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NSR database version of May 20, 2024.

Search: Author = D.Hartley

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2024LA01      Phys.Rev. C 109, 024309 (2024)

S.Lalkovski, F.G.Kondev, K.Auranen, A.D.Ayangeakaa, M.P.Carpenter, J.A.Clark, P.Copp, N.P.Giha, D.J.Hartley, T.Lauritsen, S.Marley, G.E.Morgan, C.Muller-Gatermann, S.Nandi, W.Reviol, D.Santiago-Gonzalez, G.Savard, D.Seweryniak, Ir.B.Vasilev, J.Wu

Structure of the high-spin, β-decaying state in the neutron-rich nucleus 146La

doi: 10.1103/PhysRevC.109.024309
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2024WU04      Phys.Rev. C 109, 024314 (2024)

J.Wu, M.P.Carpenter, F.G.Kondev, R.V.F.Janssens, S.Zhu, E.A.McCutchan, A.D.Ayangeakaa, J.Chen, J.Clark, D.J.Hartley, T.Lauritsen, N.Pietralla, G.Savard, D.Seweryniak, V.Werner

Determination of the spins and parities for the 04+ and 05+ states in 100Zr

doi: 10.1103/PhysRevC.109.024314
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2023AY02      Phys.Rev. C 107, 044314 (2023)

A.D.Ayangeakaa, R.V.F.Janssens, S.Zhu, J.M.Allmond, B.A.Brown, C.Y.Wu, M.Albers, K.Auranen, B.Bucher, M.P.Carpenter, P.Chowdhury, D.Cline, H.L.Crawford, P.Fallon, A.M.Forney, A.Gade, D.J.Hartley, A.B.Hayes, J.Henderson, F.G.Kondev, Krishichayan, T.Lauritsen, J.Li, D.Little, A.O.Macchiavelli, D.Rhodes, D.Seweryniak, S.M.Stolze, W.B.Walters, J.Wu

Triaxiality and the nature of low-energy excitations in 76Ge

NUCLEAR REACTIONS 208Pb(76Ge, 76Ge'), E=291, 304, 317 MeV; measured Eγ, Iγ, (76Ge)γ-coin using the GRETINA array with 28 Ge crystals in one experiment at 304-MeV beam energy, and 42 Ge crystals in a second experiment at 291- and 317-MeV beam energies, both in coincidence with scattered particles detected by using the CHICO2 array of position-sensitive parallel plate avalanche counters at the ATLAS-ANL facility. 76Ge; deduced levels, Jπ, γ-ray and Coulomb excitation yields analyzed by using the semiclassical, coupled-channel, Coulomb excitation least-squares code GOSIA, constrained by certain previouly known experimental nuclear structure parameters, E2, M1, E1 and E3 matrix elements, B(E2), B(M1), B(E1) and B(E3), spectroscopic quadrupole moments for five excited states, and evidence for rigid triaxial deformation at low excitation energies in 76Ge, and magnitudes of the quadrupole invariants Q+2, and expectation values of the quadrupole asymmetry parameters cos(3γ) for the members of the ground-state and the γ bands. Comparison with configuration interaction shell-model calculations and generalized triaxial rotor model, and with previous experimental data.

doi: 10.1103/PhysRevC.107.044314
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2023HA30      Phys.Rev. C 108, 024307 (2023)

D.J.Hartley, F.G.Kondev, M.P.Carpenter, J.A.Clark, P.Copp, B.Kay, T.Lauritsen, G.Savard, D.Seweryniak, G.L.Wilson, J.Wu

First b--decay spectroscopy study of 157Nd

RADIOACTIVITY 157Nd(β-)[from 252Cf(SF)]; measured Eγ, Iγ, Eβ, Iβ, βγ-coin, βγγ-coin; deduced T1/2, logft, branchings, β-feedings. 157Pm; deduced levels, J, π, configurations. Systematics of relative energies of quasiproton orbitals observed in promethium, europium, and terbium N =90, 92, 94, and 96 nuclei - 151Pm, 153Pm, 155Pm, 157Pm, 153Eu, 155Pm, 157Pm, 159Pm, 155Tb, 157Tb, 159Tb, 161Tb. Separated A=157 beam from CARIBU source delivered to the SATURN moving tape collection system, which was surrounded by X-Array spectrometer comprised of 5 germanium clover detectors plastic scintillators.

doi: 10.1103/PhysRevC.108.024307
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2023SI08      Phys.Rev. C 107, 054305 (2023)

J.Simpson, M.A.Riley, A.Pipidis, E.S.Paul, X.Wang, P.J.Nolan, J.F.Sharpey-Schafer, A.Aguilar, D.E.Appelbe, A.D.Ayangeakaa, A.J.Boston, H.C.Boston, D.B.Campbell, M.P.Carpenter, C.J.Chiara, P.T.W.Choy, R.M.Clark, M.Cromaz, A.O.Evans, P.Fallon, U.Garg, A.Gorgen, D.J.Hartley, R.V.F.Janssens, D.T.Joss, D.S.Judson, F.G.Kondev, T.Lauritsen, I.Y.Lee, A.O.Macchiavelli, J.T.Matta, J.Ollier, M.Petri, J.P.Revill, L.L.Riedinger, S.V.Rigby, C.Teal, P.J.Twin, C.Unsworth, D.Ward, S.Zhu, I.Ragnarsson

Evolution of structure and shapes in 158Er to ultrahigh spin

NUCLEAR REACTIONS 114Cd(48Ca, 4n)158Er, E=215 MeV; measured Eγ, Iγ, γγ-coin, γγ(θ). 158Er; deduced levels, J, π, high-spin states, angular intensity ratios, δ, B(M1/E2) ratios, nuclear shapes, alignments, rotational bands, configurations, band terminating states and feeding, transition quadrupole moments for triaxial strongly deformed bands, moment of inertia. Comparison with cranked Nilsson-Strutinski calculations. Systematics of triaxial strongly deformed bands in 158Er, 160Er, 152Dy, 163Lu. Gammasphere array of escape-suppressed HPGe detectors at 88-inch cyclotron-LBNL and ATLAS-ANL facilities.

doi: 10.1103/PhysRevC.107.054305
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2022HA01      Phys.Rev. C 105, 014301 (2022)

D.J.Hartley, F.G.Kondev, M.P.Carpenter, R.V.F.Janssens, M.A.Riley, K.Villafana, K.Auranen, A.D.Ayangeakaa, J.S.Baron, A.J.Boston, J.A.Clark, J.P.Greene, J.Heery, C.R.Hoffman, T.Lauritsen, J.Li, D.Little, E.S.Paul, G.Savard, D.Seweryniak, J.Simpson, S.Stolze, G.L.Wilson, J.Wu, S.Zhu

νi13/2 structures in 155Sm and 159Gd: Supporting evidence of a Z=60 deformed subshell gap

NUCLEAR REACTIONS 154Sm(160Gd, n), E=1000 MeV from the ATLAS facility of the Argonne National Laboratory. Measured Eγ, Iγ, γγ-coin using Gammasphere array with 73 Compton-suppressed HPGe detectors. 155Sm, 159Gd; deduced high-spin levels, J, π, νi13/2 bands, with the two signature partners, alignments and signature splitting. Discussed systematics of νi13/2 structures in N=91, 93, 95, and 97 isotopes: 153,155,157Sm, 155,157,159Gd, 157,159,161Dy, 151Ce, 153,155Nd, 161,163Er, 163,165Yb.

doi: 10.1103/PhysRevC.105.014301
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2021HA14      Phys.Rev. C 103, 034322 (2021)

D.J.Hartley, K.Villafana, F.G.Kondev, M.A.Riley, R.V.F.Janssens, K.Auranen, A.D.Ayangeakaa, J.S.Baron, A.J.Boston, M.P.Carpenter, J.A.Clark, J.P.Greene, J.Heery, C.R.Hoffman, P.Jackson, T.Lauritsen, J.Li, D.Little, E.S.Paul, G.Savard, D.Seweryniak, J.Simpson, S.Stolze, G.L.Wilson, J.Wu, S.Zhu, S.Frauendorf

Possible quenching of static neutron pairing near the N=98 deformed shell gap: Rotational structures in 160, 161Gd

NUCLEAR REACTIONS 154Sm, 164Dy(160Gd, X)160Gd/161Gd, E=1000 MeV; measured Eγ, Iγ, γγ-coin using the Gammasphere array with 73 detectors at ATLAS-ANL facility. 160,161Gd; deduced high-spin levels, J, π, rotational bands, branching ratios, B(M1)/B(E2), Nilsson configurations, alignments, neutron pairing strength. Comparison with structure of ν5/2[523] band in N=97 isotone 159Sm.

doi: 10.1103/PhysRevC.103.034322
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2020HA13      Phys.Rev. C 101, 044301 (2020)

D.J.Hartley, F.G.Kondev, G.Savard, J.A.Clark, A.D.Ayangeakaa, S.Bottoni, M.P.Carpenter, P.Copp, K.Hicks, C.R.Hoffman, R.V.F.Janssens, T.Lauritsen, R.Orford, J.Sethi, S.Zhu

High-K, two-quasiparticle states in 160Gd

RADIOACTIVITY 160,160mEu(β-)[from 252Cf(SF), isobarically separated A=160 nuclei using the CARIBU source at Argonne National Laboratory]; measured β-, Eγ, Iγ, βγ- and βγγ-coin using four Ge clover detectors and four plastic scintillators. 160Gd; deduced levels, J, π, Kπ, bands, Nilsson configurations, total conversion coefficients and multipolarities of the 98.8- and 102.7-keV transitions, Iβ and logft. Comparison with previous experimental results, and with multiquasiparticle calculations using Woods-Saxon potential, and Lipkin-Nogami prescription for pairing.

doi: 10.1103/PhysRevC.101.044301
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2020MA16      Phys.Rev. C 101, 044312 (2020)

S.N.T.Majola, M.A.Sithole, L.Mdletshe, D.Hartley, J.Timar, B.M.Nyako, J.M.Allmond, R.A.Bark, C.Beausang, L.Bianco, T.D.Bucher, S.P.Bvumbi, M.P.Carpenter, C.J.Chiara, N.Cooper, D.M.Cullen, D.Curien, T.S.Dinoko, B.J.P.Gall, P.E.Garrett, P.T.Greenlees, J.Hirvonen, U.Jakobsson, P.M.Jones, R.Julin, S.Juutinen, S.Ketelhut, B.V.Kheswa, F.G.Kondev, A.Korichi, W.D.Kulp, T.Lauritsen, E.A.Lawrie, L.Makhathini, P.L.Masiteng, B.Maqabuka, E.A.McCutchan, D.Miller, S.Miller, A.Minkova, L.Msebi, S.H.Mthembu, J.Ndayishimye, P.Nieminen, P.Z.Ngcobo, S.S.Ntshangase, J.N.Orce, P.Peura, P.Rahkila, N.Redon, L.L.Riedinger, M.A.Riley, D.G.Roux, P.Ruotsalainen, J.Piot, J.Saren, J.F.Sharpey-Schafer, C.Scholey, O.Shirinda, J.Simpson, J.Sorri, I.Stefanescu, S.Stolze, J.Uusitalo, X.Wang, V.Werner, J.L.Wood, C.-H.Yu, S.Zhu, G.Zimba

First candidates for γ vibrational bands built on the [505] 11/2- neutron orbital in odd-A Dy isotopes

NUCLEAR REACTIONS 155Gd(α, 2n)157Dy, E=25 MeV; measured Eγ, Iγ, γγ-coin, γγ(θ)(DCO), γγ(linear polarization) using the JUROGAM II array at the University of Jyvaskyla. 148Nd(12C, 5n)155Dy, E=65 MeV; 124Sn(36S, 5n)155Dy, E=165 MeV; measured Eγ, Iγ, γγ-coin using GAMMASPHERE array at Argonne National Laboratory. 155,157Dy; deduced high-spin levels, J, π, multipolarities, Kπ=0+ bands, Kπ=2+ γ-vibrational bands, configurations, alignments, B(M1)/B(E2) ratios. 157Dy; calculated neutron quasiparticle Routhians using cranked shell model (CSM). 154,156Dy; discussed first excited 0+ states in the core nuclei. Systematics of level energies versus spin for γ bands in 154,155,156,157,158Dy and 152,153,154,155,156Gd.

doi: 10.1103/PhysRevC.101.044312
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2020OR03      Phys.Rev. C 102, 011303 (2020)

R.Orford, F.G.Kondev, G.Savard, J.A.Clark, W.S.Porter, D.Ray, F.Buchinger, M.T.Burkey, D.A.Gorelov, D.J.Hartley, J.W.Klimes, K.S.Sharma, A.A.Valverde, X.L.Yan

Spin-trap isomers in deformed, odd-odd nuclei in the light rare-earth region near N=98

ATOMIC MASSES 156,156m,158,160,160mPm, 158,160,160m,162,162m,164Eu, 162,162m,164,164m,166Tb; measured cyclotron frequency using the Canadian Penning Trap mass spectrometer at the CARIBU-ANL facility; deduced mass excesses, isomer excitation energies, Kπ, Nilsson configurations. Radioactive nuclei were produced in spontaneous fission of 252Cf source, filtered by A/Q, and purified by a multireflection time-of-flight mass separator (MR-TOF). Comparison with multiquasiparticle blocking calculations.

doi: 10.1103/PhysRevC.102.011303
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2020SE02      Phys.Rev.Lett. 124, 052501 (2020)

N.Sensharma, U.Garg, Q.B.Chen, S.Frauendorf, D.P.Burdette, J.L.Cozzi, K.B.Howard, S.Zhu, M.P.Carpenter, P.Copp, F.G.Kondev, T.Lauritsen, J.Li, D.Seweryniak, J.Wu, A.D.Ayangeakaa, D.J.Hartley, R.V.F.Janssens, A.M.Forney, W.B.Walters, S.S.Ghugre, R.Palit

Longitudinal Wobbling Motion in 187Au

NUCLEAR REACTIONS 174Yb(19F, X)187Au, E=105, 115 MeV; measured reaction products, Eγ, Iγ; deduced γ-ray energies and intensities, J, π, yrast band, B(M1)/B(E2). Comparison with PRM calculations.

doi: 10.1103/PhysRevLett.124.052501
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2019AY04      Phys.Rev.Lett. 123, 102501 (2019)

A.D.Ayangeakaa, R.V.F.Janssens, S.Zhu, D.Little, J.Henderson, C.Y.Wu, D.J.Hartley, M.Albers, K.Auranen, B.Bucher, M.P.Carpenter, P.Chowdhury, D.Cline, H.L.Crawford, P.Fallon, A.M.Forney, A.Gade, A.B.Hayes, F.G.Kondev, Krishichayan, T.Lauritsen, J.Li, A.O.Macchiavelli, D.Rhodes, D.Seweryniak, S.M.Stolze, W.B.Walters, J.Wu

Evidence for Rigid Triaxial Deformation in 76Ge from a Model-Independent Analysis

NUCLEAR REACTIONS 208Pb(76Ge, 76Ge'), E=304, 291, 317 MeV; measured reaction products, Eγ, Iγ. 76Ge; deduced γ-ray energies, E2 matrix elements, quadrupole asymmetry for bands, triaxial deformation.

doi: 10.1103/physrevlett.123.102501
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2019GA29      Phys.Rev. C 100, 044309 (2019)

E.R.Gamba, A.M.Bruce, S.Lalkovski, M.Rudigier, S.Bottoni, M.P.Carpenter, S.Zhu, J.T.Anderson, A.D.Ayangeakaa, T.A.Berry, I.Burrows, M.Carmona-Gallardo, R.J.Carroll, P.Copp, D.M.Cullen, T.Daniel, G.Fernandez-Martinez, J.P.Greene, L.A.Gurgi, D.J.Hartley, R.Ilieva, S.Ilieva, F.G.Kondev, T.Kroll, G.J.Lane, T.Lauritsen, I.Lazarus, G.Lotay, C.R.Nita, Zs.Podolyak, V.Pucknell, M.Reed, P.H.Regan, J.Rohrer, J.Sethi, D.Seweryniak, C.M.Shand, J.Simpson, M.Smolen, E.A.Stefanova, V.Vedia, O.Yordanov

Fast-timing measurements in the ground-state band of 114Pd

RADIOACTIVITY 252Cf(SF); measured Eγ, Iγ, γγ-coin, level half-lives by fast-timing γγ(t) technique using Gammasphere array with 51 HPGe detectors, and FATIMA array with 25 LaBr3(Ce) detectors at the Argonne National Laboratory. 114Pd; deduced levels, J, π, half-lives for the first 2+, 4+ and 6+ states, B(E2), transition quadrupole moments, β2. Comparison of experimental B(E2) values with those predicted by the vibrator, rigid axial rotor, Wilets-Jean and Davydov-Filippov models. Systematics of B(E2) values for the first 2+ state in Z=44-48, N=56-74 even-even nuclei.

doi: 10.1103/PhysRevC.100.044309
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2019MA64      Phys.Rev. C 100, 034322 (2019)

S.N.T.Majola, R.A.Bark, L.Bianco, T.D.Bucher, S.P.Bvumbi, D.M.Cullen, P.E.Garrett, P.T.Greenlees, D.Hartley, J.Hirvonen, U.Jakobsson, P.M.Jones, R.Julin, S.Juutinen, S.Ketelhut, B.V.Kheswa, A.Korichi, E.A.Lawrie, P.L.Masiteng, B.Maqabuka, L.Mdletshe, A.Minkova, J.Ndayishimye, P.Nieminen, R.Newman, B.M.Nyako, S.S.Ntshangase, P.Peura, P.Rahkila, L.L.Riedinger, M.Riley, D.Roux, P.Ruotsalainen, J.Saren, J.F.Sharpey-Schafer, C.Scholey, O.Shirinda, A.Sithole, J.Sorri, S.Stolze, J.Timar, J.Uusitalo, G.Zimba

Spectroscopy of low-spin states in 157Dy: Search for evidence of enhanced octupole correlations

NUCLEAR REACTIONS 155Gd(α, 2n), E=25 MeV; measured Eγ, Iγ, γγ-coin, γγ(θ)(DCO), γγ(linear polarization) using enriched target and JUROGAM II array at Jyvaskyla. 157Dy; deduced levels, J, π, multipolarities, rotational bands, interlacing band structures, B(E1)/B(E2) ratios, reflection asymmetric structures with simplex quantum number, octupole correlations, alignments, configurations; calculated neutron quasiparticle Routhians.

doi: 10.1103/PhysRevC.100.034322
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2019MA70      Phys.Rev. C 100, 044324 (2019)

S.N.T.Majola, Z.Shi, B.Y.Song, Z.P.Li, S.Q.Zhang, R.A.Bark, J.F.Sharpey-Schafer, D.G.Aschman, S.P.Bvumbi, T.D.Bucher, D.M.Cullen, T.S.Dinoko, J.E.Easton, N.Erasmus, P.T.Greenlees, D.J.Hartley, J.Hirvonen, A.Korichi, U.Jakobsson, P.Jones, S.Jongile, R.Julin, S.Juutinen, S.Ketelhut, B.V.Kheswa, N.A.Khumalo, E.A.Lawrie, J.J.Lawrie, R.Lindsay, T.E.Madiba, L.Makhathini, S.M.Maliage, B.Maqabuka, K.L.Malatji, P.L.Masiteng, P.I.Mashita, L.Mdletshe, A.Minkova, L.Msebi, S.M.Mullins, J.Ndayishimye, D.Negi, A.Netshiya, R.Newman, S.S.Ntshangase, R.Ntshodu, B.M.Nyako, P.Papka, P.Peura, P.Rahkila, L.L.Riedinger, M.A.Riley, D.G.Roux, P.Ruotsalainen, J.J.Saren, C.Scholey, O.Shirinda, M.A.Sithole, J.Sorri, M.Stankiewicz, S.Stolze, J.Timar, J.Uusitalo, P.A.Vymers, M.Wiedeking, G.L.Zimba

β and γ bands in N=88, 90, and 92 isotones investigated with a five-dimensional collective Hamiltonian based on covariant density functional theory: Vibrations, shape coexistence, and superdeformation

NUCLEAR REACTIONS 136Xe(18O, 4n)150Sm, E=75 MeV; 148Nd(α, 2n)150Sm, E=25 MeV; 152Sm(α, 4n)152Gd, E=45 MeV; 152Sm(α, 2n)154Gd, E=25 MeV; 155Gd(3He, 4n)154Dy, E=37.5 MeV; 147Sm(12C, 3n)156Er, E=65 MeV; 155Gd(α, 3n)156Dy, E=25 MeV; 144Sm(18O, 4n)158Yb, E=78 MeV; 150Sm(12C, 4n)158Er, E=65 MeV; 156Gd(α, 2n)158Dy, E=27 MeV; 147Sm(16O, 3n)160Yb, E=73 MeV; 152Sm(12C, 4n)160Er, E=64 MeV; measured Eγ, Iγ, γγ-coin, γγ(θ)(DCO), γγ(linear polarization) using the AFRODITE array at the cyclotron facility of the iThemba Labs for 11 reactions, and JUROGAM II array at Jyvaskyla for 148Nd(α, 2n)150Sm and 155Gd(α, 3n)156Dy reactions. 150Sm, 152,154Gd, 154,156,158Dy, 156,160Er, 158,160Yb; deduced levels, J, π, multipolarities, β, γ and 0+ bands, B(E2) ratios. 150,152,154Sm, 152,154,156Gd, 154,156,158Dy, 156,158,160Er, 158,160,162Yb; calculated potential energy surfaces (PES) and probability density distribution contours in (β, γ) plane; deduced staggering parameters, in-band B(E2) values, absolute transition strengths of E0 transitions, X(E0/E2) values from present and previous experimental data. Comparison with 5DCH-CDFT calculations with PC-PK1 density functional.

doi: 10.1103/PhysRevC.100.044324
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2019MI12      Phys.Rev. C 100, 014302 (2019)

S.L.Miller, K.A.Villafana, M.A.Riley, J.Simpson, D.J.Hartley, E.S.Paul, A.D.Ayangeakaa, J.S.Baron, P.F.Bertone, A.J.Boston, M.P.Carpenter, J.J.Carroll, J.Cavey, C.J.Chiara, P.Chowdhury, U.Garg, S.S.Hota, E.G.Jackson, R.V.F.Janssens, F.G.Kondev, T.Lauritsen, M.Litz, W.C.Ma, J.Matta, E.A.McCutchan, S.Mukhopadhyay, P.J.Nolan, E.E.Pedicini, L.L.Riedinger, J.F.Sharpey-Schafer, J.R.Vanhoy, A.Volya, X.Wang, S.Zhu

Backbending, seniority, and Pauli blocking of pairing correlations at high rotational frequencies in rapidly rotating nuclei

NUCLEAR STRUCTURE 156,157,158,159,160,161,162,163,164,165,166,168,170Er, 158,159,160,161,162,163,164,165,166,167,168,169,170,171,172Yb, 160,161,162,163,164,165,166,167,168,169,170,171,172,173,174Hf, 164,165,166,167,168,169,170,171,172,173,174,175,176,177W; calculated band-crossing frequencies of the first (AB) and the second (BC) i13/2 neutron alignments. 162Er, 164Yb, 166Hf, 168W: calculated AB and BC crossing frequencies as function of quadrupole deformation, and as function of the percentage of the odd-even mass difference for N=94 nuclei. Comparison with experimental data. A=134-200, Z=52-82; systematics of E(first 4+)/E(first 2+) ratios for even-even nuclei.

doi: 10.1103/PhysRevC.100.014302
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2019SE06      Phys.Lett. B 792, 170 (2019), Erratum Phys.Lett. B 820, 136556 (2021)

N.Sensharma, U.Garg, S.Zhu, A.D.Ayangeakaa, S.Frauendorf, W.Li, G.H.Bhat, J.A.Sheikh, M.P.Carpenter, Q.B.Chen, J.L.Cozzi, S.S.Ghugre, Y.K.Gupta, D.J.Hartley, K.B.Howard, R.V.F.Janssens, F.G.Kondev, T.C.McMaken, R.Palit, J.Sethi, D.Seweryniak, R.P.Singh

Two-phonon wobbling in 135Pr

NUCLEAR STRUCTURE 135Pr; analyzed available data; deduced wobbling. Comparison with theoretical calculations in the framework of the quasiparticle triaxial rotor and triaxial projected shell models.

doi: 10.1016/j.physletb.2019.03.038
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2018CH13      Nature(London) 554, 7691 (2018)

C.J.Chiara, J.J.Carroll, M.P.Carpenter, J.P.Greene, D.J.Hartley, R.V.F.Janssens, G.J.Lane, J.C.Marsh, D.A.Matters, M.Polasik, J.Rzadkiewicz, D.Seweryniak, S.Zhu, S.Bottoni, A.B.Hayes, S.A.Karamian

Isomer depletion as experimental evidence of nuclear excitation by electron capture

NUCLEAR REACTIONS 7Li(90Zr, 3np), E=840 MeV; measured Eγ, Iγ, γγγ-coin using Gammasphere array at ATLAS-ANL. 93Mo; deduced levels, first experimental evidence of process of nuclear excitation by electron capture (NEEC) through the isomer depletion of 2425-keV isomer and excitation of the 2430-keV intermediate level from the 2425-keV isomer, and observation of 2475-268-685-1478 γ cascade in coincidence.

NUCLEAR REACTIONS 90Zr(7Li, 3np), E(cm)=same as above for reverse kinematic reaction; measured Eγ, Iγ, γγ-coin at Australian National Laboratory. 93Mo; deduced levels, non-observation of 2475- and 268-keV γ rays in γγ coincidences in the normal kinematics reaction consistent with NEEC interpretation in the inverse kinematic reaction study at Argonne.

doi: 10.1038/nature25483
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2018GA23      Acta Phys.Pol. B49, 555 (2018)

E.R.Gamba, A.M.Bruce, M.Rudigier, S.Lalkovski, S.Bottoni, M.P.Carpenter, S.Zhu, A.D.Ayangeakaa, J.T.Anderson, T.A.Berry, I.Burrows, R.J.Carrol, P.Copp, M.Carmona-Gallardo, D.M.Cullen, T.Daniel, G.Fernandez-Martinez, J.P.Greene, L.A.Gurgi, D.J.Hartley, R.Ilieva, S.Ilieva, R.V.F.Janssens, F.G.Kondev, T.Kroll, G.J.Lane, T.Lauritsen, I.Lazarus, G.Lotay, C.R.Nita, Zs.Podolyak, V.Pucknell, M.Reed, P.H.Regan, J.Rohrer, J.Sethi, D.Seweryniak, C.M.Shand, J.Simpson, M.Smolen, V.Vedia, E.A.Stefanova, O.Yordanov

Fast-timing Measurements in 100Zr Using LaBr3(Ce) Detectors Coupled with Gammasphere

RADIOACTIVITY 252Cf(SF); measured 100Zr fission fragment 4+ state Eγ, Iγ, T1/2, fission partners fragments using Digital Gammasphere (DGS) acquisition with hybrid detector made of 51 HPGe from Gammasphere and 25 LaBr3(Ce) scintillators (part of UK NuSTAR Collaboration); deduced first excited state T1/2, deformation, quadrupole moment, B(E2), LaBr3(Ce) γ-γ matrix, DGS γ-γ matrix, centroid difference between delayed and anti-delayed time distributions. Results preliminary, the main aim was the feasibility study.

doi: 10.5506/aphyspolb.49.555
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2018HA19      Phys.Rev.Lett. 120, 182502 (2018)

D.J.Hartley, F.G.Kondev, R.Orford, J.A.Clark, G.Savard, A.D.Ayangeakaa, S.Bottoni, F.Buchinger, M.T.Burkey, M.P.Carpenter, P.Copp, D.A.Gorelov, K.Hicks, C.R.Hoffman, C.Hu, R.V.F.Janssens, J.W.Klimes, T.Lauritsen, J.Sethi, D.Seweryniak, K.S.Sharma, H.Zhang, S.Zhu, Y.Zhu

Masses and β-Decay Spectroscopy of Neutron-Rich Odd-Odd 160, 162Eu Nuclei: Evidence for a Subshell Gap with Large Deformation at N=98

RADIOACTIVITY 160,162Eu(β-); measured decay products, Eγ, Iγ; deduced γ-ray energies, partial level scheme, T1/2.

ATOMIC MASSES 160,162Eu; measured frequency ratios; deduced mass excess (ME) for the ground and isomeric states.

doi: 10.1103/PhysRevLett.120.182502
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2018KO15      Nucl.Data Sheets 150, 1 (2018)

F.G.Kondev, S.Juutinen, D.J.Hartley

Nuclear Data Sheets for A=188

COMPILATION 188Lu, 188Hf, 188Ta, 188W, 188Re, 188Os, 188Ir, 188Pt, 188Au, 188Hg, 188Tl, 188Pb, 188Bi, 188Po; compiled, evaluated nuclear structure data.

doi: 10.1016/j.nds.2018.05.001
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2017HA03      Phys.Rev. C 95, 014321 (2017)

D.J.Hartley, L.L.Riedinger, R.V.F.Janssens, S.N.T.Majola, M.A.Riley, J.M.Allmond, C.W.Beausang, M.P.Carpenter, C.J.Chiara, N.Cooper, D.Curien, B.J.P.Gall, P.E.Garrett, F.G.Kondev, W.D.Kulp, T.Lauritsen, E.A.McCutchan, D.Miller, S.Miller, J.Piot, N.Redon, J.F.Sharpey-Schafer, J.Simpson, I.Stefanescu, X.Wang, V.Werner, J.L.Wood, C.-H.Yu, S.Zhu, J.Dudek

Investigation of negative-parity states in 156Dy: Search for evidence of tetrahedral symmetry

NUCLEAR REACTIONS 148Nd(12C, 4n), E=65 MeV; measured Eγ, Iγ, γγ-coin, γγ(θ)(DCO) using GAMMASPHERE array at ATLAS-ANL facility. 156Dy; deduced high-spin levels, J, π, multipolarities, negative-parity bands, alignments, configurations, B(E2)/B(E1) ratios and octupole excitations, no evidence for tetrahedral symmetry. Systematics of Kπ=0-, 3- and Kπ=1-, 4- states in N=90 isotones 152Sm, 154Gd, 156Dy and 160Yb.

doi: 10.1103/PhysRevC.95.014321
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2017RU02      Acta Phys.Pol. B48, 351 (2017)

M.Rudigier, S.Lalkovski, E.R.Gamba, A.M.Bruce, Zs.Podolyak, P.H.Regan, M.Carpenter, S.Zhu, A.D.Ayangeakaa, J.T.Anderson, T.Berry, S.Bottoni, I.Burrows, R.Carroll, P.Copp, D.Cullen, T.Daniel, L.Fraile, M.Carmona-Gallardo, A.Grant, J.P.Greene, L.A.Guegi, D.Hartley, R.Ilieva, S.Ilieva, R.V.F.Janssens, F.G.Kondev, T.Kroll, G.J.Lane, T.Lauritsen, I.Lazarus, G.Lotay, G.Fernandez-Martinez, V.Pucknell, M.Reed, J.Rohrer, J.Sethi, D.Seweryniak, C.M.Shand, J.Simpson, M.Smolen, E.Stefanova, V.Vedia, O.Yordanov

Fast Timing Measurement Using an LaBr3(Ce) Scintillator Detector Array Coupled with Gammasphere

doi: 10.5506/APhysPolB.48.351
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2016GA07      Phys.Rev. C 93, 031601 (2016)

A.Gade, J.A.Tostevin, V.Bader, T.Baugher, D.Bazin, J.S.Berryman, B.A.Brown, D.J.Hartley, E.Lunderberg, F.Recchia, S.R.Stroberg, Y.Utsuno, D.Weisshaar, K.Wimmer

One-neutron pickup into 49Ca: Bound neutron g9/2 spectroscopic strength at N=29

NUCLEAR REACTIONS 12C(48Ca, 49Ca), E=140 MeV/nucleon; measured Eγ, Iγ, (49Ca)γ-coin, γ(θ), neutron-pickup single-particle cross sections using A1900 fragment separator and GRETINA array at NSCL-MSU. Heavy-ion-induced neutron-pickup reaction. DWBA analysis. 49Ca; deduced levels, J, π, multipolarity, spectroscopic factors. Comparison with full sd+pf+sdg valence-space shell-model calculations.

doi: 10.1103/PhysRevC.93.031601
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2016GA14      Phys.Rev. C 93, 054315 (2016)

A.Gade, J.A.Tostevin, V.Bader, T.Baugher, D.Bazin, J.S.Berryman, B.A.Brown, C.Aa.Diget, T.Glasmacher, D.J.Hartley, E.Lunderberg, S.R.Stroberg, F.Recchia, A.Ratkiewicz, D.Weisshaar, K.Wimmer

Single-particle structure at N=29: The structure of 47Ar and first spectroscopy of 45S

NUCLEAR REACTIONS 9Be(48K, 47Ar), E=87.5 MeV/nucleon; 12C(46Ar, 47Ar), E=67 MeV/nucleon; 9Be(46Cl, 45S), [secondary 48K, 46Ar and 46Cl beams from 9Be(48Ca, X), E=140 MeV/nucleon primary reaction using A1900 fragment separator at NSCL-MSU]; measured particle identification spectra, Eγ, Iγ, γγ-coin using S800 spectrograph and SeGA array of 32-fold segmented HPGe detectors. 45S, 47Ar; deduced levels, J, π, σ. Detailed calculations for cross sections and spectroscopic factors using Eikonal dynamics for proton-removal, DWBA for neutron pickup, and SDPF-U and SDPF-MU shell-model interactions.

doi: 10.1103/PhysRevC.93.054315
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2016HA36      Phys.Rev. C 94, 054329 (2016)

D.J.Hartley, R.V.F.Janssens, L.L.Riedinger, M.A.Riley, X.Wang, S.L.Miller, A.D.Ayangeakaa, P.F.Bertone, M.P.Carpenter, C.J.Chiara, P.Chowdhury, U.Garg, G.Gurdal, S.S.Hota, F.G.Kondev, T.Lauritsen, W.C.Ma, J.Matta, E.A.McCutchan, S.Mukhopadhyay, E.E.Pedicini, J.R.Vanhoy, S.Zhu

First observation of rotational structures in 168Re

NUCLEAR REACTIONS 118Sn(55Mn, 5n), E=260 MeV; measured Eγ, Iγ, γγ-coin using Gammasphere array at ATLAS-ANL facility. 168Re; deduced high-spin levels, J, π, γ-branching ratios, bands, alignments, band crossings, B(M1)/B(E2) ratios, configuration. Comparison of B(M1)/B(E2) ratios with theoretical calculations. Systematics of level energies for πh11/2νi13/2 bands in 166,168,170,172,174Re. Systematics of signature splitting for πh11/2νi13/2 bands in 166,168,170,172,174Re, 164,166,168,170,172Ta, 162,164,166,168,170Lu.

doi: 10.1103/PhysRevC.94.054329
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2016LU14      Phys.Rev. C 94, 064327 (2016)

E.Lunderberg, A.Gade, V.Bader, T.Baugher, D.Bazin, J.S.Berryman, B.A.Brown, D.J.Hartley, F.Recchia, S.R.Stroberg, D.Weisshaar, K.Wimmer

In-beam γ-ray spectroscopy of 38-42S

NUCLEAR REACTIONS 12C(46Ar, X)40S/41S/42S/43S, E=67.0 MeV/nucleon; 12C(48Ca, X)38S/39S/40S, E=66.7 MeV/nucleon, [secondary 46Ar beam from 9Be(48Ca, X) primary reaction]; measured particle identification spectra, yields using A1900 fragment separator and S800 spectrograph, Eγ, Iγ, γγ-coin, (particle)γ-coin using GRETINA array at NSCL-MSU facility. 38,39,40,41,42,43S; deduced levels, J, π, estimated half-life of 6+ state in 38S; calculated shell model (SDPF-MU) neutron p3/2 occupancies for the 0+ and 2+ states in 38,40,42,44S. Comparison with large-scale shell-model calculations with the SDPF-MU effective interaction for the sd-pf shell using NUSHELLX code.

doi: 10.1103/PhysRevC.94.064327
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2015DA12      Phys.Rev.Lett. 115, 132502 (2015)

H.M.David, J.Chen, D.Seweryniak, F.G.Kondev, J.M.Gates, K.E.Gregorich, I.Ahmad, M.Albers, M.Alcorta, B.B.Back, B.Baartman, P.F.Bertone, L.A.Bernstein, C.M.Campbell, M.P.Carpenter, C.J.Chiara, R.M.Clark, M.Cromaz, D.T.Doherty, G.D.Dracoulis, N.E.Esker, P.Fallon, O.R.Gothe, J.P.Greene, P.T.Greenlees, D.J.Hartley, K.Hauschild, C.R.Hoffman, S.S.Hota, R.V.F.Janssens, T.L.Khoo, J.Konki, J.T.Kwarsick, T.Lauritsen, A.O.Macchiavelli, P.R.Mudder, C.Nair, Y.Qiu, J.Rissanen, A.M.Rogers, P.Ruotsalainen, G.Savard, S.Stolze, A.Wiens, S.Zhu

Decay and Fission Hindrance of Two- and Four-Quasiparticle K Isomers in 254Rf

NUCLEAR REACTIONS 206Pb(50Ti, 2n)254Rf, E=242.5 MeV; measured reaction products, Eγ, Iγ, Eβ, Iβ; deduced energy levels, J, π, isomer T1/2, unprecedented fission hindrance relative to the ground state. Comparison with multiquasiparticle calculations.

doi: 10.1103/PhysRevLett.115.132502
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2015HA16      Phys.Rev. C 91, 057301 (2015)

D.J.Hartley, M.A.Riley, X.Wang, S.Miller, R.V.F.Janssens, E.S.Paul, J.M.Rees, J.Simpson, L.L.Riedinger, A.D.Ayangeakaa, M.P.Carpenter, C.J.Chiara, U.Garg, P.Hampson, C.R.Hoffman, F.G.Kondev, T.Lauritsen, P.J.R.Mason, J.T.Matta, P.J.Nolan, J.Ollier, M.Petri, D.C.Radford, J.P.Revill, S.Zhu, I.Ragnarsson

Persistence of collective behavior at high spin in the N=88 nucleus 153Tb

NUCLEAR REACTIONS 124Sn(37Cl, 4nα), E=180 MeV; measured Eγ, Iγ, γγ-coin using Gammasphere array at ATLAS-ANL facility. 153Tb; deduced high-spin levels, J, π, bands, alignments, configurations. Systematics of yrast states in N=88 isotones 152Gd, 154Dy, 156Er, 158Yb, 153Tb, 155Ho, 157Tm, and Comparison with Nilsson-Strutinsky (CNS) calculations.

doi: 10.1103/PhysRevC.91.057301
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2015MA13      Phys.Rev.Lett. 114, 082501 (2015)

J.T.Matta, U.Garg, W.Li, S.Frauendorf, A.D.Ayangeakaa, D.Patel, K.W.Schlax, R.Palit, S.Saha, J.Sethi, T.Trivedi, S.S.Ghugre, R.Raut, A.K.Sinha, R.V.F.Janssens, S.Zhu, M.P.Carpenter, T.Lauritsen, D.Seweryniak, C.J.Chiara, F.G.Kondev, D.J.Hartley, C.M.Petrache, S.Mukhopadhyay, D.Vijaya Lakshmi, M.K.Raju, P.V.Madhusudhana Rao, S.K.Tandel, S.Ray, F.Donau

Transverse Wobbling in 135Pr

NUCLEAR REACTIONS 123Sb(16O, 4n), E=80 MeV; measured reaction products, Eγ, Iγ, γ-γ-γ-coin.; deduced energy levels, J, π, wobbling bands, B(M1)/B(E2), deviation from axiality. Comparison with available data and theoretical calculations.

doi: 10.1103/PhysRevLett.114.082501
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2015MA15      Phys.Rev. C 91, 034330 (2015)

S.N.T.Majola, D.J.Hartley, L.L.Riedinger, J.F.Sharpey-Schafer, J.M.Allmond, C.Beausang, M.P.Carpenter, C.J.Chiara, N.Cooper, D.Curien, B.J.P.Gall, P.E.Garrett, R.V.F.Janssens, F.G.Kondev, W.D.Kulp, T.Lauritsen, E.A.McCutchan, D.Miller, J.Piot, N.Redon, M.A.Riley, J.Simpson, I.Stefanescu, V.Werner, X.Wang, J.L.Wood, C.-H.Yu, S.Zhu

Observation of γ vibrations and alignments built on non-ground-state configurations in 156Dy

NUCLEAR REACTIONS 148Nd(12C, 4n), E=65 MeV; measured Eγ, Iγ, multi-fold γγ-coin, γγ(θ)(DCO) using Gammasphere array at ATLAS-ANL facility. 156Dy; deduced high-spin levels, J, π, multipolarities, ground-state, γ- and S-bands, 0+ pairing isomer state, alignments, B(E2) ratios, candidate for an aligned S band built on the second 0+, second vacuum configuration. Systematics of γ band members above 15+ in 104Mo, 154,156,160,162,164Dy, 156,160,164,170Er, 180Hf, 238U.

doi: 10.1103/PhysRevC.91.034330
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2015PA16      Acta Phys.Pol. B46, 487 (2015)

E.S.Paul, J.M.Rees, P.Hampson, M.A.Riley, J.Simpson, A.D.Ayangeakaa, J.S.Baron, M.P.Carpenter, C.J.Chiara, U.Garg, D.J.Hartley, C.R.Hoffman, R.V.F.Janssens, F.G.Kondev, T.Lauritsen, P.J.R.Mason, J.Matta, S.L.Miller, P.J.Nolan, J.Ollier, M.Petri, D.C.Radford, J.P.Revill, X.Wang, S.Zhu, I.Ragnarsson

Recent Results at Ultrahigh Spin: Terminating States and Beyond in Mass 160 Rare-earth Nuclei

NUCLEAR REACTIONS 124Sn(37Cl, xn)155Ho/156Ho/157Ho, E=180 MeV; measured reaction products, Eγ, Iγ; deduced energy levels, J, π, systematics.

doi: 10.5506/APhysPolB.46.487
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2015RE03      Phys.Rev. C 91, 054301 (2015)

J.M.Rees, E.S.Paul, J.Simpson, M.A.Riley, A.D.Ayangeakaa, M.P.Carpenter, C.J.Chiara, U.Garg, P.Hampson, D.J.Hartley, C.R.Hoffman, R.V.F.Janssens, F.G.Kondev, T.Lauritsen, P.J.R.Mason, J.Matta, S.L.Miller, P.J.Nolan, J.Ollier, M.Petri, D.C.Radford, J.P.Revill, X.Wang, S.Zhu, J.Gellanki, I.Ragnarsson

High-spin terminating states in the N=88 155Ho and 156Er isotones

NUCLEAR REACTIONS 124Sn(37Cl, 6n)155Ho, E=180 MeV; 114Cd(48Ca, 6n)156Er, E=215 MeV; measured Eγ, Iγ, γγ-coin, angular intensity ratios using Gammasphere array at ATLAS-ANL facility. 155Ho, 156Er; deduced high-spin levels, J, π, multipolarity, bands, non-collective oblate states in 155Ho, γ-branching ratios and B(M1)/B(E2) for 155Ho, alignments, configurations, staggering parameter; calculated Tilted Fermi-surface diagrams. Comparison with cranked Nilsson-Strutinsky calculations, and with structure of N=88 isotones 154Dy, 155Ho and 156Er.

doi: 10.1103/PhysRevC.91.054301
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2014HA22      Phys.Rev. C 90, 017301 (2014)

D.J.Hartley, R.V.F.Janssens, L.L.Riedinger, M.A.Riley, X.Wang, S.Miller, A.D.Ayangeakaa, M.P.Carpenter, J.J.Carroll, J.Cavey, C.J.Chiara, P.Chowdhury, U.Garg, S.S.Hota, E.G.Jackson, F.G.Kondev, T.Lauritsen, M.Litz, W.C.Ma, J.Matta, E.S.Paul, E.E.Pedicini, J.Simpson, J.R.Vanhoy, S.Zhu

High-spin structure of odd-odd 172Re

NUCLEAR REACTIONS 120Sn(55Mn, 3n), E=257 MeV; measured Eγ, Iγ, γγ, three- and higher-fold coincidences, γγ(θ) ratios using Gammasphere array at ATLAS-ANL facility. 172Re; deduced high-spin levels, J, π, bands, configurations, alignment plots.

doi: 10.1103/PhysRevC.90.017301
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2014HO16      Phys.Lett. B 739, 13 (2014)

S.S.Hota, P.Chowdhury, T.L.Khoo, M.P.Carpenter, R.V.F.Janssens, Y.Qiu, I.Ahmad, J.P.Greene, S.K.Tandel, D.Seweryniak, S.Zhu, P.F.Bertone, C.J.Chiara, A.Y.Deo, N.D'Olympia, S.Gros, C.J.Guess, T.Harrington, D.J.Hartley, G.Henning, C.R.Hoffman, E.G.Jacksona, F.G.Kondev, S.Lakshmi, T.Lauritsen, C.J.Lister, E.A.McCutchan, K.Moran, C.Nair, D.Peterson, U.Shirwadkar, I.Stefanescu

N=151 Pu, Cm and Cf nuclei under rotational stress: Role of higher-order deformations

NUCLEAR REACTIONS 244Pu, 249Cf(208Pb, X)242Pu/243Pu/244Pu/245Pu/246Pu/248Cf/249Cf/250Cf, 248Cm(209Bi, X)246Cm/247Cm/248Cm/249Cm/250Cm, E not given; measured reaction products, Eγ, Iγ. 245Pu, 247Cm, 249Cf; deduced energy levels, J, π, rotational bands, high-spins, deformations. Comparison with available data, Cranked WS model.

doi: 10.1016/j.physletb.2014.10.021
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2014RE12      Phys.Rev. C 90, 044318 (2014)

W.Reviol, R.V.F.Janssens, S.Frauendorf, D.G.Sarantites, M.P.Carpenter, X.Chen, C.J.Chiara, D.J.Hartley, K.Hauschild, T.Lauritsen, A.Lopez-Martens, M.Montero, O.L.Pechenaya, D.Seweryniak, J.B.Snyder, S.Zhu

Characterization of octupole-type structures in 221Th

NUCLEAR REACTIONS 207Pb(18O, 4n), E=96 MeV; measured Eγ, Iγ, γγ-, (evaporation residues)γ-coin, γ(θ) using Gammasphere and HERCULES detector arrays at ATLAS-ANL facility. 221Th; deduced high-spin levels, J, π, multipolarity, mixing ratio, bands, alternating-parity sequences and multiple octupole structures, B(E1)/B(E2) and B(M1)/B(E2) ratios, alignment plots. Systematics of octupole structures, parity splitting, and other properties in 218,219,220,221,222Ra, 219,220,221,222,223,224Th.

doi: 10.1103/PhysRevC.90.044318
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2014YA30      Phys.Rev. C 90, 054325 (2014)

R.B.Yadav, W.C.Ma, J.C.Marsh, Q.A.Ijaz, R.V.F.Janssens, M.P.Carpenter, C.R.Hoffman, T.Lauritsen, S.Zhu, F.G.Kondev, G.Gurdal, G.B.Hagemann, D.J.Hartley, L.L.Riedinger, S.Mukhopadhyay

Multiple excitation modes in 163Hf

NUCLEAR REACTIONS 94Zr(74Ge, 5n), E=330 MeV; measured Eγ, Iγ, multi-fold γγ-coin, γγ(θ)(DCO) using Gammasphere array at ATLAS-ANL facility. 163Hf; deduced high-spin levels, J, π, multipolarity, bands, configurations, alignments, no evidence for triaxial strongly-deformed bands. Comparison with cranking model calculations using ULTIMATE CRANKER code. Systematics of proton crossing frequencies and aligned angular momenta in A=162-172 Hf isotopes, bandhead energies of 3/2[521] and 5/2[523] configurations in 155Gd, 157Dy, 159Er, 161Yb, 163Hf, and alignments in 159Er and 163Hf.

doi: 10.1103/PhysRevC.90.054325
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2013HA02      Phys.Rev. C 87, 024315 (2013)

D.J.Hartley, R.V.F.Janssens, L.L.Riedinger, M.A.Riley, X.Wang, S.Miller, A.D.Ayangeakaa, P.F.Bertone, M.P.Carpenter, C.J.Chiara, P.Chowdhury, U.Garg, G.Gurdal, S.S.Hota, F.G.Kondev, T.Lauritsen, W.C.Ma, J.Matta, E.A.McCutchan, S.Mukhopadhyay, E.E.Pedicini, J.R.Vanhoy, S.Zhu

Multiple band structures in 169, 170Re: Search for the wobbling mode in 169Re, and residual-interaction analysis of structures in 170Re

NUCLEAR REACTIONS 118Sn(55Mn, X), E=260 MeV; measured Eγ, Iγ, γγ-coin, using the Gammasphere. 169,170Re; deduced levels, J, π, B(M1)/B(E2), bands, configurations; calculated B(M1)/B(E2).

NUCLEAR STRUCTURE 164,166,168Lu, 166,168,170,172Ta, 170,172,174Re, 176Ir; calculated residual interactions. 163,165,167,169,171Lu, 165,167,169,171,173Ta, 169,171,173,175Re, 173,175,177Ir; calculated relative levels of πi13/2, πh9/2, πh11/2 bands.

doi: 10.1103/PhysRevC.87.024315
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2013HA36      Phys.Rev. C 88, 044323 (2013)

D.J.Hartley, E.E.Pedicini, R.V.F.Janssens, L.L.Riedinger, M.A.Riley, X.Wang, S.Miller, A.D.Ayangeakaa, M.P.Carpenter, J.J.Carroll, J.Cavey, C.J.Chiara, P.Chowdhury, U.Garg, S.S.Hota, E.G.Jackson, F.G.Kondev, T.Lauritsen, M.Litz, W.C.Ma, J.Matta, E.S.Paul, J.Simpson, J.R.Vanhoy, S.Zhu

Possible deformation evolution in the π i13/2 structure of 171Re

NUCLEAR REACTIONS 120Sn(55Mn, 4n), E=257 MeV; measured Eγ, Iγ, γγ-coin, three- and higher-fold coincidences, angular correlation ratios using Gammasphere array at ATLAS-ANL facility. 171Re; deduced high-spin levels, J, π, multipolarity, rotational bands, alignments, configurations, B(M1)/B(E2), moment of inertia plots. No evidence found for wobbling mode of excitation. Comparison with cranked shell-model calculations.

doi: 10.1103/PhysRevC.88.044323
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2013MA73      Phys.Rev. C 88, 041306 (2013)

J.C.Marsh, W.C.Ma, G.B.Hagemann, R.V.F.Janssens, R.Bengtsson, H.Ryde, M.P.Carpenter, G.Gurdal, D.J.Hartley, C.R.Hoffman, Q.A.Ijaz, F.G.Kondev, T.Lauritsen, S.Mukhopadhyay, L.L.Riedinger, R.B.Yadav, S.Zhu

Identification of triaxial strongly deformed bands in 164Hf

NUCLEAR REACTIONS 94Zr(74Ge, 4n), E=330 MeV; measured Eγ, Iγ, γγ-coin, four-fold γ coin using Gammasphere array at ATLAS-ANL facility. 164Hf; deduced high-spin levels, J, π, normal-deformed and triaxial strongly-deformed (TSD) bands, configurations, alignments; calculated total energy surface contours. Cranked shell-model calculations using Ultimate Cranker computer code.

doi: 10.1103/PhysRevC.88.041306
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2012OK04      Phys.Rev. C 86, 054305 (2012)

Y.Oktem, D.L.Balabanski, B.Akkus, L.Amon Susam, L.Atanasova, C.W.Beausang, R.B.Cakirli, R.F.Casten, M.Danchev, M.Djongolov, E.Ganioglu, K.A.Gladnishki, J.Tm.Goon, D.J.Hartley, A.A.Hecht, R.Krucken, J.R.Novak, G.Rainovski, L.L.Riedinger, T.Venkova, I.Yigitoglu, N.V.Zamfir, O.Zeidan

Triaxial deformation and nuclear shape transition in 192Au

NUCLEAR REACTIONS 186W(11B, 5n), E=68 MeV; measured Eγ, Iγ, γγ-coin, γγ(θ)(DCO), linear polarization using YRAST Ball array at WNSL, Yale facility. 192Au; deduced high-spin levels, J, π, multipolarity, branching ratios, alignments, bands, B(M1)/B(E2), configurations. Comparisons with pairing and deformation self-consistent total Routhian surface (TRS), and cranked shell model (CSM) calculations.

doi: 10.1103/PhysRevC.86.054305
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2012WA39      J.Phys.:Conf.Ser. 381, 012065 (2012)

X.Wang, M.A.Riley, J.Simpson, E.S.Paul, R.V.F.Janssens, A.D.Ayangeakaa, H.C.Boston, M.P.Carpenter, C.J.Chiara, U.Garg, P.Hampson, D.J.Hartley, C.R.Hoffman, D.S.Judson, F.G.Kondev, T.Lauritsen, N.M.Lumley, J.Matta, S.Miller, P.J.Nolan, J.Oilier, M.Petri, D.C.Radford, J.M.Rees, J.P.Revill, L.L.Riedinger, S.V.Rigby, C.Unsworth, S.Zhu, I.Ragnarsson

Collective structures up to spin ∼ 65h-(bar) in the N = 90 isotones 158Er and 157Ho

NUCLEAR REACTIONS 114Cd(48Ca, X)158Er, E=215 MeV;124Sn(37Cl, X)157Ho, E=177 MeV; measured Eγ, Iγ, γγ-coin using Compton-suppressed HPGe detectors of Gammasphere; analyzed Doppler shifts. 158Er, 157Ho deduced high-spin (ultrahigh-spin) rotational bands, transition quadrupole moments, Doppler shift vs Eγ.

doi: 10.1088/1742-6596/381/1/012065
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2012ZH22      Phys.Rev. C 85, 064307 (2012)

Y.C.Zhang, Q.A.Ijaz, W.C.Ma, G.B.Hagemann, M.P.Carpenter, P.Chowdhury, D.M.Cullen, M.K.Djongolov, D.J.Hartley, R.V.F.Janssens, T.L.Khoo, F.G.Kondev, T.Lauritsen, E.Ngiojoi-Yogo, S.Odegard, L.L.Riedinger, S.V.Rigby, D.G.Roux, D.T.Scholes, R.B.Yadav, S.Zhu

High-spin proton alignments and evidence for a second band with enhanced deformation in 171Hf

NUCLEAR REACTIONS 128Te(48Ca, 5n), E=209 MeV; measured Eγ, Iγ, γγ-coin, DCO ratios. 171Hf; deduced high-spin levels, J, π, rotational high-K and enhanced deformation bands, multipolarity, configurations, B(M1)/B(E2) ratios, alignments, band crossing frequencies. Comparison with cranked shell-model calculations.

doi: 10.1103/PhysRevC.85.064307
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2011HA25      Phys.Rev. C 83, 064307 (2011)

D.J.Hartley, R.V.F.Janssens, L.L.Riedinger, M.A.Riley, X.Wang, A.Aguilar, M.P.Carpenter, C.J.Chiara, P.Chowdhury, I.G.Darby, U.Garg, Q.A.Ijaz, F.G.Kondev, S.Lakshmi, T.Lauritsen, A.Ludington, W.C.Ma, E.A.McCutchan, S.Mukhopadhyay, R.Pifer, E.P.Seyfried, U.Shirwadkar, I.Stefanescu, S.K.Tandel, J.R.Vanhoy, S.Zhu, S.Frauendorf

Rotational structures and the wobbling mode in 167Ta

NUCLEAR REACTIONS 120Sn(51V, 4n), E=235 MeV; measured Eγ, Iγ, γγ-coin γγ(θ) using Gammasphere array. 167Ta; deduced levels, J, π, multipolarity, B(M1)/B(E2), rotational bands, alignments, band crossing frequencies, band configurations. Comparison with particle-rotor model calculations, and trends in the wobbling phonon energies in 161,163,165,167Lu, and 167Ta.

doi: 10.1103/PhysRevC.83.064307
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2011MU02      Phys.Rev. C 83, 044311 (2011)

S.Mukhopadhyay, W.C.Ma, R.V.F.Janssens, M.P.Carpenter, C.J.Chiara, P.Chowdhury, D.M.Cullen, G.B.Hagemann, D.J.Hartley, S.S.Hota, Q.A.Ijaz, T.L.Khoo, F.G.Kondev, S.Lakshmi, T.Lauritsen, J.Marsh, L.L.Riedinger, Y.Toh, R.B.Yadav, S.Zhu

Quadrupole moment measurements for strongly deformed bands in 171, 172Hf

NUCLEAR REACTIONS 128Te(48Ca, 4n), (48Ca, 5n), E=207 MeV; measured Eγ, Iγ, γγ-coin, DSAM using Gammasphere Spectrometer. 171,172Hf; deduced half-lives, transition quadrupole moments for enhanced deformation (ED) and triaxial strongly-deformed (TSD) bands, dynamic moment of inertia plots. Comparison of transition quadrupole moments of ED and TSD bands in 163Lu, 168,171,172,173,174,175Hf. Cranking calculations using Ultimate Cranker code.

doi: 10.1103/PhysRevC.83.044311
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2011MU19      Phys.Rev. C 84, 054320 (2011)

M.Mustafa, J.Ollier, J.Simpson, M.A.Riley, E.S.Paul, X.Wang, A.Aguilar, M.P.Carpenter, I.G.Darby, D.J.Hartley, R.V.F.Janssens, F.G.Kondev, T.Lauritsen, P.J.Nolan, M.Petri, J.M.Rees, J.P.Revill, S.V.Rigby, C.Teal, J.Thomson, C.Unsworth, S.Zhu, B.G.Carlsson, H.L.Ma, T.Mufti, I.Ragnarsson

Diverse collective excitations in 159Er up to high spin

NUCLEAR REACTIONS 116Cd(48Ca, 5n), E=215 MeV; measured Eγ, Iγ, γγ-coin, γ(θ) using Gammasphere array. 159Er; deduced levels, J, π, multipolarities, bands, triaxial SD band, configurations, alignment plots, band termination, oblate structures, unpaired band crossings; calculated potential energy surfaces. Comparison with cranked Nilsson-Strutinsky (CNS) calculations. systematics of γ-vibrational states in N=88-94 Er nuclei.

doi: 10.1103/PhysRevC.84.054320
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2011OL02      Phys.Rev. C 83, 044309 (2011)

J.Ollier, J.Simpson, M.A.Riley, E.S.Paul, X.Wang, A.Aguilar, M.P.Carpenter, I.G.Darby, D.J.Hartley, R.V.F.Janssens, F.G.Kondev, T.Lauritsen, P.J.Nolan, M.Petri, J.M.Rees, S.V.Rigby, C.Teal, J.Thomson, C.Unsworth, S.Zhu, A.Kardan, I.Ragnarsson

Structure changes in 160Er from low to ultrahigh spin

NUCLEAR REACTIONS 116Cd(48Ca, 4n), E=215 MeV; measured Eγ, Iγ, γγ-coin, angular distributions using Gammasphere Spectrometer. 160Er; deduced levels, J, π, rotational bands, triaxial strongly-deformed (TSD) bands, multipolarity, configurations, angular momentum alignments, B(M1)/B(E2) ratios, potential energy surfaces, dynamic moment of inertia plots, ultra-high spin regime. Comparison with cranked Nilsson-Strutinsky (CNS) calculations.

doi: 10.1103/PhysRevC.83.044309
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2011OL03      Phys.Rev. C 84, 027302 (2011)

J.Ollier, J.Simpson, M.A.Riley, E.S.Paul, X.Wang, A.Aguilar, M.P.Carpenter, I.G.Darby, D.J.Hartley, R.V.F.Janssens, F.G.Kondev, T.Lauritsen, P.J.Nolan, M.Petri, S.V.Rigby, C.Teal, J.Thomson, C.Unsworth, S.Zhu

High-spin yrast structure of 159Ho

NUCLEAR REACTIONS 116Cd(48Ca, 4np), E=215 MeV; measured Eγ, Iγ, γγ-coin using Gammasphere array and ATLAS facility at ANL. 159Ho; deduced levels, J, π, rotational bands, configurations, alignments, signature splitting. Comparison with systematics of signature splittings in N=92 isotones 155Eu, 157Tb, 159Ho, 161Tm, 163Lu, 165Ta; and alignments in 160Er, 155,157,159,161,163,165Ho.

doi: 10.1103/PhysRevC.84.027302
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2011RE04      Acta Phys.Pol. B42, 671 (2011)

W.Reviol, D.G.Sarantites, X.Chen, M.Montero, O.L.Pechenaya, J.Snyder, R.V.F.Janssens, M.P.Carpenter, C.J.Chiara, T.L.Khoo, T.Lauritsen, C.J.Lister, D.Seweryniak, S.Zhu, K.Hauschild, A.Lopez-Martens, D.J.Hartley, S.Frauendorf

Tidal Waves and Onset of Collectivity above N = 126

NUCLEAR REACTIONS 198Pt(26Mg, X)219Th/220Th, E=128 MeV; 207Pb(18O, X)218Ra/221Th, E=96 MeV; measured reaction products, Eγ, Iγ, ER nucleus-γ-coin.; deduced level scheme, B(E1)/B(E2) ratios as a function of spin, tidal-wave concept.

doi: 10.5506/APhysPolB.42.671
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2011RE06      Phys.Rev. C 83, 044314 (2011)

J.M.Rees, E.S.Paul, M.A.Riley, J.Simpson, A.D.Ayangeakaa, H.C.Boston, M.P.Carpenter, C.J.Chiara, U.Garg, D.J.Hartley, R.V.F.Janssens, D.S.Judson, F.G.Kondev, T.Lauritsen, N.M.Lumley, J.Matta, P.J.Nolan, J.Ollier, M.Petri, J.P.Revill, L.L.Riedinger, S.V.Rigby, C.Unsworth, X.Wang, S.Zhu

Non-yrast positive-parity structures in the γ -soft nucleus 156Er

NUCLEAR REACTIONS 114Cd(48Ca, 6n), E=215 MeV; measured Eγ, Iγ, γγ-coin, angular distributions using Gammasphere spectrometer. 156Er; deduced levels, J, π, rotational bands, multipolarity, alignments, staggering parameter, configurations. Comparison with predictions of γ-rigid and γ-soft rotor model. Systematics of γ-vibrational bands for Z=68 isotopes and N=88 isotones.

doi: 10.1103/PhysRevC.83.044314
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2011WA14      Phys.Lett. B 702, 127 (2011)

X.Wang, M.A.Riley, J.Simpson, E.S.Paul, J.Ollier, R.V.F.Janssens, A.D.Ayangeakaa, H.C.Boston, M.P.Carpenter, C.J.Chiara, U.Garg, D.J.Hartley, D.S.Judson, F.G.Kondev, T.Lauritsen, N.M.Lumley, J.Matta, P.J.Nolan, M.Petri, J.P.Revill, L.L.Riedinger, S.V.Rigby, C.Unsworth, S.Zhu, I.Ragnarsson

Quadrupole moments of collective structures up to spin ∼ 65h in 157Er and 158Er: A challenge for understanding triaxiality in nuclei

NUCLEAR REACTIONS 114Cd(48Ca, X)157Er/158Er, E=215 MeV; measured reaction products, Eγ, Iγ, γ-γ-coin.; deduced transition quadrupole moments for weakly populated collective bands, large deformations, stable triaxial shapes. Comparison with Nilsson-Strutinsky calculations.

doi: 10.1016/j.physletb.2011.07.007
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2010AG06      Phys.Rev. C 81, 064317 (2010)

A.Aguilar, D.J.Hartley, M.A.Riley, C.Teal, M.P.Carpenter, P.Chowdhury, M.Danchev, M.K.Djongolov, G.B.Hagemann, A.A.Hecht, R.V.F.Janssens, F.G.Kondev, T.Lauritsen, W.C.Ma, W.H.Mohr, E.F.Moore, S.W.Odegard, L.L.Riedinger, G.Sletten, S.K.Tandel, J.R.Vanhoy, X.Wang, S.Zhu

Alignments, additivity, and signature inversion in odd-odd 170Ta: A comprehensive high-spin study

NUCLEAR REACTIONS 124Sn(51V, 5n), E=228 MeV; measured Eγ, Iγ, γγ-coin, γγ(θ) using Gammasphere array. 170Ta; deduced levels, J, π, rotational bands, configurations, Routhians, signature inversions, B(M1)/B(E2) ratios.

doi: 10.1103/PhysRevC.81.064317
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2010HA26      Phys.Rev. C 82, 057302 (2010)

D.J.Hartley, R.V.F.Janssens, L.L.Riedinger, M.A.Riley, X.Wang, A.Aguilar, M.P.Carpenter, C.J.Chiara, P.Chowdhury, I.G.Darby, U.Garg, Q.A.Ijaz, F.G.Kondev, S.Lakshmi, T.Lauritsen, W.C.Ma, E.A.McCutchan, S.Mukhopadhyay, E.P.Seyfried, U.Shirwadkar, I.Stefanescu, S.K.Tandel, J.R.Vanhoy, S.Zhu

Band crossings in 166Ta

NUCLEAR REACTIONS 120Sn(51V, 5n), E=235 MeV; measured Eγ, Iγ, γγ-coin, γγ(θ) using Gammasphere array. 166Ta; deduced levels, J, π, rotational bands, alignments and B(M1)/B(E2) ratios. Comparison of alignments with those in 165Hf bands. Comparison with theoretical B(M1)/B(E2) ratios.

doi: 10.1103/PhysRevC.82.057302
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2010MU13      Phys.Rev. C 82, 054316 (2010)

G.Mukherjee, P.Chowdhury, F.G.Kondev, P.M.Walker, G.D.Dracoulis, R.D'Alarcao, I.Shestakova, K.Abu Saleem, I.Ahmad, M.P.Carpenter, A.Heinz, R.V.F.Janssens, T.L.Khoo, T.Lauritsen, C.J.Lister, D.Seweryniak, I.Wiedenhoever, D.M.Cullen, C.Wheldon, D.L.Balabanski, M.Danchev, T.M.Goon, D.J.Hartley, L.L.Riedinger, O.Zeidan, M.A.Riley, R.A.Kaye, G.Sletten

K-hindered decay of a six-quasiparticle isomer in 176Hf

NUCLEAR REACTIONS 130Te(48Ca, 2n), E=194 MeV; measured Eγ, Iγ, γγ-coin, half-lives using Gammasphere array. Beam-on, beam-off measurements of γ spectra. 176Hf; deduced levels, J, π, rotational bands, isomers, multipolarity, configurations, reduced hindrance factors for K-isomers.

doi: 10.1103/PhysRevC.82.054316
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2010TA22      Phys.Rev. C 82, 041301 (2010)

S.K.Tandel, P.Chowdhury, S.Lakshmi, U.S.Tandel, I.Ahmad, M.P.Carpenter, S.Gros, R.V.F.Janssens, T.L.Khoo, F.G.Kondev, J.P.Greene, D.J.Hartley, T.Lauritsen, C.J.Lister, D.Peterson, A.Robinson, D.Seweryniak, S.Zhu

Rotational bands in odd-A Cm and Cf isotopes: Exploring the highest neutron orbitals

NUCLEAR REACTIONS 248Cm(209Bi, 210Bi)247Cm, E=1450 MeV; 250Cm(209Bi, 208Bi)249Cm, E=1450 MeV; 249Cf(207Pb, 207Pb'), E=1430 MeV; measured Eγ, Iγ, γγ-coin using Gammasphere array. 247,249Cm, 249Cf; deduced levels, J, π, (gK-gR)/Q0, alignments, Nilsson configurations, and rotational bands. 197Au, 207Pb, 208Bi, 210Bi; measured Eγ. Systematics of alignments for 244Pu, 246Cm, 248Cf, 250Fm and 252No, Comparison with Woods-Saxon cranking calculations.

doi: 10.1103/PhysRevC.82.041301
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2010WA36      Phys.Rev. C 82, 034315 (2010)

X.Wang, D.J.Hartley, M.A.Riley, L.L.Riedinger, A.Aguilar, M.P.Carpenter, C.J.Chiara, P.Chowdhury, I.Darby, U.Garg, Q.Ijaz, R.V.F.Janssens, F.G.Kondev, S.Lakshmi, T.Lauritsen, W.C.Ma, E.A.McCutchan, S.Mukhopadhyay, E.P.Seyfried, I.Stefanescu, S.K.Tandel, U.S.Tandel, C.Teal, J.R.Vanhoy, S.Zhu

Multi-quasiparticle structures up to spin ∼ 44h in the odd-odd nucleus 168Ta

NUCLEAR REACTIONS 120Sn(51V, 3n), E=235 MeV; measured Eγ, Iγ, γγ-coin using Gammasphere array. 168Ta, deduced levels, J, π, B(M1)/B(E2) values, energy staggerings of signature partners, alignments, two-quasiparticle bands, configurations. Comparisons with cranked shell model calculations, and with band structures of 162,164,166Tm, 164,166,169Lu, 167Hf and 166,167,170Ta.

doi: 10.1103/PhysRevC.82.034315
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2009BA52      Phys.Rev. C 80, 054318 (2009)

J.C.Batchelder, J.L.Wood, P.E.Garrett, K.L.Green, K.P.Rykaczewski, J.-C.Bilheux, C.R.Bingham, H.K.Carter, D.Fong, R.Grzywacz, J.H.Hamilton, D.J.Hartley, J.K.Hwang, W.Krolas, W.D.Kulp, Y.Larochelle, A.Piechaczek, A.V.Ramayya, E.H.Spejewski, D.W.Stracener, M.N.Tantawy, J.A.Winger, E.F.Zganjar

Collective and noncollective states in 116Cd studied via the β decays of 116Agm1, m2, gs

RADIOACTIVITY 116,116mAg(β-) [from 238U(p, X), E not given]; measured Eγ, Iγ, γγ-coin, ce, and half-lives using HRIBF facility. 116Ag, 116Cd; deduced levels, J, π, conversion coefficients, multipolarities, logft, and BE2 rates. Comparisons with IBM-2 calculations, and with low-energy 0+ and 2+ level systematics of 110,112,114,116,118,120Cd.

doi: 10.1103/PhysRevC.80.054318
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2009DU04      Acta Phys.Pol. B40, 713 (2009)

J.Dudek, K.Mazurek, D.Curien, A.Dobrowolski, A.Gozdz, D.Hartley, A.Maj, L.Riedinger, N.Schunck

Theory of Nuclear Stability Using Point GROUP Symmetries: Outline and Illustrations


2009HA33      Phys.Rev. C 80, 041304 (2009); Publishers Note, Phys.Rev. C 80, 059901 (2009)

D.J.Hartley, R.V.F.Janssens, L.L.Riedinger, M.A.Riley, A.Aguilar, M.P.Carpenter, C.J.Chiara, P.Chowdhury, I.G.Darby, U.Garg, Q.A.Ijaz, F.G.Kondev, S.Lakshmi, T.Lauritsen, A.Ludington, W.C.Ma, E.A.McCutchan, S.Mukhopadhyay, R.Pifer, E.P.Seyfried, I.Stefanescu, S.K.Tandel, U.Tandel, J.R.Vanhoy, X.Wang, S.Zhu, I.Hamamoto, S.Frauendorf

Wobbling mode in 167Ta

NUCLEAR REACTIONS 120Sn(51V, 4n), E=235 MeV; measured Eγ, Iγ, γγ-coin and γγ(θ) using Gammasphere array. 167Ta; deduced levels, J, π, triaxial superdeformed bands, normal deformed bands, dynamic moments of inertia, alignments and rotational frequency. Comparison with ultimate cranked (UC) calculations.

doi: 10.1103/PhysRevC.80.041304
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2009OL09      Phys.Rev. C 80, 064322 (2009)

J.Ollier, J.Simpson, X.Wang, M.A.Riley, A.Aguilar, C.Teal, E.S.Paul, P.J.Nolan, M.Petri, S.V.Rigby, J.Thomson, C.Unsworth, M.P.Carpenter, R.V.F.Janssens, F.G.Kondev, T.Lauritsen, S.Zhu, D.J.Hartley, I.G.Darby, I.Ragnarsson

Ultrahigh-spin spectroscopy of 159, 160Er: Observation of triaxial strongly deformed structures

NUCLEAR REACTIONS 116Cd(48Ca, X), E=215 MeV; measured Eγ, Iγ, γγ using Gammasphere array. 159,160Er; deduced levels, J, π, triaxial strongly deformed (TSD) bands, dynamical moment of inertia plots, and configurations. Calculated potential energy surfaces and single-particle proton and neutron energies (Routhians) with Cranked Nilsson-Strutinsky approach.

doi: 10.1103/PhysRevC.80.064322
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2009RI05      Acta Phys.Pol. B40, 513 (2009)

M.A.Riley, A.Aguilar, A.O.Evans, D.J.Hartley, K.Lagergren, J.Ollier, E.S.Paul, A.Pipidis, J.Simpson, C.Teal, P.J.Twin, X.Wang, D.E.Appelbe, D.B.Campbell, M.P.Carpenter, R.M.Clark, M.Cromaz, I.G.Darby, P.Fallon, U.Garg, R.V.F.Janssens, D.T.Joss, F.G.Kondev, T.Lauritsen, I.Y.Lee, C.J.Lister, A.O.Macchiavelli, P.J.Nolan, M.Petri, S.V.Rigby, J.Thompson, C.Unsworth, D.Ward, S.Zhu, I.Ragnarsson

Strongly Deformed Nuclear Shapes at Ultra-High Spin and Shape Coexistence in ∼ 90 Nuclei


2009YA21      Phys.Rev. C 80, 064306 (2009)

R.B.Yadav, W.C.Ma, G.B.Hagemann, H.Amro, A.Bracco, M.P.Carpenter, J.Domscheit, S.Frattini, D.J.Hartley, B.Herskind, H.Hubel, R.V.F.Janssens, T.L.Khoo, F.G.Kondev, T.Lauritsen, C.J.Lister, B.Million, S.Odegard, L.L.Riedinger, K.A.Schmidt, S.Siem, G.Sletten, P.G.Varmette, J.N.Wilson, Y.C.Zhang

High-spin proton alignments and coexisting coupling schemes in 168Hf

NUCLEAR REACTIONS 96Zr(76Ge, 4n), E=310 MeV; measured Eγ, Iγ, γγ-coin, γγ(θ)(DCO) using Gammasphere array. 168Hf; deduced levels, J, π, bands, multipolarity, B(M1)/B(E2) ratios, configurations, and enhanced deformation band. Comparison with cranked shell-model calculations.

doi: 10.1103/PhysRevC.80.064306
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2008AG04      Phys.Rev. C 77, 021302 (2008)

A.Aguilar, D.B.Campbell, K.Chandler, A.Pipidis, M.A.Riley, C.Teal, J.Simpson, D.J.Hartley, F.G.Kondev, R.M.Clark, M.Cromaz, P.Fallon, I.Y.Lee, A.O.Macchiavelli, I.Ragnarsson

New shape minimum in 160Yb: Evidence for a triaxial, strongly deformed band

NUCLEAR REACTIONS 120Sn(44Ca, 4n), E=210 MeV; measured Eγ, Iγ, γγ-coin; calculated potential energy surfaces; 160Yb; deduced excitation energies, configurations, high-spin rotational bands, triaxial strongly-deformed bands. 157,158Er, 161Lu; systematics, comparison with theory.

doi: 10.1103/PhysRevC.77.021302
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2008GU02      Phys.Rev. C 77, 024314 (2008)

G.Gurdal, C.W.Beausang, D.S.Brenner, H.Ai, R.F.Casten, B.Crider, A.Heinz, E.Williams, D.J.Hartley, M.P.Carpenter, A.A.Hecht, R.V.F.Janssens, T.Lauritsen, C.J.Lister, R.Raabe, D.Seweryniak, S.Zhu, J.X.Saladin

Measurement of conversion coefficients in normal and triaxial strongly deformed bands in 167Lu

NUCLEAR REACTIONS 123Sb(48Ca, 4n), E=203 MeV; measured Eγ, Iγ, conversion electrons; 167Lu; deduced conversion coefficients.

doi: 10.1103/PhysRevC.77.024314
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2008HA39      Phys.Rev. C 78, 054319 (2008); Publishers Note Phys.Rev. C 78, 069901 (2008)

D.J.Hartley, E.P.Seyfried, W.Reviol, D.G.Sarantites, C.J.Chiara, O.L.Pechenaya, K.Hauschild, A.Lopez-Martens, M.P.Carpenter, R.V.F.Janssens, D.Seweryniak, S.Zhu

Possible shears bands in 204At and 206Fr, and identification of excited states in 205, 207Fr

NUCLEAR REACTIONS 181Ta(30Si, X), E=152 MeV; measured Eγ, Iγ, γγ-coin.204At, 205,206,207Fr; deduced levels, J, π, B(M1), B(E2), magnetic rotational bands. 202,204,206,208,210,212,214,216,218,220,222Rn; 205,207,209,211,213,215,217,219,221,223Fr, 206,208,210,212,214,216,218,220,222,224Fr; energy systematics. 205Rn, 198,199,200,201,202Bi, 197,198,199,200,201Pb; systematics of spin and rotational energy.

doi: 10.1103/PhysRevC.78.054319
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2008TA03      Phys.Rev. C 77, 024313 (2008)

S.K.Tandel, A.J.Knox, C.Parnell-Lampen, U.S.Tandel, P.Chowdhury, M.P.Carpenter, R.V.F.Janssens, T.L.Khoo, T.Lauritsen, C.J.Lister, D.Seweryniak, X.Wang, S.Zhu, D.J.Hartley, J.-ye.Zhang

Search for strongly deformed structures and observation of multiple nucleon alignments in 174W

NUCLEAR REACTIONS 128Te(50Ti, 4n), E=230 MeV; measured Eγ, Iγ, γγ-coin; 174W; deduced levels, J, π, band alignments, searched for triaxial strongly deformed bands. 163,164,165,167Lu, 174,175Hf; analyzed energy spacings.

doi: 10.1103/PhysRevC.77.024313
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2008TE07      Phys.Rev. C 78, 017305 (2008)

C.Teal, K.Lagergren, A.Aguilar, D.J.Hartley, M.A.Riley, J.Simpson, M.P.Carpenter, U.Garg, R.V.F.Janssens, D.T.Joss, F.G.Kondev, T.Lauritsen, C.J.Lister, X.Wang, S.Zhu, I.Ragnarsson

Triaxial strongly deformed bands in 160, 161Tm

NUCLEAR REACTIONS 128Te(37Cl, 5n), (37Cl, 4n), E=170 MeV; measured Eγ, Iγ, γγ-coin. 160,161Tm; deduced levels, J, π, triaxial strongly-deformed bands(TSD), moments of inertia. 154,157Er, 163Lu, 153,163Tm; systematics of bands. Comparison with potential energy surfaces calculated using cranked Nilsson Strutinsky calculations. Superdeformation.

doi: 10.1103/PhysRevC.78.017305
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2008YA20      Phys.Rev. C 78, 044316 (2008)

R.B.Yadav, W.C.Ma, G.B.Hagemann, R.Bengtsson, H.Ryde, H.Amro, A.Bracco, M.P.Carpenter, J.Domscheit, S.Frattini, D.J.Hartley, B.Herskind, H.Hubel, R.V.F.Janssens, T.L.Khoo, F.G.Kondev, T.Lauritsen, C.J.Lister, B.Million, S.Odegard, L.L.Riedinger, K.A.Schmidt, S.Siem, G.Sletten, P.G.Varmette, J.N.Wilson, Y.C.Zhang

Identification of triaxial strongly deformed bands in 168Hf

NUCLEAR REACTIONS 96Zr(76Ge, 4n), E=310 MeV; measured Eγ, Iγ, γγ-coin, angular distributions. 168Hf; deduced levels, J, π, bands, configurations, strongly deformed triaxial bands. 170,171,175Hf; systematics of bands. Comparison with cranked shell model calculations.

doi: 10.1103/PhysRevC.78.044316
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2007BE33      Acta Phys.Pol. B38, 1535 (2007)

C.W.Beausang, S.R.Lesher, J.T.Burke, L.A.Bernstein, L.Phair, H.Ai, G.Gurdal, L.Ahle, D.S.Brenner, M.Carpenter, R.M.Clark, B.Crider, J.Escher, P.Fallon, J.P.Greene, D.J.Hartley, A.A.Hecht, R.V.F.Janssens, T.Lauritsen, I.Y.Lee, C.J.Lister, A.O.Macchiavelli, M.A.McMahan, C.Plettner, J.Rohrer, D.Seweryniak, E.Williams, S.Zhu

New Results on Fission Cross Sections in Actinide Nuclei Using the Surrogate Ratio Method and on Conversion Coefficients in Triaxial Strongly Deformed Bands in 167Lu from ICE Ball and Gammasphere

NUCLEAR REACTIONS 234,236U(α, α'f), E=55 MeV; measured Eα, fission fragment energy, (fission-fragment)α-coinc. Deduced fission probabilities. Compared results to ENDF data.

NUCLEAR REACTIONS 123Sb(48Ca, X)167Lu, E=203 MeV; measured Eγ, Iγ, conversion electron energies, γγ-coinc, (conversion-electron)γ-coinc. 167Lu deduced conversion coefficients.


2007CA25      Phys.Rev. C 75, 064314 (2007)

D.B.Campbell, R.W.Laird, M.A.Riley, J.Simpson, F.G.Kondev, D.J.Hartley, R.V.F.Janssens, T.B.Brown, M.P.Carpenter, P.Fallon, S.M.Fischer, T.Lauritsen, D.Nisius, I.Ragnarsson

Rotational structures and their evolution with spin in 152Gd

NUCLEAR REACTIONS 124Sn(36S, 4nα)152Gd, e=175 MeV; measured Eγ, Iγ, γγ-coinc using the Gammasphere. 152Gd deduced levels, J, π. Compared results to model calculations.

doi: 10.1103/PhysRevC.75.064314
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2007OK05      Phys.Rev. C 76, 044315 (2007); Erratum Phys.Rev. C 78, 069904 (2008)

Y.Oktem, D.L.Balabanski, B.Akkus, C.W.Beausang, M.Bostan, R.B.Cakirli, R.F.Casten, M.Danchev, M.Djongolov, M.N.Erduran, S.Erturk, K.A.Gladniski, G.Gurdal, J.Tm.Goon, D.J.Hartley, A.A.Hecht, R.Krucken, N.Nikolov, J.R.Novak, G.Rainovski, L.L.Riedinger, I.Yigitoglu, N.V.Zamfir, O.Zeidan

High-spin states in 191, 193Au and 192Pt: Evidence for oblate deformation and triaxial shapes

NUCLEAR REACTIONS 186W(11B, 4n), (11B, 4np), (11B, 6n), E=68 MeV; measured Eγ, Iγ, γγ-coin, γγ(θ), linear polarization.191,193Au, 192Pt deduced levels, J, π; calculated deformation parameters using Particle-Plus-Triaxial Rotor model.

doi: 10.1103/PhysRevC.76.044315
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2007ZH46      Phys.Rev. C 76, 064321 (2007)

Y.C.Zhang, W.C.Ma, A.V.Afanasjev, G.B.Hagemann, J.Begnaud, M.P.Carpenter, P.Chowdhury, D.M.Cullen, M.K.Djongolov, D.J.Hartley, R.V.F.Janssens, T.L.Khoo, F.G.Kondev, T.Lauritsen, E.F.Moore, E.Ngijoi-Yogo, S.Odegard, L.L.Riedinger, S.V.Rigby, D.G.Roux, D.T.Scholes, R.B.Yadav, J.-Y.Zhang, S.Zhu

Nuclear shapes of highly deformed bands in 171, 172Hf and neighboring Hf isotopes

NUCLEAR REACTIONS 128Te(48Ca, 4n), (48Ca, 5n), E=209 MeV; measured Eγ, Iγ, γγ-coin. 171,172Hf; deduced levels, J, π, configurations, superdeformed bands. 163Lu, 170,173,174,175Hf; systematics.

doi: 10.1103/PhysRevC.76.064321
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2006HA46      Phys.Rev. C 74, 054314 (2006); Erratum Phys.Rev. C 75, 029902 (2007)

D.J.Hartley, W.H.Mohr, J.R.Vanhoy, M.A.Riley, A.Aguilar, C.Teal, R.V.F.Janssens, M.P.Carpenter, A.A.Hecht, T.Lauritsen, E.F.Moore, S.Zhu, F.G.Kondev, M.K.Djongolov, M.Danchev, L.L.Riedinger, G.B.Hagemann, G.Sletten, P.Chowdhury, S.K.Tandel, W.C.Ma, S.W.Odegard

Multiple band structures in 169Ta

NUCLEAR REACTIONS 124Sn(51V, 6n), E=228 MeV; measured Eγ, Iγ, γγ-coin. 169Ta deduced high-spin levels, J, π, configurations. Gammasphere array.

doi: 10.1103/PhysRevC.74.054314
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2006RI13      Phys.Scr. T125, 123 (2006)

M.A.Riley, M.K.Djongolov, A.O.Evans, D.J.Hartley, R.V.F.Janssens, E.S.Paul, A.Pipidis, J.Simpson, A.A.Aguilar, D.E.Appelbe, C.R.Bingham, D.B.Campbell, M.P.Carpenter, P.Chowdhury, P.T.W.Choy, R.M.Clark, M.Cromaz, D.M.Cullen, M.Danchev, G.D.Dracoulis, P.Fallon, A.Gorgen, G.B.Hagemann, D.T.Joss, J.Goon, R.A.Kaye, T.L.Khoo, F.G.Kondev, R.W.Laird, K.Lagergren, T.Lauritsen, A.O.Macchiavelli, B.McClain, E.F.Moore, G.Mukherjee, E.Ngijoi-Yogo, P.J.Nolan, H.I.Park, L.L.Riedinger, G.Sletten, S.K.Tandel, P.M.Walker, D.Ward, I.Ragnarsson, F.Saric, J.Zhang

Observation of states beyond band termination in 156, 157, 158Er and strongly deformed structures in 173, 174, 175Hf

NUCLEAR REACTIONS 114Cd(48Ca, 4n), (48Ca, 5n), (48Ca, 6n), E=215 MeV; measured Eγ, Iγ, γγ-coin. 156,157,158Er deduced high-spin levels, states above band termination. Gammasphere array.

NUCLEAR STRUCTURE 173,174,175Hf; analyzed data; deduced superdeformed bands features.

doi: 10.1088/0031-8949/2006/T125/028
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2006TA08      Phys.Rev. C 73, 024316 (2006)

M.N.Tantawy, C.R.Bingham, K.P.Rykaczewski, J.C.Batchelder, W.Krolas, M.Danchev, D.Fong, T.N.Ginter, C.J.Gross, R.Grzywacz, K.Hagino, J.H.Hamilton, D.J.Hartley, M.Karny, K.Li, C.Mazzocchi, A.Piechaczek, A.V.Ramayya, K.Rykaczewski, D.Shapira, A.Stolz, J.A.Winger, C.-H.Yu, E.F.Zganjar

Systematics of isomeric configurations in N = 77 odd-Z isotones near the proton drip line

RADIOACTIVITY 140mEu, 142mTb, 144mHo(IT) [from 92Mo(54Fe, xnypzα)]; measured Eγ, Iγ, T1/2. 146,146mTm(p) [from 92Mo(58Ni, 3np)]; measured Ep, T1/2. 140Eu, 142Tb, 144Ho, 145Er, 146Tm deduced levels, J, π, configurations.

doi: 10.1103/PhysRevC.73.024316
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2005BA94      Phys.Rev. C 72, 044306 (2005)

J.C.Batchelder, J.-C.Bilheux, C.R.Bingham, H.K.Carter, D.Fong, P.E.Garrett, R.Grzywacz, J.H.Hamilton, D.J.Hartley, J.K.Hwang, W.Krolas, W.D.Kulp, Y.Larochelle, A.Piechaczek, A.V.Ramayya, K.P.Rykaczewski, E.H.Spejewski, D.W.Stracener, M.N.Tantawy, J.A.Winger, J.L.Wood, E.F.Zganjar

New isomeric state in 116Ag

RADIOACTIVITY 116mAg(IT), 116Ag(β-) [from U(p, F)]; measured E(ce), I(ce), Eγ, Iγ. 116Ag deduced levels, J, π, ICC, isomer T1/2. 116Cd deduced transitions.

doi: 10.1103/PhysRevC.72.044306
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2005GU28      J.Phys.(London) G31, S1873 (2005)

G.Gurdal, H.Amro, C.W.Beausang, D.S.Brenner, M.P.Carpenter, R.F.Casten, C.Engelhardt, G.B.Hagemann, C.R.Hansen, D.J.Hartley, B.Herskind, H.Hubel, T.L.Khoo, T.Lauritsen, W.C.Ma, D.A.Meyer, E.F.Moore, A.Neusser, P.Bringel, D.G.Roux, G.Sletten, R.B.Yadav, Y.Zhang

Quadrupole moment measurements of TSD1 and TSD2 bands in 167Lu

NUCLEAR REACTIONS 123Sb(48Ca, 4n), E=203 MeV; measured Eγ, Iγ, γγ-coin, DSA. 167Lu deduced triaxial superdeformed band transition quadrupole moment. Gammasphere array.

doi: 10.1088/0954-3899/31/10/091
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2005HA05      Phys.Lett. B 608, 31 (2005)

D.J.Hartley, M.K.Djongolov, L.L.Riedinger, G.B.Hagemann, R.V.F.Janssens, F.G.Kondev, E.F.Moore, M.A.Riley, A.Aguilar, C.R.Bingham, D.B.Campbell, M.P.Carpenter, P.Chowdhury, M.Cromaz, D.M.Cullen, M.Danchev, G.D.Dracoulis, P.Fallon, J.Goon, R.A.Kaye, T.L.Khoo, R.W.Laird, T.Lauritsen, A.O.Macchiavelli, B.McClain, G.Mukherjee, E.Ngijoi-Yogo, H.I.Park, G.Sletten, S.K.Tandel, P.M.Walker, J.-Y.Zhang

Wobbling excitations in strongly deformed Hf nuclei?

NUCLEAR REACTIONS 130Te(48Ca, 4n), (48Ca, 5n), E=200, 205 MeV; measured Eγ, Iγ, γγ-coin, DSA. 174Hf deduced superdeformed bands transitions, T1/2, quadrupole moments. 173Hf deduced superdeformed band transitions. Gammasphere array, comparisons with model predictions.

doi: 10.1016/j.physletb.2005.01.007
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2005HA71      Phys.Rev. C 72, 064325 (2005)

D.J.Hartley, W.H.Mohr, J.R.Vanhoy, M.A.Riley, A.Aguilar, C.Teal, R.V.F.Janssens, M.P.Carpenter, A.A.Hecht, T.Lauritsen, E.F.Moore, S.Zhu, F.G.Kondev, M.K.Djongolov, M.Danchev, L.L.Riedinger, G.B.Hagemann, G.Sletten, P.Chowdhury, S.K.Tandel, W.C.Ma, S.W.Odegard

Detailed high-spin spectroscopy and the search for the wobbling mode in 171Ta

NUCLEAR REACTIONS 124Sn(51V, 4n), E=228 MeV; measured Eγ, Iγ, γγ-coin. 171Ta deduced high-spin levels, J, π, configurations. No wobbling sequence seen. Gammasphere array.

doi: 10.1103/PhysRevC.72.064325
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2005PI21      Phys.Rev. C 72, 064307 (2005)

A.Pipidis, M.A.Riley, J.Simpson, R.V.F.Janssens, F.G.Kondev, D.E.Appelbe, A.P.Bagshaw, M.A.Bentley, T.B.Brown, M.P.Carpenter, D.M.Cullen, D.B.Campbell, P.J.Dagnall, P.Fallon, S.M.Fischer, G.B.Hagemann, D.J.Hartley, K.Lagergren, R.W.Laird, T.Lauritsen, J.C.Lisle, D.Nisius, S.L.Shepherd, A.G.Smith, S.Tormanen, I.Ragnarsson

Structural behavior of 157, 158, 159Dy in the I=30-50 (h-bar) spin regime

NUCLEAR REACTIONS 124Sn(36S, 3n), E=165 MeV; 130Te(36S, 3nα), (36S, 4nα), (34S, 3nα), E=170 MeV; measured Eγ, Iγ, γγ-coin. 157,158,159Dy deduced high-spin levels, J, π, configurations. Gammasphere, Euroball arrays.

doi: 10.1103/PhysRevC.72.064307
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2005RA09      Nucl.Phys. A752, 264c (2005)

D.C.Radford, C.Baktash, C.J.Barton, J.Batchelder, J.R.Beene, C.R.Bingham, M.A.Caprio, M.Danchev, B.Fuentes, A.Galindo-Uribarri, J.Gomez del Campo, C.J.Gross, M.L.Halbert, D.J.Hartley, P.Hausladen, J.K.Hwang, W.Krolas, Y.Larochelle, J.F.Liang, P.E.Mueller, E.Padilla, J.Pavan, A.Piechaczek, D.Shapira, D.W.Stracener, R.L.Varner, A.Woehr, C.-H.Yu, N.V.Zamfir

Coulomb excitation and transfer reactions with rare neutron-rich isotopes

NUCLEAR REACTIONS C(126Sn, 126Sn'), (128Sn, 128Sn'), (130Sn, 130Sn'), (132Sn, 132Sn'), (134Sn, 134Sn'), (132Te, 132Te'), (134Te, 134Te'), (136Te, 136Te'), E not given; measured Eγ, Iγ, (particle)γ-coin following projectile Coulomb excitation. 126,128,130,132,134Sn, 132,134,136Te deduced transitions B(E2). 9Be(134Te, 8Be), 13C(134Te, 12C), E not given; measured Eγ, Iγ, γγ-, (particle)γ-coin. 135Te deduced level. Clarion, Hyball arrays.

doi: 10.1016/j.nuclphysa.2005.02.040
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2005RA32      Eur.Phys.J. A 25, Supplement 1, 383 (2005)

D.C.Radford, C.Baktash, C.J.Barton, J.Batchelder, J.R.Beene, C.R.Bingham, M.A.Caprio, M.Danchev, B.Fuentes, A.Galindo-Uribarri, J.Gomez del Campo, C.J.Gross, M.L.Halbert, D.J.Hartley, P.Hausladen, J.K.Hwang, W.Krolas, Y.Larochelle, J.F.Liang, P.E.Mueller, E.Padilla, J.Pavan, A.Piechaczek, D.Shapira, D.W.Stracener, R.L.Varner, A.Woehr, C.-H.Yu, N.V.Zamfir

Coulomb excitation and transfer reactions with neutron-rich radioactive beams

NUCLEAR REACTIONS C(126Sn, 126Sn'), (128Sn, 128Sn'), (130Sn, 130Sn'), (132Te, 132Te'), (134Te, 134Te'), (136Te, 136Te'), E not given; measured Eγ, Iγ, γγ-, (particle)γ-coin following projectile Coulomb excitation. 132,134,136Te, 126,128,130Sn deduced excitation B(E2). 9Be(134Te, 8Be), 13C(134Te, 12C), E=4.3 MeV/nucleon; measured Eγ, Iγ, γγ-coin, (particle)γ-coin; deduced single-neutron transfer σ(E). 135Te deduced levels J, π.

doi: 10.1140/epjad/i2005-06-205-y
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2005RI16      J.Phys.(London) G31, S1735 (2005)

M.A.Riley, M.K.Djongolov, A.O.Evans, D.J.Hartley, R.V.F.Janssens, E.S.Paul, J.Simpson, A.A.Aguilar, D.E.Appelbe, C.R.Bingham, D.B.Campbell, M.P.Carpenter, P.Chowdhury, P.T.W.Choy, R.M.Clark, M.Cromaz, D.M.Cullen, M.Danchev, G.D.Dracoulis, P.Fallon, A.Gorgen, G.B.Hagemann, D.T.Joss, J.Goon, R.A.Kaye, T.L.Khoo, F.G.Kondev, R.W.Laird, K.Lagergren, T.Lauritsen, A.O.Macchiavelli, B.McClain, E.F.Moore, G.Mukherjee, E.Ngijoi-Yogo, P.J.Nolan, H.I.Park, A.Pipidis, L.L.Riedinger, G.Sletten, S.K.Tandel, P.M.Walker, D.Ward, I.Ragnarsson, F.Saric, J.Zhang

Beyond band termination in 157Er and the search for wobbling excitations in strongly deformed 174Hf

NUCLEAR REACTIONS 114Cd(48Ca, 5n), E=215 MeV; measured Eγ, Iγ, γγ-coin. 157Er deduced high-spin levels, J, π, band termination features. Gammasphere array.

NUCLEAR STRUCTURE 173,174Hf; analyzed superdeformed band transitions fractional Doppler shifts, transition quadrupole moments.

doi: 10.1088/0954-3899/31/10/064
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2005TA31      Eur.Phys.J. A 25, Supplement 1, 151 (2005)

M.N.Tantawy, C.R.Bingham, C.Mazzocchi, R.Grzywacz, W.Krolas, K.P.Rykaczewski, J.C.Batchelder, C.J.Gross, D.Fong, J.H.Hamilton, D.J.Hartley, J.K.Hwang, Y.Larochelle, A.Piechaczek, A.V.Ramayya, D.Shapira, J.A.Winger, C.-H.Yu, E.F.Zganjar

Study of the N = 77 odd-Z isotones near the proton-drip line

RADIOACTIVITY 140mEu, 142mTb, 144mHo(IT) [from 54Fe(92Mo, X)]; measured X-ray spectra, Eγ, γγ-coin, E(ce), T1/2. 140Eu, 142Tb, 144Ho dlevels, J, π, configurations. Mass-separated sources.

doi: 10.1140/epjad/i2005-06-194-9
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2004BA91      Phys.Rev. C 70, 044305 (2004)

D.L.Balabanski, M.Danchev, D.J.Hartley, L.L.Riedinger, O.Zeidan, J.Zhang, C.J.Barton, C.W.Beausang, M.A.Caprio, R.F.Casten, J.R.Cooper, A.A.Hecht, R.Krucken, J.R.Novak, N.V.Zamfir, K.E.Zyromski

Possible assignment of chiral twin bands in 188Ir

NUCLEAR REACTIONS 186W(7Li, 5n), E=52 MeV; measured Eγ, Iγ, γγ-coin. 188Ir deduced high-spin levels, J, π, configurations, B(M1)/B(E2), chiral twin bands. Tilted-axis cranking calculations, level systematics in neighboring isotopes discussed.

doi: 10.1103/PhysRevC.70.044305
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2004GO38      Phys.Rev. C 70, 014309 (2004); Erratum Phys.Rev. C 70, 029902 (2004)

J.TM.Goon, D.J.Hartley, L.L.Riedinger, M.P.Carpenter, F.G.Kondev, R.V.F.Janssens, K.H.Abu Saleem, I.Ahmad, H.Amro, J.A.Cizewski, C.N.Davids, M.Danchev, T.L.Khoo, A.Heinz, T.Lauritsen, W.C.Ma, G.L.Poli, J.Ressler, W.Reviol, D.Seweryniak, M.B.Smith, I.Wiedenhover, J.Zhang

Shape coexistence and band crossings in 174Pt

NUCLEAR REACTIONS 92Mo(84Sr, 2p), E=380 MeV; 94Mo(84Sr, 2n2p), E=385 MeV; measured Eγ, Iγ, γγ-, (recoil)γ-coin. 174Pt deduced high-spin levels, J, π, configurations, shape coexistence features. Gammasphere, fragment separator, cranked mean-field calculations.

RADIOACTIVITY 174Pt(α) [from 92,94Mo(84Sr, xnyp)]; measured Eα.

doi: 10.1103/PhysRevC.70.014309
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2004MU16      Phys.Rev. C 69, 064315 (2004)

W.F.Mueller, W.Reviol, M.P.Carpenter, R.V.F.Janssens, F.G.Kondev, K.Abu Saleem, I.Ahmad, H.Amro, C.R.Bingham, J.Caggiano, C.N.Davids, D.Hartley, A.Heinz, B.Herskind, D.Jenkins, T.L.Khoo, T.Lauritsen, W.C.Ma, J.Ressler, L.L.Riedinger, D.G.Sarantites, D.Seweryniak, S.Siem, A.A.Sonzogni, J.Uusitalo, P.G.Varmette, I.Wiedenhover, R.Wadsworth

High-spin states in 179Au: Spectroscopy of shape-driving orbitals beyond the neutron midshell

NUCLEAR REACTIONS 104Ru(78Kr, 2np), E=340 MeV; 90Zr(90Zr, p), E=369, 380 MeV; measured Eγ, Iγ, γγ-, (recoil)γ-coin. 179Au deduced high-spin levels, J, π, configurations. Level systematics in neighboring isotopes compared. Gammasphere array, mass separator, recoil-decay tagging.

doi: 10.1103/PhysRevC.69.064315
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2004RA27      Nucl.Phys. A746, 83c (2004)

D.C.Radford, C.Baktash, J.R.Beene, B.Fuentes, A.Galindo-Uribarri, J.Gomez del Campo, C.J.Gross, M.L.Halbert, Y.Larochelle, T.A.Lewis, J.F.Liang, J.Mas, P.E.Mueller, E.Padilla, D.Shapira, D.W.Stracener, R.L.Varner, C.-H.Yu, C.J.Barton, M.A.Caprio, D.J.Hartley, N.V.Zamfir

Nuclear structure studies with heavy neutron-rich RIBS at the HRIBF

NUCLEAR REACTIONS C(126Sn, 126Sn'), (128Sn, 128Sn'), (130Sn, 130Sn'), (132Sn, 132Sn'), (134Sn, 134Sn'), (132Te, 132Te'), (134Te, 134Te'), (136Te, 136Te'), E < 3 MeV/nucleon; measured Eγ, Iγ, (recoil)γ-coin following projectile Coulomb excitation. 126,128,130,132,134Sn, 132,134,136Te deduced excitation B(E2). 9Be(134Te, 8Be), 13C(134Te, 12C), E ≈ 4 MeV/nucleon; measured Eγ, Iγ, (particle)γ-coin.

doi: 10.1016/j.nuclphysa.2004.09.056
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2004SC41      Phys.Rev. C 70, 054314 (2004)

D.T.Scholes, D.M.Cullen, F.G.Kondev, R.V.F.Janssens, M.P.Carpenter, D.J.Hartley, M.K.Djongolov, G.Sletten, G.Hagemann, C.Wheldon, P.M.Walker, K.Abu Saleem, I.Ahmad, D.L.Balabanski, P.Chowdhury, M.Danchev, G.D.Dracoulis, H.M.El-Masri, J.Goon, A.Heinz, R.A.Kaye, T.L.Khoo, T.Lauritsen, C.J.Lister, E.F.Moore, L.L.Riedinger, M.A.Riley, D.Seweryniak, I.Shestakova, I.Wiedenhover, O.Zeidan, J.-ye.Zhang

Highly deformed Bands in 175Hf

NUCLEAR REACTIONS 130Te(48Ca, 3n), E=194 MeV; measured Eγ, Iγ, γγ-coin. 175Hf deduced high-spin levels, J, π, highly deformed bands. Gammasphere array, cranked mean field calculations.

doi: 10.1103/PhysRevC.70.054314
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2003DA06      Phys.Rev. C 67, 014312 (2003)

M.Danchev, D.J.Hartley, F.G.Kondev, M.P.Carpenter, R.V.F.Janssens, L.L.Riedinger, K.H.Abu Saleem, I.Ahmad, H.Amro, D.L.Balabanski, J.A.Cizewski, C.N.Davids, A.Heinz, T.L.Khoo, T.Lauritsen, C.J.Lister, W.C.Ma, G.L.Poli, J.Ressler, W.Reviol, M.B.Smith, D.Seweryniak, I.Wiedenhover

In-beam γ-ray spectroscopy of 172Pt

NUCLEAR REACTIONS 92Mo(84Sr, 2n2p), E=390, 395 MeV; measured Eγ, Iγ, γγ-, (recoil)γ-coin. 172Pt deduced levels, possible J, π, configurations. Gammasphere array, recoil-decay tagging, level systematics in neighboring nuclides discussed.

doi: 10.1103/PhysRevC.67.014312
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2003DA34      Phys.Rev. C 68, 054307 (2003)

M.Danchev, D.L.Balabanski, I.Yigitoglu, B.Akkus, C.W.Beausang, M.Bostan, R.F.Casten, M.K.Djongolov, M.N.Erduran, S.Erturk, K.A.Gladnishki, G.Gurdal, J.TM.Goon, D.J.Hartley, A.A.Hecht, R.Krucken, J.R.Novak, Y.Oktem, G.Rainovski, L.L.Riedinger, N.V.Zamfir, O.Zeidan

Delayed backbending in the πh9/2 band of 187Ir

NUCLEAR REACTIONS 176Yb(15N, 4n), E=82 MeV; measured Eγ, Iγ, γγ-coin. 187Ir deduced high-spin levels, J, π, configurations. Rotational band systematics in neighboring nuclides discussed.

doi: 10.1103/PhysRevC.68.054307
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2003DJ01      Phys.Lett. B 560, 24 (2003)

M.K.Djongolov, D.J.Hartley, L.L.Riedinger, F.G.Kondev, R.V.F.Janssens, K.Abu Saleem, I.Ahmad, D.L.Balabanski, M.P.Carpenter, P.Chowdhury, D.M.Cullen, M.Danchev, G.D.Dracoulis, H.El-Masri, J.Goon, A.Heinz, R.A.Kaye, T.L.Khoo, T.Lauritsen, C.J.Lister, E.F.Moore, M.A.Riley, D.Seweryniak, I.Shestakova, G.Sletten, P.M.Walker, C.Wheldon, I.Wiedenhover, O.Zeidan, J.-Y.Zhang

Extending the region of triaxial superdeformation: candidate TSD bands in 174Hf

NUCLEAR REACTIONS 130Te(48Ca, 4n), E=194 MeV; measured Eγ, Iγ, γγ-coin. 174Hf deduced triaxial superdeformed bands. Gammasphere array, cranked mean-field calculations, comparisons with neighboring nuclides.

doi: 10.1016/S0370-2693(03)00328-9
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2003HE25      Phys.Rev. C 68, 054310 (2003)

A.A.Hecht, C.W.Beausang, H.Amro, C.J.Barton, Z.Berant, M.A.Caprio, R.F.Casten, J.R.Cooper, D.J.Hartley, R.Krucken, D.A.Meyer, H.Newman, J.R.Novak, N.Pietralla, J.J.Ressler, A.Wolf, N.V.Zamfir, J.-Y.Zhang, K.E.Zyromski

Evidence for chiral symmetry breaking in 140Eu?

NUCLEAR REACTIONS 92Mo(51V, n2p), E=205 MeV; measured Eγ, Iγ, γγ-, (X-ray)γ-coin. 140Eu deduced high-spin levels, J, π, configurations, B(M1)/B(E2), possible chiral symmetry breaking. Cranked mean field and total Routhian surface calculations. Rotational band systematics in neighboring nuclides discussed.

doi: 10.1103/PhysRevC.68.054310
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2003KR22      Acta Phys.Pol. B34, 2315 (2003)

W.Krolas, R.Grzywacz, K.P.Rykaczewski, J.C.Batchelder, C.R.Bingham, C.J.Gross, D.Fong, J.H.Hamilton, D.J.Hartley, J.K.Hwang, Y.Larochelle, T.A.Lewis, K.H.Maier, J.W.McConnell, A.Piechaczek, A.V.Ramayya, K.Rykaczewski, D.Shapira, M.N.Tantawy, J.A.Winger, C.-H.Yu, E.F.Zganjar, A.T.Kruppa, W.Nazarewicz, T.Vertse

First observation of excited states in 140Dy

NUCLEAR REACTIONS 92Mo(54Fe, 4n2p), E=315 MeV; measured Eγ, Iγ, γγ-, (recoil)γ-coin; deduced σ. 140Dy deduced levels, J, π, isomer T1/2. Level systematics in neighboring nuclides discussed.


2003PA41      Phys.Rev. C 68, 044323 (2003)

H.I.Park, D.J.Hartley, L.L.Riedinger, W.Reviol, O.Zeidan, J.-Y.Zhang, A.Galindo-Uribarri, R.V.F.Janssens M.P.Carpenter, D.Seweryniak, D.G.Sarantites, M.Devlin, B.G.Dong, I.Ragnarsson

Rotational structures near 40(h-bar) in 123La

NUCLEAR REACTIONS 92Mo(40Ca, p2α), E=184 MeV; measured Eγ, Iγ, γγ-, (charged particle)γ-coin. 123La deduced high-spin levels, J, π, configurations. Gammasphere, Microball arrays. Cranked mean-field calculations.

doi: 10.1103/PhysRevC.68.044323
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2003SM01      Phys.Lett. 551B, 262 (2003)

M.B.Smith, J.A.Cizewski, M.P.Carpenter, F.G.Kondev, T.L.Khoo, T.Lauritsen, R.V.F.Janssens, K.Abu Saleem, I.Ahmad, H.Amro, M.Danchev, C.N.Davids, D.J.Hartley, A.Heinz, C.J.Lister, W.C.Ma, G.L.Poli, J.Ressler, W.Reviol, L.L.Riedinger, D.Seweryniak, I.Wiedenhover

Limits of the energy-spin space beyond the proton drip line: entry distributions of Pt and Au isobars

NUCLEAR REACTIONS 92,94,96Mo(84Sr, xnyp)173mAu/175Au/172Pt/173Pt/174Pt/175Pt/176Pt, E=380-390 MeV; measured Eγ, Iγ, (recoil)γ-coin, γ multiplicity and sum energy; deduced compound nuclei energy-spin entry distributions. Gammasphere, mass separator, recoil-decay tagging.

doi: 10.1016/S0370-2693(02)03051-4
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2002BR52      Phys.Rev. C 66, 064320 (2002)

T.B.Brown, M.A.Riley, D.Campbell, D.J.Hartley, F.G.Kondev, J.Pfohl, R.V.F.Janssens, S.M.Fischer, D.Nisius, P.Fallon, W.C.Ma, J.Simpson, J.F.Sharpey-Schafer

Rotational band structures in N=89 153Gd

NUCLEAR REACTIONS 152Sm(α, 3n), E=37 MeV; 124Sn(36S, 3nα), E=165 MeV; measured Eγ, Iγ, γγ-coin. 153Gd deduced high-spin levels, J, π, configurations. 157Er; analyzed data; deduced levels J, π based on systematics. Gammasphere array.

doi: 10.1103/PhysRevC.66.064320
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2002HA20      Phys.Rev. C65, 044329 (2002)

D.J.Hartley, L.L.Riedinger, M.Danchev, W.Reviol, O.Zeidan, J.-Y.Zhang, A.Galindo-Uribarri, C.J.Gross, C.Baktash, M.Lipoglavsek, S.D.Paul, D.C.Radford, C.-H.Yu, D.G.Sarantites, M.Devlin, M.P.Carpenter, R.V.F.Janssens, D.Seweryniak, E.Padilla

Toward Complete Spectroscopy of 128Pr and Rotational Structures in 126Pr

NUCLEAR REACTIONS 92Mo(40Ca, n3p), (40Ca, npα), E=170, 184 MeV; measured Eγ, Iγ, γγ-, (charged particle)γ-, (recoil)γ-coin. 126,128Pr deduced high-spin levels, J, π, B(M1)/B(E2), configurations. Gammasphere, Microball, Clarion, Hyball arrays. Systematics of signature splitting in neighboring nuclides discussed.

doi: 10.1103/PhysRevC.65.044329
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2002KR04      Phys.Rev. C65, 031303 (2002)

W.Krolas, R.Grzywacz, K.P.Rykaczewski, J.C.Batchelder, C.R.Bingham, C.J.Gross, D.Fong, J.H.Hamilton, D.J.Hartley, J.K.Hwang, Y.Larochelle, T.A.Lewis, K.H.Maier, J.W.McConnell, A.Piechaczek, A.V.Ramayya, K.Rykaczewski, D.Shapira, M.N.Tantawy, J.A.Winger, C.-H.Yu, E.F.Zganjar, A.T.Kruppa, W.Nazarewicz, T.Vertse

First Observation of the Drip Line Nucleus 140Dy: Identification of a 7 μs K Isomer Populating the Ground State Band

NUCLEAR REACTIONS 92Mo(54Fe, 2nα), E=315 MeV; measured delayed Eγ, Iγ, γγ-, (X-ray)γ-, (recoil)γ-coin. 140Dy deduced isomer J, π, T1/2, configuration. Mass separator, comparisons with model predictions. Level systematics in neighboring nuclides discussed.

RADIOACTIVITY 141Ho(p); calculated proton decay branching ratios, fine structure features.

doi: 10.1103/PhysRevC.65.031303
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2002LA09      Phys.Rev.Lett. 88, 152501 (2002)

R.W.Laird, F.G.Kondev, M.A.Riley, D.E.Archer, T.B.Brown, R.M.Clark, M.Devlin, P.Fallon, D.J.Hartley, I.M.Hibbert, D.T.Joss, D.R.LaFosse, P.J.Nolan, N.J.O'Brien, E.S.Paul, J.Pfohl, D.G.Sarantites, R.K.Sheline, S.L.Shepherd, J.Simpson, R.Wadsworth, M.T.Matev, A.V.Afanasjev, J.Dobaczewski, G.A.Lalazissis, W.Nazarewicz, W.Satula

Quadrupole Moments of Highly Deformed Structures in the A ∼ 135 Region: Probing the single-particle motion in a rotating potential

NUCLEAR REACTIONS 105Pd(35Cl, xnypzα), E=173 MeV; measured Eγ, Iγ, γγ-, (charged particle)γ-coin, DSA. 130,131,132Pr, 133,135Nd, 133,134,136Pm, 135,137Sm deduced rotational bands transition quadrupole moments, additivity of single-particle moments. Cranked Skyrme-Hartree-Fock and cranked relativistic mean field calculations. Gammasphere, Microball arrays.

doi: 10.1103/PhysRevLett.88.152501
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