured not abstracted; deduced nuclear properties.


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