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NSR database version of April 11, 2024.

Search: Author = D.J.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 T_1/2, 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

νi_13/2 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, νi_13/2 bands, with the two signature partners, alignments and signature splitting. Discussed systematics of νi_13/2 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, 161}Gd

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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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,158,160,160m}Pm, ^{158,160,160m,162,162m,164}Eu, ^{162,162m,164,164m,166}Tb; 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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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 ^{156,157,158,159,160,161,162,163,164,165,166,168,170}Er, ^{158,159,160,161,162,163,164,165,166,167,168,169,170,171,172}Yb, ^{160,161,162,163,164,165,166,167,168,169,170,171,172,173,174}Hf, ^{164,165,166,167,168,169,170,171,172,173,174,175,176,177}W; calculated band-crossing frequencies of the first (AB) and the second (BC) i_13/2 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, T_1/2, 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 T_1/2, 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, 162}Eu 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, T_1/2.

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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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 g_9/2 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 πh_11/2νi_13/2 bands in ^{166,168,170,172,174}Re. Systematics of signature splitting for πh_11/2νi_13/2 bands in ^{166,168,170,172,174}Re, ^{164,166,168,170,172}Ta, ^{162,164,166,168,170}Lu.

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. ^{38,39,40,41,42,43}S; deduced levels, J, π, estimated half-life of 6+ state in ³⁸S; calculated shell model (SDPF-MU) neutron p_3/2 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 T_1/2, 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, ^{154,156,160,162,164}Dy, ^{156,160,164,170}Er, 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 ^{218,219,220,221,222}Ra, ^{219,220,221,222,223,224}Th.

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, 170}Re: 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, ^{166,168,170,172}Ta, ^170,172,174Re, ¹⁷⁶Ir; calculated residual interactions. ^{163,165,167,169,171}Lu, ^{165,167,169,171,173}Ta, ^{169,171,173,175}Re, ^173,175,177Ir; calculated relative levels of πi_13/2, πh_9/2, πh_11/2 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 i_13/2 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 ^{161,163,165,167}Lu, 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, 172}Hf

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, ^{168,171,172,173,174,175}Hf. 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, ^{155,157,159,161,163,165}Ho.

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, (g_K-g_R)/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 ¹¹⁶Ag^{m1, 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 ^{110,112,114,116,118,120}Cd.

doi: 10.1103/PhysRevC.80.054318
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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, 160}Er: 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, 207}Fr

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. ^{202,204,206,208,210,212,214,216,218,220,222}Rn; ^{205,207,209,211,213,215,217,219,221,223}Fr, ^{206,208,210,212,214,216,218,220,222,224}Fr; energy systematics. ²⁰⁵Rn, ^{198,199,200,201,202}Bi, ^{197,198,199,200,201}Pb; 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. ^{163,164,165,167}Lu, ^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, 161}Tm

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, 193}Au 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, 172}Hf 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, ^{170,173,174,175}Hf; 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, 158}Er and strongly deformed structures in ^{173, 174, 175}Hf

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, T_1/2. ^146,146mTm(p) [from ⁹²Mo(⁵⁸Ni, 3np)]; measured Ep, T_1/2. 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 T_1/2. 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, T_1/2, 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, 159}Dy 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. ^{126,128,130,132,134}Sn, ^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), T_1/2. 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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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. ^{126,128,130,132,134}Sn, ^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 πh_9/2 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 T_1/2. 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, T_1/2, 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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2002RA21      Phys.Rev.Lett. 88, 222501 (2002)

D.C.Radford, C.Baktash, J.R.Beene, B.Fuentes, A.Galindo-Uribarri, C.J.Gross, P.A.Hausladen, T.A.Lewis, P.E.Mueller, E.Padilla, D.Shapira, D.W.Stracener, C.-H.Yu, C.J.Barton, M.A.Caprio, L.Coraggio, A.Covello, A.Gargano, D.J.Hartley, N.V.Zamfir

Coulomb Excitation of Radioactive ^{132, 134, 136}Te Beams and the Low B(E2) of ¹³⁶Te

NUCLEAR REACTIONS C(¹³²Te, ¹³²Te'), E=350, 396 MeV; C(¹³⁴Te, ¹³⁴Te'), (¹³⁶Te, ¹³⁶Te'), E=396 MeV; measured Eγ, Iγ, (particle)γ-coin following projectile Coulomb excitation. ^{128,132,134,136}Te, ¹³⁶Ba; deduced transitions B(E2). Comparison with neighboring nuclides, shell model predictions.

doi: 10.1103/PhysRevLett.88.222501
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2002RA46      Eur.Phys.J. A 15, 171 (2002)

D.C.Radford, C.Baktash, A.Galindo-Uribarri, C.J.Gross, T.A.Lewis, P.E.Mueller, P.A.Hausladen, D.Shapira, D.W.Stracener, C.H.Yu, B.Fuentes, E.Padilla, D.J.Hartley, C.J.Barton, M.Caprio, N.V.Zamfir

Physics with heavy neutron-rich RIBs at the HRIBF

NUCLEAR REACTIONS C(¹²⁶Te, ¹²⁶Te'), (¹²⁶Sn, ¹²⁶Sn'), (¹²⁸Te, ¹²⁸Te'), (¹²⁸Sn, ¹²⁸Sn'), (¹³²Te, ¹³²Te'), (¹³⁴Ba, ¹³⁴Ba'), (¹³⁴Te, ¹³⁴Te'), (¹³⁶Te, ¹³⁶Te'), (¹³⁶Ba, ¹³⁶Ba'), E ≈ 3 MeV/nucleon; measured Eγ, Iγ, (particle)γ-coin following projectile Coulomb excitation. ^{126,128,132,134,136}Te, ^126,128Sn, ^134,136Ba deduced transitions B(E2). ⁹Be(¹³⁴Te, αX)¹³⁵Te, E ≈ 4 MeV/nucleon; measured Eγ, Iγ, αγ-, αα-coin. ¹³⁵Te deduced levels, J, π.

doi: 10.1140/epja/i2001-10248-2
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2002SH09      Phys.Rev. C65, 034320 (2002)

S.L.Shepherd, J.Simpson, A.Dewald, P.Petkov, P.J.Nolan, M.A.Riley, A.J.Boston, T.B.Brown, R.M.Clark, P.Fallon, D.J.Hartley, S.Kasemann, R.Krucken, P.von Brentano, R.W.Laird, E.S.Paul, R.Peusquens

High Precision Quadrupole Moment Measurements of States up to I = 20(h-bar) in the Yrast Band of ¹⁵⁸Er

NUCLEAR REACTIONS ¹²²Sn(⁴⁰Ar, 4n), E=185 MeV; measured Doppler-shifted Eγ, Iγ, γγ-coin. ¹⁵⁸Er levels deduced T_1/2, B(E2), transition quadrupole moments. Gammasphere array, recoil-distance technique.

doi: 10.1103/PhysRevC.65.034320
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2002ST06      Phys.Rev. C65, 034323 (2002)

E.A.Stefanova, M.Danchev, R.Schwengner, D.L.Balabanski, M.P.Carpenter, M.Djongolov, S.M.Fischer, D.J.Hartley, R.V.F.Janssens, W.F.Mueller, D.Nisius, W.Reviol, L.L.Riedinger, O.Zeidan

Structure of High-Spin States in ⁹¹Sr and ⁹²Sr

NUCLEAR REACTIONS ¹⁵⁹Tb(³⁶S, X)⁹¹Sr/⁹²Sr, E=165 MeV; measured Eγ, Iγ, γγ-coin. ^91,92Sr deduced high-spin levels, J, π, configurations. Gammasphere array, comparison with shell-model results.

doi: 10.1103/PhysRevC.65.034323
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2002ZE01      Phys.Rev. C65, 024303 (2002)

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

Rotational Structures in ¹²⁹Nd and Signature Splitting Systematics of the νh_11/2 Bands in A ∼ 130 Nuclei

NUCLEAR REACTIONS ⁹²Mo(⁴⁰Ca, n2p), E=170, 184 MeV; measured Eγ, Iγ, γγ-, (charged particle)γ-, (recoil)γ-coin. ¹²⁹Nd deduced high-spin levels, J, π, B(M1)/B(E2), configurations. Level systematics in neighboring nuclides discussed. Gammasphere, Microball, Clarion, HyBall arrays, mass separator.

doi: 10.1103/PhysRevC.65.024303
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