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NSR database version of April 11, 2024.

Search: Author = H.R.Andrews

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1998CA26      Phys.Rev. C58, 808 (1998)

J.A.Cameron, J.L.Rodriguez, J.Jonkman, G.Hackman, S.M.Mullins, C.E.Svensson, J.C.Waddington, L.Yao, T.E.Drake, M.Cromaz, J.H.DeGraaf, G.Zwartz, H.R.Andrews, G.Ball, A.Galindo-Uribarri, V.P.Janzen, D.C.Radford, D.Ward

Spectroscopy of Cross-Conjugate Nuclei 46Ti - 50Cr and 47V - 49Cr Near the f7/2-Shell Band Termination

NUCLEAR REACTIONS 28Si(28Si, 2p2α), (28Si, p2α), (28Si, 2pα), (28Si, n2pα), E=125 MeV; measured Eγ, Iγ, γγ-coin, DSA. 49,50Cr, 47V, 46Ti deduced high-spin levels, J, π, T1/2, B(M1), B(E2).

doi: 10.1103/PhysRevC.58.808
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1996CA38      Phys.Lett. 387B, 266 (1996)

J.A.Cameron, J.Jonkman, C.E.Svensson, M.Gupta, G.Hackman, D.Hyde, S.M.Mullins, J.L.Rodriguez, J.C.Waddington, A.Galindo-Uribarri, H.R.Andrews, G.C.Ball, V.P.Janzen, D.C.Radford, D.Ward, T.E.Drake, M.Cromaz, J.DeGraaf, G.Zwartz

Collective Properties of 48Cr at High Spin

NUCLEAR REACTIONS Si(28Si, xpyα), E=125 MeV; measured (particle)γγ-coin, DCO, DSA. 48Cr deduced high-spin levels, J, π, B(λ).

doi: 10.1016/0370-2693(96)01039-8
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1996GA17      Phys.Rev. C54, 1057 (1996)

A.Galindo-Uribarri, D.Ward, H.R.Andrews, G.C.Ball, D.C.Radford, V.P.Janzen, S.M.Mullins, J.C.Waddington, A.V.Afanasjev, I.Ragnarsson

Lifetime Measurements of Strongly Deformed Rotational Bands in 133Pm

NUCLEAR REACTIONS 96Ru(40Ca, X), E=176 MeV; measured γγ-coin, DSA. 133Pm deduced high-spin levels, J, π, δ, B(λ), band structure, T1/2, configuration, deformation parameters. Models comparison.

doi: 10.1103/PhysRevC.54.1057
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1996PA13      Phys.Rev. C53, 2520 (1996)

E.S.Paul, H.R.Andrews, T.E.Drake, J.DeGraaf, V.P.Janzen, S.Pilotte, D.C.Radford, D.Ward

Yrast Band in Neutron-Deficient 115Xe

NUCLEAR REACTIONS 60Ni(58Ni, n2p), E=250 MeV; measured γγ-coin. 115Xe deduced high-spin levels, J, π.

doi: 10.1103/PhysRevC.53.2520
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1996WA11      Nucl.Phys. A600, 88 (1996)

D.Ward, H.R.Andrews, G.C.Ball, A.Galindo-Uribarri, V.P.Janzen, T.Nakatsukasa, D.C.Radford, T.E.Drake, J.DeGraaf, S.Pilotte, Y.R.Shimizu

Rotational Bands in 238U

NUCLEAR REACTIONS 238U(209Bi, 209Bi'), E=1.13, 1.33 GeV; measured Eγ, Iγ, γγ-coin following Coulomb excitation. 238U deduced levels, J, π, K, band structure. Compton suppressed hyperpure Ge detector array, 4π-BGO ball. Cranked RPA calculation.

doi: 10.1016/0375-9474(95)00490-4
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1995FL01      Nucl.Phys. A584, 373 (1995)

S.Flibotte, G.Hackman, I.Ragnarsson, Ch.Theisen, H.R.Andrews, G.C.Ball, C.W.Beausang, F.A.Beck, G.Belier, M.A.Bentley, T.Byrski, D.Curien, G.de France, D.Disdier, G.Duchene, B.Haas, D.S.Haslip, V.P.Janzen, P.M.Jones, B.Kharraja, J.A.Kuehner, J.C.Lisle, J.C.Merdinger, S.M.Mullins, E.S.Paul, D.Prevost, D.C.Radford, V.Rauch, J.F.Smith, J.Styczen, P.J.Twin, J.P.Vivien, J.C.Waddington, D.Ward, K.Zuber

Multi-Particle Excitations in the Superdeformed 149Gd Nucleus

NUCLEAR REACTIONS 124Sn(30Si, 5n), E=158 MeV; measured Eγ, Iγ, γn-coin. 149Gd deduced high-spin levels, J, π, superdeformed bands. Compton-suppressed hyperpure Ge detector array. Nilsson-Strutinsky cranking model calculations.

doi: 10.1016/0375-9474(94)00450-2
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1995MU11      Phys.Rev. C52, 99 (1995)

S.M.Mullins, S.Flibotte, G.Hackman, J.L.Rodriguez, J.C.Waddington, A.V.Afanasjev, I.Ragnarsson, H.R.Andrews, A.Galindo-Uribarri, V.P.Janzen, D.C.Radford, D.Ward, M.Cromaz, J.DeGraaf, T.E.Drake, S.Pilotte

Strong Population of a Superdeformed Band in 142Eu

NUCLEAR REACTIONS 120Sn(27Al, 5n), E=152 MeV; measured γγ-coin, Eγ, Iγ. 142Eu deduced levels, J, π, superdeformed band.

doi: 10.1103/PhysRevC.52.99
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1995PA30      Phys.Rev. C52, 1691 (1995)

E.S.Paul, H.R.Andrews, T.E.Drake, J.DeGraaf, V.P.Janzen, S.Pilotte, D.C.Radford, D.Ward

High-Spin States in Doubly Odd 114I

NUCLEAR REACTIONS 60Ni(58Ni, n3p), E=250 MeV; measured Eγ, Iγ, γγ(θ). 114I deduced high-spin levels, J, π, configuration. Quasiparticle structures. Cranked Woods-Saxon calculations.

doi: 10.1103/PhysRevC.52.1691
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1994CL01      Phys.Rev. C50, 84 (1994)

R.M.Clark, R.Wadsworth, H.R.Andrews, C.W.Beausang, M.Bergstrom, S.Clarke, E.Dragulescu, T.Drake, P.J.Dagnall, A.Galindo-Uribarri, G.Hackman, K.Hauschild, I.M.Hibbert, V.P.Janzen, P.M.Jones, R.W.MacLeod, S.M.Mullins, E.S.Paul, D.C.Radford, A.Semple, J.F.Sharpey-Schafer, J.Simpson, D.Ward, G.Zwartz

Recoil Distance Lifetime Measurements of States in the Oblate Dipole Bands of 197,198Pb

NUCLEAR REACTIONS 176Yb(26Mg, xn), E=125 MeV; 186W(18O, xn), E=113 MeV; measured γγ-coin, DSA, Eγ. 197,198Pb deduced high-spin levels B(λ), T1/2, quadrupole moments, γ-branching ratio. Donau-Frauendorf model, tilted axis cranking model. Enriched targets, Ge detection, BGO suppression shields.

doi: 10.1103/PhysRevC.50.84
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1994MU16      Phys.Rev. C50, R2261 (1994)

S.M.Mullins, N.C.Schmeing, S.Flibotte, G.Hackman, J.L.Rodriguez, J.C.Waddington, L.Yao, H.R.Andrews, A.Galindo-Uribarri, V.P.Janzen, D.C.Radford, D.Ward, J.DeGraaf, T.E.Drake, S.Pilotte, E.S.Paul

Proton Configurations and Pairing Correlations at the N = 80 Superdeformed Shell Closure: Study of 145Tb

NUCLEAR REACTIONS 112Sn(37Cl, 2n2p), E=187 MeV; 118Sn(31P, 4n), E=160 MeV; measured γγ(charged particle)-.γγ-coin, Eγ, Iγ. 145Tb deduced superdeformed rotational band, high-spin levels, J, π. Cranked Woods-Saxon-Strutinsky calculations. Hyperpure Ge detectors, BGO suppression shields, BGO total energy, multiplicity filter, CsI detectors coupled to photodiodes, enriched targets.

doi: 10.1103/PhysRevC.50.R2261
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1994PA21      Phys.Rev. C50, R534 (1994)

E.S.Paul, H.R.Andrews, T.E.Drake, J.DeGraaf, V.P.Janzen, S.Pilotte, D.C.Radford, D.Ward

Evidence for Octupole Correlations at High Spins in Neutron-Deficient 110Te

NUCLEAR REACTIONS 58Ni(58Ni, 2pα), E=250 MeV; measured Eγ, Iγ, γγ-coin. 110Te deduced high-spin levels, J, π, γ-multipolarity, B(λ), ratios.

doi: 10.1103/PhysRevC.50.R534
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1994PA22      Phys.Rev. C50, 698 (1994)

E.S.Paul, C.W.Beausang, S.A.Forbes, S.J.Gale, A.N.James, P.M.Jones, M.J.Joyce, H.R.Andrews, V.P.Janzen, D.C.Radford, D.Ward, R.M.Clark, K.Hauschild, I.M.Hibbert, R.Wadsworth, R.A.Cunningham, J.Simpson, T.Davinson, R.D.Page, P.J.Sellin, P.J.Woods, D.B.Fossan, D.R.LaFosse, H.Schnare, M.P.Waring, A.Gizon, J.Gizon, T.E.Drake, J.DeGraaf, S.Pilotte

Deformed Intruder Band in 112Te: First evidence for rotational behavior in the tellurium isotopes

NUCLEAR REACTIONS 58,60Ni(58Ni, 4p), (58Ni, 2pα), E=240, 250 MeV; measured Eγ, Iγ, Iγ(θ), γγ-, γ(recoil)-coin. 110,112Te deduced high-spin levels J, π, band structure. Cranked Woods-Saxon calculations.

doi: 10.1103/PhysRevC.50.698
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1994PA23      Phys.Rev. C50, 741 (1994)

E.S.Paul, H.R.Andrews, V.P.Janzen, D.C.Radford, D.Ward, T.E.Drake, J.DeGraaf, S.Pilotte, I.Ragnarsson

Multiple Band Structures at High Angular Momentum in 115I: Towards unfavored band termination

NUCLEAR REACTIONS 60Ni(58Ni, 3p), E=250 MeV; measured Eγ, Iγ, γγ(θ). 115I deduced high-spin levels, J, π, rotational bands. Band termination Nilsson-Strutinski calculations.

doi: 10.1103/PhysRevC.50.741
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1994WA16      Phys.Rev. C50, 483 (1994)

R.Wadsworth, H.R.Andrews, C.W.Beausang, R.M.Clark, J.DeGraaf, D.B.Fossan, A.Galindo-Uribarri, I.M.Hibbert, K.Hauschild, J.R.Hughes, V.P.Janzen, D.R.LaFosse, S.M.Mullins, E.S.Paul, L.Persson, S.Pilotte, D.C.Radford, H.Schnare, P.Vaska, D.Ward, J.N.Wilson, I.Ragnarsson

Rotational Structures in 106Sn: A new form of band termination ( Question )

NUCLEAR REACTIONS 54Fe(58Ni, 2pα), E=243 MeV; measured Eγ, Iγ, γγ-coin. 106Sn deduced high-spin levels, J, π, band structure. Cranked Nilsson model calculation.

doi: 10.1103/PhysRevC.50.483
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1993FL03      Phys.Rev.Lett. 71, 688 (1993)

S.Flibotte, G.Hackman, Ch.Theisen, H.R.Andrews, G.C.Ball, C.W.Beausang, F.A.Beck, G.Belier, M.A.Bentley, T.Byrski, D.Curien, G.de France, D.Disdier, G.Duchene, P.Fallon, B.Haas, V.P.Janzen, P.M.Jones, B.Kharraja, J.A.Kuehner, J.C.Lisle, J.C.Merdinger, S.M.Mullins, E.S.Paul, D.Prevost, D.C.Radford, V.Rauch, J.F.Smith, J.Styczen, P.J.Twin, J.P.Vivien, J.C.Waddington, D.Ward, K.Zuber

Multiparticle Excitations and Identical Bands in Superdeformed 149Gd Nucleus

NUCLEAR REACTIONS 124Sn(30Si, 5n), E=158 MeV; measured γγ-coin. 149Gd deduced levels, J, π, superdeformed bands.

doi: 10.1103/PhysRevLett.71.688
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1993FL07      Phys.Rev.Lett. 71, 4299 (1993)

S.Flibotte, H.R.Andrews, G.C.Ball, C.W.Beausang, F.A.Beck, G.Belier, T.Byrski, D.Curien, P.J.Dagnall, G.de France, D.Disdier, G.Duchene, Ch.Finck, B.Haas, G.Hackman, D.S.Haslip, V.P.Janzen, B.Kharraja, J.C.Lisle, J.C.Merdinger, S.M.Mullins, W.Nazarewicz, D.C.Radford, V.Rauch, H.Savajols, J.Styczen, Ch.Theisen, P.J.Twin, J.P.Vivien, J.C.Waddington, D.Ward, K.Zuber, S.Aberg

ΔI = 4 Bifurcation in a Superdeformed Band: Evidence for a C4 symmetry

NUCLEAR REACTIONS 124Sn(30Si, 5n), E=158 MeV; measured Eγ, Iγ, γγ-coin. 149Gd deduced yrast superdeformed band moment of inertia, evidence for fourfold rotational symmetry.

doi: 10.1103/PhysRevLett.71.4299
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1993GA10      Phys.Rev.Lett. 71, 231 (1993)

A.Galindo-Uribarri, H.R.Andrews, G.C.Ball, T.E.Drake, V.P.Janzen, J.A.Kuehner, S.M.Mullins, L.Persson, D.Prevost, D.C.Radford, J.C.Waddington, D.Ward, R.Wyss

First Evidence for the Hyperdeformed Nuclear Shape at High Angular Momentum

NUCLEAR REACTIONS 120Sn(37Cl, xnp), E=187 MeV; measured γγ-, γγ(particle)-coin. 152,153Dy deduced levels, γ-multipolarity, band structure, moment of inertia, hyperdeformation evidence.

doi: 10.1103/PhysRevLett.71.231
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1993HA19      Nucl.Phys. A561, 251 (1993)

B.Haas, V.P.Janzen, D.Ward, H.R.Andrews, D.C.Radford, D.Prevost, J.A.Kuehner, A.Omar, J.C.Waddington, T.E.Drake, A.Galindo-Uribarri, G.Zwartz, S.Flibotte, P.Taras, I.Ragnarsson

Studies of Superdeformation in the Gadolinium Nuclei

NUCLEAR REACTIONS 120,122,124Sn(28Si, xn), (29Si, xn), (30Si, xn), E=155 MeV; measured Eγ, Iγ, γγ-coin, DCO ratios. 145,146,147,148,149Gd deduced, γ-multipliplicities, J, π, levels, superdeformed bands. Compton-suppressed hyperpure Ge detector array, 4π-bismuth germanate ball. Cranked shell-model-Strutinsky calculations.

doi: 10.1016/0375-9474(93)90153-O
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1993JA04      Phys.Rev.Lett. 70, 1065 (1993)

V.P.Janzen, H.R.Andrews, B.Haas, D.C.Radford, D.Ward, A.Omar, D.Prevost, M.Sawicki, P.Unrau, J.C.Waddington, T.E.Drake, A.Galindo-Uribarri, R.Wyss

The Proton h11/2 Intruder Orbital: Evidence for collectivity and a strong proton-neutron interaction

NUCLEAR REACTIONS 94Mo(23Na, 2n2p), E=117 MeV; measured γγ-coin, sum spectra. 113Sb deduced levels, J, π, configuration, band structure, shape features.

doi: 10.1103/PhysRevLett.70.1065
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1993MU05      Phys.Rev. C47, R2447 (1993)

S.M.Mullins, A.Omar, L.Persson, D.Prevost, J.C.Waddington, H.R.Andrews, G.C.Ball, A.Galindo-Uribarri, V.P.Janzen, D.C.Radford, D.Ward, T.E.Drake, D.B.Fossan, D.LaFosse, P.Vaska, M.Waring, R.Wadsworth

Perturbed Alignments within an i13/2 Neutron Intruder Band in 141Gd

NUCLEAR REACTIONS 112Sn(32S, n2p), E=155 MeV; 112Sn(33S, 2n2p), E=170 MeV; measured γγ-, γγ(charged particle)-coin. 141Gd deduced levels, J, π, configuration, alignment features. Cranked shell model.

doi: 10.1103/PhysRevC.47.R2447
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1993WA13      Nucl.Phys. A559, 461 (1993)

R.Wadsworth, H.R.Andrews, R.M.Clark, D.B.Fossan, A.Galindo-Uribarri, J.R.Hughes, V.P.Janzen, D.R.LaFosse, S.M.Mullins, E.S.Paul, D.C.Radford, H.Schnare, P.Vaska, D.Ward, J.N.Wilson, R.Wyss

Intruder Bands in 108Sn

NUCLEAR REACTIONS 54Fe(58Ni, 4p), E=243 MeV; measured Eγ-Eγ correlations, DSA. 108Sn deduced levels J, π, T1/2, band structure, quadrupole moment. Comparison with total routhian surface and Woods-Saxon calculations. Enriched targets, Ge detectors, BGO suppression shields.

doi: 10.1016/0375-9474(93)90163-R
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1992FL02      Phys.Rev. C45, R889 (1992)

S.Flibotte, H.R.Andrews, T.E.Drake, A.Galindo-Uribarri, B.Haas, V.J.Janzen, D.Prevost, D.C.Radford, J.Rodriguez, P.Romain, J.P.Vivien, J.C.Waddington, D.Ward, G.Zwartz

Entrance-Channel Effects in the Population of Superdeformed Bands in 147, 148Gd

NUCLEAR REACTIONS 124Sn(29Si, xn), 122Sn(30Si, xn), E=155 MeV; 76Ge(76Ge, xn), E=319 MeV; measured Eγ, Iγ, γγ-coin. 147,148Gd deduced superdeformed bands polulation intensity. Enriched targets, Compton-suppressed hyperpure Ge array.

doi: 10.1103/PhysRevC.45.R889
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1992RA17      Nucl.Phys. A545, 665 (1992)

D.C.Radford, H.R.Andrews, G.C.Ball, D.Horn, D.Ward, F.Banville, S.Flibotte, S.Monaro, S.Pilotte, P.Taras, J.K.Johansson, D.Tucker, J.C.Waddington, M.A.Riley, G.B.Hagemann, I.Hamamoto

Multiple Band Structure and Band Termination in 157Ho Towards Complete High-Spin Spectroscopy

NUCLEAR REACTIONS 124Sn(37Cl, 4n), E=155, 165 MeV; measured Eγ, γγ-coin, Iγ(θ, φ). 157Ho deduced levels, Iγ, J, π, rotational band characteristics, band-mixing interaction strengths.

doi: 10.1016/0375-9474(92)90298-X
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1992VI03      Phys.Lett. 278B, 407 (1992)

J.P.Vivien, D.Balouka, B.Haas, H.R.Andrews, D.C.Radford, D.Ward, V.P.Janzen, D.Prevost, J.C.Waddington, S.Flibotte, S.Pilotte, P.Taras, A.Galindo-Uribarri, H.Kluge, S.Aberg

Radiation Originating from Unresolved Superdeformed States in 149Gd

NUCLEAR REACTIONS 124Sn(30Si, xn), E=155 MeV; measured correlated γγ-coincidence matrix, Iγ. 149Gd deduced unresolved superdeformed states.

doi: 10.1016/0370-2693(92)90576-P
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1992WA07      Nucl.Phys. A539, 547 (1992)

D.Ward, H.R.Andrews, V.P.Janzen, D.C.Radford, J.K.Johansson, D.Prevost, J.C.Waddington, A.Galindo-Uribarri, T.E.Drake

Gamma-Ray Spectroscopy of 127Ba at Moderate Spins

NUCLEAR REACTIONS 117Sn(13C, 3n), E=60 MeV; measured Eγ, Iγ, γγ-coin, DCO ratios. 127Ba deduced levels, J, δ. Enriched targets, Compton-suppressed hyperpure Ge detector array, 4π-bismuth germanate ball. Cranked-shell model calculations, nuclear triaxial shapes.

doi: 10.1016/0375-9474(92)90293-S
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1991BL15      Phys.Rev.Lett. 66, 3121 (1991)

D.J.Blumenthal, C.J.Lister, P.Chowdhury, B.Crowell, P.J.Ennis, Ch.Winter, T.Drake, A.Galindo-Uribarri, G.Zwartz, H.R.Andrews, G.C.Ball, D.Radford, D.Ward, V.P.Janzen

Search for Nuclear-Structure Effects in Proton Evaporation Spectra

NUCLEAR REACTIONS 58Ni(29Si, n2p), (29Si, 2pα), (28Si, xnypzα), E=110 MeV; measured proton spectra, Doppler shifts, pp-, γγ-, pγ-, αp-coin; deduced channel, angular momentum dependences.

doi: 10.1103/PhysRevLett.66.3121
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1991CH40      Phys.Rev.Lett. 67, 2950 (1991)

P.Chowdhury, C.J.Lister, D.Vretenar, Ch.Winter, V.P.Janzen, H.R.Andrews, D.J.Blumenthal, B.Crowell, T.Drake, P.J.Ennis, A.Galindo-Uribarri, D.Horn, J.K.Johansson, A.Omar, S.Pilotte, D.Prevost, D.Radford, J.C.Waddington, D.Ward

Large B(M1) Staggering at High Spins in 86Zr: Broken boson pairs in the four-quasiparticle regime

NUCLEAR REACTIONS 60Ni(30Si, 2n2p), E=135 MeV; measured DSA, γγ energy correlations, γγ-coin, γγ(θ). 86Zr deduced levels, J, π, B(λ), T1/2, band structure. Interacting boson model, broken pair approximation.

doi: 10.1103/PhysRevLett.67.2950
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1991FL02      Nucl.Phys. A530, 187 (1991)

S.Flibotte, B.Haas, F.Banville, J.Gascon, P.Taras, H.R.Andrews, D.C.Radford, D.Ward, J.C.Waddington

High-Spin States in 149Gd

NUCLEAR REACTIONS 124Sn(30Si, 5n), E=150 MeV; measured Eγ, Iγ, γγ-coin, Iγ(θ), oriented nuclei. 149Gd deduced levels, J, δ. Enriched targets, Compton-suppressed hyperpure Ge detector array, 4π BGO ball. Deformed Woods-Saxon potential calculations.

doi: 10.1016/0375-9474(91)90762-U
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1991FL03      Nucl.Phys. A531, 205 (1991)

S.Flibotte, B.Haas, P.Taras, H.R.Andrews, D.C.Radford, D.Ward

Spin Dependence of the Giant Dipole Resonance in Gd Isotopes

NUCLEAR REACTIONS 124Sn(30Si, xn), E=150 MeV; measured Eγ, Iγ, γγ-coin, spin orientation, γ(θ). 148,149,150Gd deduced deformation. Enriched targets, Compton-suppressed hyperpure Ge detector array, 4π BGO ball.

doi: 10.1016/0375-9474(91)90578-T
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1991WA20      Nucl.Phys. A529, 315 (1991)

D.Ward, V.P.Janzen, H.R.Andrews, D.C.Radford, G.C.Ball, D.Horn, J.C.Waddington, J.K.Johansson, F.Banville, J.Gascon, S.Monaro, N.Nadon, S.Pilotte, D.Prevost, P.Taras, R.Wyss

Gamma-Ray Spectroscopy of 126Ba

NUCLEAR REACTIONS 96Zr(34S, 4n), E=155 MeV; 116Sn(13C, 3n), E=56 MeV; measured Eγ, Iγ, γγ-coin, Iγ-spin orientation correlation, DCO ratios. 126Ba deduced levels, J, δ. Enriched targets, Compton-suppressed hyperpure Ge detector array, 4π-bismuth germanate ball. Cranked shell model calculations, total routhian surface calculations.

doi: 10.1016/0375-9474(91)90798-B
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1990HA31      Phys.Rev. C42, R1817 (1990)

B.Haas, D.Ward, H.R.Andrews, G.C.Ball, T.E.Drake, S.Flibotte, A.Galindo-Uribarri, V.P.Janzen, J.K.Johansson, H.Kluge, J.Kuehner, A.Omar, S.Pilotte, D.Prevost, J.Rodriguez, D.C.Radford, P.Taras, J.P.Vivien, J.C.Waddington, S.Aberg

Observation of Excited Proton and Neutron Configurations in the Superdeformed 149Gd Nucleus

NUCLEAR REACTIONS 124Sn(30Si, 5n), E=155 MeV; 124Sn(31P, 5n), E=156 MeV; measured γ-spectra, γγ-coin. 149Gd deduced levels, J, π, superdeformed band structure.

doi: 10.1103/PhysRevC.42.R1817
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1990PI11      Nucl.Phys. A514, 545 (1990)

S.Pilotte, S.Flibotte, S.Monaro, N.Nadon, D.Prevost, P.Taras, H.R.Andrews, D.Horn, V.P.Janzen, D.C.Radford, D.Ward, J.K.Johansson, J.C.Waddington, T.E.Drake, A.Galindo-Uribarri, R.Wyss

Rotational Bands and Shape Changes in 124Ba

NUCLEAR REACTIONS 94Zr(34S, 4n), E=145 MeV; 110Cd(16O, 2n), E=60 MeV; measured Eγ, Iγ, γγ-coin, Iγ(θ), oriented nuclei. 124Ba deduced levels, J, π, δ. Enriched target, Compton-suppressed Ge detector array, 4π bismuth germanate ball. Total routhian surface calculations, cranked shell-model.

doi: 10.1016/0375-9474(90)90155-F
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1989JO04      Phys.Rev.Lett. 63, 2200 (1989)

J.K.Johansson, H.R.Andrews, T.Bengtsson, A.Djaafri, T.E.Drake, S.Flibotte, A.Galindo-Uribarri, D.Horn, V.P.Janzen, J.A.Kuehner, S.Monaro, N.Nadon, S.Pilotte, D.Prevost, D.C.Radford, I.Ragnarsson, P.Taras, A.Tehami, J.C.Waddington, D.Ward, S.Aberg

Multiple Superdeformed Bands in 153Dy

NUCLEAR REACTIONS 124Sn(34S, 5n), E not given; measured γγγ-coin, sum spectra. 153Dy deduced levels, J, π, moment of inertia, band structure, deformation, superdeformation features.

doi: 10.1103/PhysRevLett.63.2200
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1989TA12      Phys.Lett. 222B, 357 (1989)

P.Taras, S.Flibotte, J.Gascon, B.Haas, S.Pilotte, D.C.Radford, D.Ward, H.R.Andrews, F.Banville, J.K.Johansson, J.C.Waddington

Additional Superdeformed States in the Continuum of 149Gd

NUCLEAR REACTIONS 124Sn(30Si, 5n), E=150 MeV; analyzed data. 149Gd deduced levels, J, π, superdeformation.

doi: 10.1016/0370-2693(89)90323-7
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1988HA02      Phys.Rev.Lett. 60, 503 (1988)

B.Haas, P.Taras, S.Flibotte, F.Banville, J.Gascon, S.Cournoyer, S.Monaro, N.Nadon, D.Prevost, D.Thibault, J.K.Johansson, D.M.Tucker, J.C.Waddington, H.R.Andrews, G.C.Ball, D.Horn, D.C.Radford, D.Ward, C.St.Pierre, J.Dudek

Superdeformed Band up to Spin ≈ (127/2) in 149Gd

NUCLEAR REACTIONS 124Sn(30Si, 5n), E=150 MeV; measured Eγ, Iγ, Doppler shift fraction. 149Gd deduced levels, J, π, moment of inertia superdeformed band quadrupole moment.

doi: 10.1103/PhysRevLett.60.503
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1988TA20      Phys.Rev.Lett. 61, 1348 (1988)

P.Taras, S.Flibotte, J.Gascon, B.Haas, S.Pilotte, D.C.Radford, D.Ward, H.R.Andrews, G.C.Ball, F.Banville, S.Cournoyer, D.Horn, J.K.Johansson, S.Monaro, N.Nadon, D.Prevost, C.Pruneau, D.Thibault, D.M.Tucker, J.C.Waddington

Feeding of Discrete-Line Superdeformed Bands at Very High Spin

NUCLEAR REACTIONS 124Sn(30Si, 4n), (30Si, 5n), (30Si, 6n), (30Si, xn), E=140-160 MeV; measured γ yields, γ sum spectra, multiplicities. 149Gd deduced superdeformed band features.

doi: 10.1103/PhysRevLett.61.1348
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1987GA09      Nucl.Phys. A467, 539 (1987)

J.Gascon, P.Taras, D.C.Radford, D.Ward, H.R.Andrews, F.Banville

Change in Triaxiality in 159Tm

NUCLEAR REACTIONS 128Te(35Cl, xn), E=150 MeV; measured recoil distance, Eγ, Iγ. 158,159Tm deduced levels, J, π, T1/2, B(E2), B(M1), transition quandrupole moments, nuclear shape.

doi: 10.1016/0375-9474(87)90544-6
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1987GA12      Nucl.Phys. A470, 230 (1987)

J.Gascon, F.Banville, P.Taras, D.Ward, T.K.Alexander, H.R.Andrews, G.C.Ball, D.Horn, D.C.Radford, J.C.Waddington, A.Christy

Constant Transition Quadrupole Moments in 174Os up to Spin 20(h-bar)

NUCLEAR REACTIONS 51V(127I, 4n), E ≈ 610 MeV; measured Eγ, Iγ, recoil distance. 174Os deduced levels, J, π, T1/2, yrast level transition quadrupole moments, B(E2).

doi: 10.1016/0375-9474(87)90130-8
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1987GA14      Nucl.Phys. A472, 558 (1987)

J.Gascon, P.Taras, P.van Esbroek, H.R.Andrews, D.C.Radford, D.Ward, A.Christy

Shape Variations of 174W below the i13/2 Neutron Backbend

NUCLEAR REACTIONS 159Tb(19F, 4n), E=85 MeV; measured Eγ, Iγ, recoil distance. 174W deduced levels, T1/2, J, π, B(λ), transition quadrupole moment.

doi: 10.1016/0375-9474(87)90045-5
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1986HA28      Nucl.Phys. A456, 317 (1986)

E.Hammaren, O.Hausser, H.R.Andrews, P.Taras, A.Larabee

136Xe(13C, 4nγ) Reaction Study of 145Nd

NUCLEAR REACTIONS 136Xe(13C, 4nγ), E=49-60 MeV; measured E(γ), I(γ)(E), I(γ)(θ), γγ-, energy-coin. 145Nd deduced levels, J, π. Pulsed beam, enriched solid 136Xe target, Ge(Li) detectors.

doi: 10.1016/0375-9474(86)90396-9
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1985HO17      Nucl.Phys. A441, 344 (1985)

D.Horn, I.S.Towner, O.Hausser, D.Ward, H.R.Andrews, M.A.Lone, J.F.Sharpey-Schafer, N.Rud, P.Taras

Single-Particle States at very High Spin in the Light Dysprosium Isotopes

NUCLEAR REACTIONS 124Sn(32S, xn), E=150, 163 MeV; measured γγ-coin, recoil distance. 150,151,152Dy deduced levels, J, π, T1/2, B(λ). Pulsed beam, Compton suppressed Ge(Li) detectors, NaI(Tl) array, plunger. Shell model, effective interactions.

NUCLEAR STRUCTURE 148,149,150,151,152Dy; calculated level, B(λ). Shell model, effective interactions.

doi: 10.1016/0375-9474(85)90037-5
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1985TA02      Nucl.Phys. A435, 294 (1985)

P.Taras, O.Hausser, H.R.Andrews, D.Ward, M.A.Deleplanque, R.M.Diamond, A.O.Macchiavelli, F.S.Stephens

Neutron Alignment at High Spin in 156Dy

NUCLEAR REACTIONS 24Mg(136Xe, 4n), E=600, 620 MeV; measured I(γ)(θ, H). 156Dy deduced average g. Enriched targets, transient field IMPAC technique.

doi: 10.1016/0375-9474(85)90315-X
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1984HA06      Nucl.Phys. A412, 141 (1984)

O.Hausser, H.R.Andrews, D.Horn, M.A.Lone, P.Taras, P.Skensved, R.M.Diamond, M.A.Deleplanque, E.L.Dines, A.O.Macchiavelli, F.S.Stephens

Transient Magnetic Fields for Large-Z Atoms Recoiling through Gadolinium

NUCLEAR REACTIONS 207Pb, 232Th, U(58Ni, 58Ni'), E=222, 230 MeV; 207Pb(136Xe, 136Xe'), E=610 MeV; measured γ(58Ni)-, γ(136Xe)-coin, Coulomb excitation, Iγ(θγ, H), transient field effect in 232Th, 238U at high spin; deduced 207Pb recoil transient magnetic field velocity dependence in Gd at 77(K). Transient field IMPAC technique.

doi: 10.1016/0375-9474(84)90389-0
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1984HA39      Phys.Lett. 144B, 341 (1984)

O.Hausser, D.Ward, H.R.Andrews, P.Taras, B.Haas, M.A.Deleplanque, R.M.Diamond, E.L.Dines, A.O.Macchiavelli, R.McDonald, F.S.Stephens, C.V.Stager

Spin Precession of Unresolved High-Spin States in 153-156Dy

NUCLEAR REACTIONS 26Mg(132Xe, xn), E=645 MeV; 24Mg(136Xe, xn), E=610 MeV; measured γγ-coin, summed spectra, γ(θ), oriented nuclei. 153,154,155,156Dy deduced high-spin collectivities, average g, γ-multiplicity. Fast Dy recoils in ferromagnetic gadolinium.

doi: 10.1016/0370-2693(84)91274-7
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1983HA24      Nucl.Phys. A406, 339 (1983)

O.Hausser, H.R.Andrews, D.Ward, N.Rud, P.Taras, R.Nicole, J.Keinonen, P.Skensved, C.V.Stager

Large Transient Magnetic Fields for Rare-Earth Ions Recoiling in Gadolinium and γ-Factors of High-Spin States in 156,158,160Gd

NUCLEAR REACTIONS 169Tm, Gd(34S, 34S'γ), E=58, 70, 80, 90, 100, 108, 115, 125, 130 MeV; 169Tm, Gd(63Cu, 63Cu'γ), E=230 MeV; measured (34S'γ)-, (63Cu'γ)-coin, Iγ(θ, H); deduced velocity dependence of transient magnetic field in Gd at 80 K. 156,158,160Gd levels deduced g. Ge(Li) detectors, natural targets, transient field IMPAC technique.

doi: 10.1016/0375-9474(83)90466-9
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1983HO09      Phys.Rev.Lett. 50, 1447 (1983)

D.Horn, O.Hausser, I.S.Towner, H.R.Andrews, M.A.Lone, P.Taras

Identification of Single-Particle Configurations at very High Spin in 150-152Dy

NUCLEAR STRUCTURE 148,149,150,151,152Dy; calculated levels, B(λ) ratios. Shell model.

NUCLEAR REACTIONS 124Sn(32S, xn), E=163 MeV; measured γγ-coin. 150,151,152Dy deduced levels, J, π, configurations, γ-branching, B(λ) ratios. Shell model.

doi: 10.1103/PhysRevLett.50.1447
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1983WA07      Nucl.Phys. A397, 161 (1983)

D.Ward, H.R.Andrews, B.Haas, P.Taras, N.Rud

Continuous Gamma Radiation Feeding High-Spin Isomers in 148,149,151,152Dy and 147Gd

NUCLEAR REACTIONS 120,122,124Sn(32S, xn), E=132-165 MeV; 124Sn(28Si, 5n), E=130-156 MeV; measured γγ-coin, γ(θ). 148,149,151,152Dy, 147Gd deduced continuum Eγ, γ-multipolarity, multiplicity spectra, average neutron kinetic energies. Pulsed beams, Ge(Li), NaI(Tl) array detectors, NaI(Tl) compton shielding crystal.

doi: 10.1016/0375-9474(83)90083-0
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1982AN10      Nucl.Phys. A383, 509 (1982)

H.R.Andrews, O.Hausser, D.Ward, P.Taras, R.Nicole, J.Keinonen, P.Skensved, B.Haas

Calibration of the Transient Magnetic Field for Rare-Earth Nuclei in Iron: Application to g-factors of high spin states in 152,154Sm

NUCLEAR REACTIONS 152,154Sm, Gd, 156Gd, Dy, 169Tm, 174Yb(63Cu, 63Cu'), E=154, 230 MeV; 152,154Sm, Gd, 156Gd, Dy, 169Tm, 174Yb(79Br, 79Br'), (81Br, 81Br'), E=200, 240 MeV; measured (63Cu)γ-, (79Br)γ-coin, γ(θ, H); deduced transient field calibration, Z, velocity dependence. 152,154Sm levels deduced g. Natural, enriched targets, Ge(Li) detectors, transient field IMPAC technique.

doi: 10.1016/0375-9474(82)90088-4
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1982BA46      Nucl.Phys. A389, 93 (1982)

O.Bakander, C.Baktash, J.Borggreen, J.B.Jensen, J.Kownacki, J.Pedersen, G.Sletten, D.Ward, H.R.Andrews, O.Hausser, P.Skensved, P.Taras

Co-Existence of Spherical and Oblate Configurations in 147Gd

NUCLEAR REACTIONS 135Ba(16O, 4n), E=77-84 MeV; 124Sn(28Si, 5n), E=128-140 MeV; measured γγ-coin, Iγ(θ), I(ce). 147Gd deduced levels, J, π, isomer T1/2, reduced transition probabilities. Pulsed beam, Ge(Li), Si(Li) detectors, NaI(Tl) array, mini-orange spectrometer.

doi: 10.1016/0375-9474(82)90293-7
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1982HA22      Nucl.Phys. A379, 287 (1982)

O.Hausser, H.E.Mahnke, T.K.Alexander, H.R.Andrews, J.F.Sharpey-Schafer, M.L.Swanson, D.Ward, P.Taras, J.Keinonen

Quadrupole Moments of Yrast Isomers in 144, 147, 148Gd

NUCLEAR REACTIONS 120,124Sn(28Si, xn), E=108-144 MeV; measured Iγ(θ, H, t) vs T. 144,147,148Gd levels deduced quadrupole moment, tentative J, deformation. Pulsed beam, Ge(Li) detectors, recoil implantation into Gd.

doi: 10.1016/0375-9474(82)90394-3
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1982TR01      Nucl.Phys. A378, 141 (1982)

W.Trautmann, J.F.Sharpey-Schafer, H.R.Andrews, B.Haas, O.Hausser, P.Taras, D.Ward

Measurement of the Linear Polarization of Continuum Gamma Rays from (32S, xn) Reactions to Prolate and Oblate Rare-Earth Nuclei

NUCLEAR REACTIONS 130Te, 124Sn(32S, xn), E=150 MeV; measured Eγ, Iγ, linear polarization, γ(θ). 156,158Er, 151,152Dy deduced γ-multipolarity, collective γ-ray continuum. Pulsed beam, NaI(Tl), Ge(Li) detectors, three-Ge(Li) polarimeter, NaI(Tl) array.

doi: 10.1016/0375-9474(82)90387-6
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1981HA17      Nucl.Phys. A362, 254 (1981)

B.Haas, D.Ward, H.R.Andrews, O.Hausser, A.J.Ferguson, J.F.Sharpey-Schafer, T.K.Alexander, W.Trautmann, D.Horn, P.Taras, P.Skensved, T.L.Khoo, R.K.Smither, I.Ahmad, C.N.Davids, W.Kutschera, S.Levenson, C.L.Dors

Yrast Isomers and very High Spin States in 148, 149, 151, 152Dy and 147Gd

NUCLEAR REACTIONS 120,122,124Sn(32S, xn), (34S, xn), E=129-165 MeV; 124Sn(28Si, 5n), E=110-149 MeV; 142Nd(12C, xn), E=56-61 MeV; measured γγ-coin, γγ(θ), γ(θ), γ(θ, t), linear polarization, recoil. 148,149,151,152Dy, 147Gd deduced levels, J, π, δ, T1/2, E2 transition strengths. Pulsed beam, Ge(Li) detectors, NaI(Tl) array, plunger, polarimeter.

doi: 10.1016/0375-9474(81)90680-1
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1981HA44      Nucl.Phys. A371, 349 (1981)

J.C.Hardy, T.Faestermann, H.Schmeing, J.A.MacDonald, H.R.Andrews, J.S.Geiger, R.L.Graham, K.P.Jackson

T(z) = 1/2 β-Delayed Proton Precursors (II). The Decays 65Ge and 73Kr

RADIOACTIVITY 65Ge [from 40Ca(28Si, 2pn)], 73Kr [from 60Ni(16O, 3n)]; measured β-delayed protons, E(p), I(p), T1/2, pγ-, p X-ray-, γX-ray-coin; deduced branching ratios. 65Ga, 73Br deduced level T1/2, level densities, β-strength function. Natural and enriched targets, Ge(Li), Ge, NaI(Tl), surface barrier Si detectors.

doi: 10.1016/0375-9474(81)90051-8
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1981RU02      Phys.Lett. 100B, 17 (1981)

N.Rud, D.Ward, H.R.Andrews, P.Taras, J.Keinonen

Evidence for Enhanced transition Rates in the Feeding of High Spin States in 147Gd

NUCLEAR REACTIONS 124Sn(28Si, 5n), E=130, 145 MeV; measured γ-multiplicity, σ(Eγ), γ(θ). 147Gd deduced strectched E2 transition to quasiparticle yrast states, average B(E2), average entry spin J.

doi: 10.1016/0370-2693(81)90276-8
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1981RU05      Phys.Lett. 101B, 35 (1981)

N.Rud, D.Ward, H.R.Andrews, O.Hausser, P.Taras, J.Keinonen, M.Neiman, R.M.Diamond, F.S.Stephens

Average g-Factors for High Spin States in 156Dy

NUCLEAR REACTIONS 24Mg(136Xe, 4n), E=544, 570, 650 MeV; measured γ-multiplicities, γγ(θ, H) in Fe. 156Dy deduced average g in high-spin region.

doi: 10.1016/0370-2693(81)90483-4
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1981SK01      Nucl.Phys. A366, 125 (1981)

P.Skensved, R.Chapman, R.L.Kozub, J.R.Leslie, W.McLatchie, D.Ward, H.R.Andrews, O.Hausser

The Ground-State Rotational Band in 175Lu

NUCLEAR REACTIONS 175Lu(40Ca, 40Ca'), E=168 MeV; γ40Ca(θ), recoil, Eγ, Iγ, γ(θ), DSA, Coulomb excitation. 175Lu levels deduced T1/2, B(λ), δ, γ-branching ratio, quadrupole moment, g(k), g(R).

doi: 10.1016/0375-9474(81)90492-9
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1981TA24      Phys.Lett. 107B, 35 (1981)

P.Taras, G.C.Ball, W.G.Davies, H.R.Andrews, B.Haas

Evidence for Alpha-Cluster Structure at 12.9 MeV CM in the 12C + 16O System

NUCLEAR REACTIONS 12C(16O, 12C), E(cm)=12.2-13.5 MeV; measured σ(θ) vs E, σ(E(12C)). 28Si resonance deduced J, π, Γ, α-cluster structure.

doi: 10.1016/0370-2693(81)91141-2
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1981WA04      Phys.Lett. 99B, 378 (1981)

D.Ward, J.F.Sharpey-Schafer, T.K.Alexander, H.R.Andrews, O.Hausser, J.Keinonen

Remeasurement of Lifetimes for High Spin States in 154Er

NUCLEAR REACTIONS 126Te(32S, 4n), E=130-150, 155 MeV; measured Eγ, Iγ, recoil, σ(Eγ). 154Er deduced levels, γ-branching, T1/2, B(E2), yrast state configuration. Ge(Li), NaI(Tl)detectors.

doi: 10.1016/0370-2693(81)90552-9
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1981WA16      Nucl.Phys. A365, 173 (1981)

D.Ward, H.R.Andrews, A.J.Ferguson, O.Hausser, N.Rud, P.Skensved, J.Keinonen, P.Taras

Average g-Factors for High-Spin States in 78Kr

NUCLEAR REACTIONS 16,18O(65Cu, 2np), (63Cu, 2np), E=190-210 MeV; measured γ(θ, B) in polarized Fe. 78Kr levels deduced g. Enriched targets, transient field perturbed angular correlation technique.

doi: 10.1016/0375-9474(81)90394-8
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1980AN27      Phys.Rev.Lett. 45, 1835 (1980)

H.R.Andrews, O.Hausser, D.Ward, P.Taras, N.Rud, B.Haas, R.M.Diamond, D.Fossan, H.Kluge, M.Nieman, C.Roulet, F.S.Stephens

g Factors of High-Spin States in 160Dy and 170,174Yb Measured by the Transient Magnetic Field Interaction

NUCLEAR REACTIONS 160Dy, 170,174Yb(86Kr, 86Kr'), E=350 MeV; measured (86Kr)γ-coin, multiple coulomb excitation, recoil in Fe, γ(θ, H). 160Dy, 170,174Yb deduced g for high-spin states.

doi: 10.1103/PhysRevLett.45.1835
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1980HA02      Phys.Rev.Lett. 44, 132 (1980)

O.Hausser, H.-E.Mahnke, J.F.Sharpey-Schafer, M.L.Swanson, P.Taras, D.Ward, H.R.Andrews, T.K.Alexander

Quadrupole Moment of a High-Spin Yrast Trap in 147Gd

NUCLEAR REACTIONS 124Sn(28Si, 5nγ), E=144 MeV; measured γ(θ, t), oriented nuclei, quadrupole interactions. 147Gd levels deduced quadrupole moments, quasiparticle configuration, β. Pulsed beam.

doi: 10.1103/PhysRevLett.44.132
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1980HA11      Nucl.Instrum.Methods 169, 539 (1980)

O.Hausser, D.Ward, H.R.Andrews, N.Rud, P.Skensved, C.Broude

Application of Transient Magnetic Fields to the Measurement of g-Factor for Shortlived Nuclear States Populated by Multiple Coulomb Excitation

NUCLEAR REACTIONS 174Yb(86Kr, 86Kr'), E=344 MeV; measured particle γ-coin, γ(θ, H) in Fe, Coulomb excitation σ; deduced spin, T1/2 dependence of g. Theoretical evaluation of level population, spin precision angle time evolution.


1980HA52      Hyperfine Interactions 8, 271 (1980)

O.Hausser, D.Ward, T.K.Alexander, H.R.Andrews, W.J.L.Buyers, H.-E.Mahnke, J.F.Sharpey-Schafer, P.Skensved, M.L.Swanson, P.Taras

The Electric Field Gradient for Gd in Gadolinium Metal

NUCLEAR REACTIONS 120Sn(28Si, 4n), E=130 MeV; measured γ(θ, H), recoil in Gd host. 144Gd deduced temperature dependence of electric field gradient in Gd above Curie point. 156,158,160Gd(α, α'), E=6 MeV; measured Coulomb excitation, Iγ; deduced electric field gradient for Gd in Gd.


1980WA23      Nucl.Phys. A349, 1 (1980)

P.M.Walker, D.Ward, O.Hausser, H.R.Andrews, T.Faestermann

g-Factors for 172,173,174,178Hf K-Isomers

NUCLEAR REACTIONS 170,171,172,176Yb(α, 2n), E=26-30 MeV; measured Iγ(θ, H, t, T). 172,173,174,178Hf levels deduced g, T1/2. Ge(Li) detectors. Enriched targets.

doi: 10.1016/0375-9474(80)90439-X
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1979BA31      Nucl.Phys. A325, 305 (1979)

G.C.Ball, W.G.Davies, J.S.Forster, H.R.Andrews, D.Horn, W.McLatchie

The Use of Exotic Heavy Ion Transfer Reactions to Study Light Neutron Rich Nuclei

NUCLEAR REACTIONS 207,208Pb(18O, 21O), (18O, 22O), (18O, 19N), (18O, 17O), E=93 MeV; measured position spectra; deduced Q. 21,22O, 19N, 17C deduced mass excess. Enriched targets, QD3 spectrometer analysis.

doi: 10.1016/0375-9474(79)90165-9
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1979CO14      Phys.Rev. C20, 847 (1979)

E.J.Cohen, H.R.Andrews, T.F.Knott, F.M.Pipkin, D.C.Santry

Beta-Ray Asymmetry from Oriented 110mAg

RADIOACTIVITY 110mAg; measured Iβ(θ); deduced ratio of Fermi to Gamow-Teller matrix elements. Thin oriented source.

doi: 10.1103/PhysRevC.20.847
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1979HA06      Nucl.Phys. A314, 161 (1979)

O.Hausser, B.Haas, D.Ward, H.R.Andrews

The g-Factors of Excited States in 205,203Tl Measured by Transient Field Interaction at High Recoil Velocities

NUCLEAR REACTIONS 194,196,198Pt(40Ca, 40Ca'γ), E=120 MeV; 194,196,198Pt(81Br, 81Br'γ), E=190 MeV; 203,205Tl(40Ca, 40Ca'γ), E=120 MeV; measured γ-precession. 203,205Tl deduced g. 194,196,198Pt deduced g-ratios for 2+ levels. Enhanced transient field, IMPAC technique.

doi: 10.1016/0375-9474(79)90560-8
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1979HA15      Phys.Rev.Lett. 42, 1451 (1979)

O.Hausser, P.Taras, W.Trautmann, D.Ward, T.K.Alexander, H.R.Andrews, B.Haas, D.Horn

g Factors of High-Spin Yrast Traps in 146,147Gd

NUCLEAR REACTIONS 120,122,124Sn(28Si, xn), E=108-144 MeV; 144Sm(α, xn), E=30 MeV; measured γγ(θ, H, t) in Sn, Sm, Pb. 144,146,147,148Gd levels deduced T1/2, g, configuration. Paramagnetic correction, pulsed beam. Enriched targets.

doi: 10.1103/PhysRevLett.42.1451
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1979HA28      Phys.Lett. 84B, 178 (1979)

B.Haas, H.R.Andrews, O.Hausser, D.Horn, J.F.Sharpey-Schafer, P.Taras, W.Trautmann, D.Ward, T.L.Khoo, R.K.Smither

Single Particle Nature of the Yrast Line at High Angular Momentum in 152Dy

NUCLEAR REACTIONS 122Sn(34S, 4nγ), 124Sn(32S, 4nγ), E=150 MeV; measured γγ-coin, γγ(t), γ-linear polarization, DSA, RDM. 152Dy deduced levels, branching ratios, transition probabilities, T1/2, J, π.

doi: 10.1016/0370-2693(79)90278-8
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1979HO06      Nucl.Phys. A317, 520 (1979)

D.Horn, O.Hausser, B.Haas, T.K.Alexander, T.Faestermann, H.R.Andrews, D.Ward

High Spin Yrast States in N = 126 Isotones

NUCLEAR REACTIONS 204Hg, 205Tl, 206Pb(13C, 5nγ), E=72-86 MeV; measured Iγ(E, t), Iγ(θ, H, t), γγ(t), γX(t), Iγ(θ), linear polarization (γ). 212Rn, 213Fr, 214Ra deduced T1/2, g, level sequences, J, π, B(E3). Pulsed beam, enriched thick targets. Ge(Li) detectors.

doi: 10.1016/0375-9474(79)90496-2
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1979MA37      Phys.Lett. 88B, 48 (1979)

H.-E.Mahnke, T.K.Alexander, H.R.Andrews, O.Hausser, P.Taras, D.Ward, E.Dafni, G.D.Sprouse

Quadrupole Moments of the 12+ States in 206Pb and 200Pb

NUCLEAR REACTIONS 204,198Hg(α, 2n), E=33 MeV; measured γ(θ, H, t). 206,200Pb levels deduced quadrupole moments, T1/2, B(E2).

doi: 10.1016/0370-2693(79)90110-2
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1979TR08      Phys.Rev.Lett. 43, 991 (1979)

W.Trautmann, J.F.Sharpey-Schafer, H.R.Andrews, B.Haas, O.Hausser, P.Taras, D.Ward

Linear Polarization of the Continuum γ Rays Feeding High-Spin Yrast States in 151,152Dy and 156-158Er

NUCLEAR REACTIONS 124Sn(32S, 5n), (32S, 4n), 130Te(32S, 4n), (32S, 5n), (32S, 6n), E=150 MeV; measured continuum γ-linear polarization, σ(Eγ), Iγ(θ). 156,157,158Er levels deduced E2 cascade involving high-spin yrast states. 151,152Dy levels deduced collective rotational character of high-spin yrast states.

doi: 10.1103/PhysRevLett.43.991
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1979WA12      Nucl.Phys. A332, 433 (1979)

D.Ward, H.R.Andrews, O.Hausser, Y.El Masri, M.M.Aleonard, I.Yang-Lee, R.M.Diamond, F.S.Stephens, P.A.Butler

Measurements of Lifetimes and Feeding Times for High Spin States in 156Dy

NUCLEAR REACTIONS 24Mg(136Xe, 4n), E=595 MeV; measured recoil distance decay curves, γγ-coin. 156Dy levels deduced Q0, B(E2) values, feeding times. NaI(Tl) multiplicity array, Ge(Li) detectors.

doi: 10.1016/0375-9474(79)90012-5
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1979WA15      Nucl.Phys. A330, 225 (1979)

D.Ward, O.Hausser, H.R.Andrews, P.Taras, P.Skensved, N.Rud, C.Broude

Measurement of g-Factors in 170Yb, 172Yb and 174Yb by Transient Field Interaction at High Recoil Velocities

NUCLEAR REACTIONS 169Tm, 170,172,174Yb(40Ca, 40Ca'γ), E=168 MeV; measured (40Ca', γ)coin, γ(θ, H). 170,172,174Yb deduced g-factors. Enriched targets. Enhanced transient field. IMPAC technique.

doi: 10.1016/0375-9474(79)90547-5
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1978BR25      Nucl.Phys. A306, 242 (1978)

B.A.Brown, O.Hausser, T.Faestermann, D.Ward, H.R.Andrews, D.Horn

Search for Parity Mixing in the 93Tc 17/2 Isomer: Measurements of Partial γ-Decay Widths

NUCLEAR REACTIONS 63Cu(32S, 2n2p), E=120 MeV; measured γ(θ), linear polarization of delayed γ-rays. 93Tc deduced levels, γ-branching, δ, limit on parity-violating E2 component in 17/2-→13/2+ transition. Enriched target, pulsed beam.

doi: 10.1016/0375-9474(78)90326-3
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1978FA17      Hyperfine Interactions 4, 216 (1978)

T.Faestermann, O.Hausser, D.Ward, H.R.Andrews, T.K.Alexander, D.Horn, T.L.Khoo

g-Factor for the K = 6, Jπ = 6+ Isomer in 178Hf

NUCLEAR REACTIONS 176Yb(α, 2n), E=27 MeV; measured Eγ, Iγ(θ, H, t). 178Hf deduced isomeric state g factor. Time-differential perturbed angular distribution technique.

doi: 10.1007/BF01021828
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1978HA07      Phys.Lett. 73B, 127 (1978)

O.Hausser, T.K.Alexander, T.Faestermann, D.Horn, D.Ward, H.R.Andrews, I.S.Towner

Magnetic Moments of Jπ = 19/2- Mirror States in 43Ti and 43Sc

NUCLEAR REACTIONS 40Ca(α, n), (α, p), E=21 MeV; measured γ(θ, H, t). 43Ti, 43Sc levels deduced T1/2, g.

doi: 10.1016/0370-2693(78)90815-8
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1978HA52      Hyperfine Interactions 4, 196 (1978)

O.Hausser, T.Faestermann, I.S.Towner, T.K.Alexander, H.R.Andrews, J.R.Beene, D.Horn, D.Ward, C.Broude

Magnetic Moments of N = 48-50 Nuclei and Proton Core Polarization

RADIOACTIVITY 90m,88mZr, 91m,90mNb, 93mTc, 90m,91m,92mMo, 94mRu, 86mSr; measured g; deduced core polarization. Heavy ion induced reactions, evaporation residues, transient field techniques.


1978KH02      Phys.Rev.Lett. 41, 1027 (1978)

T.L.Khoo, R.K.Smither, B.Haas, O.Hausser, H.R.Andrews, D.Horn, D.Ward

Yrast Traps and Very High-Spin Yrast States in 152Dy

NUCLEAR REACTIONS 124Sn(32S, 4nγ), E=129-160 MeV; measured σ(E, Eγ, θ, t), γγ(θ, t), recoil distance. 142Nd(12C, 2n), 143Nd(12C, 3n); measured σ(E, Eγ). 152Dy deduced yrast isomers, levels, T1/2, J, π.

doi: 10.1103/PhysRevLett.41.1027
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1978SP09      Hyperfine Interactions 4, 229 (1978)

G.D.Sprouse, O.Hausser, H.R.Andrews, T.Faestermann, J.R.Beene, T.K.Alexander

Static Quadrupole Moments in Cd Isotopes

NUCLEAR REACTIONS 92,94,96Zr(16O, 3n), E=56-68 MeV; 111Cd(16O, 16O'), E=56-68 MeV; measured γ(θ, H, t). 111,109,107,105Cd levels deduced static quadrupole moments.

doi: 10.1007/BF01021832
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1977HA49      Nucl.Phys. A293, 248 (1977)

O.Hausser, I.S.Towner, T.Faestermann, H.R.Andrews, J.R.Beene, D.Horn, D.Ward

Magnetic Moments of N = 50 Isotones and Proton Core Polarization

NUCLEAR REACTIONS 88Sr(α, 2nγ), 90Zr(α, 2nγ), 92Mo(α, 2nγ), E=24-25 MeV; 88Sr(6Li, 3nγ), E=34 MeV; 65Cu(32S, 2n2pγ), E=120 MeV; 65Cu(32S, 2n3pγ), E=132 MeV; 64Ni(32S, 2n2pγ), E=132 MeV; 63Cu(35Cl, 2n2pγ), E=120 MeV; measured Iγ(θ, H, t). 90Zr, 91Nb, 92Mo, 93Tc, 94Ru deduced g-factors, T1/2. Ge(Li) detectors. Enriched targets of 90Zr, 65Cu, 63Cu, 64Ni.

doi: 10.1016/0375-9474(77)90490-0
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1977MA24      Nucl.Phys. A288, 1 (1977)

J.A.Macdonald, J.C.Hardy, H.Schmeing, T.Faestermann, H.R.Andrews, J.S.Geiger, R.L.Graham, K.P.Jackson

T(z) = 1/2 β-Delayed Proton Precursors (I). The Decay of 69Se

RADIOACTIVITY 69Se [from 40Ca(32S, 2pn)]; measured β-delayed protons, Ep, Ip, T1/2, Eγ, Iγ, γγ-, βγ-, pγ-coin, pX-ray, γX-ray coin; deduced log ft, Q(EC). 69As deduced levels, level density, ICC, B(λ). 69As; measured βγ-coin; deduced Q. Natural enriched targets. Ge(Li), Si(Li), NaI(Tl), Ne 102 plastic scintillator, surface-barrier Si detectors.

doi: 10.1016/0375-9474(77)90078-1
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1977SI18      Nucl.Phys. A291, 443 (1977)

S.H.Sie, D.Ward, J.S.Geiger, R.L.Graham, H.R.Andrews

Measurement of Lifetimes for High Spin States in 152Sm, 154Gd and 156Gd by the Doppler Broadened Lineshape Method

NUCLEAR REACTIONS 152Sm, 154Gd, 156Gd(35Cl, 35Cl'γ), E=132-143 MeV; measured 35Cl' γ-coin, Doppler broadened lineshape; derived empirical electronic stopping powers. 152Sm, 154,156Gd levels deduced T1/2, B(E2). Compared with rotational model. Enriched targets, Ge(Li) detectors.

doi: 10.1016/0375-9474(77)90331-1
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1977TA10      Nucl.Phys. A289, 165 (1977)

P.Taras, D.Ward, H.R.Andrews, J.S.Geiger, R.L.Graham, W.McLatchie

Electromagnetic Properties of the Ground State Rotational Band in 169Tm

NUCLEAR REACTIONS 169Tm(32S, 32S'γ), E=130, 140 MeV; measured recoil distance, DSA, 32S'γ(θ), Eγ, Iγ. 169Tm levels deduced transitions, δ, T1/2, B(λ), γ-branching.

doi: 10.1016/0375-9474(77)90527-9
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1976BA03      Phys.Lett. 60B, 265 (1976)

G.C.Ball, W.G.Davies, J.S.Forster, H.R.Andrews

Use of the 208Pb(18O, 21O)205Pb Reaction to Measure the Mass of 21O

NUCLEAR REACTIONS 208Pb(18O, 21O), (18O, 20O), E=93 MeV; measured σ(θ). 208Pb(18O, 21O) deduced Q. 21O deduced mass excess.

doi: 10.1016/0370-2693(76)90296-3
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1976FO20      Nucl.Instrum.Methods 136, 349 (1976)

J.S.Forster, D.Ward, H.R.Andrews, G.C.Ball, G.J.Costa, W.G.Davies, I.V.Mitchell

Stopping Power Measurements for 19F, 24Mg, 27Al, 32S and 35Cl at Energies ≈0.2 to ≈3.5 MeV/Nucleon in Ti, Fe, Ni, Cu, Ag and Au

NUCLEAR REACTIONS Ti, Fe, Ni, Cu, Ag(19F, X), (24Mg, X), (27Al, X), (32S, X), (35Cl, X), E ≈ 0.2-3.5 MeV/nucleon; measured stopping power.

doi: 10.1016/0029-554X(76)90218-4
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1976HA22      Phys.Rev.Lett. 37, 133 (1976); Erratum Phys.Rev.Lett. 37, 459 (1976)

J.C.Hardy, J.A.Macdonald, H.Schmeing, H.R.Andrews, J.S.Geiger, R.L.Graham, T.Faestermann, E.T.H.Clifford, K.P.Jackson

Nuclear Lifetimes in the Region of 10-16 sec Measured by a New Technique

RADIOACTIVITY 69Se; measured p X-ray(t), pγ(t), γ X-ray(t), T1/2, Eβ, Q. 69As levels deduced T1/2 limits.

doi: 10.1103/PhysRevLett.37.133
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1976HA29      Phys.Lett. 63B, 27 (1976); Erratum Phys.Lett. 73B, 503 (1978)

J.C.Hardy, J.A.MacDonald, H.Schmeing, T.Faestermann, H.R.Andrews, J.S.Geiger, R.L.Graham, K.P.Jackson

A New Series of Beta-Delayed Proton Precursors

RADIOACTIVITY 65Ge, 69Se, 73Kr, 77Sr; measured delayed protons, T1/2; deduced total β-branching to proton emission, Q(EC)-Bp. 69Se; measured Eβ; deduced Q.

doi: 10.1016/0370-2693(76)90460-3
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1975WA14      Izv.Akad.Nauk SSSR, Ser.Fiz. 39, 37 (1975); Bull.Acad.Sci.USSR, Phys.Ser. 39, No.1, 30 (1975)

D.Ward, H.R.Andrews, G.J.Costa, J.S.Geiger, R.L.Graham, P.Taras

Values of the Lifetimes of States Having a High Nuclear Spin for Which Back Bending Is Observed. The Possibility of Measuring g-Factors by the Method of Varying the Flight of Recoil Nuclei in Vacuum

NUCLEAR REACTIONS 110Pd(24Mg, 4n), E=103 MeV; 115In(19F, 4n), E=86 MeV; measured Eγ, Iγ, σ(Eγ, θ), γγ-coin, recoil distance.


1975WA15      Izv.Akad.Nauk SSSR, Ser.Fiz. 39, 44 (1975); Bull.Acad.Sci.USSR, Phys.Ser. 39, No.1, 36 (1975)

D.Ward, H.R.Andrews, R.L.Graham, J.S.Geiger, S.H.Sie

Improving the Method of Using Doppler Broadening of a Line in Order to Measure the Lifetimes of States Having High Spins in Nuclei in the Rare-Earth Region

NUCLEAR REACTIONS 152Sm, 154,156Gd(35Cl, 35Cl'γ), E=130-135 MeV; measured recoil distance. 152Sm, 154,156Gd levels deduced T1/2, B(E2).


1974AN03      Nucl.Phys. A219, 141 (1974)

H.R.Andrews, D.Ward, R.L.Graham, J.S.Geiger

High Spin States in the Ground and β-Bands of 156Dy and the Band-Crossing Interpretation of Back Bending

NUCLEAR REACTIONS 155Gd(α, 3n), E=36-40 MeV; 148Nd(12C, 4n), E=55-65 MeV; measured Eγ, Iγ(θ), γγ-coincidences. 156Dy deduced levels, J, relative B(E2) values, rotational angular velocity, moment of inertia. Enriched targets. Ge(Li) detectors.

doi: 10.1016/0375-9474(74)90088-8
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1974HA59      Phys.Rev.Lett. 33, 1647 (1974)

J.C.Hardy, H.R.Andrews, J.S.Geiger, R.L.Graham, J.A.Macdonald, H.Schmeing

Fermi Beta Decay, A > 40: The Half-Lives of 46V, 50Mn, and 54Co

RADIOACTIVITY 46V, 50Mn, 54Co; measured T1/2; deduced ft.

doi: 10.1103/PhysRevLett.33.1647
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1974WA21      Nucl.Phys. A234, 94 (1974)

D.Ward, H.R.Andrews, R.L.Graham, J.S.Geiger, N.Rud

Dependence of Nuclear Deorientation on Nuclear Spin for Recoils in Vacuum

NUCLEAR REACTIONS 150Sm, 156Gd(35Cl, 35Cl'γ), E=133 MeV; measured Cl'γ(θ). 150Sm, 156Gd levels deduced deorientation times. Enriched targets.

doi: 10.1016/0375-9474(74)90381-9
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1973AN06      Phys.Rev. C7, 1851 (1973)

H.R.Andrews, E.J.Cohen, T.F.Knott, F.M.Pipkin, D.C.Santry

Accurate Measurement of the Positron Asymmetry from Oriented 58Co

RADIOACTIVITY 58Co; measured Iβ(θ), Iγ(θ) from aligned nuclei. Deduced Fermi-Gamow-Teller mixing ratio.

doi: 10.1103/PhysRevC.7.1851
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1973RU08      Phys.Rev.Lett. 31, 1421 (1973)

N.Rud, D.Ward, H.R.Andrews, R.L.Graham, J.S.Geiger

Lifetimes in the Ground-State Band of 184Hg

NUCLEAR REACTIONS 156Gd(32S, 4nγ), E=156 MeV; measured Eγ, Iγ, γγ(θ, t), recoil distance. 184Hg deduced levels, J, π, T1/2, B(E2).

doi: 10.1103/PhysRevLett.31.1421
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1973WA06      Phys.Rev.Lett. 30, 493 (1973)

D.Ward, H.R.Andrews, J.S.Geiger, R.L.Graham, J.F.Sharpey-Schafer

Lifetimes for Levels Above the 'Rotational Phase Change' in 158Er

NUCLEAR REACTIONS 130Te(32S, 4nγ), E=135 MeV; measured recoil distance, γγ-coin, Eγ, Iγ. 158Er levels deduced T1/2.

doi: 10.1103/PhysRevLett.30.493
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1973WA12      Phys.Lett. 44B, 39 (1973)

D.Ward, R.L.Graham, J.S.Geiger, H.R.Andrews

Anomalous Moments of Inertia for High-Spin Levels in the Beta Vibrational Band of 154Gd

NUCLEAR REACTIONS 154Sm(α, 4nγ), E=38, 41 MeV; measured σ(E;Eγ, θ), γγ-coin. 154Gd deduced levels, J, π.

doi: 10.1016/0370-2693(73)90294-3
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1972WA23      Nucl.Phys. A193, 479 (1972)

D.Ward, R.L.Graham, J.S.Geiger, H.R.Andrews, S.H.Sie

Time-Differential Measurement of Nuclear Deorientation for Recoils in Vacuum

NUCLEAR REACTIONS 150Sm(35Cl, 35Cl'γ), E=80 MeV; measured recoil distance, σ(θ(γ)); analyzed deorientation effect.

doi: 10.1016/0375-9474(72)90334-X
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1970KN02      Phys.Rev.Lett. 25, 543 (1970)

T.F.Knott, H.R.Andrews, E.J.Cohen, F.M.Pipkin, D.C.Santry

Beta-Ray Asymmetry from Oriented 110mAg

RADIOACTIVITY 110mAg(polarized); measured Iβ(θ, Eβ) in Fe; deduced hyperfine field.

doi: 10.1103/PhysRevLett.25.543
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1968AN05      Phys.Rev. 169, 978 (1968)

H.R.Andrews, T.F.Knott, B.Greenebaum, F.M.Pipkin

Nuclear Orientation of 125Sb

NUCLEAR STRUCTURE 125Sb; measured not abstracted; deduced nuclear properties.

doi: 10.1103/PhysRev.169.978
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