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NSR database version of April 11, 2024.

Search: Author = I.Ragnarsson

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2024KA12      Phys.Rev. C 109, 034320 (2024)

A.Kardan, P.M.Walker, I.Ragnarsson

Isomeric states in neutron-rich Z=76 isotopes and N=116 isotones

doi: 10.1103/PhysRevC.109.034320
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2023CO04      Phys.Rev. C 107, L021301 (2023)

D.M.Cox, A.Saamark-Roth, D.Rudolph, L.G.Sarmiento, R.M.Clark, J.L.Egido, P.Golubev, J.Heery, A.Yakushev, S.AAberg, H.M.Albers, M.Albertsson, M.Block, H.Brand, T.Calverley, R.Cantemir, B.G.Carlsson, Ch.E.Dullmann, J.Eberth, C.Fahlander, U.Forsberg, J.M.Gates, F.Giacoppo, M.Gotz, S.Gotz, R.-D.Herzberg, Y.Hrabar, E.Jager, D.Judson, J.Khuyagbaatar, B.Kindler, I.Kojouharov, J.V.Kratz, J.Krier, N.Kurz, L.Lens, J.Ljungberg, B.Lommel, J.Louko, C.-C.Meyer, A.Mistry, C.Mokry, P.Papadakis, E.Parr, J.L.Pore, I.Ragnarsson, J.Runke, M.Schadel, H.Schaffner, B.Schausten, D.A.Shaughnessy, P.Thorle-Pospiech, N.Trautmann, J.Uusitalo

Spectroscopy along flerovium decay chains. II. Fine structure in odd-A 289Fl

RADIOACTIVITY 289Fl(α) [from 244Pu(48Ca, X), E=6.02 MeV/nucleon]; 285Cn(α) [from 289Fl(α)]; 281Ds(α) [from 285Cn(α)]; 277Hs(SF) [from 281Ds(α)]; measured decay products, Eα, Iα, Eβ, Iβ αβ-coin, αα-coin, (fragment)αα-coin; deduced Q-values, T1/2, branching ratios, hindrance factor. 289Fl, 285Cn, 281Ds; deduced J, π and δ assignments based on the derived decay path. Comparison with structure calculations based on the symmetry-conserving configuration mixing theory. Gas-filled recoil separator TASCA was used to transmit, select, and focus the flerovium ions into an upgraded version of the TASISpec decay station consisting of implantation DSSD, veto DSSD and set of HPGe detectors (GSI).

doi: 10.1103/PhysRevC.107.L021301
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2023KA10      Phys.Rev. C 107, 044306 (2023)

A.Kardan, B.G.Carlsson, T.Dossing, I.Ragnarsson

High-spin rotational bands in 137Nd

NUCLEAR STRUCTURE 137Nd; calculated energies of low-lying CNS configurations in 137Nd for five groups: triaxial bands, near-oblate bands, HD bands, terminating bands, and superdeformed (SD) bands as function of spin, single-proton and single-neutron energies as a function of rotational frequency (Routhians), energies of levels in 137Nd relative to a rotating liquid drop reference for the observed bands above of spin ≈ 15, level densities as functions of spin and level energies using unpaired cranked Nilsson-Strutinsky (CNS) and cranked Nilsson-Strutinsky-Bogoliubov methods; analyzed in detail experimentally observed high-spin and highly deformed (HD) prolate rotational bands in 137Nd by 2019Pe08 (Phys. Rev. C 99, 041301 (2019)).

doi: 10.1103/PhysRevC.107.044306
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2023SA03      Phys.Rev. C 107, 024301 (2023)

A.Saamark-Roth, D.M.Cox, D.Rudolph, L.G.Sarmiento, M.Albertsson, B.G.Carlsson, J.L.Egido, P.Golubev, J.Heery, A.Yakushev, S.AAberg, H.M.Albers, M.Block, H.Brand, T.Calverley, R.Cantemir, R.M.Clark, Ch.E.Dullmann, J.Eberth, C.Fahlander, U.Forsberg, J.M.Gates, F.Giacoppo, M.Gotz, S.Gotz, R.-D.Herzberg, Y.Hrabar, E.Jager, D.Judson, J.Khuyagbaatar, B.Kindler, I.Kojouharov, J.V.Kratz, J.Krier, N.Kurz, L.Lens, J.Ljungberg, B.Lommel, J.Louko, C.-C.Meyer, A.Mistry, C.Mokry, P.Papadakis, E.Parr, J.L.Pore, I.Ragnarsson, J.Runke, M.Schadel, H.Schaffner, B.Schausten, D.A.Shaughnessy, P.Thorle-Pospiech, N.Trautmann, J.Uusitalo

Spectroscopy along flerovium decay chains. III. Details on experiment, analysis, 282Cn, and spontaneous fission branches

RADIOACTIVITY 290,288,286,284Fl(α)(SF) [from 244Pu(48Ca, X), E=6.02 MeV/nucleon]; 282Cn(α)(SF) [286Fl(α)]; 284Cn(α)(SF) [from 288Fl(α)]; 286Cn(α)(SF) [290Fl(α)]; 282Ds(α)(SF) [from 286Cn(α)]; 280Ds(α)(SF) [from 284Cn(α)]; measured decay products, Eα, Iα, Eβ, Iβ αβ-coin, αα-coin, (fragment)αα-coin; deduced Q-values, T1/2, branching ratios, hindrance factor. 282Cn; deduced levels, J, π, T1/2 of excited states, transition rates, monopole transition strengths. Comparison to macroscopic-microscopic finite-range liquid-drop model, self-consistent Hartree-Fock-Bogoliubov calculations and other experimental data. Gas-filled recoil separator TASCA was used to transmit, select, and focus the flerovium ions into an upgraded version of the TASISpec decay station consisting of implantation DSSD, veto DSSD and set of HPGe detectors (GSI).

doi: 10.1103/PhysRevC.107.024301
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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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2022LJ01      Phys.Rev. C 106, 014314 (2022)

J.Ljungberg, B.G.Carlsson, J.Rotureau, A.Idini, I.Ragnarsson

Nuclear spectra from low-energy interactions

NUCLEAR STRUCTURE 24Mg, 48,49,50,52Cr; calculated levels, J, π, B(E2), Q2, HFB energy versus deformation for with SLy4-H Hamiltonian, Hartree-Fock binding energies versus deformation for 48Cr. Generator-coordinate method using effective Hamiltonian that reproduces stiffness associated with collective modes, and a mapping from a density functional to the corresponding Hamiltonian, with Skyrme-based energy-density functional (EDF). Comparison with experimental data.

doi: 10.1103/PhysRevC.106.014314
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2021BA03      Phys.Rev. C 103, 014301 (2021)

A.Basu, A.K.Singh, I.Ragnarsson, B.G.Carlsson, A.Kardan, G.B.Hagemann, G.Sletten, B.Herskind, H.Hubel, S.Chmel, A.N.Wilson, J.Rogers, R.V.F.Janssens, M.P.Carpenter, T.L.Khoo, F.G.Kondev, T.Lauritsen, S.Zhu, A.Korichi, P.Fallon, B.M.Nyako, J.Timar

Highly deformed band structures due to core excitations in 123Xe

NUCLEAR REACTIONS 80Se(48Ca, 5n)123Xe, E=207 MeV; measured Eγ, Iγ, two to four-fold γγ-coin, angular-distribution ratios for eight transitions using the Gammasphere array at ATLAS-ANL facility. 123Xe; deduced high-spin levels, J, π, multipolarities, highly-deformed rotational bands, alignments, band crossings, configurations; calculated total energy surfaces. Comparison with cranked Nilsson-Strutinsky (CNS) and cranked Nilsson-Strutinsky-Bogoliubov (CNSB) models.

doi: 10.1103/PhysRevC.103.014301
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2021RU07      Phys.Rev. C 103, 034306 (2021)

D.Rudolph, I.Ragnarsson, R.M.Clark, C.Andreoiu, M.P.Carpenter, J.Ekman, C.Fahlander, F.G.Kondev, T.Lauritsen, D.G.Sarantites, D.Seweryniak, C.E.Svensson

Low-, medium-, and high-spin states in the N=Z + 1 nucleus 63Ga

NUCLEAR REACTIONS 40Ca(28Si, pα)63Ga, E=122 MeV; measured Eγ, Iγ, γγ-, and (particle)γ-coin, γγ(θ)(DCO) using Gammasphere and Microball arrays at ATLAS-ANL facility. 63Ga; deduced high-spin levels, J, π, multipolarities, rotational bands, configurations, alignments. Comparison with shell-model calculations for low-spin levels, and cranked Nilsson-Strutinsky calculations for high-spin bands.

NUCLEAR STRUCTURE 63Ga; calculated levels, J, π, rotational bands, level half-lives, magnetic dipole and electric quadrupole moments, γ-branching ratios, γ-mixing ratios, configurations. Shell-model calculations, with JUN45, FPD6, KB3G and GXPF1A interactions using ANTOINE code. Comparison with experimental data.

doi: 10.1103/PhysRevC.103.034306
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2021SA01      Phys.Rev.Lett. 126, 032503 (2021)

A.Samark-Roth, D.M.Cox, D.Rudolph, L.G.Sarmiento, B.G.Carlsson, J.L.Egido, P.Golubev, J.Heery, A.Yakushev, S.Aberg, H.M.Albers, M.Albertsson, M.Block, H.Brand, T.Calverley, R.Cantemir, R.M.Clark, C.E.Dullmann, J.Eberth, C.Fahlander, U.Forsberg, J.M.Gates, F.Giacoppo, M.Gotz, S.Gotz, R.-D.Herzberg, Y.Hrabar, E.Jager, D.Judson, J.Khuyagbaatar, B.Kindler, I.Kojouharov, J.V.Kratz, J.Krier, N.Kurz, L.Lens, J.Ljungberg, B.Lommel, J.Louko, C.-C.Meyer, A.Mistry, C.Mokry, P.Papadakis, E.Parr, J.L.Pore, I.Ragnarsson, J.Runke, M.Schadel, H.Schaffner, B.Schausten, D.A.Shaughnessy, P.Thorle-Pospiech, N.Trautmann, J.Uusitalo

Spectroscopy along Flerovium Decay Chains: Discovery of 280Ds and an Excited State in 282Cn

RADIOACTIVITY 286,288Fl, 284Cn(α), 282Cn, 280Ds(SF) [from 242,244Pu(48Ca, X)286Fl/288Fl, E=6.021 MeV/nucleon]; measured decay products, Eα, Iα, Eβ, Iβ α-β coin.; deduced Q-values, T1/2, J, π. Comparison with theoretical calculations. The gas-filled separator TASCA at the GSI.

doi: 10.1103/PhysRevLett.126.032503
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2021SI05      Phys.Rev. C 103, 024325 (2021)

M.A.Sithole, J.F.Sharpey-Schafer, E.A.Lawrie, S.N.T.Majola, A.Kardan, T.D.Bucher, J.J.Lawrie, L.Mdletshe, S.S.Ntshangase, A.A.Netshiya, P.Jones, L.Makhathini, K.L.Malatji, P.L.Masiteng, I.Ragnarsson, B.Maqabuka, J.Ndayishimye, O.Shirinda, B.R.Zikhali, S.Jongile, G.O'Neill, L.Msebi, P.M.Someketa, D.Kenfack, S.H.Mthembu, T.C.Khumalo, M.V.Chisapi

Low- and medium-spin negative-parity bands in the 187Os nucleus

NUCLEAR REACTIONS 186W(α, 3n)187Os, E=37 MeV; measured Eγ, Iγ, γγ-coin, γγ(θ)(ADO), γγ(linear polarization) using AFRODITE array of 11 Compton-suppressed HPGe clover detectors at the K=200 cyclotron facility of iThemba Labs. 187Os; deduced high-spin levels, J, π, multipolarities, bands, alignment plots, experimental Routhians, Nilsson configurations; calculated total energy surfaces contours in (ϵ2cos(γ+30°), ϵ2sin(γ+30°)) plane using the cranked Nilsson-Strutinsky-Bogoliubov (CNSB) models. Bands interpreted within the cranked shell model (CSM) and CNSB formalism.

doi: 10.1103/PhysRevC.103.024325
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2020BA12      Phys.Rev. C 101, 024309 (2020)

A.Basu, A.K.Singh, S.Nag, G.B.Hagemann, G.Sletten, B.Herskind, A.N.Wilson, J.Rogers, I.Ragnarsson, H.Hubel, S.Chmel, R.V.F.Janssens, M.P.Carpenter, T.L.Khoo, F.G.Kondev, T.Lauritsen, S.Zhu, A.Korichi, P.Fallon, B.M.Nyako, J.Timar

Evolution of collective and noncollective structures in 123Xe

NUCLEAR REACTIONS 80Se(48Ca, 5n)123Xe, E=207 MeV; measured Eγ, Iγ, γγ-coin, γ-ray angular distribution ratios using Gammasphere array at ATLAS-ANL facility. 123Xe; deduced high-spin levels, J, π, multipolarities, rotational bands, configurations, alignments, B(E1), B(E1)/B(E2); calculated total-energy surfaces in (ϵ2, γ) plane. Comparison with cranked Nilsson-Strutinsky (CNS) calculations.

doi: 10.1103/PhysRevC.101.024309
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2020KA05      Phys.Rev. C 101, 014323 (2020)

A.Kardan, I.Ragnarsson, B.G.Carlsson, H.-L.Ma

Interpretation of normal-deformed bands in 167Lu

NUCLEAR STRUCTURE 167Lu; calculated single-routhian orbitals at an average deformation for the normal-deformed bands, energies of unpaired and paired yrast and other bands of positive and negative configurations, spin versus Eγ distributions, average pairing energies relative to a rotating liquid drop, deformation trajectories, transition quadrupole moments, total energy surfaces in the (ϵ2, γ) plane. Observed normal-deformed rotational structures in 167Lu interpreted using unpaired and paired cranked Nilsson-Strutinsky (CNS) formalisms, cranked Nilsson-Strutinsky, and cranked Nilsson-Strutinsky-Bogoliubov (CNSB) calculations. Comparison with experimental data.

doi: 10.1103/PhysRevC.101.014323
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2020RU03      Phys.Rev. C 102, 014313 (2020)

D.Rudolph, I.Ragnarsson, S.AAberg, C.Andreoiu, M.P.Carpenter, R.M.Clark, J.Ekman, C.Fahlander, R.V.F.Janssens, F.G.Kondev, T.Lauritsen, D.G.Sarantites, D.Seweryniak, C.E.Svensson

Onset of high-spin rotational bands in the N=Z nucleus 62Ga

NUCLEAR REACTIONS 40Ca(28Si, npα), E=122 MeV; measured Eγ, Iγ, (particle)γ- and γγ-coin, γγ(θ)(DCO) using the Gammasphere array and the 4π Microball system for charged particle detection at the ANL-ATLAS facility. 62Ga; deduced high-spin levels, J, π, multipolarities, band structures, alignments, and configurations; calculated energy surface contours in (ϵ2, γ) plane. Comparison with cranked Nilsson-Strutinsky (CNS) calculations.

doi: 10.1103/PhysRevC.102.014313
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2020RU04      Phys.Rev. C 102, 014316 (2020)

D.Rudolph, I.Ragnarsson, C.Andreoiu, M.A.Bentley, M.P.Carpenter, R.J.Charity, R.M.Clark, J.Ekman, C.Fahlander, P.Fallon, W.Reviol, D.G.Sarantites, D.Seweryniak

Single-particle and collective excitations in the N=28 isotones 54Fe and 53Mn

NUCLEAR REACTIONS 28Si(32S, 3pα)53Mn, (32S, 2pα)54Fe, E=125 MeV; measured Eγ, Iγ, E(n), (particle)γ- and γγ-coin, γγ(θ)(DCO) using the Gammasphere array for γ detection, 4π Microball system for charged particle detection, and the Neutron Shell for neutron detection at ANL-ATLAS and LBNL facilities. 53Mn, 54Fe; deduced high-spin levels, J, π, multipolarities, band structures, alignments and configurations. Comparison with cranked Nilsson-Strutinsky calculations, and with large-scale shell model calculations in the fp shell with GXPF1A and KB3G interactions and isospin breaking terms.

doi: 10.1103/PhysRevC.102.014316
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2019BH04      Phys.Rev. C 100, 014315 (2019)

S.Bhattacharya, T.Trivedi, D.Negi, R.P.Singh, S.Muralithar, R.Palit, I.Ragnarsson, S.Nag, S.Rajbanshi, M.Kumar Raju, V.V.Parkar, G.Mohanto, S.Kumar, D.Choudhury, R.Kumar, R.K.Bhowmik, S.C.Pancholi, A.K.Jain

Evolution of collectivity and evidence of octupole correlations in 73Br

NUCLEAR REACTIONS 50Cr(28Si, pα), E=90 MeV; measured Eγ, Iγ, γγ-coin, γγ(θ)(DCO), γγ(lin pol), and level half-lives by DSAM and line-shape method using the INGA array at 15UD Pelletron accelerator of IUAC. 73Br; deduced high-spin levels, J, π, multipolarities, bands, octupole band, B(E2), B(E1), B(M1), B(E1)/B(E2) ratios, transition quadrupole moments, configurations, octupole correlations, possible band termination at higher spin; calculated low-lying configurations, total Routhian surfaces using cranked Nilsson-Strutinsky method, and compared with experimental data.

doi: 10.1103/PhysRevC.100.014315
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2019RO14      Phys.Rev. C 100, 024327 (2019)

W.Rodriguez, F.Cristancho, S.L.Tabor, A.Kardan, I.Ragnarsson, R.A.Haring-Kaye, J.Doring, D.G.Sarantites, A.Garzon

High spin states of the normally deformed bands of 83Y

NUCLEAR REACTIONS 58Ni(32S, 3pα)83Y, E=135 MeV; measured Eγ, Iγ, γγ-coin, level half-lives and side feedings by Doppler-shift attenuation method (DSAM) using Gammasphere array with 110 HPGe detectors surrounded by BGO Compton suppressors at the LBNL cyclotron facility. 83Y; deduced high-spin levels, J, π, rotational bands, B(E2), β2 deformation parameters, transition quadrupole moments, alignments; calculated total energy surfaces. Comparison with paired and unpaired cranked Nilsson-Strutinsky-Bogoliubov (CNSB), and with cranked Nilsson-Strutinsky (CNS) calculations.

doi: 10.1103/PhysRevC.100.024327
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2019SA28      Phys.Rev. C 99, 054301 (2019)

S.Saha, R.Palit, J.Sethi, S.Biswas, P.Singh, S.Nag, A.K.Singh, I.Ragnarsson, F.S.Babra, U.Garg, A.Goswami, E.Ideguchi, H.C.Jain, S.Kumar, Md.S.R.Laskar, G.Mukherjee, Z.Naik, C.S.Palshetkar

Observation of rotation about the longest principal axis in 89Zr

NUCLEAR REACTIONS 80Se(13C, 4n), E=50, 60 MeV; measured Eγ, Iγ, γγ-coin, γγ(θ)(DCO), γγ(polarization asymmetry), and level half-lives by DSAM using INGA array at TIFR accelerator facility. 89Zr; deduced high-spin levels, J, π, multipolarities, dipole band, B(M1), configuration; calculated excitation energy relative to a rotating liquid drop energy as a function of spin, and total energy surface plots using cranked Nilsson-Strutinsky model.

doi: 10.1103/PhysRevC.99.054301
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2018SA45      Phys.Rev. C 98, 044307 (2018)

A.Saamark-Roth, L.G.Sarmiento, D.Rudolph, J.Ljungberg, B.G.Carlsson, C.Fahlander, U.Forsberg, P.Golubev, I.Ragnarsson, D.Ackermann, L.-L.Andersson, M.Block, H.Brand, D.M.Cox, A.Di Nitto, Ch.E.Dullmann, K.Eberhardt, J.Even, J.M.Gates, J.Gerl, K.E.Gregorich, C.J.Gross, R.-D.Herzberg, F.P.Hessberger, E.Jager, J.Khuyagbaatar, B.Kindler, I.Kojouharov, J.V.Kratz, J.Krier, N.Kurz, B.Lommel, A.Mistry, C.Mokry, J.P.Omtvedt, P.Papadakis, J.Runke, K.Rykaczewski, M.Schadel, H.Schaffner, B.Schausten, P.Thorle-Pospiech, N.Trautmann, T.Torres, A.Turler, A.Ward, N.Wiehl, A.Yakushev

Low-lying states in 219Ra and 215Rn: Sampling microsecond α-decaying nuclei

RADIOACTIVITY 219Ra(α)[from 243Am(48Ca, X), E=242.1, 245.0 MeV]; measured Eα, Iα, Eγ, Iγ, αγ-coin, α(x ray)-coin, α-α correlations using TASISpec at the TASCA, GSI facility. Pileup analysis and GEANT4 simulation of 219Ra to 215Rn decay. 219,219m,220,221Ra, 215,216,217Rn, 212,213Po, 219Fr, 215At(α); measured half-lives, Qα. 219Ra, 215Rn; deduced levels, J, π, isomer in 219Ra Comparison with shell model calculations and theoretical calculations of deformation, rotational states and α-decay rates, and with evaluated data in the ENSDF database.

doi: 10.1103/PhysRevC.98.044307
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2018SI03      Phys.Rev. C 97, 024323 (2018)

A.K.Singh, A.Basu, S.Nag, H.Hubel, J.Domscheit, I.Ragnarsson, A.Al-Khatib, G.B.Hagemann, B.Herskind, D.R.Elema, J.N.Wilson, R.M.Clark, M.Cromaz, P.Fallon, A.Gorgen, I.-Y.Lee, D.Ward, W.C.Ma

Absence of paired crossing in the positive parity bands of 124Cs

NUCLEAR REACTIONS 64Ni(64Ni, 3np), E=265 MeV from the 88-inch cyclotron at Lawrence Berkeley National Laboratory; measured Eγ, Iγ, γγ-coin, γγ(θ) angular distribution ratios using Gammasphere array of 100 Compton-suppressed Ge detectors, enriched target. 124Cs; deduced high-spin levels, J, π, multipolarities, rotational bands, chiral partner bands, configurations, alignments, band crossings; calculated potential-energy surfaces, single-neutron routhians. Comparison with configuration-dependent cranked Nilsson-Strutinsky model calculations.

doi: 10.1103/PhysRevC.97.024323
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2018WA22      Phys.Rev. C 98, 024313 (2018)

R.Wadsworth, N.S.Kelsall, D.G.Jenkins, I.Ragnarsson, S.M.Fischer, D.P.Balamuth, P.A.Hausladen, G.C.Ball, M.P.Carpenter, R.V.F.Janssens, T.Lauritsen, C.J.Lister, D.Seweryniak, R.M.Clark, P.Fallon, A.O.Macchiavelli, C.E.Svensson, S.J.Freeman, D.G.Sarantites

Terminating states in the positive-parity structures of 67As

NUCLEAR REACTIONS 40Ca(36Ar, p2α), E=145 MeV; measured Eγ, Iγ, γγ- and (particle)γ-coin, γγ(θ)(DCO) using Gammasphere array for γ detection, and MICROBALL CsI array for charged particles at ATLAS-ANL facility. 67As; deduced levels, J, π, multipolarities, bands, and noncollective terminating states; calculated tilted Fermi-surface plots for protons and neutrons. Comparison with configuration dependent cranked Nilsson-Strutinsky calculations.

doi: 10.1103/PhysRevC.98.024313
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2017HA12      Phys.Rev. C 95, 034302 (2017)

T.W.Hagen, A.Gorgen, W.Korten, L.Grente, M.-D.Salsac, F.Farget, I.Ragnarsson, T.Braunroth, B.Bruyneel, I.Celikovic, E.Clement, G.de France, O.Delaune, A.Dewald, A.Dijon, M.Hackstein, B.Jacquot, J.Litzinger, J.Ljungvall, C.Louchart, C.Michelagnoli, D.R.Napoli, F.Recchia, W.Rother, E.Sahin, S.Siem, B.Sulignano, Ch.Theisen, J.J.Valiente-Dobon

Evolution of nuclear shapes in odd-mass yttrium and niobium isotopes from lifetime measurements following fission reactions

NUCLEAR REACTIONS 9Be(238U, F)92Y/93Y/94Y/95Y/96Y/97Y/98Y/99Y/100Y/101Y/102Y/103Y/97Nb/98Nb/99Nb/100Nb/101Nb/102Nb/103Nb/104Nb/105Nb/106Nb/107Nb/108Nb, E=6.2 MeV/nucleon; measured energy loss ΔE versus the total energy, mass versus mass-to-charge ratio, mass distributions of fission fragments, Eγ, Iγ, (fission fragment)γ-coin, level half-lives by recoil-distance Doppler-shift (RDDS) method using VAMOS++ spectrometer and EXOGAM array at GANIL facility. 99,101Y, 101,103,105,107Nb; deduced high-spin levels, J, π, rotational bands, configurations, B(M1), B(E2). Comparison with triaxial particle-rotor calculations.

doi: 10.1103/PhysRevC.95.034302
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2017LO13      Phys.Rev. C 96, 034315 (2017)

Ch.Lorenz, L.G.Sarmiento, D.Rudolph, D.E.Ward, M.Block, F.P.Hessberger, D.Ackermann, L.-L.Andersson, M.L.Cortes, C.Droese, M.Dworschak, M.Eibach, U.Forsberg, P.Golubev, R.Hoischen, I.Kojouharov, J.Khuyagbaatar, D.Nesterenko, I.Ragnarsson, H.Schaffner, L.Schweikhard, S.Stolze, J.Wenzl

Quantum-state-selective decay spectroscopy of 213Ra

RADIOACTIVITY 213Ra(α), (EC), (β+)[from 170Er(48Ca, 5n), E=4.30 MeV/nucleon using velocity filter SHIP and SHIPTRAP Penning trap at GSI UNILAC facility]; 209Rn(α), (EC), (β+)[from 213Ra α decay]; 213Fr(α), (EC), (β+)[from 213Ra EC decay]; 209At(α), (EC), (β+)[from 209Rn EC decay]; measured Eα, Iα, Eγ, Iγ, αγ-coin, (x ray)α-coin, α and EC+β+ branching ratios using TASISpec setup at GSI. GEANT4 simulations. 209Rn; deduced levels, α feedings, γ-ray branching ratios, multipolarity. Comparison with evaluated data, and Nilsson-Strutinsky and shell-model calculations. 209Rn; calculated levels, J, π using shell model with pbpop interaction, total energy surface in (ϵ2, ϵ4) plane, and compared with experimental data, and other theoretical calculations.

doi: 10.1103/PhysRevC.96.034315
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2017RA25      Phys.Scr. 92, 124004 (2017)

I.Ragnarsson

How deformed are the TSD bands in odd Lu isotopes?

NUCLEAR STRUCTURE 163,165,167Lu; analyzed available data; deduced large deformation in the triaxial strongly deformed (TSD) bands.

doi: 10.1088/1402-4896/aa9353
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2017SR01      Phys.Rev. C 95, 011303 (2017)

P.C.Srivastava, S.AAberg, I.Ragnarsson

Triaxial rotation-axis flip triggered by an isoscalar np pair

NUCLEAR STRUCTURE 64Ge, 66As; calculated total-energy surfaces in (ϵ2, γ) plane, levels, J, π of ground-state band (T=0) of 64Ge and 9+ (T=1) band in 66As, intrinsic and spectroscopic quadrupole moments, B(E2). Cranked Nilsson-Strutinsky (CNS) model. Comparison with experimental data.

doi: 10.1103/PhysRevC.95.011303
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2016AL18      Phys.Rev. C 94, 034301 (2016)

M.Albers, S.Zhu, A.D.Ayangeakaa, R.V.F.Janssens, J.Gellanki, I.Ragnarsson, M.Alcorta, T.Baugher, P.F.Bertone, M.P.Carpenter, C.J.Chiara, P.Chowdhury, H.M.David, A.N.Deacon, B.DiGiovine, A.Gade, C.R.Hoffman, F.G.Kondev, T.Lauritsen, C.J.Lister, E.A.McCutchan, C.Nair, A.M.Rogers, D.Seweryniak

Single-particle and collective excitations in 62Ni

NUCLEAR REACTIONS 26Mg(48Ca, 4n2α)62Ni, E=275, 320 MeV; measured reaction products identified by mass (A) and charge (Z), Eγ, Iγ, γ(θ), γγ-, (62Ni)γ-coin, level half-lives and transition quadrupole moments using fragment mass analyzer (FMA) and Gammasphere array at ATLAS-ANL facility. 62Ni; deduced high-spin levels, J, π, multipolarity, bands, deformation β2, alignment plots, configurations. Comparison with shell-model calculations using JUN45 and jj4b interactions, and with Nilsson-Strutinsky calculations. Comparison of alignment plots with those in 58Cr, 60Fe, 63Ni and 64Zn.

doi: 10.1103/PhysRevC.94.034301
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2016FO10      Nucl.Phys. A953, 117 (2016)

U.Forsberg, D.Rudolph, L.-L.Andersson, A.Di Nitto, Ch.E.Dullmann, C.Fahlander, J.M.Gates, P.Golubev, K.E.Gregorich, C.J.Gross, R.-D.Herzberg, F.P.Hessberger, J.Khuyagbaatar, J.V.Kratz, K.Rykaczewski, L.G.Sarmiento, M.Schadel, A.Yakushev, S.Aberg, D.Ackermann, M.Block, H.Brand, B.G.Carlsson, D.Cox, X.Derkx, J.Dobaczewski, K.Eberhardt, J.Even, J.Gerl, E.Jager, B.Kindler, J.Krier, I.Kojouharov, N.Kurz, B.Lommel, A.Mistry, C.Mokry, W.Nazarewicz, H.Nitsche, J.P.Omtvedt, P.Papadakis, I.Ragnarsson, J.Runke, H.Schaffner, B.Schausten, Y.Shi, P.Thorle-Pospiech, T.Torres, T.Traut, N.Trautmann, A.Turler, A.Ward, D.E.Ward, N.Wiehl

Recoil-α-fission and recoil-α-α- fission events observed in the reaction 48Ca + 243Am

NUCLEAR REACTIONS 243Am(48Ca, x), E=242.1, 245.0 MeV; measured reaction products, fission products, Eα, Iα(t), αα-coin, (recoil)α-coin, En, In using He-gas filled TASCA, TASISpec based on DSSSDs, other DSSSDs; deduced correlation times, α energy spectra, 23 α-decay chains of five α's and α+3n, fragments T1/2. Discussed existence of long decay chains; compared with published results.

RADIOACTIVITY 289,288Mc, 284Nh, 280Rg, 276Mt, 272Bh(α), 268Db(SF); measured decay products, Eα, Iα; deduced T1/2. Comparison with available data.

doi: 10.1016/j.nuclphysa.2016.04.025
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2016NA29      Phys.Rev. C 94, 034307 (2016)

S.Nag, A.K.Singh, G.B.Hagemann, G.Sletten, B.Herskind, T.Dossing, I.Ragnarsson, H.Hubel, A.Burger, S.Chmel, A.N.Wilson, J.Rogers, M.P.Carpenter, R.V.F.Janssens, T.L.Khoo, F.G.Kondev, T.Lauritsen, S.Zhu, A.Korichi, E.A.Stefanova, P.Fallon, B.M.Nyako, J.Timar, K.Juhasz

Observation of high-spin bands with large moments of inertia in 124Xe

NUCLEAR REACTIONS 80Se(48Ca, 4n)124Xe, E=207 MeV; measured Eγ, Iγ, γγ-coin using GAMMASPHERE array at ATLAS-ANL facility. 124Xe; deduced high-spin levels, J, π, bands, moment of inertia plots, configurations; calculated total-energy surface contours Comparison with cranked Nilsson-Strutinsky calculations. Systematics of alignment plots in 120Te, 125I, 124,125,126Xe, 124Ba, 132Ce.

doi: 10.1103/PhysRevC.94.034307
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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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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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2015PE03      Phys.Rev. C 91, 024302 (2015)

C.M.Petrache, I.Ragnarsson, H.-L.Ma, R.Leguillon, T.Zerrouki, D.Bazzacco, S.Lunardi

Multiple triaxial bands in 138Nd

NUCLEAR REACTIONS 94Zr(48Ca, 4nγ), E=188, 195 MeV; measured Eγ, Iγ, γγ-coin, γγ(θ)(DCO) using GASP array at XTU Tandem Accelerator facility of LNL-Legnaro. 138Nd; deduced high-spin levels, J, π, multipolarity, bands, multiple triaxial bands, highly-deformed band, configurations, alignments; calculated potential energy surface contours using cranked Nilsson-Strutinsky formalism.

doi: 10.1103/PhysRevC.91.024302
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2015PE10      Phys.Rev. C 92, 034314 (2015)

C.M.Petrache, I.Ragnarsson, H.Naidja, F.Nowacki, R.Leguillon, T.Zerrouki, P.T.Greenlees, U.Jakobsson, P.Jones, R.Julin, S.Juutinen, S.Ketelhut, M.Leino, M.Nyman, P.Peura, P.Rahkila, P.Ruotsalainen, J.Saren, C.Scholey, J.Sorri, J.Uusitalo

Search for the terminating 27- state in 140Nd

NUCLEAR REACTIONS 96Zr(48Ca, 4n), E=180 MeV; measured Eγ, Iγ, γγ-coin, γ(θ) using JUROGAM array and GREAT spectrometer at K-130 cyclotron facility of University of Jyvaskyla. 140Nd; deduced high-spin levels, J, π, multipolarity, configurations, fully aligned terminating state, shape coexistence. Comparison with cranked Nilsson-Strutinsky (CNS) calculations, and shell-model calculations for close-to-spherical and the triaxial states.

doi: 10.1103/PhysRevC.92.034314
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2015RA04      Acta Phys.Pol. B46, 477 (2015)

I.Ragnarsson, B.G.Carlsson, A.Kardan, H.-L.Ma

Shape Coexistence, Triaxial Shape and Band Terminations at High Spin

NUCLEAR STRUCTURE 125,126Xe, 161Lu, 164Hf; calculated high-spin rotational bands. The configuration-constrained Cranked Nilsson-Strutinsky formalism with pairing neglected (CNS) and with pairing included (CNSB).

doi: 10.5506/APhysPolB.46.477
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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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2015RU11      J.Radioanal.Nucl.Chem. 303, 1185 (2015)

D.Rudolph, U.Forsberg, P.Golubev, L.G.Sarmiento, A.Yakushev, L.-L.Andersson, A.Di Nitto, Ch.E.Dullmann, J.M.Gates, K.E.Gregorich, C.J.Gross, R.-D.Herzberg, F.P.Hessberger, J.Khuyagbaatar, J.V.Kratz, K.Rykaczewski, M.Schadel, S.Aberg, D.Ackermann, M.Block, H.Brand, B.G.Carlsson, D.Cox, X.Derkx, K.Eberhardt, J.Even, C.Fahlander, J.Gerl, E.Jager, B.Kindler, J.Krier, I.Kojouharov, N.Kurz, B.Lommel, A.Mistry, C.Mokry, H.Nitsche, J.P.Omtvedt, P.Papadakis, I.Ragnarsson, J.Runke, H.Schaffner, B.Schausten, P.Thorle-Pospiech, T.Torres, T.Traut, N.Trautmann, A.Turler, A.Ward, D.E.Ward, N.Wiehl

Selected spectroscopic results on element 115 decay chains

RADIOACTIVITY 288Mc, 284Nh, 280Rg, 276Mt, 272Bh(α), 268Db(SF); measured decay products, Eα, Iα; deduced Q-values, level energies, branching ratios. Comparison with GEANT4 Monte-Carlo simulations.

doi: 10.1007/s10967-014-3445-y
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2015ZE02      Eur.Phys.J. A 51, 50 (2015)

T.Zerrouki, C.M.Petrache, R.Leguillon, K.Hauschild, A.Korichi, A.Lopez-Martens, S.Frauendorf, I.Ragnarsson, H.Hubel, A.Neusser-Neffgen, A.Al-Khatib, P.Bringel, A.Burger, N.Nenoff, G.Schonwasser, A.K.Singh, D.Curien, G.B.Hagemann, B.Herskind, G.Sletten, P.Fallon, A.Gorgen, P.Bednarczyk

Shape evolution and magnetic rotation in 141Nd

NUCLEAR REACTIONS 96Zr(48Ca, 3n), E not given; measured Eγ, Iγ, γγ-coin using EUROBALL spectrometer. 141Nd deduced levels, J, π, γ transitions, high-spin states, γ transitions multipolarity, γ anisotropy, quadrupole high-spin bands; calculated interpretation of high-spin bands, deformation, quadrupole moment, inertia moment, triaxial deformation, shape evolution, B(M1), B(E2), neutron single-particle Routhians using cranked Nilsson-Strutinsky and tilted axis cranking models.

doi: 10.1140/epja/i2015-15050-y
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2014GE01      Phys.Rev. C 89, 024301 (2014)

J.Gellanki, B.G.Carlsson, I.Ragnarsson, D.Rudolph

Comparative study of rotational bands in the A ≈ 60 mass region: Modification of Nilsson parameters

NUCLEAR STRUCTURE 56,57,58,59,60Ni, 60,61,62Zn, 58,59,61Cu; analyzed high-spin levels, J, π, alignments, moment of inertia plots, rotational, well-deformed, terminating and superdeformed bands, configurations; deduced new Nilsson single-particle parameters, level schemes and configurations. Cranked Nilsson-Strutinsky (CNS) approach with optimized Nilsson parameters. Detailed comparisons with experimental data.

doi: 10.1103/PhysRevC.89.024301
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2014KU20      J.Phys.(London) G41, 105110 (2014)

S.Kumar, V.Singh, K.Singh, S.Sihotra, N.Singh, J.Goswamy, S.S.Malik, I.Ragnarsson, T.Trivedi, R.P.Singh, S.Muralithar, R.Kumar, R.K.Bhowmik, R.Palit, A.Bharti, D.Mehta

Band structures in 99Rh

NUCLEAR REACTIONS 75As(28Si, 2n2p)99Rh, E=120 MeV; measured reaction products, Eγ, Iγ, γ-γ-coin.; deduced energy levels, J, π, multipolarity assignments, positive-parity bands. Comparison with available data.

doi: 10.1088/0954-3899/41/10/105110
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2014MA48      Phys.Rev. C 90, 014316 (2014)

H.-L.Ma, B.G.Carlsson, I.Ragnarsson, H.Ryde

Interpretation of the high spin states in 161Lu: A paired and unpaired study

NUCLEAR STRUCTURE 161Lu; calculated and analyzed high-spin levels, J, π, bands, configurations, potential energy surfaces (PES), collective and non-collective states, yrast, normal deformed and triaxial strongly deformed (TSD) bands, transition quadrupole moments, single-proton Routhians, band terminations. 161Lu, 158Er; calculated neutron, proton single particle energies. Paired and unpaired cranked Nilsson-Strutinsky-Bogoliubov (CNSB, CNS) models. Detailed comparison with rotational bands in experimental data.

doi: 10.1103/PhysRevC.90.014316
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2014NA30      Phys.Rev. C 90, 037302 (2014)

S.Nag, P.Singh, A.K.Singh, A.Burger, M.P.Carpenter, S.Chmel, P.Fallon, G.B.Hagemann, B.Herskind, H.Hubel, R.V.F.Janssens, K.Juhasz, T.L.Khoo, F.G.Kondev, A.Korichi, T.Lauritsen, B.M.Nyako, I.Ragnarsson, J.Rogers, G.Sletten, J.Timar, A.N.Wilson, S.Zhu

Revised level structure of 120Te

NUCLEAR REACTIONS 80Se(48Ca, 4nα), E=207 MeV; measured Eγ, Iγ, γγ-coin, γ(θ) using Gammasphere array. 120Te; deduced high-spin levels, J, π, multipolarity, rotational bands. Comparison with cranked Nilsson-Strutinsky model calculations.

doi: 10.1103/PhysRevC.90.037302
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2014RU04      Acta Phys.Pol. B45, 263 (2014)

D.Rudolph, U.Forsberg, P.Golubev, L.G.Sarmiento, A.Yakushev, L.-L.Andersson, A.Di Nitto, Ch.E.Dullmann, J.M.Gates, K.E.Gregorich, C.J.Gross, R.-D.Herzberg, F.P.Hessberger, J.Khuyagbaatar, J.V.Kratz, K.Rykaczewski, M.Schadel, S.Aberg, D.Ackermann, M.Block, H.Brand, B.G.Carlsson, D.Cox, X.Derkx, K.Eberhardt, J.Even, C.Fahlander, J.Gerl, E.Jager, B.Kindler, J.Krier, I.Kojouharov, N.Kurz, B.Lommel, A.Mistry, C.Mokry, H.Nitsche, J.P.Omtvedt, P.Papadakis, I.Ragnarsson, J.Runke, H.Schaffner, B.Schausten, P.Thorle-Pospiech, T.Torres, T.Traut, N.Trautmann, A.Turler, A.Ward, D.E.Ward, N.Wiehl

Alpha-Photon Coincidence Spectroscopy Along Element 115 Decay Chains

RADIOACTIVITY 287,288Mc, 283,284Nh, 279,280Rg, 275,276Mt, 271,272Bh(α), 267,268Db(SF) [from 243Am(48Ca, X), E not given]; measured decay products, Eα, Iα, Eγ, Iγ, X-rays; deduced T1/2, correlated α-decay chains. Comparison with available data.

doi: 10.5506/APhysPolB.45.263
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2014SH15      Phys.Rev. C 90, 014308 (2014)

Y.Shi, D.E.Ward, B.G.Carlsson, J.Dobaczewski, W.Nazarewicz, I.Ragnarsson, D.Rudolph

Structure of superheavy nuclei along decay chains of element 115

NUCLEAR STRUCTURE 264Rf, 268Sg, 272Hs, 276Ds, 280Cn, 284Fl, 288Lv, 292Og, 296120; calculated quadrupole moments. 293Ts, 287,289Mc, 283,285Nh, 279,281Rg, 287,289Lv, 283,285Fl, 279,281Cn, 275,277Ds, 275,277Mt, 273,275Hs, 271,272,273Bh, 271Sg; calculated level energies for various Nilsson configurations, total quadrupole moments, quadrupole mass deformations β2 for one-quasiparticle excitations in nuclei associated with α-decay chains of 287,289Lv, 287Mc, 293Ts and some neighboring nuclei. Self-consistent Skyrme Hartree-Fock-Bogolyubov (SHFB), energy density functional approach (using UNEDF1 and UNEDF1SO) and macroscopic-microscopic Nilsson model for superheavy nuclei. Discussed E1 transitions.

doi: 10.1103/PhysRevC.90.014308
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2013AL19      Phys.Rev. C 88, 054314 (2013)

M.Albers, S.Zhu, R.V.F.Janssens, J.Gellanki, I.Ragnarsson, M.Alcorta, T.Baugher, P.F.Bertone, M.P.Carpenter, C.J.Chiara, P.Chowdhury, A.N.Deacon, A.Gade, B.DiGiovine, C.R.Hoffman, F.G.Kondev, T.Lauritsen, C.J.Lister, E.A.McCutchan, D.S.Moerland, C.Nair, A.M.Rogers, D.Seweryniak

Single-particle and collective excitations in 63Ni

NUCLEAR REACTIONS 26Mg(48Ca, 3n2α)63Ni, E=275, 290, 320 MeV; measured Eγ, Iγ, γγ-, (recoils)γ-coin, γ(θ), γγ(θ), level half-lives by DSAM using FMA analyzer and Gammasphere array at ATLAS-ANL facility. 63Ni; deduced high-spin levels, J, π, rotational bands, multipolarity, transition quadrupole moment and deformation parameter, alignment plots, configurations. Comparison with shell-model, and cranked Nilsson-Strutinsky calculations. Systematics of SD bands, high-deformation bands, and deformation parameters in 56,57,58,59,60,63Ni, 60,61,62,65Zn.

NUCLEAR STRUCTURE 63Ni; calculated levels, J, π using shell-model with JUN45 and jj44b effective interactions. Comparison with experimental data.

doi: 10.1103/PhysRevC.88.054314
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2013LE22      Phys.Rev. C 88, 014323 (2013)

R.Leguillon, C.M.Petrache, T.Zerrouki, T.Konstantinopoulos, K.Hauschild, A.Korichi, A.Lopez-Martens, S.Frauendorf, I.Ragnarsson, P.T.Greenlees, U.Jakobsson, P.Jones, R.Julin, S.Juutinen, S.Ketelhut, M.Leino, P.Nieminen, M.Nyman, P.Peura, P.Rahkila, P.Ruotsalainen, M.Sandzelius, J.Saren, C.Scholey, J.Sorri, J.Uusitalo, H.Hubel, A.Neusser-Neffgen, A.Al-Khatib, A.Burger, N.Nenoff, A.K.Singh, D.Curien, G.B.Hagemann, B.Herskind, G.Sletten, P.Fallon, A.Gorgen, P.Bednarczyk, D.M.Cullen

High-spin spectroscopy of 140Nd

NUCLEAR REACTIONS 96Zr(48Ca, 4n), E=180, 195 MeV; measured Eγ, Iγ, γγ-coin, γγ(θ) using the JUROGAM II+RITU+GREAT setup at Jyvaskyla and the EUROBALL array at the IRS in Strasbourg. Recoil-decay tagging technique. 140Nd; deduced high-spin levels, J, π, multipolarity, bands, alignments, configurations, B(M1)/B(E2), stable triaxial shape at high spin; calculated potential energy surface contours in (β2, γ) plane, single-particle Routhians using cranked Nilsson-Strutinsky and tilted axis cranking models.

doi: 10.1103/PhysRevC.88.014323
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2013MA03      Phys.Lett. B 719, 83 (2013)

P.L.Masiteng, E.A.Lawrie, T.M.Ramashidzha, R.A.Bark, B.G.Carlsson, J.J.Lawrie, R.Lindsay, F.Komati, J.Kau, P.Maine, S.M.Maliage, I.Matamba, S.M.Mullins, S.H.T.Murray, K.P.Mutshena, A.A.Pasternak, I.Ragnarsson, D.G.Roux, J.F.Sharpey-Schafer, O.Shirinda, P.A.Vymers

Close near-degeneracy in a pair of four-quasiparticle bands in 194Tl

NUCLEAR REACTIONS 181Ta(18O, X)194Tl, E=91, 93 MeV; measured reaction products, Eγ, Iγ; deduced energy levels, J, π, rotational bands, high-spin states, B(M1)/B(E2) ratios. Comparison with available data.

COMPILATION 194Tl, 135Nd, 128Cs, 104Rh; compiled difference in excitation energies, alignments, B(M1)/B(E2) ratios.

doi: 10.1016/j.physletb.2013.01.006
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2013NA31      Phys.Rev. C 88, 044335 (2013)

S.Nag, A.K.Singh, I.Ragnarsson, H.Hubel, A.Al-Khatib, P.Bringel, C.Engelhardt, A.Neusser-Neffgen, G.B.Hagemann, B.Herskind, G.Sletten, M.P.Carpenter, R.V.F.Janssens, T.L.Khoo, T.Lauritsen, R.M.Clark, P.Fallon, G.Benzoni, A.Bracco, F.Camera, P.Chowdhury

Collective and noncollective excitations in 122Te

NUCLEAR REACTIONS 82Se(48Ca, 4nα), E=200 MeV; measured Eγ, Iγ, γγ-coin, 3- and 4-fold γγ coincidences, γγ(θ)(ADO ratios) using Gammasphere array at ATLAS-ANL facility. 122Te; deduced high-spin levels, J, π, multipolarities, bands, configurations, alignments, dynamic moments of inertia; calculated total energy surface contours. Comparison with cranked Nilsson-Strutinsky model calculations. Systematics of band properties in 122Te, 125I, 125,126Xe, 132Ce.

doi: 10.1103/PhysRevC.88.044335
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2013PE25      Phys.Rev. C 88, 051303 (2013)

C.M.Petrache, I.Ragnarsson, H.-L.Ma, R.Leguillon, T.Konstantinopoulos, T.Zerrouki, D.Bazzacco, S.Lunardi

Switch from short-axis to intermediate-axis rotation in 138Nd

NUCLEAR STRUCTURE 138Nd; analyzed triaxial high-spin levels, bands, configurations from experiments done at GASP facility published earlier; calculated energies of negative-parity configurations with four high-j particles, potential energy surfaces in (ϵ2, γ) plan. Evidence of switching of rotation from short- to intermediate-axis. Comparison of triaxial band structures in 138,139,140Nd with those in 157,158Er, 163Lu. Cranked Nilsson-Strutinski Bogoliubov (CNSB) formalism.

doi: 10.1103/PhysRevC.88.051303
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2013RE11      Phys.Rev. C 88, 031304 (2013)

J.P.Revill, E.S.Paul, X.Wang, M.A.Riley, J.Simpson, R.V.F.Janssens, J.Ollier, A.J.Boston, M.P.Carpenter, C.J.Chiara, C.R.Hoffman, F.G.Kondev, T.Lauritsen, P.J.Nolan, J.M.Rees, S.V.Rigby, C.Unsworth, S.Zhu, I.Ragnarsson

Quadrupole moments of coexisting collective shapes at high spin in 154Er

NUCLEAR REACTIONS 110Pd(48Ti, 4n), E=215 MeV; measured Eγ, Iγ, γγ-coin, fractional Doppler-shift values F(τ) vs Eγ. 154Er; deduced high-spin levels, triaxial strongly deformed (TSD), and superdeformed (SD) bands, transition quadrupole moments, configurations. Configuration-dependent cranked Nilsson-Strutinsky (CNS) calculations. Total energy surface calculations. Systematics of dynamic moment of inertia plots for bands in N=86 isotones 152Dy, 153Ho and 154Er.

doi: 10.1103/PhysRevC.88.031304
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2013RU11      Phys.Rev.Lett. 111, 112502 (2013)

D.Rudolph, U.Forsberg, P.Golubev, L.G.Sarmiento, A.Yakushev, L.-L.Andersson, A.Di Nitto, Ch.E.Dullmann, J.M.Gates, K.E.Gregorich, C.J.Gross, F.P.Hessberger, R.-D.Herzberg, J.Khuyagbaatar, J.V.Kratz, K.Rykaczewski, M.Schadel, S.Aberg, D.Ackermann, M.Block, H.Brand, B.G.Carlsson, D.Cox, X.Derkx, K.Eberhardt, J.Even, C.Fahlander, J.Gerl, E.Jager, B.Kindler, J.Krier, I.Kojouharov, N.Kurz, B.Lommel, A.Mistry, C.Mokry, H.Nitsche, J.P.Omtvedt, P.Papadakis, I.Ragnarsson, J.Runke, H.Schaffner, B.Schausten, P.Thorle-Pospiech, T.Torres, T.Traut, N.Trautmann, A.Turler, A.Ward, D.E.Ward, N.Wiehl

Spectroscopy of Element 115 Decay Chains

RADIOACTIVITY 288Mc, 284Nh, 280Rg, 276Mt, 272Bh(α) [from 243Am(48Ca, X), E=5.4 MeV/nucleon]; measured decay products, Eα, Iα, Eγ, Iγ, X-rays. 280Rg, 276Mt; deduced T1/2, Q-value, α-decay scheme. Comparison with Monte Carlo calculations.

doi: 10.1103/PhysRevLett.111.112502
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2012GE04      Phys.Rev. C 86, 034304 (2012)

J.Gellanki, D.Rudolph, I.Ragnarsson, L.-L.Andersson, C.Andreoiu, M.P.Carpenter, J.Ekman, C.Fahlander, E.K.Johansson, A.Kardan, W.Reviol, D.G.Sarantites, D.Seweryniak, C.E.Svensson, J.C.Waddington

Extensive γ-ray spectroscopy of band structures in 3062Zn32

NUCLEAR REACTIONS 28Si(36Ar, 2p), E AP 140 MeV; 40Ca(28Si, 2pα), E=122 MeV; measured Eγ, Iγ, γγ-, (particle)γ-coin, γγ(θ)(DCO). 62Zn; deduced levels, J, π, normal deformation, well-deformed, terminating and superdeformed bands, multipolarity, mixing ratio, alignments, configurations. Comparison with cranked Nilsson-Strutinsky calculations.

doi: 10.1103/PhysRevC.86.034304
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2012GE07      Phys.Scr. T150, 014013 (2012)

J.Gellanki, D.Rudolph, I.Ragnarsson, L.-L.Andersson, C.Andreoiu, M.P.Carpenter, J.Ekman, C.Fahlander, E.K.Johansson, W.Reviol, D.G.Sarantites, D.Seweryniak, C.E.Svensson

High-spin structure studies in 62Zn

NUCLEAR REACTIONS 40Ca(28Si, 2pα)62Zn, E=122 MeV; 28Si(36Ar, 2p)62Zn, E≈140 MeV; measured reaction products, Eγ, Iγ; deduced level scheme, J, π, multipolarities, rotational bands. Comparison with cranked Nilsson-Strutinsky calculations.

doi: 10.1088/0031-8949/2012/T150/014013
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2012KA22      Phys.Rev. C 86, 014309 (2012)

A.Kardan, I.Ragnarsson, H.Miri-Hakimabad, L.Rafat-Motevali

Interpretation of the large-deformation high-spin bands in select A=158-168 nuclei

NUCLEAR STRUCTURE 168Hf, 158Er, 161,163,164,165,167Lu; calculated single-neutron and proton orbitals, levels, J, π of triaxial superdeformed (TSD) bands, potential-energy surface contours as function of quadrupole deformation and triaxiality parameter γ, total excitation energies, dynamic moments of inertia, relative alignments, configurations. Effects of inclusion of the hexadecapole degree of freedom. Configuration-constrained Cranked Nilsson-Strutinsky (CNS) calculations. Comparison with experimental data.

doi: 10.1103/PhysRevC.86.014309
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2012NA01      Phys.Rev. C 85, 014310 (2012)

S.Nag, A.K.Singh, A.N.Wilson, J.Rogers, H.Hubel, A.Burger, S.Chmel, I.Ragnarsson, G.Sletten, B.Herskind, M.P.Carpenter, R.V.F.Janssens, T.L.Khoo, F.G.Kondev, T.Lauritsen, S.Zhu, A.Korichi, H.Ha, P.Fallon, A.O.Macchiavelli, B.M.Nyako, J.Timar, K.Juhasz

Collective and noncollective states in 120Te

NUCLEAR REACTIONS 80Se(48Ca, 4nα), E=207 MeV; measured Eγ, Iγ, γγ-coin, γ(θ) using Gammasphere array. 120Te; deduced levels, J, π, multipolarity, high-spin rotational bands, non-collective states, moments of inertia; calculated Routhians, total energy surfaces. Comparison with cranked Nilsson-Strutinsky model calculations.

doi: 10.1103/PhysRevC.85.014310
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2012RE23      J.Phys.:Conf.Ser. 381, 012066 (2012)

J.P.Revill, E.S.Paul, X.Wang, M.A.Riley, J.Simpson, J.Ollier, A.J.Boston, M.P.Carpenter, C.J.Chiara, C.Hoffman, R.V.F.Janssens, F.G.Kondev, T.Lauritsen, P.J.Nolan, J.M.Rees, S.V.Rigby, C.Unsworth, S.Zhu, I.Ragnarsson

Relative quadrupole moments of exotic shapes at ultrahigh spin in 154Er: calibrating the TSD/SD puzzle

NUCLEAR REACTIONS 110Pd(48Ti, X), E=215 MeV; measured Eγ, Iγ, γγ-coin using Gammasphere, Doppler shift. 154Er deduced high spin (ultrahigh) transition quadrupole moment using DSAAM (Doppler shift attenuation method), axial superdeformed shape, triaxial strongly deformed shape, rotational bands, inertia moments.Inertia moments compared with those obtained in 152Dy and 153Ho.

doi: 10.1088/1742-6596/381/1/012066
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2012SI04      Phys.Rev. C 85, 034319 (2012)

P.Singh, A.K.Singh, A.N.Wilson, J.Rogers, H.Hubel, A.Burger, S.Chmel, I.Ragnarsson, G.Sletten, B.Herskind, M.P.Carpenter, R.V.F.Janssens, T.L.Khoo, F.G.Kondev, T.Lauritsen, S.Zhu, A.Korichi, H.Ha, P.Fallon, B.M.Nyako, J.Timar, K.Juhasz

Core excitations beyond maximally aligned configurations in 123I

NUCLEAR REACTIONS 80Se(48Ca, 4np)123I, E=207 MeV; measured Eγ, Iγ, γγ-coin, angular asymmetry ratios using Gammasphere array. 123I; deduced high-spin levels, J, π, multipolarity, bands, configurations, alignments; calculated potential energy surfaces. Comparison with Cranked Nilsson-Strutinsky calculations.

doi: 10.1103/PhysRevC.85.034319
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2012SI09      Phys.Rev. C 85, 054311 (2012)

P.Singh, S.Nag, K.Selvakumar, A.K.Singh, I.Ragnarsson, A.Bisoi, A.Goswami, S.Bhattacharya, S.Kumar, K.Singh, J.Sethi, S.Saha, T.Trivedi, S.V.Jadhav, R.Donthi, B.S.Naidu, R.Palit

High-spin spectroscopy of 122I

NUCLEAR REACTIONS 116Cd(11B, 5n), E=65 MeV; measured Eγ, Iγ, γγ-coin, angular distribution ratios, γγ(linear pol) using INGA array at TIFR, Mumbai facility. 122I; deduced high-spin levels, J, π, bands, multipolarity, configurations, band-crossing frequencies, alignment plots, signature splitting, and B(M1)/B(E2) ratios; calculated total energy surface contours in β-γ plane. Cranked Nilsson-Strutinsky calculations.

doi: 10.1103/PhysRevC.85.054311
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2012SI21      Phys.Rev. C 86, 067305 (2012)

P.Singh, A.K.Singh, A.N.Wilson, I.Ragnarsson, H.Hubel, A.Burger, M.P.Carpenter, S.Chmel, P.Fallon, G.B.Hagemann, B.Herskind, H.Ha, R.V.F.Janssens, K.Juhasz, A.Kardan, T.L.Khoo, F.G.Kondev, A.Korichi, T.Lauritsen, B.M.Nyako, J.Rogers, G.Sletten, J.Timar, S.Zhu

High-spin rotational bands in 123I

NUCLEAR REACTIONS 80Se(48Ca, 4np)123I, E=207 MeV; measured Eγ, Iγ, γγ-coin using Gammasphere array. 123I; deduced high-spin levels, J, π, bands, alignments, configurations; calculated potential energy surface contours. Cranked Nilsson-Strutinsky model calculations.

doi: 10.1103/PhysRevC.86.067305
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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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2011BH07      Phys.Rev. C 84, 024313 (2011)

S.Bhowal, G.Gangopadhyay, C.M.Petrache, I.Ragnarsson, A.K.Singh, S.Bhattacharya, H.Hubel, A.Neusser-Neffgen, A.Al-Khatib, P.Bringel, A.Burger, N.Nenoff, G.Schonwasser, G.B.Hagemann, B.Herskind, D.R.Jensen, G.Sletten, P.Fallon, A.Gorgen, P.Bednarczyk, D.Curien, A.Korichi, A.Lopez-Martens, B.V.T.Rao, T.S.Reddy, N.Singh

Development of collective structures over noncollective excitations in 139Nd

NUCLEAR REACTIONS 96Zr(48Ca, 5n), E=195 MeV; measured Eγ, Iγ, γγ-coin, γγ(θ)(DCO) using Euroball array. 139Nd; deduced levels, J, π, bands, dipole bands, multipolarity, high-spin configuration. Comparison with cranked-Nilsson-Strutinsky (CNS) calculations.

doi: 10.1103/PhysRevC.84.024313
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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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2011PA27      Phys.Rev. C 84, 047302 (2011)

E.S.Paul, C.Fox, A.J.Boston, H.J.Chantler, C.J.Chiara, R.M.Clark, M.Cromaz, M.Descovich, P.Fallon, D.B.Fossan, A.A.Hecht, T.Koike, I.Y.Lee, A.O.Macchiavelli, P.J.Nolan, K.Starosta, R.Wadsworth, I.Ragnarsson

High-spin yrast states in the γ-soft nuclei 135Pr and 134Ce

NUCLEAR REACTIONS 116Cd(23Na, 4n), (23Na, 4np), E=115 MeV; measured Eγ, Iγ, γγ-coin using Gammasphere array. 135Pr, 134Ce; deduced levels, J, π, yrast bands, alignment plots, configurations; calculated potential energy surfaces. Comparison with cranking model calculations.

doi: 10.1103/PhysRevC.84.047302
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2011SI18      Phys.Rev. C 84, 024316 (2011)

P.Singh, S.Nag, A.K.Singh, I.Ragnarsson, H.Hubel, A.Al-Khatib, P.Bringel, C.Engelhardt, A.Neusser-Neffgen, G.B.Hagemann, C.R.Hansen, B.Herskind, G.Sletten, A.Bracco, G.Benzoni, F.Camera, P.Fallon, R.M.Clark, M.P.Carpenter, R.V.F.Janssens, T.L.Khoo, T.Lauritsen, P.Chowdhury, H.Amro

Highly deformed high-spin band in 125I

NUCLEAR REACTIONS 82Se(48Ca, 4np), E=200 MeV; measured Eγ, Iγ, γγ- coin using Gammasphere array. 125I; deduced levels, J, π, highly-deformed bands, multipolarity, configurations, alignments, dynamic moments of inertia. 125I, 126Xe; calculated potential energy surfaces, Routhians using cranked Nilsson-Strutinsky formalism.

doi: 10.1103/PhysRevC.84.024316
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2011WA12      Phys.Lett. B 701, 306 (2011)

R.Wadsworth, I.Ragnarsson, B.G.Carlsson, H.-L.Ma, P.J.Davies, C.Andreoiu, R.A.E.Austin, M.P.Carpenter, D.Dashdorj, S.J.Freeman, P.E.Garrett, J.Greene, A.Gorgen, D.G.Jenkins, F.Johnston-Theasby, P.Joshi, A.O.Macchiavelli, F.Moore, G.Mukherjee, W.Reviol, D.G.Sarantites, D.Seweryniak, C.E.Svensson, J.J.Valiente-Dobon

Evidence for shape coexistence at medium spin in 76Rb

NUCLEAR REACTIONS 40Ca(40Ca, n3p)76Rb, E=165 MeV; measured reaction products, Eγ, Iγ, γ-γ-γ-coin.; deduced rotational bands, energies, J, π, negative-parity bands, oblate and prolate shape coexistence. Cranked Nilsson-Strutinsky model calculations.

doi: 10.1016/j.physletb.2011.06.006
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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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2010HA24      Phys.Rev. C 82, 044319 (2010)

A.B.Hayes, D.Cline, K.J.Moody, I.Ragnarsson, C.Y.Wu, J.A.Becker, M.P.Carpenter, J.J.Carroll, D.Gohlke, J.P.Greene, A.A.Hecht, R.V.F.Janssens, S.A.Karamian, T.Lauritsen, C.J.Lister, R.A.Macri, R.Propri, D.Seweryniak, X.Wang, R.Wheeler, S.Zhu

Coulomb excitation of a 242Am isomeric target: E2 and E3 strengths, rotational alignment, and collective enhancement

NUCLEAR REACTIONS 242mAm(40Ar, 40Ar'), E=170.5 MeV; measured Eγ, Iγ, (particle)γ-, γγ-coin using Gammasphere array. 242Am; deduced levels, J, π, rotational bands, Nilsson configurations, band parameters, alignments, B(E1), B(E2) and B(E3) strengths. Coulomb excitation. Comparison of alignment of the observed bands in 242Am with single-particle alignments in 241Am and with particle-rotor model calculations.

doi: 10.1103/PhysRevC.82.044319
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2010ID01      Phys.Rev. C 81, 034303 (2010)

E.Ideguchi, B.Cederwall, E.Ganioglu, B.Hadinia, K.Lagergren, T.Back, A.Johnson, R.Wyss, S.Eeckhaudt, T.Grahn, P.Greenlees, R.Julin, S.Juutinen, H.Kettunen, M.Leino, A.-P.Leppanen, P.Nieminen, M.Nyman, J.Pakarinen, P.Rahkila, C.Scholey, J.Uusitalo, D.T.Joss, E.S.Paul, D.R.Wiseman, R.Wadsworth, A.V.Afanasjev, I.Ragnarsson

High-spin intruder band in 107In

NUCLEAR REACTIONS 58Ni(52Cr, 3p), E=187 MeV; measured Eγ, Iγ, γγ-, (recoil)γ-coin, γ(θ) using the JUROGAM array. 107In; deduced levels, J, π, multipolarity, mixing ratios, M1 band and a smooth-terminating band, dynamical moments of inertia, and configurations. Calculated potential energy surfaces. Comparisons with total Routhian surface and cranked Nilsson-Strutinsky calculations, and with systematics of rotational band structures in 105Ag, 106Cd, 108Sn, 109Sb, 110Te and 111I. 104Cd, 106In, 107Sn; measured Eγ.

doi: 10.1103/PhysRevC.81.034303
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2010LA15      Eur.Phys.J. A 45, 39 (2010)

E.A.Lawrie, P.A.Vymers, Ch.Vieu, J.J.Lawrie, C.Schuck, R.A.Bark, R.Lindsay, G.K.Mabala, S.M.Maliage, P.L.Masiteng, S.M.Mullins, S.H.T.Murray, I.Ragnarsson, T.M.Ramashidzha, J.F.Sharpey-Schafer, O.Shirinda

Candidate chiral bands in 198Tl

NUCLEAR REACTIONS 197Au(α, 3n), E=40 MeV; measured Eγ, Iγ(θ), E(ce), I(ce), (ce)γ-coin, γγ-coin, polarization anisotropy. 198Tl; deduced γ transitions, multipolarities, internal-conversion X-rays, levels, J, π, B(M1), B(E2) for yrast and side bands; calculated levels, J, π, B(M1), B(E2) for yrast and side bands, rotation-angular momentum angle.

doi: 10.1140/epja/i2010-10994-x
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2010RA08      Int.J.Mod.Phys. E19, 590 (2010)

I.Ragnarsson, B.G.Carlsson, H.Ryde

Terminating states in Z = 71 Lu nuclei with N ≈ 90

NUCLEAR STRUCTURE 161Lu; calculated high-spin yrast states; deduced yrast region termination. Cranked Nilsson-Strutinsky approach.

doi: 10.1142/S021830131001500X
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2010RU01      J.Phys.(London) G37, 075105 (2010)

D.Rudolph, I.Ragnarsson, W.Reviol, C.Andreoiu, M.A.Bentley, M.P.Carpenter, R.J.Charity, R.M.Clark, M.Cromaz, J.Ekman, C.Fahlander, P.Fallon, E.Ideguchi, A.O.Macchiavelli, M.N.Mineva, D.G.Sarantites, D.Seweryniak, S.J.Williams

Rotational bands in the semi-magic nucleus 5728Ni29

NUCLEAR REACTIONS 28Si(32S, n2p)57Ni, E=130 MeV; measured Eγ, Iγ, γ-γ-coins.; deduced high-spin states, superdeformed rotational bands. Cranked Nilsson-Strutinsky calculations, GAMMASPHERE.

doi: 10.1088/0954-3899/37/7/075105
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2010RU10      Phys.Rev. C 82, 054309 (2010)

D.Rudolph, L.-L.Andersson, R.Bengtsson, J.Ekman, O.Erten, C.Fahlander, E.K.Johansson, I.Ragnarsson, C.Andreoiu, M.A.Bentley, M.P.Carpenter, R.J.Charity, R.M.Clark, P.Fallon, A.O.Macchiavelli, W.Reviol, D.G.Sarantites, D.Seweryniak, C.E.Svensson, S.J.Williams

Isospin and deformation studies in the odd-odd N=Z nucleus 54Co

NUCLEAR REACTIONS 28Si(32S, npα), E=130 MeV; measured Eγ, Iγ, γγ-, αγ-, nγ-, pγ-coin, γγ(θ) using Gammasphere and Microball arrays. 54Co; deduced levels, J, π, multipolarities, mixing ratios, configurations. Comparison with large-scale shell-model calculations in the fp shell.

doi: 10.1103/PhysRevC.82.054309
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2010SI21      Phys.Rev. C 82, 034301 (2010)

P.Singh, S.Nag, A.K.Singh, H.Hubel, A.Al-Khatib, P.Bringel, C.Engelhardt, A.Neusser-Neffgen, I.Ragnarsson, M.P.Carpenter, R.V.F.Janssens, T.L.Khoo, T.Lauritsen, G.B.Hagemann, C.R.Hansen, B.Herskind, G.Sletten, A.Bracco, G.Benzoni, F.Camera, P.Fallon, R.M.Clark, P.Chowdhury, H.Amro

Noncollective aligned and antialigned states in 125I

NUCLEAR REACTIONS 82Se(48Ca, 4np), E=205 MeV; measured Eγ, Iγ, γγ-coin, γ(θ) ratios using Gammasphere array. 125I; deduced levels, J, π, bands, highly-deformed bands, multipolarities, and configurations. Comparison with cranked Nilsson-Strutinsky (CNS) calculations.

NUCLEAR STRUCTURE 125I; calculated levels and total energy surfaces.

doi: 10.1103/PhysRevC.82.034301
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2009AN01      Phys.Rev. C 79, 024312 (2009)

L.-L.Andersson, I.Ragnarsson, D.Rudolph, E.K.Johansson, D.A.Torres, C.Andreoiu, M.P.Carpenter, R.J.Charity, C.J.Chiara, J.Ekman, C.Fahlander, C.Hoel, O.L.Pechenaya, W.Reviol, R.du Rietz, D.G.Sarantites, D.Seweryniak, L.G.Sobotka, S.Zhu

Comprehensive γ-ray spectroscopy of rotational bands in the N = Z + 1nucleus 61Zn

NUCLEAR REACTIONS 36Ar(28Si, n2p), E=142, 148 MeV; measured Eγ, Iγ, γγ-coin, neutron and particle spectra. 61Zn; deduced levels, J, π, multipolarity, bands. Comparison with Cranked Nilsson-Strutinsky calculations.

doi: 10.1103/PhysRevC.79.024312
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2009CH26      Phys.Rev. C 79, 054332 (2009)

S.Chanda, T.Bhattacharjee, S.Bhattacharyya, A.Mukherjee, S.K.Basu, I.Ragnarsson, R.K.Bhowmik, S.Muralithar, R.P.Singh, S.S.Ghugre, U.Datta Pramanik

Seven-quasiparticle bands in 139Ce

NUCLEAR REACTIONS 130Te(12C, 3n), E=65 MeV; measured Eγ, Iγ, γγ, γγ(θ), γ(lin pol). 139Ce; deduced levels, J, π, configurations, multipolarities, bands. 139,140Ce; level systematics. Comparison with large-basis shell-model and cranked Nilsson-Strutinsky (CNS) calculations.

doi: 10.1103/PhysRevC.79.054332
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2009GE14      Phys.Rev. C 80, 051304 (2009)

J.Gellanki, I.Ragnarsson, D.Rudolph, C.E.Svensson, L.-L.Andersson, C.Andreoiu, C.Baktash, M.P.Carpenter, R.J.Charity, C.J.Chiara, J.Eberth, J.Ekman, C.Fahlander, D.S.Haslip, E.K.Johansson, D.R.LaFosse, S.D.Paul, O.L.Pechenaya, W.Reviol, R.du Rietz, D.G.Sarantites, D.Seweryniak, L.G.Sobotka, H.G.Thomas, D.A.Torres, J.C.Waddington, J.N.Wilson, C.H.Yu, S.Zhu

Characterization of superdeformed bands in 62Zn

NUCLEAR REACTIONS 28Si(36Ar, 2p), E=140 MeV; 40Ca(28Si, 2pα), E=122 MeV; measured Eγ, Iγ, γγ-coin, DCO using Gammasphere array. 62Zn; deduced levels, J, π, moment of inertia, configurations. Comparison with cranked Nilsson-Strutinsky calculations.

doi: 10.1103/PhysRevC.80.051304
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2009JO03      Phys.Rev. C 80, 014321 (2009)

E.K.Johansson, D.Rudolph, I.Ragnarsson, L.-L.Andersson, D.A.Torres, C.Andreoiu, C.Baktash, M.P.Carpenter, R.J.Charity, C.J.Chiara, J.Ekman, C.Fahlander, O.L.Pechenaya, W.Reviol, R.du Rietz, D.G.Sarantites, D.Seweryniak, L.G.Sobotka, C.H.Yu, S.Zhu

Thorough γ-ray and particle decay investigations of 58Ni

NUCLEAR REACTIONS 28Si(36Ar, 2pα), E=136, 143, 148 MeV; measured Eγ, Iγ, Ep, Ip, Eα, (particle)γ-, nγ-, pγ-, αγ-, γγ-coin, γγ(θ), DCO. 58Ni; deduced levels, J, π, multipolarity, mixing ratio, bands and configurations. 57Co, 54Fe; deduced levels, J, π from prompt proton and α emission from 58Ni high-spin states. Comparison with large-scale shell model and cranked Nilsson-Strutinsky calculations.

doi: 10.1103/PhysRevC.80.014321
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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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2009PA17      Phys.Rev. C 79, 044324 (2009)

E.S.Paul, S.V.Rigby, M.A.Riley, J.Simpson, D.E.Appelbe, D.B.Campbell, P.T.W.Choy, R.M.Clark, M.Cromaz, A.O.Evans, P.Fallon, A.Gorgen, D.T.Joss, I.Y.Lee, A.O.Macchiavelli, P.J.Nolan, A.Pipidis, D.Ward, I.Ragnarsson

Loss of collectivity in the transitional 156Er nucleus at high spin

NUCLEAR REACTIONS 114Cd(48Ca, 6n), E=215 MeV; measured Eγ, Iγ, γγ-coin, angular distributions. 156Er; deduced levels, J, π, angular distribution coefficients, bands, multipolarities, B(M1), B(M1)/B(E2), configurations, alignments as a function of rotational frequency. Nilsson-Strutinsky calculations. Potential energy surface calculations. 152Gd, 154Dy, 156Er, 158Yb, 160Hf; level and configuration systematics.

doi: 10.1103/PhysRevC.79.044324
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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


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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2008AN06      Eur.Phys.J. A 36, 251 (2008)

L.-L.Andersson, D.Rudolph, E.K.Johansson, D.A.Torres, B.G.Carlsson, I.Ragnarsson, C.Andreoiu, C.Baktash, M.P.Carpenter, R.J.Charity, C.J.Chiara, J.Ekman, C.Fahlander, C.Hoel, O.L.Pechenaya, W.Reviol, R.du Rietz, D.G.Sarantites, D.Seweryniak, L.G.Sobotka, C.H.Yu, S.Zhu

Extensive γ-ray spectroscopy of normally and superdeformed structures in 6129Cu32

NUCLEAR REACTIONS 28Si(36Ar, 3p), E=142, 143, 148 MeV; measured Eγ, Iγ, En, In, charged-particle spectra, (proton)γ-, γγ-coin. 61Cu deduced energy levels, J, π, band structure, configurations, transition intensities and multipolarities using directional correlations of oriented states analysis. Comparison with shell model and cranked Nilsson-Strutinsky calculations. Gammasphere and Microball arrays. Enriched target.

doi: 10.1140/epja/i2008-10590-9
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2008CA16      Phys.Rev. C 78, 034316 (2008)

B.G.Carlsson, I.Ragnarsson, R.Bengtsson, E.O.Lieder, R.M.Lieder, A.A.Pasternak

Triaxial shape with rotation around the longest principal axis in 142Gd

NUCLEAR REACTIONS 99Ru(48Ti, 3n2p), E=240 MeV; measured Eγ, Iγ, half-lives using doppler shift attenuation method. 142Gd; deduced levels, B(E2), bands, configurations; calculated energy of configurations in rotational bands, deformations, potential energy surfaces. Cranking model.

doi: 10.1103/PhysRevC.78.034316
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2008JO04      Phys.Rev. C 77, 064316 (2008)

E.K.Johansson, D.Rudolph, L.-L.Andersson, D.A.Torres, I.Ragnarsson, C.Andreoiu, C.Baktash, M.P.Carpenter, R.J.Charity, C.J.Chiara, J.Ekman, C.Fahlander, C.Hoel, O.L.Pechenaya, W.Reviol, R.du Rietz, D.G.Sarantites, D.Seweryniak, L.G.Sobotka, C.H.Yu, S.Zhu

Prompt proton decay and deformed bands in 56Ni

NUCLEAR REACTIONS 28Si(36Ar, 2α), E=142, 143, 148 MeV; measured Eγ, Iγ, γγ-coin, angular distributions, multipolarities. 56Ni; deduced levels, J, π, bands, deformation parameters. Comparison with cranked Nilsson-Strutinsky calculations.

RADIOACTIVITY 56Ni(p); measured proton spectra. 55Co; deduced levels, J, π.

doi: 10.1103/PhysRevC.77.064316
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2008LA11      Phys.Rev. C 78, 021305 (2008)

E.A.Lawrie, P.A.Vymers, J.J.Lawrie, Ch.Vieu, R.A.Bark, R.Lindsay, G.K.Mabala, S.M.Maliage, P.L.Masiteng, S.M.Mullins, S.H.T.Murray, I.Ragnarsson, T.M.Ramashidzha, C.Schuck, J.F.Sharpey-Schafer, O.Shirinda

Possible chirality in the doubly-odd 198Tl nucleus: Residual interaction at play

NUCLEAR REACTIONS 197Au(α, 3n), E=40 MeV; measured Eγ, Iγ, E(CE), I(CE), γγ-, (ce)γ-coin. 198Tl; deduced levels, J, π, quasiparticle alignments, band configurations, B(E2), B(M1), chiral behaviour. Comparison with 2-quasiparticle plus triaxial rotor model calculations.

doi: 10.1103/PhysRevC.78.021305
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2008LI08      Eur.Phys.J. A 35, 135 (2008)

E.O.Lieder, A.A.Pasternak, R.M.Lieder, A.D.Efimov, V.M.Mikhajlov, B.G.Carlsson, I.Ragnarsson, W.Gast, Ts.Venkova, T.Morek, S.Chmel, G.de Angelis, D.R.Napoli, A.Gadea, D.Bazzacco, R.Menegazzo, S.Lunardi, W.Urban, Ch.Droste, T.Rzaca-Urban, G.Duchene, A.Dewald

Investigation of lifetimes in quadrupole bands of 142Gd

NUCLEAR REACTIONS 114Sn(32S, 2n2p), E=160 MeV; 99Ru(48Ti, 3n2p), E=240 MeV; measured Eγ, Iγ, γγ-coin, DSA. 142Gd deduced high-spin levels, J, π, B(E2), T1/2; calculated configurations with cranked Nilsson-Strutinsky and interacting boson models. Euroball III and IV arrays.

doi: 10.1140/epja/i2007-10533-0
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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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2008TO15      Phys.Rev. C 78, 054318 (2008)

D.A.Torres, F.Cristancho, L.-L.Andersson, E.K.Johansson, D.Rudolph, C.Fahlander, J.Ekman, R.du Rietz, C.Andreoiu, M.P.Carpenter, D.Seweryniak, S.Zhu, R.J.Charity, C.J.Chiara, C.Hoel, O.L.Pechenaya, W.Reviol, D.G.Sarantites, L.G.Sobotka, C.Baktash, C.-H.Yu, B.G.Carlsson, I.Ragnarsson

Deformations and magnetic rotations in the 60Ni nucleus

NUCLEAR REACTIONS 28Si(36Ar, 4p), E=134, 143, 148 MeV; measured Eγ, Iγ, γγ-coin, angular distributions. 60Ni; deduced levels, J, π, multipolarity, mixing ratios, B(M1), B(E2). Comparison with cranked Nilsson Strutinsky calculations.

doi: 10.1103/PhysRevC.78.054318
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2008VA03      Phys.Rev. C 77, 024312 (2008)

J.J.Valiente-Dobon, C.E.Svensson, A.V.Afanasjev, I.Ragnarsson, C.Andreoiu, D.E.Appelbe, R.A.E.Austin, G.C.Ball, J.A.Cameron, M.P.Carpenter, R.M.Clark, M.Cromaz, D.Dashdorj, P.Fallon, S.J.Freeman, P.E.Garrett, A.Gorgen, G.F.Grinyer, D.F.Hodgson, B.Hyland, D.Jenkins, F.Johnston-Theasby, P.Joshi, N.S.Kelsall, A.O.Macchiavelli, D.Mengoni, F.Moore, G.Mukherjee, A.A.Phillips, W.Reviol, D.Sarantites, M.A.Schumaker, D.Seweryniak, M.B.Smith, J.C.Waddington, R.Wadsworth, D.Ward

Low-spin lifetime measurements in 74Kr

NUCLEAR REACTIONS 40Ca(40Ca, 2pα), E=165 MeV; measured Eγ, Iγ, half-lives, transition quadrupole moments. 74Kr; deduced excitation energies, rotational bands.

doi: 10.1103/PhysRevC.77.024312
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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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2007PA03      Phys.Rev.Lett. 98, 012501 (2007)

E.S.Paul, P.J.Twin, A.O.Evans, A.Pipidis, M.A.Riley, J.Simpson, D.E.Appelbe, D.B.Campbell, P.T.W.Choy, R.M.Clark, M.Cromaz, P.Fallon, A.Gorgen, D.T.Joss, I.Y.Lee, A.O.Macchiavelli, P.J.Nolan, D.Ward, I.Ragnarsson

Return of Collective Rotation in 157Er and 158Er at Ultrahigh Spin

NUCLEAR REACTIONS 114Cd(48Ca, 4n), (48Ca, 5n), E=215 MeV; measured Eγ, Iγ, γγ-coin. 157,158Er deduced high-spin levels, J, π, configurations, collective rotation above band-terminating states. Gammasphere array, cranked Nilsson-Strutinsky calculations.

doi: 10.1103/PhysRevLett.98.012501
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2007PA07      Phys.Rev. C 75, 014308 (2007)

E.S.Paul, K.Starosta, A.O.Evans, A.J.Boston, H.J.Chantler, C.J.Chiara, M.Devlin, A.M.Fletcher, D.B.Fossan, D.R.LaFosse, G.J.Lane, I.Y.Lee, A.O.Macchiavelli, P.J.Nolan, D.G.Sarantites, J.M.Sears, A.T.Semple, J.F.Smith, C.Vaman, A.V.Afanasjev, I.Ragnarsson

Smooth terminating bands in 112Te: Particle-hole induced collectivity

NUCLEAR REACTIONS 58Ni(58Ni, 4p), (58Ni, 2p), E=240, 250 MeV; measured Eγ, Iγ, γγ-, (charged particle)γ-coin, DSA. 112Te deduced high-spin levels, J, π, T1/2, configurations, deformation, band termination features. 114Xe levels deduced T1/2, transition quadrupole moment. Gammasphere, Microball arrays.

doi: 10.1103/PhysRevC.75.014308
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2007PA35      Phys.Rev. C 76, 034323 (2007)

E.S.Paul, A.O.Evans, A.J.Boston, C.J.Chiara, M.Devlin, D.B.Fossan, S.J.Freeman, D.R.LaFosse, G.J.Lane, M.J.Leddy, I.Y.Lee, A.O.Macchiavelli, P.J.Nolan, D.G.Sarantites, J.M.Sears, A.T.Semple, J.F.Smith, K.Starosta, A.V.Afanasjev, I.Ragnarsson

γ-ray spectroscopy of neutron-deficient 110Te. II. High-spin smooth-terminating structures

NUCLEAR REACTIONS 58Ni(58Ni, 2pα), E=240, 250 MeV; measured Eγ, Iγ, γγ, (particle)γ-coinc. 110Te deduced levels, J, π, multipolarity.

doi: 10.1103/PhysRevC.76.034323
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2007ST28      Eur.Phys.J. A 33, 303 (2007)

T.Steinhardt, J.Eberth, I.Ragnarsson

Stable collective triaxial rotation in 77Kr

NUCLEAR STRUCTURE 77Kr; calculated level energies and deformation parameters using configuration-dependent cranked Nilsson-Strutinsky model.

doi: 10.1140/epja/i2006-10456-2
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2006CA21      Phys.Rev. C 74, 011302 (2006)

B.G.Carlsson, I.Ragnarsson

Calculating the nuclear mass in the very high angular momentum regime

NUCLEAR STRUCTURE 20Ne, 36Ar, 59Cu, 62Zn, 109,110Sb, 113I, 158Er, 152,156Dy, 194Hg; analyzed high-spin level energies, deformations. Lublin-Strasbourg drop model, finite-range liquid drop model, cranked Nilsson-Strutinsky model.

doi: 10.1103/PhysRevC.74.011302
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2006CA29      Phys.Rev. C 74, 044310 (2006)

B.G.Carlsson, I.Ragnarsson

Many-particles-plus-rotor description of magnetic bands at high spin

NUCLEAR STRUCTURE 198,199Pb; calculated magnetic rotational bands energies, configurations. Many-particles-plus-rotor description.

doi: 10.1103/PhysRevC.74.044310
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2006CA33      Phys.Scr. T125, 130 (2006)

B.G.Carlsson, I.Ragnarsson

Calculations of nuclear masses at finite angular momenta

NUCLEAR STRUCTURE 58Ni, 72Kr; calculated high-spin states energies, deformation. Macroscopic-microscopic method.

doi: 10.1088/0031-8949/2006/T125/030
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2006DO13      Phys.Rev. C 74, 014308 (2006)

B.-G.Dong, H.-C.Guo, I.Ragnarsson

Triaxial shape induced by couplings between equatorial orbitals

NUCLEAR STRUCTURE 126,128,130,132Pr; calculated rotational bands energies, signature splitting, triaxial deformation. Configuration-dependent cranking calculations.

doi: 10.1103/PhysRevC.74.014308
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2006EV01      Phys.Lett. B 636, 25 (2006)

A.O.Evans, E.S.Paul, A.J.Boston, H.J.Chantler, C.J.Chiara, M.Devlin, A.M.Fletcher, D.B.Fossan, D.R.LaFosse, G.J.Lane, I.Y.Lee, A.O.Macchiavelli, P.J.Nolan, D.G.Sarantites, J.M.Sears, A.T.Semple, J.F.Smith, K.Starosta, C.Vaman, A.V.Afanasjev, I.Ragnarsson

Magnetic properties of smooth terminating dipole bands in 110, 112Te

NUCLEAR REACTIONS 58Ni(58Ni, 2pα), (58Ni, 4p), E=240, 250 MeV; measured Eγ, Iγ, γγ-, (charged particle)γ-coin, DSA. 110,112Te deduced high-spin levels, J, π, B(M1), B(E2), T1/2. Gammasphere and Microball arrays.

doi: 10.1016/j.physletb.2006.03.020
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2006EV02      Phys.Rev. C 73, 064303 (2006)

A.O.Evans, E.S.Paul, J.Simpson, M.A.Riley, D.E.Appelbe, D.B.Campbell, P.T.W.Choy, R.M.Clark, M.Cromaz, P.Fallon, A.Gorgen, D.T.Joss, I.Y.Lee, A.O.Macchiavelli, P.J.Nolan, A.Pipidis, D.Ward, I.Ragnarsson

High-spin structure in 157Er up to and above band termination

NUCLEAR REACTIONS 114Cd(48Ca, 5n), E=215 MeV; measured Eγ, Iγ, γγ-coin. 157Er deduced high-spin levels, J, π, configurations, B(M1)/B(E2), band termination. Gammasphere array.

doi: 10.1103/PhysRevC.73.064303
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2006EV04      Phys.Scr. T125, 192 (2006)

A.O.Evans, E.S.Paul, A.J.Boston, H.J.Chantler, C.J.Chiara, M.Devlin, A.M.Fletcher, D.B.Fossan, D.R.LaFosse, G.J.Lane, Y.Lee, A.O.Macchiavelli, P.J.Nolan, D.G.Sarantites, J.M.Sears, A.T.Semple, J.F.Smith, K.Starosta, C.Vaman, I.Ragnarsson, A.V.Afanasjev

Magnetic properties of deformed dipole bands in 110, 112Te

NUCLEAR REACTIONS 58Ni(58Ni, 2pα), E=240 MeV; measured Eγ, Iγ, γγ-, (charged particle)γ-coin, DSA. 110Te deduced transitions B(M1).

doi: 10.1088/0031-8949/2006/T125/046
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2006JU01      Phys.Rev. C 73, 044327 (2006)

A.Juodagalvis, I.Ragnarsson, S.Aberg

Cranked Nilsson-Strutinsky vs the spherical shell model: A comparative study of pf-shell nuclei

NUCLEAR STRUCTURE 44,45,46Ti, 47V, 48,49Cr; calculated rotational band energies, configurations, deformation, signature splitting, related features. Comparison of unpaired cranked Nilsson-Strutinsky and spherical shell model approaches.

doi: 10.1103/PhysRevC.73.044327
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