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NSR database version of April 27, 2024.

Search: Author = A.J.Kirwan

Found 14 matches.

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1995KR08      Nucl.Phys. A589, 475 (1995)

R.Krucken, A.Dewald, G.Bohm, P.Sala, J.Altmann, K.O.Zell, P.von Brentano, S.A.Forbes, S.M.Mullins, D.J.Thornley, A.J.Kirwan, P.J.Nolan, P.H.Regan, R.Wadsworth

Lifetimes of Low-Lying States in ¹³²Nd and ¹³⁴Nd

NUCLEAR REACTIONS ¹⁰⁵Pd(³²S, 2n2p), (³²S, xnyp), E=152 MeV; measured recoil distance Doppler shift. ^132,134Nd deduced levels, T_1/2, B(λ). Rotational, interacting boson models, O(6) limit.

doi: 10.1016/0375-9474(95)00183-2
Citations: PlumX Metrics

1992DE28      Nucl.Phys. A545, 822 (1992)

A.Dewald, P.Sala, R.Wrzal, G.Bohm, D.Lieberz, G.Siems, R.Wirowski, K.O.Zell, A.Gelberg, P.von Brentano, P.Nolan, A.J.Kirwan, P.J.Bishop, R.Julin, A.Lampinen, J.Hattula

Electromagnetic Transition Probabilities in ¹³⁰Ce

NUCLEAR REACTIONS ⁹⁸Mo(³⁶S, 4n), E=150 MeV; measured γγ-coin, recoil distance Doppler shift measurement. ¹³⁰Ce levels deduced T_1/2, B(λ). Triaxial rotor model comparison.

doi: 10.1016/0375-9474(92)90531-N
Citations: PlumX Metrics

1992HE03      J.Phys.(London) G18, 99 (1992)

Y.He, M.J.Godfrey, I.Jenkins, A.J.Kirwan, S.M.Mullins, P.J.Nolan, E.S.Paul, R.Wadsworth

Rotational Band Structures in ¹²⁹La

NUCLEAR REACTIONS ⁵¹V(⁸²Se, 4n), E=290 MeV; measured γγ-coin, Iγ, DCO ratios. ¹²⁹La deduced levels, J, π, B(λ) ratios, band structure, configurations. Cranked shell model.

doi: 10.1088/0954-3899/18/1/009
Citations: PlumX Metrics

1992MU09      Phys.Rev. C45, 2683 (1992)

S.M.Mullins, I.Jenkins, Y.-J.He, A.J.Kirwan, P.J.Nolan, J.R.Hughes, R.Wadsworth, R.A.Wyss

Second Minimum Lifetime Measurements in ¹³³Nd and ¹³⁷Nd

NUCLEAR REACTIONS ¹⁰⁵Pd(³²S, 2n2p), E=152 MeV; ¹⁰⁴Ru(³⁶S, 3n), E=145 MeV; measured γγ-coin, DSA, centroid shifts. ^133,137Nd deduced levels, T_1/2, deformed band quadrupole moments. Total Routhian surface calculations.

doi: 10.1103/PhysRevC.45.2683
Citations: PlumX Metrics

1990HE12      J.Phys.(London) G16, 657 (1990)

Y.He, M.J.Godfrey, I.Jenkins, A.J.Kirwan, P.J.Nolan, S.M.Mullins, R.Wadsworth, D.J.G.Love

Quadrupole Moment of the Superdeformed Band in ¹³¹Ce

NUCLEAR REACTIONS ¹⁰⁰Mo(³⁶S, 5n), E=155 MeV; measured γγ-coin, DSA. ¹³¹Ce deduced levels, J, π, mean T_1/2, β₂, superdeformed intrinsic quadrupole moment, band structure.

doi: 10.1088/0954-3899/16/4/016
Citations: PlumX Metrics

1989JE03      Z.Phys. A333, 405 (1989)

I.Jenkins, P.J.Nolan, A.J.Kirwan, M.J.Godfrey, P.J.Bishop, D.J.Thornley, K.L.Ying, R.Wadsworth

Band Structures in ¹³⁴Nd

NUCLEAR REACTIONS ¹⁰⁴Ru(³⁶S, 6n), E=155 MeV; measured γγ-coin. ¹³⁴Nd deduced levels, J, π, band structure.

1989KI01      J.Phys.(London) G15, 85 (1989)

A.J.Kirwan, P.J.Bishop, D.J.G.Love, P.J.Nolan, D.J.Thornley, A.Dewald, A.Gelberg, K.Schiffer, K.O.Zell

Lifetime Measurements in the Yrast Band of ¹³²Ce

NUCLEAR REACTIONS ¹⁰⁰Mo(³⁶S, 4n), E=145 MeV; measured Eγ, Iγ, RDM. ¹³²Ce deduced levels, J, π, T_1/2, B(E2). Ge detectors, BGO escape suppression shields, BGO multiplicity filter, enriched target. Model comparison.

doi: 10.1088/0954-3899/15/1/009
Citations: PlumX Metrics

1988BI03      J.Phys.(London) G14, 995 (1988)

P.J.Bishop, M.J.Godfrey, A.J.Kirwan, P.J.Nolan, D.J.Thornley, J.M.O'Donnell, R.Wadsworth, D.J.G.Love, L.Goettig

Low-Lying States in ^138,140Gd and ¹³⁹Eu

NUCLEAR REACTIONS ⁹²Mo(⁵⁰Cr, 2n2p), (⁵⁰Cr, 3p), E=230 MeV; ⁹²Mo(⁵⁴Fe, 2pα), E=260 MeV; measured E(γ), I(γ), γγ-coin, RDM. ¹³⁸Gd, ¹³⁹Eu deduced levels, T_1/2, B(E2), deformation. ¹⁴⁰Gd deduced levels. Ge detectors, BGO detectors, BGO escape suppression shield, BGO multiplicity filter, enriched targets.

doi: 10.1088/0305-4616/14/7/016
Citations: PlumX Metrics

1988MU22      J.Phys.(London) G14, 1373 (1988)

S.M.Mullins, M.D.Cohler, A.Ghazarian, J.R.Hughes, R.Wadsworth, D.L.Watson, P.J.Bishop, A.J.Kirwan, P.J.Nolan, R.J.Poynter, D.J.G.Love, J.Heese

Collective Bands and Lifetime Measurements in ¹³⁷Pm

NUCLEAR REACTIONS ¹²²Te(¹⁹F, 4n), E=83 MeV; ¹⁰⁸Pd(³²S, 2np), E=152 MeV; measured Eγ, Iγ, γγ-coin, recoil distance. ¹³⁷Pm deduced levels J, π, T_1/2, deformation parameter, B(E2). Ge detectors, BGO escape suppression shields, BGO multiplicity filter, enriched targets. Cranked shell model.

NUCLEAR STRUCTURE ¹³⁷Pm; calculated levels, deformation parameter. Cranked shell model.

doi: 10.1088/0305-4616/14/11/009
Citations: PlumX Metrics

1987BI11      Fizika(Zagreb) 19, Supplement 1, 29 (1987)

P.J.Bishop, A.N.James, A.J.Kirwan, P.J.Nolan, D.J.Thornley, K.L.Ying, R.Wadsworth, S.Mullins, D.J.G.Love

A Study of Nuclei in the Mass 137 Region of the Light Rare Earths

NUCLEAR REACTIONS ⁶⁶Zn(⁷⁴Se, X), E=290 MeV; measured γ-spectra. ¹³⁶Pm, ¹³⁸Eu deduced transitions. ¹³⁷Eu, ¹³⁷Sm deduced levels, J, π, γ-branching, band characteristics.

1987KI02      Phys.Rev.Lett. 58, 467 (1987)

A.J.Kirwan, G.C.Ball, P.J.Bishop, M.J.Godfrey, P.J.Nolan, D.J.Thornley, D.J.G.Love, A.H.Nelson

Mean-Lifetime Measurements within the Superdeformed Second Minimum in ¹³²Ce

NUCLEAR REACTIONS ¹⁰⁰Mo(³⁶S, 4n), E=150 MeV; measured Eγ, Iγ, DSA. ¹³²Ce deduced levels, J, π, rotational band structure, T_1/2, deformation, superdeformation. Bismuth germanate detectors.

RADIOACTIVITY ¹³²Ce(EC) [from ¹⁰⁰Mo(³⁶S, 4n), E=150 MeV]; measured Eγ, Iγ, DSA. ¹³²Ce deduced levels, J, π, rotational band structure, T_1/2, deformation, superdeformation. Bismuth germanate detectors.

doi: 10.1103/PhysRevLett.58.467
Citations: PlumX Metrics

1987MU12      J.Phys.(London) G13, L201 (1987)

S.M.Mullins, R.Wadsworth, J.M.O'Donnell, P.J.Nolan, A.J.Kirwan, P.J.Bishop, M.J.Godfrey, D.J.G.Love

First Observation of the i_13/2 Neutron Orbital in the A = 130 Region: Spectroscopy of ¹³⁵Sm

NUCLEAR REACTIONS ⁹²Mo(⁴⁶Ti, n2p), E=210 MeV; ⁶⁴Zn(⁷⁴Se, n2p), E=290 MeV; measured Eγ, Iγ, γγ-, γ(recoil nucleus)-coin, γγ(θ). ¹³⁵Sm deduced levels, J, π, γ-branching, configuration, band structure. Ge detectors, bismuth germanate suppression shields, recoil separator, enriched targets. Cranked shell model.

doi: 10.1088/0305-4616/13/9/006
Citations: PlumX Metrics

1987SI16      J.Phys.(London) G13, L235 (1987)

J.Simpson, M.A.Riley, A.N.James, A.R.Mokhtar, H.W.Cranmer-Gordon, P.D.Forsyth, A.J.Kirwan, D.Howe, J.D.Morrison, J.F.Sharpey-Schafer

Spin 50(h-bar) in ¹⁶⁰Er and the Boundary between Collective and Non-Collective Rotation in the Light Er Isotopes

NUCLEAR REACTIONS ¹¹⁶Cd(⁴⁸Ca, 4n), E=210 MeV; measured γγ-coin. ¹⁶⁰Er deduced levels, J, π, band structure, γ-branching.

doi: 10.1088/0305-4616/13/10/003
Citations: PlumX Metrics

1986YI01      J.Phys.(London) G12, L211 (1986)

K.L.Ying, P.J.Bishop, A.N.James, A.J.Kirwan, D.J.G.Love, T.P.Morrison, P.J.Nolan, D.C.B.Watson, K.A.Connell, A.H.Nelson, J.Simpson

Experimental Investigation of the Structure of ¹²⁴Ce

NUCLEAR STRUCTURE ^{124,126,128,130,138}Ce; calculated deformation, potential energy surfaces.

NUCLEAR REACTIONS ⁵⁴Fe(⁷⁴Se, 2n2p), E=300 MeV; measured Eγ, Iγ, γγ-, γ(residue)-coin. ¹²⁴Ce deduced transitions, possible level J, π, deformation.

doi: 10.1088/0305-4616/12/9/004
Citations: PlumX Metrics