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NSR database version of April 27, 2024.

Search: Author = J.W.Roberts

Found 18 matches.

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1999KU09      Phys.Lett. 452B, 167 (1999)

V.A.Kudryavtsev, M.J.Lehner, C.D.Peak, T.B.Lawson, P.K.Lightfoot, J.E.McMillan, J.W.Roberts, N.J.C.Spooner, D.R.Tovey, C.K.Ward, P.F.Smith, N.J.T.Smith

Characteristics of Alpha, Gamma and Nuclear Recoil Pulses from NaI(Tl) at 10-100 keV Relevant to Dark Matter Searches

doi: 10.1016/S0370-2693(99)00270-1
Citations: PlumX Metrics

1995FA19      Phys.Scr. T56, 245 (1995)

B.Fant, B.Cederwall, J.Cederkall, L.O.Norlin, R.Wyss, P.Fallon, C.W.Beausang, P.A.Butler, J.W.Roberts, A.M.Bruce, D.M.Cullen, S.M.Mullins, R.J.Poynter, R.Wadsworth, M.A.Riley, W.Korten, M.J.Piiparinen

Shell Structure and Shape Coexistence in 195Pb

NUCLEAR REACTIONS 164Dy(36S, 5n), E=170 MeV; 164Dy(36S, 4n), E=160 MeV; measured Eγ, Iγ, γγ-coin, DCO ratios. 195Pb deduced high-spin levels, J, π, dipole bands, γ-multipolarity, deformation, shape related features.

doi: 10.1088/0031-8949/1995/T56/039
Citations: PlumX Metrics

1994ME12      Nucl.Phys. A575, 221 (1994)

Z.Meliani, J.S.Dionisio, C.Schuck, Ch.Vieu, F.A.Beck, T.Byrski, D.Curien, G.Duchene, J.C.Merdinger, P.Fallon, J.W.Roberts, J.F.Sharpey-Schafer

The High-Spin States of 149Tb

NUCLEAR REACTIONS 122Sn(31P, 4n), E=140, 150 MeV; measured Eγ, Iγ, γγ-coin, DCO ratios. 149Tb deduced high-spin levels, J, π, γ-multipolarity, ICC, T1/2. Isotopically enriched targets, Compton suppressed Ge detector array, BaF2 ball, eγ spectrometer. Deformed independent particle model calculations.

doi: 10.1016/0375-9474(94)90146-5
Citations: PlumX Metrics

1993BI05      Nucl.Phys. A553, 527c (1993)

U.Birkental, A.P.Byrne, S.Heppner, H.Hubel, W.Schmitz, P.Fallon, P.D.Forsyth, J.W.Roberts, H.Kluge, E.Lubkiewicz, G.Goldring

G-Factors of High-Spin States in 154Dy

NUCLEAR REACTIONS 110Pd(48Ca, 4n), E=210 MeV; measured γ(θ, H). 154Dy levels deduced g, configuration. Recoil transient field technique.

doi: 10.1016/0375-9474(93)90653-F
Citations: PlumX Metrics

1993BI09      Nucl.Phys. A555, 643 (1993)

U.Birkental, A.P.Byrne, S.Heppner, H.Hubel, W.Schmitz, P.Fallon, P.D.Forsyth, J.W.Roberts, H.Kluge, E.Lubkiewicz, G.Goldring

High-Spin g-Factors in 154Dy

NUCLEAR REACTIONS 110Pd(48Ca, 4n), E=210 MeV; measured γγ-coin, recoil distance in Gd foil, γγ(θ, H). 154Dy deduced levels, J, π, g-factors, band structure.

doi: 10.1016/0375-9474(93)90493-H
Citations: PlumX Metrics

1991BR25      Phys.Lett. 264B, 17 (1991)

C.Broude, M.Hass, G.Goldring, A.Alderson, I.Ali, D.M.Cullen, P.Fallon, F.Hanna, J.W.Roberts, J.F.Sharpey-Schafer

The Quadrupole Moment of the K = 25 Isomer in 182Os

NUCLEAR REACTIONS 150Nd(36S, 4n), E=160 MeV; measured γ(t), γ(θ, t), ratio function. 182Os deduced isomer quadrupole moment. Isomer implanted in single crystal of Os.

doi: 10.1016/0370-2693(91)90695-M
Citations: PlumX Metrics

1991CU01      Phys.Rev.Lett. 67, 1175 (1991)

D.M.Cullen, M.A.Riley, A.Alderson, I.Ali, C.W.Beausang, T.Bengtsson, M.A.Bentley, P.Fallon, P.D.Forsyth, F.Hanna, S.M.Mullins, W.Nazarewicz, R.J.Poynter, P.H.Regan, J.W.Roberts, W.Satula, J.F.Sharpey-Schafer, J.Simpson, G.Sletten, P.J.Twin, R.Wadsworth, R.Wyss

Cullen et al. Reply:

NUCLEAR STRUCTURE 193Hg; analyzed data; deduced superdeformed states features.

doi: 10.1103/PhysRevLett.67.1175
Citations: PlumX Metrics

1991FA07      Phys.Lett. 257B, 269 (1991)

P.Fallon, A.Alderson, I.Ali, D.M.Cullen, P.D.Forsyth, M.A.Riley, J.W.Roberts, J.F.Sharpey-Schafer, P.J.Twin, M.A.Bentley, A.M.Bruce

The Collectivity and the De-Excitation of the Yrast Superdeformed Band in 150Gd

NUCLEAR REACTIONS 130Te(26Mg, 6n), E=145 MeV; measured γγ-coin spectra, DSA. 150Gd deduced levels, J, π, deformation, superdeformation, band structure, quadrupole moment.

doi: 10.1016/0370-2693(91)91891-X
Citations: PlumX Metrics

1990BY01      Phys.Rev.Lett. 64, 1650 (1990)

T.Byrski, F.A.Beck, D.Curien, C.Schuck, P.Fallon, A.Alderson, I.Ali, M.A.Bentley, A.M.Bruce, P.D.Forsyth, D.Howe, J.W.Roberts, J.F.Sharpey-Schafer, G.Smith, P.J.Twin

Observation of Identical Superdeformed Bands in N = 86 Nuclei

NUCLEAR REACTIONS 130Te(26Mg, 6n), E=145 MeV; 130Te(27Al, 6n), E=150 MeV; measured γγ-coin, sum spectra. 150Gd, 151Tb deduced levels, J, π, superdeformed band structure.

doi: 10.1103/PhysRevLett.64.1650
Citations: PlumX Metrics

1990CU05      Phys.Rev.Lett. 65, 1547 (1990)

D.M.Cullen, M.A.Riley, A.Alderson, I.Ali, C.W.Beausang, T.Bengtsson, M.A.Bentley, P.Fallon, P.D.Forsyth, F.Hanna, S.M.Mullins, W.Nazarewicz, R.J.Poynter, P.H.Regan, J.W.Roberts, W.Satula, J.F.Sharpey-Schafer, J.Simpson, G.Sletten, P.J.Twin, R.Wadsworth, R.Wyss

Landau-Zener Crossing in Superdeformed 193Hg: Evidence for octupole correlations in superdeformed nuclei

NUCLEAR REACTIONS 150Nd(48Ca, 5n), E=205, 213 MeV; measured Eγ, Iγ, γγ-coin. 193Hg deduced levels, J, π, superdeformed band structure, shape features.

doi: 10.1103/PhysRevLett.65.1547
Citations: PlumX Metrics

1990CU06      Nucl.Phys. A520, 105c (1990)

D.M.Cullen, M.A.Riley, A.Alderson, I.Ali, T.Bengtsson, M.A.Bentley, A.M.Bruce, P.Fallon, P.D.Forsyth, F.Hanna, S.M.Mullins, W.Nazarewicz, R.Poynter, P.Regan, J.W.Roberts, W.Satula, J.F.Sharpey-Schafer, J.Simpson, G.Sletten, P.J.Twin, R.Wadsworth, R.Wyss

Evidence for Octupole Softness of the Superdeformed Shape from Band Interactions in 193,194Hg

NUCLEAR REACTIONS 150Nd(48Ca, 4n), E=205 MeV; 150Nd(48Ca, 5n), E=213 MeV; measured γγ-coin. 193,194Hg deduced levels, J, π, superdeformed band structure.

doi: 10.1016/0375-9474(90)91137-G
Citations: PlumX Metrics

1990GA15      Nucl.Phys. A513, 344 (1990)

J.Gascon, C.-H.Yu, G.B.Hagemann, M.C.Carpenter, J.M.Espino, Y.Iwata, T.Komatsubara, J.Nyberg, S.Ogaza, G.Sletten, P.O.Tjom, D.C.Radford, J.Simpson, A.Alderson, M.A.Bentley, P.Fallon, P.D.Forsyth, J.W.Roberts, J.F.Sharpey-Schafer

Configuration-Dependent Transition Rates in 157Ho

NUCLEAR REACTIONS 124Sn(37Cl, 4n), E=150 MeV; 142Ce(19F, 4n), E=85.5 MeV; measured Iγ, γγ-coin, DSA. 157Ho deduced levels, J, π, T1/2, transition quadrupole moments, nuclear deformation, B(M1). Enriched targets, array of Compton-suppressed Ge-detectors.

doi: 10.1016/0375-9474(90)90102-R
Citations: PlumX Metrics

1990RI03      J.Phys.(London) G16, L67 (1990)

M.A.Riley, J.W.Roberts, J.Simpson, A.Alderson, I.Ali, M.A.Bentley, A.M.Bruce, R.Chapman, D.M.Cullen, P.Fallon, P.D.Forsyth, J.C.Lisle, J.N.Mo, J.F.Sharpey-Schafer

The Spectroscopy of 161,162Er at Spins up to 50(h-bar) in the Unpaired Regime

NUCLEAR REACTIONS 130Te(36S, 5n), (36S, 4n), E=170 MeV; measured γγ-coin. 161,162Er deduced levels, J, π, band structure.

doi: 10.1088/0954-3899/16/3/006
Citations: PlumX Metrics

1990RI05      Nucl.Phys. A512, 178 (1990)

M.A.Riley, D.M.Cullen, A.Alderson, I.Ali, P.Fallon, P.D.Forsyth, F.Hanna, S.M.Mullins, J.W.Roberts, J.F.Sharpey-Schafer, P.J.Twin, R.Poynter, R.Wadsworth, M.A.Bentley, A.M.Bruce, J.Simpson, G.Sletten, W.Nazarewicz, T.Bengtsson, R.Wyss

Multiple Superdeformed Bands in 194Hg and Their Dynamical Moments of Inertia

NUCLEAR REACTIONS 150Nd(48Ca, 4n), E=205 MeV; measured Eγ, Iγ, γγ-coin. 194Hg deduced levels, J, π, rotational, superdeformed band characteristics. Enriched targets, Ge detectors, array of anti-Compton spectrometers, 4π bismuth germanate ball. Cranked Woods-Saxon and Nilsson model calculations.

doi: 10.1016/0375-9474(90)90010-J
Citations: PlumX Metrics

1990RI09      Nucl.Phys. A520, 279c (1990)

M.A.Riley, J.W.Roberts, J.Simpson, A.Alderson, I.Ali, D.M.Cullen, P.Fallon, P.D.Forsyth, J.F.Sharpey-Schafer, M.A.Bentley, A.M.Bruce, R.Chapman, J.C.Lisle, J.N.Mo

The Unpaired Spectroscopy of 161,162Er at Spins up to 50(h-bar)

NUCLEAR REACTIONS 130Te(36S, 4n), (36S, 5n), E=170 MeV; measured γγ-coin, sum spectra. 161,162Er deduced levels, J, π, band structure.

doi: 10.1016/0375-9474(90)91153-I
Citations: PlumX Metrics

1990WA09      Phys.Rev.Lett. 65, 416 (1990)

P.M.Walker, G.Sletten, N.L.Gjorup, M.A.Bentley, J.Borggreen, B.Fabricius, A.Holm, D.Howe, J.Pedersen, J.W.Roberts, J.F.Sharpey-Schafer

High-K Barrier Penetration in 174Hf: A challenge to K selection

NUCLEAR REACTIONS 130Te(48Ca, 4n), E ≈ 198 MeV; measured γγ-coin. 174Hf deduced levels, J, π, isomer decay features, band structure.

doi: 10.1103/PhysRevLett.65.416
Citations: PlumX Metrics

1990ZY01      Nucl.Phys. A510, 441 (1990)

L.Zybert, J.B.A.England, G.M.Field, O.Karban, R.Zybert, M.Becha, C.N.Pinder, G.C.Morrison, M.Bentley, P.Fallon, R.Moktah, J.W.Roberts, J.F.Sharpey-Schafer

Deep Proton-Hole States in 147Pr, 151Pm and 155Eu

NUCLEAR REACTIONS 148Nd(t, α), E=35.32, 37.32 MeV; 152Sm(t, α), 156Gd(t, α), E=35.32 MeV; measured σ(θ). 147Pr, 151Pm, 155Eu deduced relative nuclear structure factors, g7/2-g9/2 hole strength distributions. Enriched targets. Calculated deformed Woods-Saxon proton single particle levels.

doi: 10.1016/0375-9474(90)90061-P
Citations: PlumX Metrics
Data from this article have been entered in the EXFOR database. For more information, access X4 datasetF0088.

1989FA02      Phys.Lett. 218B, 137 (1989)

P.Fallon, P.Alderson, M.A.Bentley, A.M.Bruce, P.D.Forsyth, D.Howe, J.W.Roberts, J.F.Sharpey-Schafer, P.J.Twin, F.A.Beck, T.Byrski, D.Curien, C.Schuck

Superdeformed Bands in 150Gd and 151Tb: Evidence for the influence of high-N intruder states at large deformations

NUCLEAR REACTIONS 130Te(26Mg, 6n), E=145 MeV; 130Te(27Al, 6n), E=150 MeV; measured γγ-coin, γγ(θ). 150Gd, 151Tb deduced levels, J, π, superdeformed band structure, shapes, moments of inertia.

doi: 10.1016/0370-2693(89)91408-1
Citations: PlumX Metrics

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