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NSR database version of April 11, 2024.

Search: Author = N.R.Johnson

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1999MU05      Phys.Rev. C59, 2009 (1999)

W.F.Mueller, H.Q.Jin, J.M.Lewis, W.Reviol, L.L.Riedinger, M.P.Carpenter, C.Baktash, J.D.Garrett, N.R.Johnson, I.Y.Lee, F.K.McGowan, C.-H.Yu, S.Cwiok

High-Spin Structure in 181, 183Au

NUCLEAR REACTIONS 152Sm(35Cl, 4n), E=170 MeV; 150Sm(35Cl, 4n), E=168 MeV; measured Eγ, Iγ, γγ-coin. 181,183Au deduced high-spin levels, J, π, configurations, rotational band features.

NUCLEAR STRUCTURE 169,171,173,175,177,179Re, 171,173,175,177,179,181,183Ir, 177,179,181,183,185Au; calculated bandhead excitation energies, configurations, deformation parameters. 179Ir, 181,183,185Au; calculated Routhians, B(M1)/B(E2). Macroscopic-microscopic shell correction model.

doi: 10.1103/PhysRevC.59.2009
Citations: PlumX Metrics


1998ZH39      Chin.Phys.Lett. 15, 793 (1998)

S.-J.Zhu, C.-Y.Gan, J.H.Hamilton, A.V.Ramayya, B.R.S.Babu, M.Sakhaee, W.C.Ma, G.-L.Long, J.-K.Deng, L.-Y.Zhu, M.Li, L.-M.Yang, J.Kormicki, J.D.Cole, R.Aryaeinejad, Y.K.Dardenne, M.W.Drigert, J.O.Rasmussen, M.A.Stoyer, S.Y.Chu, K.E.Gregorich, M.F.Mohar, S.G.Prussin, I.Y.Lee, N.R.Johnson, F.K.McGowan

Collective Band Structures in the Neutron-Rich 107, 109Ru Nuclei

RADIOACTIVITY 252Cf(SF); measured Eγ, Iγ, γγ-coin. 107,109Ru deduced high-spin levels, J, π, configurations. Particle-rotor model analysis. Gammasphere array.

doi: 10.1088/0256-307X/15/11/005
Citations: PlumX Metrics


1997JO01      Phys.Rev. C55, 652 (1997)

N.R.Johnson, J.C.Wells, Y.Akovali, C.Baktash, R.Bengtsson, M.J.Brinkman, D.M.Cullen, C.J.Gross, H.-Q.Jin, I.-Y.Lee, A.O.Macchiavelli, F.K.McGowan, W.T.Milner, C.-H.Yu

Lifetimes of High-Spin States in the πi13/2 Band of 173Re

NUCLEAR REACTIONS 150Sm(27Al, 4n), E=132 MeV; measured γγγ-coin. 173Re deduced high-spin levels T1/2, transition quadrupole moments.

doi: 10.1103/PhysRevC.55.652
Citations: PlumX Metrics

Data from this article have been entered in the XUNDL database. For more information, click here.


1997TE03      Phys.Rev. C55, 1146 (1997)

G.M.Ter-Akopian, J.H.Hamilton, Yu.Ts.Oganessian, A.V.Daniel, J.Kormicki, A.V.Ramayya, G.S.Popeko, B.R.S.Babu, Q.-H.Lu, K.Butler-Moore, W.-C.Ma, E.F.Jones, J.K.Deng, D.Shi, J.Kliman, M.Morhac, J.D.Cole, R.Aryaeinejad, N.R.Johnson, I.Y.Lee, F.K.McGowan

Yields of Correlated Fragment Pairs in Spontaneous Fission of 252Cf

RADIOACTIVITY 252Cf(SF); measured correlated fragment pairs yields for Ru-Xe, Zr-Ce, Mo-Ba, Sr-Nd isotopes; deduced fission fragment yields vs mass, neutron multiplicities.

doi: 10.1103/PhysRevC.55.1146
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 dataset13648.


1997ZH23      J.Phys.(London) G23, L77 (1997)

S.J.Zhu, J.H.Hamilton, A.V.Ramayya, M.G.Wang, E.F.Jones, J.K.Hwang, B.R.S.Babu, W.C.Ma, G.L.Long, M.Li, L.Y.Zhu, J.K.Deng, T.N.Ginter, J.Kormicki, J.D.Cole, R.Aryaeinejad, Y.K.Dardenne, M.W.Drigert, G.Ter-Akopian, Yu.Ts.Oganessian, A.Daniel, J.O.Rasmussen, M.A.Stoyer, I.Y.Lee, S.Y.Chu, K.E.Gregorich, M.F.Mohar, S.G.Prussin, N.R.Johnson, F.K.McGowan

High Spin Octupole Correlations in the N = 85, 139Xe and 141Ba Isotones

RADIOACTIVITY 252Cf(SF); measured Eγ, Iγ, γγγ-coin. 139Xe, 141Ba deduced high-spin levels, J, π, B(E1)/B(E2) ratios, configurations, octupole bands. Gammasphere array. Band systematics from other data input.


1997ZH25      Chin.Phys.Lett. 14, 569 (1997)

S.-J.Zhu, M.-G.Wang, J.H.Hamilton, A.V.Ramayya, B.R.S.Babu, W.C.Ma, G.-L.Long, J.-K.Deng, L.-Y.Zhu, M.Li, T.N.Ginter, J.Kormicki, J.D.Cole, R.Aryaeinejad, Y.K.Dardenne, M.W.Drigert, J.O.Rasmussen, Yu.Ts.Oganessian, M.A.Stoyer, S.Y.Chu, K.E.Gregorich, M.F.Mohar, S.G.Prussin, I.Y.Lee, N.R.Johnson, F.K.McGowan

Reflection Asymmetric Shapes in the Neutron-Rich 140,143Ba Isotopes

RADIOACTIVITY 252Cf(SF); measured Eγ, Iγ, γγ-coin. 140,143Ba deduced levels, J, π, B(E1)/B(E2), γ-multipolarity, octupole deformation, other shape related features.


1996BI06      Phys.Rev. C53, 3165 (1996)

K.S.Bindra, P.F.Hua, B.R.S.Babu, C.Baktash, J.Barreto, D.M.Cullen, C.N.Davids, J.K.Deng, J.D.Garrett, M.L.Halbert, J.H.Hamilton, N.R.Johnson, A.Kirov, J.Kormicki, I.Y.Lee, W.C.Ma, F.K.McGowan, A.V.Ramayya, D.G.Sarantites, F.Soramel, D.Winchell

Reply to ' Comment on ' Prolate-Oblate Band Mixing and New Bands in 182Hg ' '

NUCLEAR STRUCTURE 182Hg; analyzed band-mixing interpretations; deduced method's applicability limitations.

doi: 10.1103/PhysRevC.53.3165
Citations: PlumX Metrics


1996CH34      Int.J.Mod.Phys. E5, 565 (1996)

L.Chaturvedi, B.R.S.Babu, J.H.Hamilton, A.V.Ramayya, W.C.Ma, S.J.Zhu, J.Kormicki, A.Petrovici, K.W.Schmid, A.Faessler, N.R.Johnson, I.Y.Lee, C.Baktash, F.K.McGowan, M.L.Halbert, M.Riley, J.D.Cole

Negative Parity States in 68Ge: Experiment and theory

NUCLEAR REACTIONS 46Ti(25Mg, n2p), E=68 MeV; measured γγ-coin. 68Ge deduced high-spin levels, γ-multipolarity, band structure.

doi: 10.1142/S021830139600030X
Citations: PlumX Metrics


1996HA27      Phys.Rep. 264, 215 (1996)

J.H.Hamilton, G.M.Ter-Akopian, Yu.Ts.Oganessian, J.Kormicki, S.J.Zhu, M.G.Wang, Q.Lu, K.Butler-Moore, A.V.Ramayya, W.C.Ma, B.R.S.Babu, D.Shi, J.K.Deng, G.S.Popeko, A.V.Daniel, W.Greiner, A.Sandulescu, J.D.Cole, R.Aryaeinejad, J.Kliman, V.Polhorsky, M.Morhac, N.R.Johnson, I.Y.Lee, F.K.McGowan, L.K.Peker

Structure of Neutron-Rich Nuclei and Neutron Multiplicities in Spontaneous Fission

RADIOACTIVITY 252Cf(SF); compiled, reviewed γγ-, γγγ-coin data. 140,143,145,147Ba, 136Te, 138Xe deduced high-spin levels. Other nuclei included.

doi: 10.1016/0370-1573(95)00039-9
Citations: PlumX Metrics


1996JI04      Phys.Rev. C53, 2106 (1996)

H.-Q.Jin, L.L.Riedinger, C.R.Bingham, M.P.Carpenter, V.P.Janzen, C.-H.Yu, L.Zhou, P.B.Semmes, J.-Y.Zhang, M.A.Riley, C.Baktash, M.L.Halbert, N.R.Johnson, I.Y.Lee, F.K.McGowan

Effects of Intruder States in 179Ir

NUCLEAR REACTIONS 156Gd(27Al, 4n), E=134-144 MeV; measured Eγ, Iγ, DCO ratios, γγ-coin. 179Ir deduced rotational bands, high-spin levels, J, π, γ multipolarity, configuration. Model comparison.

doi: 10.1103/PhysRevC.53.2106
Citations: PlumX Metrics


1996JO03      Phys.Rev. C53, 671 (1996)

N.R.Johnson, F.K.McGowan, D.F.Winchell, C.Baktash, J.D.Garrett, I.Y.Lee, J.C.Wells, L.Chaturvedi, W.B.Gao, W.C.Ma, S.Pilotte, C.-H.Yu

Evolution of Collectivity to Very High Spins in 160Yb

NUCLEAR REACTIONS 120Sn(44Ca, 4n), E=200 MeV; measured Eγ, Iγ, γγ-coin, Doppler broadened line shapes. 160Yb deduced transition quadrupole moments, high-spin levels T1/2. Enriched target. Comparison with theoretical model predictions.

doi: 10.1103/PhysRevC.53.671
Citations: PlumX Metrics


1996PA17      J.Phys.(London) G22, 1013 (1996)

D.Pantelica, A.Pantelica, F.Negoita, A.V.Ramayya, J.H.Hamilton, L.Chaturvedi, J.Kormicki, B.R.S.Babu, A.Petrovici, K.W.Schmid, A.Faessler, N.R.Johnson, I.Y.Lee, C.Baktash, F.K.McGowan, J.D.Cole, E.F.Zganjar, T.M.Cormier

Structure of Odd-Odd 72As: Experiment and theory

NUCLEAR REACTIONS 59Co(16O, n2p), E=52 MeV; 56Fe(19F, n2p), E=60 MeV; 47Ti(28Si, 3p), E=95 MeV; measured γγ-, (particle)γγ-coin, γγ(t), Eγ, Iγ, γ(θ). 72As deduced levels, J, π, B(λ), γ multipolarity. Model comparison.

doi: 10.1088/0954-3899/22/7/007
Citations: PlumX Metrics

Data from this article have been entered in the XUNDL database. For more information, click here.


1996PE04      Phys.Rev. C53, 2134 (1996)

A.Petrovici, K.W.Schmid, A.Faessler, D.Pantelica, F.Negoita, B.R.S.Babu, A.V.Ramayya, J.H.Hamilton, J.Kormicki, L.Chaturvedi, W.C.Ma, S.J.Zhu, N.R.Johnson, I.Y.Lee, C.Baktash, F.K.McGowan, M.L.Halbert, M.Riley, J.D.Cole

High Spin States in 68As: Experiment and theory

NUCLEAR REACTIONS 56Fe(14N, 2n), E=46 MeV; 58Ni(12C, np), E=36, 45 MeV; 46Ti(25Mg, 2np), E=68 MeV; measured γγ-coin. 68As deduced high-spin levels, J, π. Model comparison.

doi: 10.1103/PhysRevC.53.2134
Citations: PlumX Metrics

Data from this article have been entered in the XUNDL database. For more information, click here.


1996SA03      Phys.Rev. C53, 652 (1996)

J.X.Saladin, M.P.Metlay, D.F.Winchell, M.S.Kaplan, I.Y.Lee, C.Baktash, M.L.Halbert, N.R.Johnson, O.Dietzsch

Evidence for Continuum E0 Transitions following the Decay of High Spin States in 130Ce

NUCLEAR REACTIONS 100Mo(34S, 4n), E=140 MeV; measured γγ-, eγ-coin. 130Ce deduced high-spin levels, E0 transition strength, sub-shell ICC, γ multipolarity.

doi: 10.1103/PhysRevC.53.652
Citations: PlumX Metrics


1996TE04      Phys.Rev.Lett. 77, 32 (1996)

G.M.Ter-Akopian, J.H.Hamilton, Yu.Ts.Oganessian, A.V.Daniel, J.Kormicki, A.V.Ramayya, G.S.Popeko, B.R.S.Babu, Q.-H.Lu, K.Butler-Moore, W.-C.Ma, S.Cwiok, W.Nazarewicz, J.K.Deng, D.Shi, J.Kliman, M.Morhac, J.D.Cole, R.Aryaeinejad, N.R.Johnson, I.Y.Lee, F.K.McGowan, J.X.Saladin

New Spontaneous Fission Mode for 252Cf: Indication of hyperdeformed 144,145,146Ba at scission

RADIOACTIVITY 252Cf(SF); measured γγ-coin, prompt neutron multiplicities, Mo, Ba isotopes correlated fragment pairs yields; deduced new fission mode. 144,145,146Ba deduced hyperdeformed shape evidence at scission.

doi: 10.1103/PhysRevLett.77.32
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 dataset13648.


1996XI01      Nucl.Phys. A599, 560 (1996)

H.Xie, F.K.McGowan, C.Baktash, J.D.Garrett, J.H.Hamilton, N.R.Johnson, I.Y.Lee, J.C.Wells, R.Wyss, C.-H.Yu

The Loss of Collectivity at High Spins in 164Yb and Its Neighboring Even-Even Nuclei

NUCLEAR REACTIONS 124Sn(44Ca, 4n), E=189 MeV; measured Iγ, γγγ-coin spectra, Doppler broadened line-shape method. 164Yb deduced high-spin states T1/2, transition quadrupole moments.

NUCLEAR STRUCTURE 160,162,164,166,168Yb; calculated potential energy surfaces; deduced deformation parameters β2β4, γ. Cranked-Strutinsky type calculations.

doi: 10.1016/0375-9474(95)00446-7
Citations: PlumX Metrics

Data from this article have been entered in the XUNDL database. For more information, click here.


1995BA26      Phys.Rev.Lett. 74, 1946 (1995)

C.Baktash, D.M.Cullen, J.D.Garrett, C.J.Gross, N.R.Johnson, W.Nazarewicz, D.G.Sarantites, J.Simpson, T.R.Werner

First Observation of a Superdeformed Band in the N, Z ≈ 40 Mass Region

NUCLEAR REACTIONS 56Fe(30Si, X), E=128 MeV; measured γγ-coin. 83Sr deduced high-spin levels, J, π, superdeformed, rotational bands, dynamical moment of inertia.

doi: 10.1103/PhysRevLett.74.1946
Citations: PlumX Metrics


1995BI02      Phys.Rev. C51, 401 (1995)

K.S.Bindra, P.F.Hua, B.R.S.Babu, C.Baktash, J.Barreto, D.M.Cullen, C.N.Davids, J.K.Deng, J.D.Garrett, M.L.Halbert, J.H.Hamilton, N.R.Johnson, A.Kirov, J.Kormicki, I.Y.Lee, W.C.Ma, F.K.McGowan, A.V.Ramayya, D.G.Sarantites, F.Soramel, D.Winchell

Prolate-Oblate Band Mixing and New Bands in 182Hg

NUCLEAR REACTIONS 154Gd(32S, 4n), E=160-165 MeV; measured Eγ, Iγ, γγ(θ). 182Hg deduced high-spin levels, J, π, shape features. Compton suppressed Ge detectors, fragment mass analyzer, high spin states.

doi: 10.1103/PhysRevC.51.401
Citations: PlumX Metrics


1995CU03      Phys.Rev. C52, 2415 (1995)

D.M.Cullen, C.Baktash, M.J.Fitch, I.Frosch, R.W.Gray, N.R.Johnson, I.Y.Lee, A.O.Macchiavelli, W.Reviol, X.-H.Wang, C.-H.Yu

High-Spin States and K-Forbidden Decay in 172Hf

NUCLEAR REACTIONS 128Te(48Ca, 4n), E=200, 214 MeV; measured Eγ, Iγ, γγγ-coin. 172Hf deduced high-spin levels, J, π, rotational, strongly-coupled bands, B(λ) ratios, configurations, high-K isomers, M1, E2 transitions reduced hindrance factors. Cranked shell model calculation.

doi: 10.1103/PhysRevC.52.2415
Citations: PlumX Metrics

Data from this article have been entered in the XUNDL database. For more information, click here.


1995DE30      Phys.Rev. C52, 595 (1995)

J.K.Deng, W.C.Ma, J.H.Hamilton, A.V.Ramayya, J.Kormicki, W.B.Gao, X.Zhao, D.T.Shi, I.Y.Lee, J.D.Garrett, N.R.Johnson, D.Winchell, M.Halbert, C.Baktash

New High-Spin Band Structures in 184Hg

NUCLEAR REACTIONS 156Gd(32S, 4n), E=160 MeV; measured Eγ, Iγ, γγ(θ), DCO ratios. 184Hg deduced high-spin levels, J, π, B(M1)/B(E2) ratios, configurations. Ge(Li) detectors array.

doi: 10.1103/PhysRevC.52.595
Citations: PlumX Metrics

Data from this article have been entered in the XUNDL database. For more information, click here.


1995LU10      Phys.Rev. C52, 1348 (1995)

Q.H.Lu, K.Butler-Moore, S.J.Zhu, J.H.Hamilton, A.V.Ramayya, V.E.Oberacker, W.C.Ma, B.R.S.Babu, J.K.Deng, J.Kormicki, J.D.Cole, R.Aryaeinejad, Y.X.Dardenne, M.Drigert, L.K.Peker, J.O.Rasmussen, M.A.Stoyer, S.Y.Chu, K.E.Gregorich, I.Y.Lee, M.F.Mohar, J.M.Nitschke, N.R.Johnson, F.K.McGowan, G.M.Ter-Akopian, Yu.Ts.Oganessian, J.B.Gupta

Structure of 108,110,112Ru: Identical bands in 108,110Ru

RADIOACTIVITY 252Cf(SF); measured Eγ, Iγ, γγ-, γγγ-, (X-ray)γ-coin. 108,110,112Ru deduced levels, J, π, intraband B(E2) ratios. Rotation-vibration, rigid triaxial rotor calculation.

doi: 10.1103/PhysRevC.52.1348
Citations: PlumX Metrics

Data from this article have been entered in the XUNDL database. For more information, click here.


1995RI01      Phys.Rev. C51, 1234 (1995)

M.A.Riley, T.B.Brown, N.R.Johnson, Y.A.Akovali, C.Baktash, M.L.Halbert, D.C.Hensley, I.Y.Lee, F.K.McGowan, A.Virtanen, M.E.Whitley, J.Simpson, L.Chaturvedi, L.H.Courtney, V.P.Janzen, L.L.Riedinger, T.Bengtsson

Alignments, Shape Changes, and Band Terminations in 157Tm

NUCLEAR REACTIONS 51V(110Pd, X), E=220 MeV; measured γγ-coin, Eγ, Iγ. 157Tm deduced high-spin levels, J, π, γ-multipolarity. Cranked Nilsson-Strutinsky calculations, pairing.

doi: 10.1103/PhysRevC.51.1234
Citations: PlumX Metrics


1995VI05      Nucl.Phys. A591, 145 (1995)

A.Virtanen, N.R.Johnson, F.K.McGowan, I.Y.Lee, C.Baktash, M.A.Riley, J.C.Wells, J.Dudek

Transition Quadrupole Moments of High-Spin States in 172Os

NUCLEAR REACTIONS 144Nd(32S, 4n), E=162 MeV; measured γγ-coin, Doppler-shift recoil-distance. 172Os levels deduced T1/2, transition quadrupole moment for yrast negative-parity bands, B(E1). Cranked HFB calculations, band-mixing model.

doi: 10.1016/0375-9474(95)00132-K
Citations: PlumX Metrics


1995WI18      Phys.Rev. C51, 2952 (1995)

D.F.Winchell, I.Y.Lee, C.Baktash, J.D.Garrett, M.L.Halbert, N.R.Johnson, F.K.McGowan, C.H.Yu

Search for Two-Phonon Gamma Vibrational States in 164Dy

NUCLEAR REACTIONS 164Dy(58Ni, 58Ni'), E=250 MeV; measured Eγ, Iγ, γ(θ), γγ-coin following Coulomb excitation. 164Dy deduced levels, J, π, B(λ), δ, band mixing parameters.

doi: 10.1103/PhysRevC.51.2952
Citations: PlumX Metrics

Data from this article have been entered in the XUNDL database. For more information, click here.


1995ZH15      J.Phys.(London) G21, L57 (1995); Corrigendum J.Phys.(London) G21, 1555 (1995)

S.J.Zhu, J.H.Hamilton, A.V.Ramayya, B.R.S.Babu, Q.H.Lu, W.C.Ma, T.N.Ginter, M.G.Wang, J.Kormicki, J.K.Deng, D.Shi, J.D.Cole, R.Aryaeinejad, J.Rasmussen, M.A.Stoyer, S.Y.Chu, K.E.Gregorich, M.F.Mohar, S.Prussin, G.M.Ter-Akopian, Yu.Ts.Oganessian, N.R.Johnson, I.Y.Lee, F.K.McGowan

Identification of Levels in 160Sm and New High Spin States in 156,158Sm

RADIOACTIVITY 252Cf(SF); measured γγ-, (X-ray)(X-ray)-, γ(X-ray)-, γγγ-coin. 156,158Sm deduced high-spin levels, J, π, configuration, band structure. 160Sm deduced levels.

doi: 10.1088/0954-3899/21/7/002
Citations: PlumX Metrics


1995ZH34      Phys.Lett. 357B, 273 (1995)

S.J.Zhu, Q.H.Lu, J.H.Hamilton, A.V.Ramayya, L.K.Peker, M.G.Wang, W.C.Ma, B.R.S.Babu, T.N.Ginter, J.Kormicki, D.Shi, J.K.Deng, W.Nazarewicz, J.O.Rasmussen, M.A.Stoyer, S.Y.Chu, K.E.Gregorich, M.F.Mohar, S.Asztalos, S.G.Prussin, J.D.Cole, R.Aryaeinejad, Y.K.Dardenne, M.Drigert, K.J.Moody, R.W.Lougheed, J.F.Wild, N.R.Johnson, I.Y.Lee, F.K.McGowan, G.M.Ter-Akopian, Yu.Ts.Oganessian

Octupole Deformation in 142,143Ba and 144Ce: New band structures in neutron-rich Ba-isotopes

RADIOACTIVITY 252Cf(SF); 242Pu(SF); measured γγ-, γγγ-coin following fission fragment decay. 142,143,144,145,146,147Ba, 144Ce deduced high-spin levels, J, π, band structure, shape features, B(λ) in some cases.

doi: 10.1016/0370-2693(95)00900-6
Citations: PlumX Metrics

Data from this article have been entered in the XUNDL database. For more information, click here.


1995ZH39      J.Phys.(London) G21, L75 (1995)

S.J.Zhu, J.H.Hamilton, Q.H.Lu, A.V.Ramayya, M.G.Wang, B.R.S.Babu, T.N.Ginter, W.C.Ma, J.K.Deng, D.Shi, J.Kormicki, J.D.Cole, R.Aryaeinejad, Y.X.Dardenne, M.W.Drigert, N.R.Johnson, I.Y.Lee, F.K.McGowan, G.M.Ter-Akopian, Yu.Ts.Oganessian, J.O.Rasmussen, M.A.Stoyer, S.Y.Chu, K.E.Gregorich, M.F.Mohar, S.Prussin

Identification of 152Ce and Unexpected Variations in Moments of Inertia with Neutron Number and Spin in 142-148Ba, 144-152Ce and 146-156Nd

RADIOACTIVITY 252Cf, 242Pu(SF); measured γ(X-ray)-, γγγ-, (X-ray)(X-ray)-coin. 142,144,146,148Ba, 144,146,148,150,152Ce, 146,148,150,152,154,156Nd deduced high-spin levels, band structure, moments of inertia.

doi: 10.1088/0954-3899/21/10/001
Citations: PlumX Metrics


1994GA15      Phys.Rev. C49, 3309 (1994)

G.Garcia Bermudez, C.Baktash, V.Abenante, H.C.Griffin, M.L.Halbert, D.C.Hensley, N.R.Johnson, I.Y.Lee, F.K.McGowan, M.A.Riley, D.G.Sarantites, T.M.Semkow, D.W.Stracener, A.Virtanen

High Spin States of 84Sr

NUCLEAR REACTIONS 52Cr(36S, 2n2p), E=130 MeV; measured Eγ, Iγ, γγ-coin. 84Sr deduced levels, J, π.

doi: 10.1103/PhysRevC.49.3309
Citations: PlumX Metrics


1994HA31      J.Phys.(London) G20, L85 (1994)

J.H.Hamilton, A.V.Ramayya, J.Kormicki, W.-C.Ma, Q.Lu, D.Shi, J.K.Deng, S.J.Zhu, A.Sandulescu, W.Greiner, G.M.Ter-Akopian, Yu.Ts.Oganessian, G.S.Popeko, A.V.Daniel, J.Kliman, V.Polhorsky, M.Morhac, J.D.Cole, R.Aryaeinejad, I.Y.Lee, N.R.Johnson, F.K.McGowan

Zero Neutron Emission in Spontaneous Fission of 252Cf: A form of cluster radioactivity

RADIOACTIVITY 252Cf(SF); measured γγγ-coin; deduced neutronless spontaneous fission evidence, 106Mo+146Ba, 108Mo+144Ba, 104Zr+148Ce cluster production.

doi: 10.1088/0954-3899/20/8/003
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1994KL10      Yad.Fiz. 57, No 7, 1174 (1994); Phys.Atomic Nuclei 57, 1108 (1994)

J.Kliman, V.Polhorsky, M.Morhac, G.M.Ter-Akopian, Yu.Ts.Oganessian, G.S.Popeko, A.V.Daniel, J.H.Hamilton, K.Butler-Moore, A.V.Ramayya, W.-C.Ma, X.Zhao, Q.Lu, D.Shi, J.K.Deng, J.Kormicki, S.Zhu, J.D.Cole, R.Aryaeinejad, R.C.Greenwood, S.S.Harrill, N.D.Lohstreter, I.Y.Lee, N.R.Johnson, F.K.McGowan

Correlated Yields and the Emission of Neutrons of Mo/Ba Fragments from 252Cf(SF)

RADIOACTIVITY 252Cf(SF); analyzed fission data; deduced (Mo/Ba)fragment charge division evidence.


1994LE24      Phys.Rev. C50, 2602 (1994)

I.Y.Lee, C.Baktash, D.M.Cullen, J.D.Garrett, N.R.Johnson, F.K.McGowan, D.F.Winchell, C.H.Yu

Lifetimes of Low-Spin States in the Superdeformed Band of 192Hg

NUCLEAR REACTIONS 160Gd(36S, 4n), E=159 MeV; measured γγ-coin. 192Hg deduced superdeformed high-spin states T1/2. Recoil distance method.

doi: 10.1103/PhysRevC.50.2602
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1994MC06      Nucl.Phys. A580, 335 (1994)

F.K.McGowan, N.R.Johnson, M.N.Rao, C.Baktash, I.Y.Lee, J.C.Wells, M.Kortelahti, V.P.Janzen

Transition Quadrupole Moments of High-Spin States in 170W

NUCLEAR REACTIONS 122Sn(52Cr, 4n), E=230 MeV; measured γγ-coin, Doppler shift recoil distance. 170W deduced high-spin levels T1/2, transition quadrupole moments, B(λ), band structure.

doi: 10.1016/0375-9474(94)90778-1
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1994PI01      Phys.Rev. C49, 718 (1994)

S.Pilotte, C.-H.Yu, H.Q.Jin, J.M.Lewis, L.L.Riedinger, Y.Liang, R.V.F.Janssens, M.P.Carpenter, T.L.Khoo, T.Lauritsen, F.Soramel, I.G.Bearden, C.Baktash, J.D.Garrett, N.R.Johnson, I.Y.Lee, F.K.McGowan

Superdeformed Bands in 191Tl

NUCLEAR REACTIONS 159Tb(36S, 4n), E=165 MeV; measured Eγ, Iγ, γγ-coin. 191Tl deduced superdeformed levels J, π, single particle configuration. Enriched target, Compton-suppressed Ge detector array. Cranked shell model.

doi: 10.1103/PhysRevC.49.718
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1994TE08      Phys.Rev.Lett. 73, 1477 (1994)

G.M.Ter-Akopian, J.H.Hamilton, Yu.Ts.Oganessian, J.Kormicki, G.S.Popeko, A.V.Daniel, A.V.Ramayya, Q.Lu, K.Butler-Moore, W.C.Ma, J.K.Deng, D.Shi, J.Kliman, V.Polhorsky, M.Morhac, W.Greiner, A.Sandelescu, J.D.Cole, R.Aryaeinejad, N.R.Johnson, I.Y.Lee, F.K.McGowan

Neutron Multiplicities and Yields of Correlated Zr-Ce and Mo-Ba Fragment Pairs in Spontaneous Fission of 252Cf

RADIOACTIVITY 252Cf(SF); measured γγ-, γγγ-coin; deduced Zr-Ce, Mo-Ba correlated fission fragment pair relative yields, neutron multiplicities.

doi: 10.1103/PhysRevLett.73.1477
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1993AR05      Phys.Rev. C48, 566 (1993)

R.Aryaeinejad, J.D.Cole, R.C.Greenwood, S.S.Harrill, N.P.Lohstreter, K.Butler-Moore, S.Zhu, J.H.Hamilton, A.V.Ramayya, X.Zhao, W.C.Ma, J.Kormicki, J.K.Deng, W.B.Gao, I.Y.Lee, N.R.Johnson, F.K.McGowan, G.Ter-Akopyan, Y.Oganesyan

Band Crossing Observed in Neutron-Rich Pd Isotopes via Spontaneous Fission of 252Cf

RADIOACTIVITY 252Cf(SF); measured Iγ, γγ-, nγ-coin. 112,114,116Pd deduced levels, J, π, band crossing. Interacting boson and cranked shell models.

doi: 10.1103/PhysRevC.48.566
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1993BU12      J.Phys.(London) G19, L121 (1993)

K.Butler-Moore, J.H.Hamilton, A.V.Ramayya, S.Zhu, X.Zhao, W.C.Ma, J.Kormicki, J.K.Deng, W.B.Gao, J.D.Cole, R.Aryaeinejad, I.Y.Lee, N.R.Johnson, F.K.McGowan, G.Ter-Akopyan, Y.Oganesyan

Levels in 136Te and New High-Spin States in Neutron-Rich N = 84 Isotones

RADIOACTIVITY 252Cf(SF); measured γγ-, γγγ-coin. 140,138Xe, 140Ba, 136Te deduced levels, J, π, transition Iγ.

doi: 10.1088/0954-3899/19/7/004
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1993CU02      Phys.Rev. C47, 1298 (1993)

D.M.Cullen, I.Y.Lee, C.Baktash, J.D.Garrett, N.R.Johnson, F.K.McGowan, D.F.Winchell

X-Ray Yields of Superdeformed States in 193Hg

NUCLEAR REACTIONS 150Nd(48Ca, 5n), E=213 MeV; measured Eγ, Iγ, X-ray spectra, γ(X-ray)-, γγ-coin. 193Hg deduced superdeformed, normal deformed bands X-ray yields.

doi: 10.1103/PhysRevC.47.1298
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1993DE42      Phys.Lett. 319B, 63 (1993)

J.K.Deng, W.C.Ma, J.H.Hamilton, J.D.Garrett, C.Baktash, D.M.Cullen, N.R.Johnson, I.Y.Lee, F.K.McGowan, S.Pilotte, C.H.Yu, W.Nazarewicz

High-Spin Single-Particle States in 193Hg

NUCLEAR REACTIONS 150Nd(48Ca, 5n), E=210 MeV; measured γγγ-, higher fold-coin, DCO ratios. 193Hg deduced levels, J, π, band structure.

doi: 10.1016/0370-2693(93)90782-D
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1993JO06      Nucl.Phys. A557, 347c (1993)

N.R.Johnson, J.C.Wells, F.K.McGowan, D.F.Winchell, I.Y.Lee, P.Semmes, C.Baktash, J.D.Garrett, Y.A.Akovali, R.Bengtsson, R.Wyss, W.C.Ma, W.B.Gao, C.H.Yu, S.Pilotte

Test of Predicted Deformation-Driving Effects in 173Re

NUCLEAR REACTIONS 150Sm(27Al, 4n), E=125 MeV; measured γγ-coin. 173Re levels deduced T1/2, B(λ), ratios, quadrupole moment, transition energy.

doi: 10.1016/0375-9474(93)90553-A
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1993LE03      Nucl.Phys. A554, 485 (1993)

I.Y.Lee, H.Xie, C.Baktash, W.B.Gao, J.D.Garrett, N.R.Johnson, F.K.McGowan, R.Wyss

Lifetime Measurements for Continuum Gamma Rays in 164Yb and 170Hf

NUCLEAR REACTIONS 130Te(44Ca, 4n), E=195 MeV; 124Sn(44Ca, 4n), E=189 MeV; measured γγ-coin, γγ(θ). 164Yb, 170Hf deduced continuum states, T1/2. Enriched targets, array of Compton suppressed Ge detectors.

doi: 10.1016/0375-9474(93)90231-L
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1993MA02      Phys.Rev. C47, R5 (1993)

W.C.Ma, J.H.Hamilton, A.V.Ramayya, L.Chaturvedi, J.K.Deng, W.B.Gao, Y.R.Jiang, J.Kormicki, X.W.Zhao, N.R.Johnson, J.D.Garrett, I.Y.Lee, C.Baktash, F.K.McGowan, W.Nazarewicz, R.Wyss

First Evidence for States in Hg Nuclei with Deformations between Normal and Super Deformation

NUCLEAR REACTIONS 154Gd(36S, 4n), E=159-175 MeV; measured γγ-coin. 186Hg deduced levels, J, π, T1/2, deformation between normal and superdeformed, configuration, Iγ, quadrupole moments.

doi: 10.1103/PhysRevC.47.R5
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1992HA44      High Energy Phys. and Nucl.Phys. (China) 16, 539 (1992)

J.H.Hamilton, A.V.Ramayya, L.Chaturvedi, J.Kormicki, X.W.Zhao, I.Y.Lee, N.R.Johnson, C.Backtach, F.K.McGowan, M.L.Halbert, J.D.Cole

Research on High Spin States in 68Ge, 65Ga and 67Ga


1992JI03      Phys.Lett. 277B, 387 (1992)

H.-Q.Jin, L.L.Riedinger, C.-H.Yu, W.Nazarewicz, R.Wyss, J.-Y.Zhang, C.Baktash, J.D.Garrett, N.R.Johnson, I.Y.Lee, F.K.McGowan

Electromagnetic Properties of the [303(bar)] (5/2), (7/2) Pseudo-Spin Doublet in 175Re

NUCLEAR REACTIONS 156Gd(23Na, 4n), E=111 MeV; measured γγ-coin. 175Re deduced levels, J, π, configurations, B(λ) ratios. Pseudo SU(3) coupling scheme, asymptotic limit.

doi: 10.1016/0370-2693(92)91799-F
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1992LE12      Phys.Rev. C46, 597 (1992)

I.Y.Lee, C.Baktash, J.R.Beene, M.L.Halbert, D.C.Hensley, N.R.Johnson, F.K.McGowan, M.A.Riley, D.G.Sarantites

Quantitative Studies of Continuum Gamma-Ray Correlations in 170Hf

NUCLEAR REACTIONS 130Te(44Ca, 4n), E=195.5 MeV; measured γγ-energy correlation, continuum spectra in 170Hf; deduced energy correlation function width, rotational damping width.

doi: 10.1103/PhysRevC.46.597
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1992MC02      Nucl.Phys. A539, 276 (1992)

F.K.McGowan, N.R.Johnson, C.Baktash, I.Y.Lee, Y.Schutz, J.C.Wells, A.Larabee

Transition Quadrupole Moments of High-Spin States in 162,163Yb

NUCLEAR REACTIONS 116Cd(50Ti, xn), E=215 MeV; measured Eγ, Iγ, Doppler shift. 162Yb deduced levels, J, π, B(λ), band structure, T1/2, quadrupole moments. 163Yb deduced levels, J, π, quadrupole moments, band structure, T1/2. Cranked Hartree-Fock-Bogoliubov calculations.

doi: 10.1016/0375-9474(92)90271-K
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1992ZH42      Rev.Mex.Fis. 38, 53 (1992)

S.Zhu, X.Zhao, J.H.Hamilton, A.V.Ramayya, Q.Lu, W.-C.Ma, L.K.Peker, J.Kormicki, H.Xie, W.B.Gao, J.K.Deng, I.Y.Lee, N.R.Johnson, F.K.McGowan, C.E.Bemis, J.D.Cole, R.Aryaeinejad, G.M.Ter-Akopian, Yu.Ts.Oganessian

Higher Spin States in Neutron Rich Nuclei


1991BA12      Phys.Lett. 255B, 174 (1991)

C.Baktash, G.Garcia-Bermudez, D.G.Sarantites, W.Nazarewicz, V.Abenante, J.R.Beene, H.C.Griffin, M.L.Halbert, D.C.Hensley, N.R.Johnson, I.Y.Lee, F.K.McGowan, M.A.Riley, D.W.Stracener, T.M.Semkow, A.Virtanen

Shape Coexistence and Disappearance of Pairing Correlations in 82Sr

NUCLEAR REACTIONS 52Cr(34S, 2n2p), E=130 MeV; measured γγ-coin. 82Sr deduced levels, J, π, band structure, shape features. Woods-Saxon cranking calculations.

doi: 10.1016/0370-2693(91)90232-F
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1991CH14      Phys.Rev. C43, 2541 (1991)

L.Chaturvedi, X.Zhao, A.V.Ramayya, J.H.Hamilton, J.Kormicki, S.Zhu, C.Girit, H.Xie, W.-B.Gao, Y.-R.Jiang, A.Petrovici, K.W.Schmid, A.Faessler, N.R.Johnson, C.Baktash, I.Y.Lee, F.K.McGowan, M.L.Halbert, M.A.Riley, J.H.McNeill, M.O.Kortelahti, J.D.Cole, R.B.Piercey, H.Q.Jin

Tests of Microscopic Calculations of Multiple Band Structures and Large Deformations in 68Ge and 72Se

NUCLEAR REACTIONS 46Ti(25Mg, n2p), E=68 MeV; 47Ti(28Si, X), E=95 MeV; measured γγ-coin. 68Ge, 72Se deduced levels, J, π, band structure, deformation features.

doi: 10.1103/PhysRevC.43.2541
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1991GA18      Phys.Rev. C44, 1380 (1991)

W.B.Gao, I.Y.Lee, C.Baktash, R.Wyss, J.H.Hamilton, C.M.Steele, C.H.Yu, N.R.Johnson, F.K.McGowan

High Spin Spectroscopy and Lifetime Measurements in 169Hf

NUCLEAR REACTIONS 130Te(44Ca, 5n), E=195 MeV; measured γγ-coin, DSA. 169Hf deduced levels, J, π, T1/2, transition quadrupole moments, yrast band, γ-branching ratio.

doi: 10.1103/PhysRevC.44.1380
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1991MC04      Nucl.Phys. A530, 490 (1991)

F.K.McGowan, N.R.Johnson, I.Y.Lee, C.Baktash, J.W.McConnell, M.N.Rao, M.Oshima, J.C.Wells, A.Larabee, L.L.Riedinger, R.Bengtsson, Z.Xing

Transition Quadrupole Moments of High-Spin States in 172W and Their Implications for the Interpretation of Band Crossings in the Light Isotopes of W to Pt

NUCLEAR REACTIONS 124Sn(52Cr, 4n), E=225 MeV; measured γγ-coin, γ-spectra, Doppler shift recoil-distance. 172W deduced levels, J, π, T1/2, band structure, B(E1).

NUCLEAR STRUCTURE 172W; calculated total routhian surface, deformation parameters β2, β4. Cranked HFB.

doi: 10.1016/0375-9474(91)90815-N
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1991ZH28      Chin.J.Nucl.Phys. 13, No 4, 331 (1991)

S.Zhu, L.Chaturvedi, J.H.Hamilton, A.V.Ramayya, C.Girit, J.Kormicki, X.W.Zhao, W.B.Gao, N.R.Johnson, I.Y.Lee, C.Baktash, F.K.McGowan, M.L.Halbert, M.Riley, M.O.Kortelahti, J.D.Cole

High Spin States in 65Ga, 67Ga and Their Collective Behavior at High Angular Momenta

NUCLEAR REACTIONS 46Ti(25Mg, 3n3p), (25Mg, n3p), E=68 MeV; measured γγ-coin, background subtraction. 65,67Ga deduced levels, J, π, band structure, collective features. In-beam γ-spectroscopy.


1990BA47      Nucl.Phys. A520, 555c (1990)

C.Baktash, M.L.Halbert, D.C.Hensley, N.R.Johnson, I.Y.Lee, J.W.McConnell, F.K.McGowan

Study of Spin-Temperature Efects using Energy-Ordered Continuum Gamma-Ray Spectroscopy Technique

NUCLEAR REACTIONS 130Te(44Ca, 4n), E=195.5 MeV; measured γγ-energy correlation; deduced rotational damping vs spin temperature. 170Hf deduced collective E2, statistical E1, M1, M2 strength function.

doi: 10.1016/0375-9474(90)91174-P
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1990CA22      Nucl.Phys. A513, 125 (1990)

M.P.Carpenter, C.R.Bingham, L.H.Courtney, V.P.Janzen, A.J.Larabee, Z.-M.Liu, L.L.Riedinger, W.Schmitz, R.Bengtsson, T.Bengtsson, W.Nazarewicz, J.-Y.Zhang, J.K.Johansson, D.G.Popescu, J.C.Waddington, C.Baktash, M.L.Halbert, N.R.Johnson, I.Y.Lee, Y.S.Schutz, J.Nyberg, A.Johnson, R.Wyss, J.Dubuc, G.Kajrys, S.Monaro, S.Pilotte, K.Honkanen, D.G.Sarantites, D.R.Haenni

Alignment Processes and Shape Variation in 184Pt

NUCLEAR REACTIONS 154Sm(34S, 4n), E=163 MeV; 172Yb(16O, 4n), E=91 MeV; measured Eγ, Iγ, γ(θ), γγ-coin. 184Pt deduced levels, J, π, γ-branching. Enriched targets, array of Compton-suppression Ge detectors. Total routhian surface calculations.

doi: 10.1016/0375-9474(90)90346-N
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1990DE44      Phys.Lett. 249B, 195 (1990)

H.Dejbakhsh, T.M.Cormier, X.Zhao, A.V.Ramayya, L.Chaturvedi, S.Zhu, J.Kormicki, J.H.Hamilton, M.Satteson, I.Y.Lee, C.Baktash, F.K.McGowan, N.R.Johnson, J.D.Cole, E.F.Zganjar

Signature of the Shape Coexistence in 72Kr: Discontinuities of the moment of inertia at low spin

NUCLEAR REACTIONS 40Ca(35Cl, 2np), E=95 MeV; measured γγ-coin. 72Kr deduced levels, J, π, band structure, shape features.

doi: 10.1016/0370-2693(90)91242-4
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1990NI10      Nucl.Phys. A520, 153c (1990)

N.G.Nicolis, D.G.Sarantites, C.Baktash, V.Abenante, L.A.Adler, J.R.Beene, F.A.Dilmanian, G.Garcia-Bermudez, H.C.Griffin, M.L.Halbert, D.C.Hensley, N.R.Johnson, I.Y.Lee, Z.Majka, F.K.McGowan, M.A.Riley, T.M.Semkow, D.W.Stracener, A.Virtanen

Alpha-Particle Emission as a Probe of Nuclear Shapes and Structure Effects in Proton Evaporation Spectra

NUCLEAR REACTIONS 52Cr(34S, 2n2p), E=130 MeV; measured pγ-coin, proton spectra. 105Pd(32S, 2n2p), E=155 MeV; analyzed data; deduced shape, structure effects role.

doi: 10.1016/0375-9474(90)91143-F
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1990NY02      Nucl.Phys. A511, 92 (1990)

J.Nyberg, A.Johnson, M.P.Carpenter, C.R.Bingham, L.H.Courtney, V.P.Janzen, S.Juutinen, A.J.Larabee, Z.-M.Liu, L.L.Riedinger, C.Baktash, M.L.Halbert, N.R.Johnson, I.Y.Lee, Y.Schutz, J.C.Waddington, D.G.Popescu

High-Spin States in 183Pt

NUCLEAR REACTIONS 154Sm(34S, 5n), E=153 MeV; 170Yb(16O, 3n), E=81-84 MeV; measured Eγ, Iγ(θ), Iγ, γγ(t), γγ(X-ray)-coin. 183Pt deduced levels, J, π, δ. Enriched targets, Ge(Compton suppressed) detectors, 4π NaI(Tl) ball. Calculated experimental routhians, aligned angular momentum, signature splitting, total routhian surfaces.

doi: 10.1016/0375-9474(90)90028-K
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1990SA04      J.Phys.(London) G16, L27 (1990)

M.Satteson, A.V.Ramayya, T.M.Cormier, H.E.Gove, L.Chaturvedi, X.Zhao, J.Kormicki, J.H.Hamilton, E.F.Zganjar, I.Y.Lee, C.Baktash, F.K.McGowan, N.R.Johnson, J.D.Cole, H.Dejbakhsh

Identification of Transitions in 73Kr and the Search for Large Oblate Deformation

NUCLEAR REACTIONS 40Ca(35Cl, np), E=95 MeV; measured Eγ, Iγ, γγ-coin. 73Kr deduced levels, J, π, band structure.

doi: 10.1088/0954-3899/16/2/002
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1990SA13      Phys.Rev.Lett. 64, 2129 (1990)

D.G.Sarantites, C.Baktash, N.G.Nicolis, G.Garcia-Bermudez, V.Abenante, J.R.Beene, N.R.Johnson, M.L.Halbert, D.C.Hensley, F.K.McGowan, H.C.Griffin, I.Y.Lee, Z.Majka, M.A.Riley, T.M.Semkow, D.W.Stracener, A.Virtanen

Nuclear-Structure Effects in Proton Evaporation Spectra

NUCLEAR REACTIONS 52Cr(34S, 2n2p), E=130 MeV; measured pγ-coin, proton spectra, pγ(θ). 82Sr deduced rotational band role in proton evaporation spectra.

doi: 10.1103/PhysRevLett.64.2129
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1989RI01      Phys.Rev. C39, 291 (1989)

M.A.Riley, Y.A.Akovali, C.Baktash, M.L.Halbert, D.C.Hensley, N.R.Johnson, I.Y.Lee, F.K.McGowan, A.Virtanen, L.H.Courtney, V.P.Janzen, L.L.Riedinger, L.Chaturvedi, J.Simpson

Irregularities at High Spin in the Odd-Odd Nucleus 158Tm

NUCLEAR REACTIONS 110Pd(51V, 3n), E=220 MeV; measured E(γ), I(γ), γγ-coin, γγ(θ). 158Tm deduced levels, J, π, rotational band characteristics. Cranked shell model calculations comparison.

doi: 10.1103/PhysRevC.39.291
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1989WE06      Phys.Rev. C40, 725 (1989)

J.C.Wells, N.R.Johnson, C.Baktash, I.Y.Lee, F.K.McGowan, M.A.Riley, A.Virtanen, J.Dudek

High-Spin Studies of 172,173Os: Complex alignment mechanism

NUCLEAR REACTIONS 144Nd(32S, 4n), E=162 MeV; 144Nd(32S, 3n), E=155-162 MeV; measured Eγ, Iγ, γγ-coin, DCO ratios. 173,172Os deduced levels, J, π, band structure. Hartree-Fock-Bogoliubov cranking model.

doi: 10.1103/PhysRevC.40.725
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1988FE01      Phys.Rev. C37, 101 (1988)

M.P.Fewell, N.R.Johnson, F.K.McGowan, J.S.Hattula, I.Y.Lee, C.Baktash, Y.Schutz, J.C.Wells, L.L.Riedinger, M.W.Guidry, S.C.Pancholi

Lifetimes of Yrast and Near-Yrast States of 159,160,161Yb

NUCLEAR REACTIONS 116Cd(48Ti, xn), E=205 MeV; 48Ti(116Cd, xn), E=495 MeV; measured Eγ, Iγ, total energy spectra, recoil distance. 159,160,161Yb deduced levels, J, π, sidefeeding Iγ, transition quadrupole moments, band structure.

doi: 10.1103/PhysRevC.37.101
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1988MC04      Phys.Rev.Lett. 61, 2818 (1988)

F.K.McGowan, N.R.Johnson, I.Y.Lee, C.Baktash

McGowan et al Reply

NUCLEAR STRUCTURE 172W; analyzed collectivity features.

doi: 10.1103/PhysRevLett.61.2818
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1987LE01      Phys.Rev. C35, 605 (1987)

I.Y.Lee, C.Baktash, J.R.Beene, M.P.Fewell, M.L.Halbert, N.R.Johnson, F.K.McGowan, W.T.Milner, H.J.Kim, R.O.Sayer, D.G.Sarantites

Distributions of the Total Energy and Multiplicity of Gamma Rays feeding the Discrete Yrast States in Heavy-Ion-Induced Fusion Reactions

NUCLEAR REACTIONS 150Sm(12C, 4n), (12C, 3n), E=65 MeV; 100Mo(34S, 4n), E=144 MeV; 70Zn(50Ti, 4n), (50Ti, 3n), E=170 MeV; measured γ-multiplicities, total energy distributions. 158,159Er, 130Ce, 116,117Te deduced entry state distribution width vs yrast transition spin. Ge, NaI detectors, spin spectrometer.

doi: 10.1103/PhysRevC.35.605
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1987MC01      Phys.Rev. C35, 968 (1987)

F.K.McGowan, N.R.Johnson, I.Y.Lee, W.T.Milner, C.Roulet, R.M.Diamond, F.S.Stephens, M.W.Guidry

Test of the Triaxial Rotor Model and the Interacting Boson-Fermion Approximation Model Description of Collective States in 193Ir

NUCLEAR REACTIONS 191,193Ir(40Ar, 40Ar'), E=160 MeV; 191,193Ir(136Xe, 136Xe'), E=617 MeV; measured Eγ, Iγ, relative γ-ray yields following Coulomb excitation. 191,193Ir deduced levels, J, π, K, B(E2). Enriched targets, parallel plate avalanche counters.

doi: 10.1103/PhysRevC.35.968
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1987SC01      Phys.Rev. C35, 348 (1987)

Y.Schutz, C.Baktash, I.Y.Lee, M.L.Halbert, D.C.Hensley, N.R.Johnson, M.Oshima, R.Ribas, J.C.Lisle, L.Adler, K.Honkanen, D.G.Sarantites, A.J.Larabee, J.X.Saladin

Search for Superdeformed Shapes in 144Gd

RADIOACTIVITY 144Gd(EC), (IT) [from 120Sn(28Si, 4n), E=145 MeV]; measured γγ-transition energy correlation; deduced moment of inertia, shape characteristics, no evidence for superdeformation. Germaniaum detectors.

doi: 10.1103/PhysRevC.35.348
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1987WE06      Phys.Rev. C36, 431 (1987)

J.C.Wells, N.R.Johnson, C.Baktash, I.Y.Lee, F.K.McGowan, M.N.Rao, L.L.Riedinger, V.Janzen, W.C.Ma, Shuxian Wen, Ze-Min Chen, P.B.Semmes, G.A.Leander, Y.S.Chen

Low-Frequency Anomaly in 172Os Moment of Inertia

NUCLEAR STRUCTURE 172Os; calculated dynamical moments of inertia. Cranked shell model, three-band-mixing calculations.

NUCLEAR REACTIONS 144Nd(32S, 4n), E=162 MeV; measured Eγ, Iγ, γγ-coin. 172Os deduced levels, yrast sequence moments of inertia, J, π. Cranked shell model, three-band mixing calculations.

doi: 10.1103/PhysRevC.36.431
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1986MC01      Phys.Rev. C33, 855 (1986)

F.K.McGowan, N.R.Johnson, I.Y.Lee, W.T.Milner, C.Roulet, J.Hattula, M.P.Fewell, Y.A.Ellis-Akovali, R.M.Diamond, F.S.Stephens, M.W.Guidry

Test of the Triaxial Rotor Model and the Interacting Boson Fermion Approximation Model Description of Collective States in 191Ir

NUCLEAR REACTIONS 191Ir(40Ar, 40Ar'), E=160 MeV; 191Ir(136Xe, 136Xe'), E=617 MeV; measured Eγ, Iγ(θ) following Coulomb excitation. 191Ir deduced levels, J, π, B(λ).

doi: 10.1103/PhysRevC.33.855
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1986OS02      Phys.Rev. C33, 1988 (1986)

M.Oshima, N.R.Johnson, F.K.McGowan, C.Baktash, I.Y.Lee, Y.Schutz, R.V.Ribas, J.C.Wells

Evolving Collectivity at High Spins in 157Er, 158Er, and 159Er

NUCLEAR REACTIONS 128Te(34S, xn), E=155 MeV; measured Eγ, Iγ, γγ-coin, Doppler shift recoil distance method. 157,158,159Er deduced levels, J, π, γ-branching, T1/2, transition quadrupole moments, yrast bands.

doi: 10.1103/PhysRevC.33.1988
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1986RA07      Phys.Rev.Lett. 57, 667 (1986)

M.N.Rao, N.R.Johnson, F.K.McGowan, I.Y.Lee, C.Baktash, M.Oshima, J.W.McConnell, J.C.Wells, A.Larabee, L.L.Riedinger, R.Bengtsson, Z.Xing, Y.S.Chen, P.B.Semmes, G.A.Leander

Loss of Collectivity at High Spin in 172W and a Three-Band Interpretation of First Yrast Upbends

NUCLEAR REACTIONS 124Sn(52Cr, 4n), E=230 MeV; measured γγ-coin, Doppler shift recoil distance. 172W deduced levels, J, π, T1/2, yrast sequence, dynamical moment of inertia, configuration, transition quadrupole moments.

doi: 10.1103/PhysRevLett.57.667
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1986SE07      Phys.Rev. C34, 523 (1986)

T.M.Semkow, D.G.Sarantites, K.Honkanen, V.Abenante, L.A.Adler, C.Baktash, N.R.Johnson, I.Y.Lee, M.Oshima, Y.Schutz, Y.S.Chen, J.X.Saladin, C.Y.Chen, O.Dietzsch, A.J.Larabee, L.L.Riedinger, H.C.Griffin

Spectroscopic Study of the High-Spin States in 135Pr

NUCLEAR STRUCTURE 135Pr; calculated levels, alignments, crossing frequencies. Cranked shell model.

NUCLEAR REACTIONS 120Sn(19F, 4n), E=91 MeV; measured Eγ, Iγ, γγ(θ). 135Pr deduced levels, J, π, alignments, crossing frequencies, signature splittings, γ-deformation parameter. Cranked shell model comparison.

doi: 10.1103/PhysRevC.34.523
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1985BA06      Phys.Rev.Lett. 54, 978 (1985)

C.Baktash, Y.Schutz, I.Y.Lee, F.K.McGowan, N.R.Johnson, M.L.Halbert, D.C.Hensley, M.P.Fewell, L.Courtney, A.J.Larabee, L.L.Riedinger, A.W.Sunyar, E.der Mateosian, O.C.Kistner, D.G.Sarantites

Quasivibrational Bands at High Spins in 158Yb

NUCLEAR REACTIONS 98Mo(64Ni, 4n), E=285 MeV; 144Sm(18O, 4n), E=100 MeV; 142Nd(20Ne, 4n), E=115 MeV; measured γγ-coin, γγ(θ), γ(θ). 158Yb deduced levels, J, π, γ-branching, moment of inertia, band structure.

doi: 10.1103/PhysRevLett.54.978
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1985CA12      Phys.Rev. C31, 1049 (1985)

J.L.S.Carvalho, F.M.Bernthal, R.M.Ronningen, N.R.Johnson, J.S.Hattula, I.Y.Lee, M.P.Fewell, L.L.Riedinger, J.C.Wells

High Spin States in 128Ce

NUCLEAR REACTIONS 112Cd(20Ne, 4n), E=103 MeV; measured γγ-coin, γ(θ). 128Ce deduced levels, J, π, γ-branching, backbending plots. Compared with theory.

doi: 10.1103/PhysRevC.31.1049
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1985FE02      Phys.Rev. C31, 1057 (1985)

M.P.Fewell, N.R.Johnson, F.K.McGowan, J.S.Hattula, I.Y.Lee, C.Baktash, Y.Schutz, J.C.Wells, L.L.Riedinger, M.W.Guidry, S.C.Pancholi

Collectivity of 160,161Yb at High Spin

NUCLEAR REACTIONS 116Cd(48Ti, xn), 48Ti(116Cd, xn), E(cm)=145 MeV; measured γ-spectra, recoil distance. 160,161Yb levels deduced T1/2, γ-branching, quadrupole moments, yrast sequence, quasiparticle alignment role, induced triaxiality.

doi: 10.1103/PhysRevC.31.1057
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1984GU22      Nucl.Phys. A430, 485 (1984)

M.W.Guidry, R.E.Neese, C.R.Bingham, L.L.Riedinger, J.A.Vrba, I.Y.Lee, N.R.Johnson, G.R.Satchler, P.A.Butler, R.Donangelo, J.O.Rasmussen, D.L.Hillis, H.H.Kluge

Heavy-Ion Inelastic Scattering from Deformed Nuclei

NUCLEAR REACTIONS 162Dy(16O, 16O'), E=50-68 MeV; 232Th(86Kr, 86Kr'), E=350-450 MeV; 160Gd(40Ar, 40Ar'), E=100-170 MeV; 162Dy(40Ar, 40Ar'), E=120-170 MeV; 180Hf(40Ar, 40Ar'), E=135-175 MeV; 156Gd, 164Dy(40Ar, 40Ar'), E=120-160 MeV; measured γ(particle)-coin, σ(E); deduced ion-ion potentials. Gamma spectroscopy. Classical limit.

doi: 10.1016/0375-9474(84)90050-2
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1984LA11      Phys.Rev. C29, 1934 (1984)

A.J.Larabee, L.H.Courtney, S.Frauendorf, L.L.Riedinger, J.C.Waddington, M.P.Fewell, N.R.Johnson, I.Y.Lee, F.K.McGowan

Shape Effects in h11/2 and g7/2 Bands in 159Tm

NUCLEAR REACTIONS 148Sm(14N, 3n), 141Pr(22Ne, 4n), E not given; measured γγ-, γγγ-coin, γ(θ), γγ(θ). 159Tm deduced levels, J, π, γ-branching, B(λ) ratios, rotational band structure, δ, backbend characteristics, configuration.

doi: 10.1103/PhysRevC.29.1934
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1984WE17      Phys.Rev. C30, 1532 (1984)

J.C.Wells, N.R.Johnson, J.Hattula, M.P.Fewell, D.R.Haenni, I.Y.Lee, F.K.McGowan, J.W.Johnson, L.L.Riedinger

Evidence for Collective Behavior in 128Ce from Lifetime Measurements

NUCLEAR REACTIONS 92Zr(40Ar, 4n), E=159 MeV; measured Eγ, Iγ, γ(t), Doppler shift, recoil. 128Ce deduced yrast level T1/2, J, π, band characteristics, B(E2). Cranked self-consistent theory.

doi: 10.1103/PhysRevC.30.1532
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1982JO04      Phys.Rev. C26, 1004 (1982)

N.R.Johnson, I.Y.Lee, F.K.McGowan, T.T.Sugihara, S.W.Yates, M.W.Guidry

Lifetimes of States in the Transitional Nucleus 152Gd

NUCLEAR REACTIONS 152Gd(40Ar, 40Ar'), E=147.2 MeV; measured Coulomb excitation, DSA, recoil. 152Gd levels deduced T1/2, B(E2).

doi: 10.1103/PhysRevC.26.1004
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1982LE07      Phys.Rev. C25, 1865 (1982)

I.Y.Lee, N.R.Johnson, F.K.McGowan, R.L.Robinson, M.W.Guidry, L.L.Riedinger, S.W.Yates

Structure of Multiphonon Vibrational States in 108,110Pd

NUCLEAR REACTIONS 108,110Pd(40Ar, 40Ar'), E=120, 129.1 MeV; measured Eγ, Iγ, γ-yields, Coulomb excitation, γ(θ). 108,110Pd deduced levels, γ-branching, B(E2), multiphonon vibrational character. Boson expansion, interacting boson model.

doi: 10.1103/PhysRevC.25.1865
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1981LE11      Phys.Rev. C24, 293 (1981)

I.Y.Lee, N.R.Johnson, F.K.McGowan, G.R.Young, M.W.Guidry, S.W.Yates

Isomeric and High-Spin States of 94Tc and the Search for Yrast Isomers near N ≈ 50

NUCLEAR REACTIONS 76Ge, 78Se(20Ne, xnyp), E=80.9 MeV; 89Y, 93Nb(10B, xnyp), E=52, 58.4, 62.8 MeV; measured Eγ, Iγ, γγ-, γ(X-ray)-coin, γγ(t). 94Tc deduced levels, isomer T1/2, yrast transition sequence.

doi: 10.1103/PhysRevC.24.293
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1980HJ01      Phys.Rev.Lett. 45, 878 (1980)

S.A.Hjorth, I.Y.Lee, J.R.Beene, C.Roulet, D.R.Haenni, N.R.Johnson, F.E.Obenshain, G.R.Young

Interpretation of the 21-ns Isomer in 190Hg as (νi13/2)2 from a g-Factor Measurement

NUCLEAR REACTIONS 181Ta(14N, 5n), E=94 MeV; measured Iγ(θ, H, t). 190Hg level deduced g, configuration, T1/2. Shell model.

doi: 10.1103/PhysRevLett.45.878
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1980JO08      Phys.Rev. C22, 2416 (1980)

N.R.Johnson, M.W.Guidry, R.J.Sturm, E.Eichler, R.O.Sayer, D.C.Hensley, N.C.Singhal

Lifetimes of Rotational States in 154Sm

NUCLEAR REACTIONS 154Sm(40Ar, 40Ar'), E=146, 153 MeV; measured Doppler shift, recoil, Coulomb excitation, Eγ, Iγ. 154Sm levels deduced T1/2, B(E2). Ridid rotor model.

doi: 10.1103/PhysRevC.22.2416
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1980YA03      Phys.Rev. C21, 2366 (1980)

S.W.Yates, I.Y.Lee, N.R.Johnson, E.Eichler, L.L.Riedinger, M.W.Guidry, A.C.Kahler, D.Cline, R.S.Simon, P.A.Butler, P.Colombani, F.S.Stephens, R.M.Diamond, R.M.Ronningen, R.D.Hichwa, J.H.Hamilton, E.L.Robinson

High-Spin Properties of 164Er in the Multiple Band Crossing Region

NUCLEAR REACTIONS 150Nd(18O, 4n), E=69.6 MeV; 164Dy(α, 4n), E=51 MeV; 164Er(136Xe, 136Xe'γ), E=547, 612, 620 MeV; measured Eγ, Iγ, γγ-coin, Doppler-broadened lineshapes, multiple Coulomb excitation probabilities. 164Er deduced levels, J, π, T1/2, B(E2). Two quasiparticle plus rotor model.

doi: 10.1103/PhysRevC.21.2366
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1979GU15      Phys.Rev. C20, 1814 (1979)

M.W.Guidry, I.Y.Lee, N.R.Johnson, P.A.Butler, D.Cline, P.Colombani, R.M.Diamond, F.S.Stephens

Reduced Transition Probabilities and Energies of High-Spin States in 162Dy

NUCLEAR REACTIONS 162Dy(136Xe, 136Xe'), E(lab)=547, 612 MeV; measured T1/2, Eγ. 162Dy levels deduced B(E2).

doi: 10.1103/PhysRevC.20.1814
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1979HU01      Nucl.Phys. A321, 213 (1979)

P.Hubert, C.Roulet, H.Sergolle, P.Colombani, J.M.Lagrange, J.Vanhorenbeeck, N.R.Johnson

Coulomb Excitation Study of 182,184,186W Isotopes

NUCLEAR REACTIONS 182,184,186W(84Kr, 84Kr'γ), E=340 MeV; measured Coulomb excitation yields. 182,184,186W deduced energy levels, B(E2).

doi: 10.1016/0375-9474(79)90694-8
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1978GU03      Phys.Rev.Lett. 40, 1016 (1978)

M.W.Guidry, P.A.Butler, R.Donangelo, E.Grosse, Y.El Masri, L.Y.Lee, F.S.Stephens, R.M.Diamond, L.L.Riedinger, C.R.Bingham, A.C.Kahler, J.A.Vrba, E.L.Robinson, N.R.Johnson

Coulomb-Nuclear Interference for High-Spin States Excited by 86Kr, 40Ar, and 16O Projectiles

NUCLEAR REACTIONS 232Th(86Kr, 86Kr'γ), E=350-450 MeV; 238U(40Ar, 40Ar'γ), E=140-220 MeV; 162Dy(16O, 16O'γ), E=50-70 MeV; measured HI γ-coin; deduced Coulomb-nuclear interference.

doi: 10.1103/PhysRevLett.40.1016
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1978HU03      Phys.Rev. C17, 622 (1978)

P.Hubert, N.R.Johnson, E.Eichler

Lifetime Measurements and Multiple Coulomb Excitation in 162Dy

NUCLEAR REACTIONS 162Dy(40Ar, 40Ar'γ), E=148.6 MeV; measured recoil distance DSA, Coulomb excitation. 162Dy levels deduced T1/2, B(E2).

doi: 10.1103/PhysRevC.17.622
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1978JO02      Phys.Rev.Lett. 40, 151 (1978)

N.R.Johnson, D.Cline, S.W.Yates, F.S.Stephens, L.L.Riedinger, R.M.Ronningen

Multiple Band Crossings in 164Er

NUCLEAR REACTIONS 150Nd(18O, 4nγ), E=70 MeV; measured Eγ, Iγ, γγ-coin. 164Er deduced levels, J, π, K.

doi: 10.1103/PhysRevLett.40.151
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1978KA06      Phys.Lett. 72B, 443 (1978)

A.C.Kahler, L.L.Riedinger, N.R.Johnson, R.L.Robinson, E.F.Zganjar, A.Visvanathan, D.R.Zolnowski, M.B.Hughes, T.T.Sugihara

Contrasting Behavior of h9/2 and i13/2 Bands in 185Au

NUCLEAR REACTIONS 169Tm(20Ne, 4nγ), E=98, 103 MeV; 175Lu(16O, 6nγ), E=113 MeV; measured γγ(t), γ(θ), I(ce). 185Au deduced levels, K, J, π.

doi: 10.1016/0370-2693(78)90729-3
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1978SA03      Phys.Rev. C17, 1026 (1978)

R.O.Sayer, E.Eichler, N.C.Singhal, R.Sturm, N.R.Johnson, M.W.Guidry

Recoil-Distance Measurement of Lifetimes of Rotational States in 164Dy

NUCLEAR REACTIONS 164Dy(40Ar, 40Ar'), E=152.6 MeV; measured Eγ, recoil distance DSA. 164Dy levels deduced T1/2, B(E2).

doi: 10.1103/PhysRevC.17.1026
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1978SI12      ATOMKI Kozlem. 20, 207 (1978)

N.C.Singhal, R.O.Sayer, J.H.Hamilton, A.V.Ramayya, W.T.Milner, R.L.Robinson, N.R.Johnson, G.J.Smith

Recoil Distance Lifetime Measurements in 72Se

NUCLEAR REACTIONS 58Ni(16O, 2p), E=44-46 MeV; measured DSA. 72Se yrast levels deduced T1/2, B(E2), rms deformation β2.


1978YA02      Phys.Rev. C17, 634 (1978)

S.W.Yates, N.R.Johnson, L.L.Riedinger, A.C.Kahler

Lifetimes of Ground-Band States in 150Nd

NUCLEAR REACTIONS 150Nd(40Ar, 40Ar'γ), E=149 MeV; measured recoil distance DSA, Coulomb excitation. 150Nd levels deduced T1/2, B(E2).

doi: 10.1103/PhysRevC.17.634
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1977JO05      Phys.Rev. C15, 1325 (1977)

N.R.Johnson, P.P.Hubert, E.Eichler, D.G.Sarantites, J.Urbon, S.W.Yates, T.Lindblad

Lifetimes of Ground-Band States in 192Pt and 194Pt

NUCLEAR REACTIONS 192,194Pt(40Ar, 40Ar'γ), E=149 MeV; measured Coulomb excitation, Doppler shift recoil distance. 192,194Pt levels deduced T1/2, B(E2).

doi: 10.1103/PhysRevC.15.1325
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1976GU06      Phys.Rev. C13, 1164 (1976)

M.W.Guidry, R.J.Sturm, N.R.Johnson, E.Eichler, G.D.O'Kelley, N.C.Singhal, R.O.Sayer

Recoil Distance Lifetimes of Rotational States in 236U

NUCLEAR REACTIONS 236U(40Ar, 40Ar'γ), E=153, 155 MeV; measured Coulomb excitation. 236U levels deduced T1/2, B(E2), quadrupole moment.

doi: 10.1103/PhysRevC.13.1164
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1976GU12      Nucl.Phys. A266, 228 (1976)

M.W.Guidry, P.A.Butler, P.Colombani, I.Y.Lee, D.Ward, R.M.Diamond, E.Eichler, N.R.Johnson, R.Sturm

Reduced Transition Probabilities for High-Spin States in 232Th

NUCLEAR REACTIONS 232Th(84Kr, 84Kr'γ), E=385 MeV; 232Th(136Xe, 136Xe'γ), E=595, 623 MeV; measured recoil distance, Doppler broadened lineshape, Coulomb excitation yields. 232Th 6+-18+ levels deduced T1/2, B(E2). Results compared with theory.

doi: 10.1016/0375-9474(76)90292-X
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1976LE18      Phys.Rev.Lett. 37, 420 (1976)

I.Y.Lee, D.Cline, R.S.Simon, P.A.Butler, P.Colombani, M.W.Guidry, F.S.Stephens, R.M.Diamond, N.R.Johnson, E.Eichler

Coulomb Excitation into the Backbend Region of 164Er

NUCLEAR REACTIONS 164Er(136Xe, 136Xe'γ), E=612, 547 MeV; measured multiple Coulomb excitation, 136Xe'γ-coin. 164Dy(α, 4n), E=51 MeV; measured Eγ, Iγ, γγ-coin. 164Er levels deduced B(E2), backbending.

doi: 10.1103/PhysRevLett.37.420
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1976SA23      Phys.Rev. C14, 2138 (1976)

D.G.Sarantites, J.H.Barker, M.L.Halbert, D.C.Hensley, R.A.Dayras, E.Eichler, N.R.Johnson, S.A.Gronemeyer

Gamma-Ray Multiplicities in Evaporation Residues Formed in Bombardments of 150Nd by 20Ne

NUCLEAR REACTIONS 150Nd(20Ne, xnγ), (20Ne, xnαγ), E=127.7-172.4 MeV; measured σ(E, Eγ), γ-ray multiplicities; deduced J-distributions in evaporation residues. Enriched target.

doi: 10.1103/PhysRevC.14.2138
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1976SA28      Nucl.Phys. A273, 61 (1976)

K.S.R.Sastry, A.V.Ramayya, R.S.Lee, J.H.Hamilton, R.L.Mlekodaj, N.R.Johnson

Gyromagnetic Ratio of the First 2+ Excited State in 126Xe

RADIOACTIVITY 126I; measured γγ(θ, H, t) implanted in Fe. 126Xe level deduced g-factor.

doi: 10.1016/0375-9474(76)90300-6
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1976YA11      J.Phys.Soc.Jap. 41, 1843 (1976)

H.Yamada, T.Katoh, M.Fujioka, M.Sekikawa, S.H.Ahn, J.H.Hamilton, N.R.Johnson, J.J.Pinajian

Electric Monopole Transitions from Excited 0+ States in 156Gd

RADIOACTIVITY 156Eu; measured Eγ, E(ce), I(ce), T1/2; deduced ICC. 156Gd deduced levels, J, π, λ. Enriched target.

doi: 10.1143/JPSJ.41.1843
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1975GU21      Phys.Rev. C12, 1937 (1975)

M.W.Guidry, E.Eichler, N.R.Johnson, G.D.O'Kelley, R.J.Sturm, R.O.Sayer

Sign of the E4 Moment in 236U by Multiple Coulomb Excitation with 40Ar Ions

NUCLEAR REACTIONS 236U(40Ar, 40Ar'), E=145.8, 152.4 MeV; measured multiple coulomb excitation. 236U levels deduced M(E4), sign of E4 moment.

doi: 10.1103/PhysRevC.12.1937
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1975JO07      Phys.Rev. C12, 1927 (1975)

N.R.Johnson, R.J.Sturm, E.Eichler, M.W.Guidry, G.D.O'Kelley, R.O.Sayer, D.C.Hensley, N.C.Singhal, J.H.Hamilton

Lifetimes of Rotational States in 232Th

NUCLEAR REACTIONS 232Th(40Ar, 40Ar'γ), E=152 MeV; measured recoil-distance DSA, 40Ar'γ-coin. 232Th levels deduced T1/2, B(E2). Coulomb excitation.

doi: 10.1103/PhysRevC.12.1927
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