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NSR database version of May 10, 2024.

Search: Author = P.Semmes

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2003KA04      Phys.Rev.Lett. 90, 012502 (2003)

M.Karny, R.K.Grzywacz, J.C.Batchelder, C.R.Bingham, C.J.Gross, K.Hagino, J.H.Hamilton, Z.Janas, W.D.Kulp, J.W.McConnell, M.Momayezi, A.Piechaczek, K.P.Rykaczewski, P.A.Semmes, M.N.Tantawy, J.A.Winger, C.H.Yu, E.F.Zganjar

Fine Structure in Proton Emission from 145Tm Discovered with Digital Signal Processing

RADIOACTIVITY 145Tm(p) [from 92Mo(58Ni, 4np)]; measured Ep, T1/2; deduced fine structure in proton decay, branching ratio. 144Er deduced level, J, π, deformation. 145Tm deduced configuration. Digital signal processing. Particle-core vibration coupling model analysis.

doi: 10.1103/PhysRevLett.90.012502
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2002PE05      Phys.Rev. C65, 054324 (2002)

C.M.Petrache, G.Lo Bianco, D.Bazzacco, S.Lunardi, R.Menegazzo, M.Nespolo, G.de Angelis, N.Blasi, V.I.Dimitrov, S.Frauendorf, P.Semmes, J.-Y.Zhang

Observation of a Doublet Band in the Nucleus 128Pr

NUCLEAR REACTIONS 92Mo(40Ca, n3p), E=190 MeV; measured Eγ, Iγ, γγ-, (charged particle)γ-, (recoil)γ-coin. 128Pr deduced high-spin levels, J, π, configurations, doublet band. Three-dimensional tilted-axis cranking model analysis.

doi: 10.1103/PhysRevC.65.054324
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2001HA47      Phys.Rev. C64, 031304 (2001)

D.J.Hartley, L.L.Riedinger, M.A.Riley, D.L.Balabanski, F.G.Kondev, R.W.Laird, J.Pfohl, D.E.Archer, T.B.Brown, R.M.Clark, M.Devlin, P.Fallon, I.M.Hibbert, D.T.Joss, D.R.LaFosse, P.J.Nolan, N.J.O'Brien, E.S.Paul, D.G.Sarantites, R.K.Sheline, S.L.Shepherd, J.Simpson, R.Wadsworth, J.-Y.Zhang, P.B.Semmes, F.Donau

Detailed Spectroscopy of the Chiral-Twin Candidate Bands in 136Pm

NUCLEAR REACTIONS 105Pd(35Cl, 2n2p), E=173 MeV; measured Eγ, Iγ, γγ-, (charged particle)γ-coin. 136Pm deduced high-spin levels, J, π, configurations, B(M1), B(E2). Comparisons with neighboring nuclides, model predictions. Gammasphere, Microball arrays.

doi: 10.1103/PhysRevC.64.031304
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2001SE04      Nucl.Phys. A682, 239c (2001)


Proton Emission from Spherical and Near-Spherical Nuclei

NUCLEAR STRUCTURE 113Cs, 147Tm, 166Ir, 161Re; calculated proton decay T1/2. 151Lu; calculated level energies, configurations. Particle-core coupling.

doi: 10.1016/S0375-9474(00)00646-1
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2000GI01      Phys.Rev. C61, 014308 (2000)

T.N.Ginter, J.C.Batchelder, C.R.Bingham, C.J.Gross, R.Grzywacz, J.H.Hamilton, Z.Janas, M.Karny, S.H.Kim, J.F.Mas, J.W.McConnell, A.Piechaczek, A.V.Ramayya, K.Rykaczewski, P.B.Semmes, J.Szerypo, K.S.Toth, R.Wadsworth, C.-H.Yu, E.F.Zganjar

Proton Emission from 150Lu

RADIOACTIVITY 150,150mLu(p) [from 96Ru(58Ni, 3np)]; measured proton spectra, T1/2. Recoil mass spectrometer.

doi: 10.1103/PhysRevC.61.014308
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1999BI14      Phys.Rev. C59, R2984 (1999)

C.R.Bingham, J.C.Batchelder, K.Rykaczewski, K.S.Toth, C.-H.Yu, T.N.Ginter, C.J.Gross, R.Grzywacz, M.Karny, S.H.Kim, B.D.MacDonald, J.Mas, J.W.McConnell, P.B.Semmes, J.Szerypo, W.Weintraub, E.F.Zganjar

Identification of a Proton-Emitting Isomer in 151Lu

RADIOACTIVITY 151mLu(p) [from 96Ru(58Ni, 2np)]; measured Ep, T1/2. 151Lu deduced level, J, π, spectroscopic factor. Comparison with model calculations. Energy level systematics discussed.

doi: 10.1103/PhysRevC.59.R2984
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1999RE05      Phys.Rev. C59, 1351 (1999)

W.Reviol, L.L.Riedinger, X.Z.Wang, J.-Y.Zhang, H.J.Jensen, G.B.Hagemann, R.A.Bark, P.O.Tjom, S.Leoni, T.Lonnroth, H.Schnack-Petersen, T.Shizuma, J.Wrzesinski, P.B.Semmes

Residual Interactions and Tilted Rotation in Odd-Odd 164Tm

NUCLEAR REACTIONS 150Nd(19F, 5n), E=85 MeV; measured Eγ, Iγ(θ), γγ(t). 164Tm deduced high-spin levels, J, π, rotational bands, configurations, B(M1)/B(E2), isomeric states T1/2. Nordball array.

NUCLEAR STRUCTURE 164Tm; calculated rotational bands features, B(M1)/B(E2), signature splitting; deduced proton-neutron interaction role. Particle-rotor model, tilted-axis cranking model calculations.

doi: 10.1103/PhysRevC.59.1351
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1998BA20      Nucl.Phys. A630, 603 (1998)

R.A.Bark, H.Carlsson, S.J.Freeman, G.B.Hagemann, F.Ingebretsen, H.J.Jensen, T.Lonnroth, M.J.Piiparinen, I.Ragnarsson, H.Ryde, H.Schnack-Petersen, P.B.Semmes, P.O.Tjom

Band Structures and Proton-Neutron Interactions in 174Ta

NUCLEAR REACTIONS 160Gd(19F, 5n), E=103, 105 MeV; measured Eγ, Iγ, γγ-coin. 174Ta deduced high-spin levels, J, π, rotational band structure, configurations, Nilsson assignments, alignments, B(M1)/B(E2) ratios, signature inversion, proton-neutron interactions, crossing frequencies.

doi: 10.1016/S0375-9474(97)00650-7
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1998KA56      Phys.Rev. C58, 3228 (1998)

R.A.Kaye, L.A.Riley, G.Z.Solomon, S.L.Tabor, P.Semmes

Collective Behavior in 78Rb

NUCLEAR REACTIONS 58Ni(23Na, n2p), E=70 MeV; measured Eγ, Iγ, γγ-coin, Doppler-shifted spectra. 78Rb deduced levels T1/2, B(E2), B(M1). Recoil distance technique. Comparison with particle-rotor model calculations.

NUCLEAR STRUCTURE 78Rb; calculated B(M1). 78Rb, 74Br, 82Y; analyzed B(M1), B(E2). Particle-rotor model.

doi: 10.1103/PhysRevC.58.3228
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1998RU04      Phys.Rev. C58, 771 (1998)

D.Rupnik, E.F.Zganjar, J.L.Wood, P.B.Semmes, P.F.Mantica

Levels of 187Au: A detailed study of shape coexistence in an odd-mass nucleus

RADIOACTIVITY 187,187mHg(β+), (EC) [from 176Hf(16O, 5n)]; measured Eγ, Iγ, E(ce), I(ce), γγ-, (ce)γ-coin. 187Au deduced levels, J, π, ICC, diabatic configurations, E0 transitions. Particle plus triaxial rotor model comparison. Mass-separated source.

doi: 10.1103/PhysRevC.58.771
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1997AB27      Phys.Rev. C56, 1762 (1997); Erratum Phys.Rev. C58, 3011 (1998)

S.Aberg, P.B.Semmes, W.Nazarewicz

Spherical Proton Emitters

NUCLEAR STRUCTURE 105Sb, 109I, 112,113Cs, 146,147Tm, 150,151Lu, 156,157Ta, 160,161Re, 165,166,167Ir, 171Au, 185Bi; calculated proton emission T1/2, spectroscopic factors; deduced sensitivity to model parameters. 7B; calculated proton emission T1/2 vs Q(p), diffuseness. Several models considered, comparison with experiment.

doi: 10.1103/PhysRevC.56.1762
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1997BA45      Phys.Lett. 406B, 193 (1997); Erratum Phys.Lett. 416B, 453 (1998)

R.A.Bark, J.M.Espino, W.Reviol, P.B.Semmes, H.Carlsson, I.G.Bearden, G.B.Hagemann, H.J.Jensen, I.Ragnarsson, L.L.Riedinger, H.Ryde, P.O.Tjom

Signature Inversion in Semi-Decoupled Bands: Residual interaction between h9/2 protons and i13/2 neutrons

NUCLEAR REACTIONS 160Gd(19F, 5n), E=105 MeV; 150Nd(19F, 5n), E=85 MeV; 130Te(37Cl, 5n), E=166 MeV; measured Eγ, Iγ, γγ-coin; 162,164Tm, 174Ta deduced high-spin levels, J, π, signature inversion related features. Particle-rotor model analysis.

doi: 10.1016/S0370-2693(97)00676-X
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1997VA17      Phys.Lett. 410B, 103 (1997); Erratum Phys.Lett. 421B, 412 (1998)

P.G.Varmette, D.T.Shi, W.C.Ma, A.V.Ramayya, R.V.F.Janssens, C.N.Davids, J.H.Hamilton, I.Ahmad, H.Amro, B.R.S.Babu, B.Back, K.S.Bindra, D.J.Blumenthal, L.T.Brown, M.P.Carpenter, W.L.Croft, B.Crowell, S.M.Fischer, U.Garg, R.G.Henry, T.Ishii, T.L.Khoo, J.Kormicki, T.Lauritsen, C.J.Lister, D.Nisius, H.Penttila, R.B.Piercey, J.A.Winger, S.J.Zhu, P.B.Semmes

Identification of 181Hg and Shape Coexistence in Odd-A Hg Isotopes

NUCLEAR REACTIONS 144Sm(40Ar, 3n), E=175, 180 MeV; measured Eγ, Iγ, γγ-coin, (recoil)γ-coin, DCO ratios. 181Hg deduced levels, J, π, band structure, configurations, possible isomeric state. Comparisons with neighboring nuclei.

doi: 10.1016/S0370-2693(97)01035-6
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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
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1996PE01      Nucl.Phys. A597, 106 (1996)

C.M.Petrache, D.Bazzacco, S.Lunardi, C.Rossi Alvarez, G.de Angelis, M.De Poli, D.Bucurescu, C.A.Ur, P.B.Semmes, R.Wyss

Rotational Bands in the Doubly Odd Nucleus 134Pr

NUCLEAR REACTIONS 119Sn(19F, 4n), E=87 MeV; 110Pd(28Si, 3np), E=130 MeV; measured Eγ, Iγ, DCO ratios, γγ-coin, γ-multiplicity. 134Pr deduced levels, J, π, γ-branching, B(λ) ratios, experimental routhians, aligned angular momenta. Enriched targets, hyperpure Ge detectors, BGO suppression shields, 4π-BGO ball. Total routhian surface calculations, comparison with cranked shell model, semiclassical model and two-particle plus triaxial-rotor calculations.

doi: 10.1016/0375-9474(95)00416-5
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1996WO04      Nucl.Phys. A600, 283 (1996)

J.L.Wood, M.O.Kortelahti, E.F.Zganjar, P.B.Semmes

Decay of Mass-Separated 189mHg(8.7 min) and 189gHg(7.7 min) to 189Au

RADIOACTIVITY 189mHg(EC), (β+) [from 180Hf(16O, 7n), E=135 MeV]; 189gHg(EC), (β+) [from 181Ta(16O, 8n)189Tl, E=147 MeV]; measured Eγ, Iγ, I(ce), γγ(t), eγ(t), γ(X-ray)(t), e(X-ray)(t). 189Au deduced levels, J, π, ICC, γ multipolarity. Ge(Li), hyperpure Ge, Si(Li) detectors, mass-separated sources.

doi: 10.1016/0375-9474(95)00478-5
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1995BR21      Nucl.Phys. A592, 194 (1995)

J.B.Breitenbach, J.L.Wood, M.Jarrio, R.A.Braga, J.Kormicki, P.B.Semmes

The Decay of 133Pm and the Structure of 133Nd

RADIOACTIVITY 133Pm(β+), (EC) [from 92Mo(46Ti, 2n3p), E=246 MeV]; measured T1/2, Eγ, Iγ, I(ce), γγ(t), e(γ)(t), γ(X-ray)(t), ce(X-ray)(t). 133Nd deduced levels, J, π, ICC, γ-multipolarity, T1/2. Hyperpure Ge, Si(Li) detectors, mass-separated sources.

doi: 10.1016/0375-9474(95)00188-7
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1995BR24      Nucl.Phys. A595, 481 (1995)

J.B.Breitenbach, J.L.Wood, M.Jarrio, R.A.Braga, H.K.Carter, J.Kormicki, P.B.Semmes

The Decays of Mass-Separated 133m,133gNd to 133Pr

RADIOACTIVITY 133Nd(β+), (EC) [from 92Mo(46Ti, n4p), E=246 MeV]; measured Eγ, Iγ, I(ce), γγ(t), eγ(t), γ(X-ray)(t), e(X-ray)(t). 133mNd(β+), (EC) [from 92Mo(46Ti, 2n3p)133Pm(β+), E=246 MeV]; measured T1/2, Eγ, Iγ, I(ce), γγ(t), eγ(t), γ(X-ray)(t), e(X-ray)(t); deduced β+/EC, log ft, Q(EC). 133Pr deduced levels, J, π, ICC, γ-multipolarity. Hyperpure Ge, Si(Li) detectors, mass-separated sources.

doi: 10.1016/0375-9474(95)00366-5
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1995RU07      Phys.Rev. C51, R2867 (1995)

D.Rupnik, E.F.Zganjar, J.L.Wood, P.B.Semmes, W.Nazarewicz

Coexistence Effects in 187Au: Evidence for nearly identical diabatic intruder structures

RADIOACTIVITY 187mHg(EC), (β+) [from 176Hf(16O, 5n), E=125 MeV]; 187Hg (EC), (β+), (α) [from 187Tl(β+-decay) following production by 176Hf(19F, 8n), E=170 MeV]; measured Eγ, Iγ, I(ce), γγ-, γ(ce)-coin. 187Au deduced levels, J, π, ICC, band structure. Particle+triaxial rotor model.

doi: 10.1103/PhysRevC.51.R2867
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1995SE05      Phys.Lett. 345B, 185 (1995)

P.B.Semmes, I.Ragnarsson, S.Aberg

Magnetic Dipole Transitions in Superdeformed Nuclei

NUCLEAR STRUCTURE 194Hg, 194Tl; calculated superdeformed, rotational bands B(λ). Particle plus rotor model.

doi: 10.1016/0370-2693(94)01656-W
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1995SH04      Phys.Rev. C51, 1720 (1995)

D.T.Shi, W.C.Ma, A.V.Ramayya, J.H.Hamilton, B.R.S.Babu, J.Kormicki, L.Chaturvedi, Q.H.Lu, L.T.Brown, S.L.Tabor, M.A.Riley, J.Doring, D.E.Archer, T.Brown, S.K.Jewell, R.A.Kaye, O.J.Tekyi-Mensah, P.B.Semmes

Ground-State Bands and Excitation Modes in 183Hg

NUCLEAR REACTIONS 155Gd(32S, 4n), E=160 MeV; measured γγ-, γ(X-ray)-coin. 183Hg deduced high-spin levels, J, π, B(λ) ratios, γ-multipolarity, band structure, aligned angular momenta. Low energy photon spectrometer, BGO multiplicity filter.

doi: 10.1103/PhysRevC.51.1720
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1993GA07      Phys.Rev. C47, 2407 (1993)

U.Garg, W.Reviol, P.Semmes

Electromagnetic Properties of 181Ir: Evidence of β Stretching ( Question )

NUCLEAR STRUCTURE 181Ir; calculated levels, B(λ) ratios. Particle-rotor model.

doi: 10.1103/PhysRevC.47.2407
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1993GE06      Nucl.Phys. A557, 439c (1993)

A.Gelberg, D.Lieberz, P.von Brentano, I.Ragnarsson, P.B.Semmes, I.Wiedenhover

Triaxial Deformation of Odd-A Xe and Ba Nuclides

NUCLEAR STRUCTURE 123,125,127,129,131,133Xe, 127,129,131Ba; calculated levels, B(λ); deduced model parameter (γ), yrast states signature splitting. Triaxial rotor plus particle model.

doi: 10.1016/0375-9474(93)90560-K
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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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1993WO04      Phys.Rev. C47, 2546 (1993)

P.C.Womble, J.Doring, T.Glasmacher, J.W.Holcomb, G.D.Johns, T.D.Johnson, T.J.Petters, M.A.Riley, V.A.Wood, S.L.Tabor, P.Semmes

Nuclear Structure of Odd-Odd 82Y

NUCLEAR REACTIONS 58Ni(28Si, n3p), 56Fe(29Si, 2np), E=95-135 MeV; measured γ(particle)-, γγ-coin, DSA. 82Y deduced levels, J, π, B(λ), T1/2, quadrupole moments. Hartree-Fock-Bogolyubov calculations, particle-rotor calculations.

doi: 10.1103/PhysRevC.47.2546
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1992CE05      Nucl.Phys. A542, 454 (1992)

B.Cederwall, F.Liden, A.Johnson, L.Hildingsson, R.Wyss, B.Fant, S.Juutinen, P.Ahonen, S.Mitarai, J.Mukai, J.Nyberg, I.Ragnarsson, P.B.Semmes

Signature Inversion in 120Cs: Evidence for a residual pn interaction

NUCLEAR REACTIONS 92Mo(32S, n3p), E=145 MeV; measured Eγ, Iγ, σ(Eγ, θ), (particle)γγ-coin. 120Cs deduced levels, J, π, routhians, aligned angular momenta. Enriched targets, array of Compton suppressed hyperpure Ge detectors, array of neutron detectors, 4π array of Si charged particle detectors. Total routhian surface, two-particle plus triaxial rotor calculations.

doi: 10.1016/0375-9474(92)90106-T
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1992LI08      Phys.Lett. 282B, 7 (1992)

D.Lieberz, A.Gelberg, P.von Brentano, I.Ragnarsson, P.B.Semmes

Signatures of γ Deformation in Nuclei and an Application to 125Xe

NUCLEAR STRUCTURE 125Xe; calculated levels, g-factor, quadrupole moment, B(E2), T1/2. Rigid triaxial rotor plus particle model.

doi: 10.1016/0370-2693(92)90470-O
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1992RI11      Hyperfine Interactions 75, 59 (1992)

J.Rikovska, R.Wyss, P.B.Semmes

Electromagnetic Properties and Shapes of Ground States in Pt-Au-Hg Region

NUCLEAR STRUCTURE 193,191,189,187,183Pt, 195,193,191,189,187,185,183Au, 195,193,191,189,187,185,183Hg; calculated μ, quadrupole moments, deformation parameters vs mass. Particle-triaxial rotor model.

doi: 10.1007/BF02398964
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1992SE01      Phys.Rev.Lett. 68, 460 (1992)

P.B.Semmes, I.Ragnarsson, S.Aberg

' Invisible ' Decay of Superdeformed States

NUCLEAR STRUCTURE 193,194Hg; calculated transition Iγ in superdeformed bands. 193Hg deduced internal conversion dominated M1 cross talk evidence.

doi: 10.1103/PhysRevLett.68.460
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1992SE09      Hyperfine Interactions 75, 85 (1992)


Nuclear Spins and Moments: Fundamental structural information

NUCLEAR STRUCTURE 133Pm, 135,133Sm; calculated μ. Particle-rotor model.

doi: 10.1007/BF02398966
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1991LI15      Nucl.Phys. A529, 1 (1991)

D.Lieberz, A.Gelberg, A.Granderath, P.von Brentano, I.Ragnarsson, P.B.Semmes

Triaxial Rotor Plus Particle Description of Negative-Parity States in 125Xe

NUCLEAR STRUCTURE 125Xe; calculated levels, B(λ). Triaxial rotor plus particle model.

doi: 10.1016/0375-9474(91)90781-Z
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1988JA10      Phys.Rev.Lett. 61, 2073 (1988)

V.P.Janzen, M.P.Carpenter, L.L.Riedinger, W.Schmitz, S.Pilotte, S.Monaro, D.D.Rajnauth, J.K.Johansson, D.G.Popescu, J.C.Waddington, Y.S.Chen, F.Donau, P.B.Semmes

Evidence for a Low-Frequency πh9/2 Band Crossing in 185Pt and 183Ir

NUCLEAR REACTIONS 173Yb(16O, 4n), E=90 MeV; 168Er(19F, 4n), E=85 MeV; measured γγ-coin. 185Pt, 183Ir deduced levels, J, π, γ-branching, B(λ) ratio, band crossing. Cranked shell model.

NUCLEAR STRUCTURE 185Pt, 183Ir; calculated levels, B(λ). Cranked shell model.

doi: 10.1103/PhysRevLett.61.2073
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1988RA41      Hyperfine Interactions 43, 425 (1988)

I.Ragnarsson, P.B.Semmes

Description of Nuclear Moments and Nuclear Spectra in the Particle-Rotor Model

NUCLEAR STRUCTURE 156,158,160,162Ho; calculated levels, μ, electric quadrupole moment. 186Hg; calculated total energy. 185Hg; calculated potential energy surfaces. 185Au; calculated levels, B(λ), δ. Particle-rotor model.

1987KE05      Phys.Rev. C36, 1514 (1987)

B.D.Kern, R.L.Mlekodaj, G.A.Leander, M.O.Kortelahti, E.F.Zganjar, R.A.Braga, R.W.Fink, C.P.Perez, W.Nazarewicz, P.B.Semmes

Transition through Triaxial Shapes of the Light Samarium Isotopes and the Beta Decay of 136,138,140Eu

NUCLEAR REACTIONS 92Mo(48Ti, xnp), E=220 MeV; 112Sn(28Si, xnp), E=170, 190 MeV; measured Eγ, Iγ, γγ-coin. Enriched targets, Ge detectors, magnetic isotope separator.

RADIOACTIVITY 136,138,140Eu(β+), (EC) [from 92Mo(48Ti, pxn), E=220 MeV; 112Sn(28Si, xnp), E=170, 190 MeV]; measured Eγ, Iγ, γγ-coin. 136,138,140Sm deduced levels. Enriched targets, Ge detectors, magnetic isotope separator.

NUCLEAR STRUCTURE 136,138,140Sm; calculated levels. Wood-Saxon Strutinsky, triaxial models, interacting boson approximation.

doi: 10.1103/PhysRevC.36.1514
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1987SE02      Phys.Rev. C35, 749 (1987)

P.B.Semmes, R.A.Braga, J.C.Griffin, R.W.Fink

L2-L3 Coster-Kronig Transition Probability for Z = 54

RADIOACTIVITY 131Cs(EC); measured (K X-ray)(L X-ray)-coin; deduced L2-L3 Coster-Kronig transition probability. Ge, Si-Li detectors.

doi: 10.1103/PhysRevC.35.749
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1987SE03      Phys.Rev. C35, 844 (1987)

P.B.Semmes, A.F.Barfield, B.R.Barrett, J.L.Wood

Testing Interacting Boson Model Cores through Particle-Core Coupling: Negative parity states in the odd-mass Tl and Au isotopes

NUCLEAR STRUCTURE 189,191,193,195Au, 191,193,195,197Tl; calculated levels. Interacting boson model.

doi: 10.1103/PhysRevC.35.844
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1987SE04      Nucl.Phys. A464, 381 (1987)

P.B.Semmes, R.A.Braga, R.W.Fink, J.L.Wood, J.D.Cole

Decay of Mass-Separated 7.4 Min 203At

RADIOACTIVITY 203At(β-) [from Ir(16O, xn), E=125 MeV]; measured T1/2, Eγ, Iγ, I(ce), I X-ray, γγ(t), γ(ce)(t), (ce)(X-ray)(t); deduced I(β+)/I(EC), Q(EC). 203Po deduced levels, J, π, ICC, γ-multipolarity. Ge(Li), hyperpure Ge, Si-Li detectors, mass separated sources.

doi: 10.1016/0375-9474(87)90306-X
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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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1986BR28      Nucl.Phys. A459, 359 (1986)

R.A.Braga, P.B.Semmes, W.R.Western, R.W.Fink

Decay of Mass-Separated 201mPo and 201gPo

RADIOACTIVITY 201Po(EC), (β+), (α) [from 193Ir(14N, 6n), E=116 MeV]; 201Bi(EC), (β+), (α) [from 201Po decays]; measured T1/2, Eγ, Iγ, I(ce), γγ(t), γ(X-ray)(t). 201Bi deduced levels, J, π, ICC, γ-multipolarity. 201Po deduced (EC+β+)/IT branching ratio. Ge(Li), Si-Li detectors, mass separated sources.

doi: 10.1016/0375-9474(86)90139-9
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1986CH40      Phys.Rev. C34, 1935 (1986)

Y.S.Chen, P.B.Semmes, G.A.Leander

Calculation of M1 Transition Rates at High Spin in Axial Nuclei

NUCLEAR STRUCTURE 165Lu, 81Kr, 166Hf; calculated yrast levels, g factors, B(M1). Cranking, particle-rotor models.

doi: 10.1103/PhysRevC.34.1935
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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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Note: The following list of authors and aliases matches the search parameter P.Semmes: , P.A.SEMMES, P.B.SEMMES, P.S.SEMMES