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Search: Author = W.J.Vermeer

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1996UR03      Phys.Rev. C54, 2264 (1996)

W.Urban, T.Rzaca-Urban, J.L.Durell, Ch.P.Hess, C.J.Pearson, W.R.Phillips, B.J.Varley, W.J.Vermeer, Ch.Vieu, J.S.Dionisio, M.Pautrat, J.C.Bacelar

Excited Levels in ¹⁴⁵Pm

NUCLEAR REACTIONS ¹³⁴Xe(¹⁵N, 4n), E=78 MeV; measured Eγ, Iγ, γγ(θ), linear polarization. ¹⁴⁶Nd(d, 3n), E=18 MeV; measured γγ-, (electron)γ-coin. ¹⁴⁵Pm deduced high-spin levels, J, π, single-particle configurations, ICC, γ-multipolarity.

doi: 10.1103/PhysRevC.54.2264
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1995RZ02      Nucl.Phys. A588, 767 (1995)

T.Rzaca-Urban, W.Urban, J.L.Durell, W.R.Phillips, B.J.Varley, Ch.P.Hess, C.J.Pearson, W.J.Vermeer, Ch.Vieu, J.S.Dionisio, M.Pautrat, J.C.Bacelar

Study of the High-Spin Structure of ¹⁴⁶Pm

NUCLEAR REACTIONS ¹³⁶Xe(¹⁵N, 5n), E=78 MeV; ¹⁴⁶Nd(d, 2n), E=18 MeV; measured γγ(t), DCO ratios, Iγ, (e)(γ)-coin. ¹⁴⁶Pm deduced levels, J, π, ICC, Iγ, branchings. Solid ¹³⁶Xe target. Shell-model calculations.

doi: 10.1016/0375-9474(95)00065-9
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1995UR01      Nucl.Phys. A587, 541 (1995)

W.Urban, J.L.Durell, W.R.Phillips, B.J.Varley, Ch.P.Hess, M.A.Jones, C.J.Pearson, W.J.Vermeer, Ch.Vieu, J.S.Dionisio, M.Pautrat, J.C.Bacelar

Study of Excited Levels in ¹⁴⁷Pm

NUCLEAR REACTIONS ¹³⁶Xe(¹⁵N, 4n), E=78 MeV; ¹⁴⁸Nd(d, 3n), E=18 MeV; measured γγ(t), DCO ratios, Iγ, Eγ. ¹⁴⁷Pm deduced levels, J, π, T_1/2, ICC, Iγ, branching, configurations, octupole deformation.

doi: 10.1016/0375-9474(95)00018-V
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1994KH01      Nucl.Phys. A567, 495 (1994)

M.K.Khan, W.J.Vermeer, W.Urban, J.B.Fitzgerald, A.S.Mowbray, B.J.Varley, J.L.Durell, W.R.Phillips

Band Structures and Octupole Correlation Effects in ¹⁵¹Sm

NUCLEAR REACTIONS ¹⁵⁰Nd(α, 3n), E=35 MeV; measured γγ-coin, γγ(θ). ¹⁵¹Sm deduced levels, J, π, Iγ, γ-branching.

doi: 10.1016/0375-9474(94)90021-3
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1994PE03      Phys.Rev. C49, R1239 (1994)

C.J.Pearson, W.R.Phillips, J.L.Durell, B.J.Varley, W.J.Vermeer, W.Urban, M.K.Khan

Opposite-Parity Bands in ¹⁵³Eu

NUCLEAR REACTIONS ¹⁵⁰Nd(⁷Li, 4n), E=40 MeV; measured Eγ, Iγ, γγ(θ). ¹⁵³Eu deduced levels, J, π, B(E1), B(E2), δ, band structure.

doi: 10.1103/PhysRevC.49.R1239
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1994SM15      Nucl.Instrum.Methods Phys.Res. A350, 314 (1994)

A.G.Smith, W.J.Vermeer

Automated Peak Searching and Fitting of Data from Gamma-Ray Coincidence Experiments

RADIOACTIVITY ²⁴⁸Cm(SF); ¹⁶⁰Er(EC); analyzed γγ-, γγγ-coin data. Automated peak searching codes.

NUCLEAR REACTIONS ¹¹⁶Cd(⁴⁸Ca, xnp), E=210 MeV; analyzed γγ-, γγγ-coin data. Automated peak searching codes.

doi: 10.1016/0168-9002(94)91180-0
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1993RO05      Nucl.Phys. A554, 322 (1993)

B.A.Robson, R.H.Spear, W.J.Vermeer, M.Zielinska-Pfabe

Low-Energy Behaviour of the Heavy-Ion Optical Model Potentials for ¹²C and ¹⁶O Scattering from ²⁰⁸Pb

NUCLEAR REACTIONS ²⁰⁸Pb(¹²C, ¹²C), (¹²C, ¹²C'), E=42-61 MeV; measured σ(θ); deduced model parameters. Coupled-channels analysis, other data analyzed.

doi: 10.1016/0375-9474(93)90344-W
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1993VE04      Nucl.Phys. A559, 422 (1993)

W.J.Vermeer, W.Urban, M.K.Khan, C.J.Pearson, A.B.Wiseman, B.J.Varley, J.L.Durell, W.R.Phillips

Gamma-Decays of ¹⁵¹Eu Levels Populated in the ¹⁵⁰Nd(⁶Li, 5n) Reaction

NUCLEAR REACTIONS ¹⁵⁰Nd(⁶Li, 5n), E=47 MeV; measured γγ-coin, γγ(θ), Iγ. ¹⁵¹Eu deduced levels, J, π, Iγ, branchings.

doi: 10.1016/0375-9474(93)90161-P
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1990VE02      Phys.Lett. 234B, 219 (1990)

W.J.Vermeer

Shape Isomerism in ²²Na ( Question )

NUCLEAR STRUCTURE ²²Na; calculated levels, B(λ), spectroscopic quadrupole moments. Shell model.

doi: 10.1016/0370-2693(90)91917-Z
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1990VE14      Phys.Rev. C42, R1183 (1990)

W.J.Vermeer, M.K.Khan, A.S.Mowbray, J.B.Fitzgerald, J.A.Cizewski, B.J.Varley, J.L.Durell, W.R.Phillips

Octupole Correlation Effects in ¹⁵¹Pm

NUCLEAR REACTIONS ¹⁵⁰Nd(α, 2np), E=35 MeV; measured Eγ, Iγ, γγ-coin. ¹⁵¹Pm deduced levels, J, π, ICC, γ-multipolarity.

doi: 10.1103/PhysRevC.42.R1183
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1989LI05      Phys.Rev. C39, 1142 (1989)

C.S.Lim, R.H.Spear, W.J.Vermeer, M.P.Fewell

Possible Discontinuity in Octupole Behavior in the Pt-Hg Region

NUCLEAR REACTIONS ^194,196,198Pt(α, α'), E=14.6 MeV; ^194,196,198Pt(¹²C, ¹²C'), E=43 MeV; ^194,196,198Pt(⁷Li, ⁷Li'), E not given; measured particle spectra following Coulomb excitation. ^194,196,198Pt levels deduced B(λ).

doi: 10.1103/PhysRevC.39.1142
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1989PR01      Nucl.Phys. A499, 117 (1989)

D.M.Pringle, W.J.Vermeer

Alpha-Particle Decay Widths of Levels in ¹⁹F

NUCLEAR REACTIONS ¹²C(¹¹B, α), E=33, 35, 38, 48 MeV; measured σ(Eα), σ(Eα, E(¹⁹F)). ¹⁹F deduced levels, Γγ/Γ, Γα.

doi: 10.1016/0375-9474(89)90273-X
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1989SP07      Aust.J.Phys. 42, 345 (1989)

R.H.Spear, W.J.Vermeer, S.M.Burnett, G.J.Gyapong, C.S.Lim

Coulomb Excitation of ¹⁴²Ce and ¹⁴⁴Nd

NUCLEAR REACTIONS ¹⁴²Ce(α, α'), E=10, 12, 11.8 MeV; ¹⁴²Ce, ¹⁴⁴Nd(¹²C, ¹²C'), E=35 MeV; ¹⁴²Ce(¹⁶O, ¹⁶O'), E=46 MeV; ¹⁴⁴Nd(¹⁶O, ¹⁶O'), E=48 MeV; measured particle spectra following Coulomb excitation. ¹⁴²Ce, ¹⁴⁴Nd levels deduced B(λ), static quadrupole moments.

doi: 10.1071/PH890345
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1989VE01      Phys.Lett. 217B, 28 (1989)

W.J.Vermeer, D.M.Pringle, E.F.Garman, I.F.Wright

Yrast 8⁺ and 9⁺ States of ²²Na

NUCLEAR REACTIONS ¹²C(¹⁴N, α), E=32, 33 MeV; measured σ(Eα), αγ-coin. ²²Na deduced levels, T_1/2, Γγ/Γ, possible J, π.

doi: 10.1016/0370-2693(89)91510-4
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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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1988LI01      Phys.Lett. 200B, 263 (1988)

C.S.Lim, M.D.Rebgetz, R.H.Spear, W.J.Vermeer, M.P.Fewell, B.A.Robson, R.Smith

Energy Dependence of the ¹⁶O-²⁰⁸Pb Effective Interaction

NUCLEAR REACTIONS ²⁰⁸Pb(¹⁶O, ¹⁶O), (¹⁶O, ¹⁶O'), E=57-79 MeV; measured σ(ratio). ²⁰⁸Pb level deduced excitation probability. Effective interaction description, Coulomb-nuclear interference effects.

doi: 10.1016/0370-2693(88)90768-X
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1988LI22      Nucl.Phys. A485, 399 (1988)

C.S.Lim, R.H.Spear, W.J.Vermeer, M.P.Fewell, G.J.Gyapong

Electric Quadrupole Moments of the First Excited State of ¹⁹²Os

NUCLEAR REACTIONS ¹⁹²Os(α, α'), E=14.2-16.5 MeV; ¹⁹²Os(¹²C, ¹²C'), E=40-55 MeV; ¹⁹²Os(¹²C, ¹²C'), E=44-47 MeV; measured Coulomb excitation probabilities. ¹⁹²Os levels deduced B(E2), static quadrupole moment. Enriched targets.

doi: 10.1016/0375-9474(88)90110-8
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1988VE06      Nucl.Phys. A485, 380 (1988)

W.J.Vermeer, D.M.Pringle, I.F.Wright

Measurements of Γ(γ)/Γ for States of ²⁴Mg in the Excitation Region 10 < E(x) < 12 MeV

NUCLEAR REACTIONS ¹²C(¹⁶O, α), E=31.73, 32.80, 33.85, 34.70 MeV; measured σ(E(α)), σ(E(α), E(²⁴Mg)). ²⁴Mg deduced levels, Γ(γ)/Γ, Γ(α), Γ(γ).

doi: 10.1016/0375-9474(88)90109-1
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1988VE08      Phys.Rev. C38, 2982 (1988)

W.J.Vermeer, C.S.Lim, R.H.Spear

Mixed Symmetry in the Vibrational Nucleus ¹⁴²Ce

NUCLEAR REACTIONS ¹⁴²Ce(α, α'), E=10-12 MeV; ¹⁴²Ce(¹²C, ¹²C'), E=31-38 MeV; ¹⁴²Ce(¹⁶O, ¹⁶O'), E=44-50 MeV; measured particle spectra following Coulomb excitation. ¹⁴²Ce levels deduced B(λ), quadrupole moment.

doi: 10.1103/PhysRevC.38.2982
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1987FI01      Nucl.Phys. A463, 644 (1987)

L.K.Fifield, D.M.Pringle, W.J.Vermeer

Gamma-Ray Decaying States at High Excitation in ²⁰Ne

NUCLEAR REACTIONS ¹²C(¹²C, α), E=37.1 MeV; measured σ(Eα, E(²⁰Ne)). ²⁰Ne deduced levels, γ-branching ratios.

doi: 10.1016/0375-9474(87)90636-1
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1985BU01      Nucl.Phys. A432, 514 (1985)

S.M.Burnett, A.M.Baxter, S.Hinds, F.Pribac, R.H.Spear, W.J.Vermeer

A Measurement of B(E3; 0⁺ → 3₁^-) and Some E2 Transition Probabilities in ^{132,134,136,138}Ba using Coulomb Excitation

NUCLEAR REACTIONS ^{132,134,136,138}Ba(¹²C, ¹²C'), E=38-42 MeV; measured Coulomb excitation. ^{132,134,136,138}Ba deduced B(E2), B(E3) values. Enriched targets.

doi: 10.1016/0375-9474(85)90257-X
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1984VE03      Phys.Lett. 138B, 365 (1984)

W.J.Vermeer, M.T.Esat, M.P.Fewell, R.H.Spear, A.M.Baxter, S.M.Burnett

An Experimental Verfication of the Validity of the Reorientation-Effect Technique for the Determination of Nuclear Quadrupole Moments

NUCLEAR REACTIONS ²⁰⁸Pb(⁷Li, ⁷Li'), E=16-30 MeV; ¹³⁸Ba(⁷Li, ⁷Li'), E=12.5-22 MeV; measured Coulomb excitation reorientation effect. ⁷Li level deduced B(E2), quadrupole moment.

doi: 10.1016/0370-2693(84)91918-X
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1984VE07      Aust.J.Phys. 37, 123 (1984)

W.J.Vermeer, M.T.Esat, J.A.Kuehner, R.H.Spear, A.M.Baxter, S.Hinds

Coulomb Excitation of the 2.615 MeV (3^-) and 4.086 MeV (2⁺) States of ²⁰⁸Pb

NUCLEAR REACTIONS ²⁰⁸Pb(¹²C, ¹²C'), E=53-58 MeV; ²⁰⁸Pb(¹⁶O, ¹⁶O'), E=57-76 MeV; measured Coulomb excitation. ²⁰⁸Pb levels deduced B(λ), quadrupole moment.

doi: 10.1071/PH840123
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1984VE08      Aust.J.Phys. 37, 273 (1984)

W.J.Vermeer, A.M.Baxter, S.M.Burnett, M.T.Esat, M.P.Fewell, R.H.Spear

Coulomb Excitation of ⁷Li

NUCLEAR REACTIONS ²⁰⁸Pb, ¹³⁸Ba(⁷Li, ⁷Li'), E=12.5-30 MeV; measured σ(E(⁷Li)), Coulomb excitation. ⁷Li deduced GDR excitation, B(E2), ground state static electric quadrupole moment.

doi: 10.1071/PH840273
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1983SP02      Phys.Lett. 128B, 29 (1983)

R.H.Spear, W.J.Vermeer, M.T.Esat, J.A.Kuehner, A.M.Baxter, S.Hinds

An Improved Determination of the Quadrupole Moment of the First Excited State of ²⁰⁸Pb

NUCLEAR REACTIONS ²⁰⁸Pb(¹²C, ¹²C'), E=75, 90 MeV; ²⁰⁸Pb(¹⁶O, ¹⁶O'), E=80-171.6 MeV; analyzed Coulomb excitation data. ²⁰⁸Pb level deduced static quadrupole moment, B(E3).

doi: 10.1016/0370-2693(83)90067-9
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1983VE01      Phys.Lett. 122B, 23 (1983)

W.J.Vermeer, M.T.Esat, J.A.Kuehner, R.H.Spear, A.M.Baxter, S.Hinds

Electric Quadrupole Moment of the First Excited State of ¹²C

NUCLEAR REACTIONS ²⁰⁸Pb(¹²C, ¹²C'), E=53, 54, 56, 58 MeV; ²⁰⁸Pb(¹⁶O, ¹⁶O'), E=72 MeV; measured σ(E(¹²C)), σ(E(¹⁶O)), projectile Coulomb excitation. ¹²C level deduced quadrupole moment.

doi: 10.1016/0370-2693(83)91160-7
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1983VE03      Phys.Rev. C28, 432 (1983)

W.J.Vermeer, R.K.Bhalla, A.R.Poletti

Mean Life of ¹⁰B(718 keV) and Its Role in Determining the Giant Dipole Resonance Contribution to Coulomb Excitation of ¹⁰B

NUCLEAR REACTIONS ¹⁰B(p, p'), E=4.5 MeV; measured pγ-coin. ¹⁰B level deduced T_1/2. Enriched target.

doi: 10.1103/PhysRevC.28.432
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1982KU14      Phys.Lett. 115B, 437 (1982)

J.A.Kuehner, R.H.Spear, W.J.Vermeer, M.T.Esat, A.M.Baxter, S.Hinds

A Measurement of the Giant-Dipole-Resonance Contribution to the Coulomb Excitation of ¹⁷O

NUCLEAR REACTIONS ²⁰⁸Pb(¹⁷O, ¹⁷O'), E=66-88 MeV; measured σ(E(¹⁷O)), projectile Coulomb excitation probability. ¹⁷O level deduced GDR contribution parameter. Modified hydrodynamic model. ²⁰⁸Pb(¹⁷O, ¹⁶O), (¹⁷O, ¹⁸O), E=66-88 MeV; measured σ(E(¹⁶O)), σ(E(¹⁸O)).

doi: 10.1016/0370-2693(82)90387-2
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1982VE04      J.Phys.(London) G8, 743 (1982)

W.J.Vermeer, A.R.Poletti

Determination of Partial Decay Widths for the 2^-, 8.87 MeV Level in ¹⁶O

NUCLEAR REACTIONS ¹⁹F(p, α), E=7.4 MeV; measured Eγ, Iγ, αγ-coin. ¹⁶O levels deduced transition strength, γ-branching, δ.

doi: 10.1088/0305-4616/8/5/014
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1982VE05      J.Phys.(London) G8, 851 (1982)

W.J.Vermeer, A.R.Poletti

Branching Ratio for the Isoscalar Transition 2⁺, T=1, 1.95 MeV → 0⁺, T=1, 0.66 MeV in ²²Na

NUCLEAR REACTIONS ¹⁹F(α, n), (α, α'), E=5 MeV; measured γγ-coin. ¹⁹F deduced γ-branching upper limits. ²²Na transition deduced branching ratio, B(E2).

doi: 10.1088/0305-4616/8/6/014
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1982VE09      Nucl.Phys. A389, 185 (1982)

W.J.Vermeer, M.T.Esat, R.H.Spear

Quadrupole Moment of the First Excited State of ³²S

NUCLEAR REACTIONS ²⁰⁸Pb(³²S, ³²S'), E=122-160 MeV; measured Coulomb excitation probabilities. ³²S level deduced quadrupole moment, B(E2). Enriched target.

doi: 10.1016/0375-9474(82)90297-4
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1982VE11      Aust.J.Phys. 35, 283 (1982)

W.J.Vermeer, T.H.Zabel, M.T.Esat, J.A.Kuehner, R.H.Spear, A.M.Baxter

The Giant Dipole Resonance Effect in Coulomb Excitation of ¹⁰B

NUCLEAR REACTIONS ²⁰⁸Pb(¹⁰B, ¹⁰B'), (¹⁰B, ⁹B), (¹⁰B, ¹¹B), E=32-38 MeV; measured σ(E(¹⁰B)), σ(E(⁹B)), σ(E(¹¹B)), projectile Coulomb excitation. ¹⁰B deduced virtual GDR excitation.

doi: 10.1071/PH820283
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