NSR Query Results
Output year order : Descending NSR database version of April 25, 2024. Search: Author = W.B.Walters Found 287 matches. Showing 1 to 100. [Next]2024CO05 Phys.Rev.Lett. 132, 152503 (2024) I.Cox, Z.Y.Xu, R.Grzywacz, W.-J.Ong, B.C.Rasco, N.Kitamura, D.Hoskins, S.Neupane, T.J.Ruland, J.M.Allmond, T.T.King, R.S.Lubna, K.P.Rykaczewski, H.Schatz, B.M.Sherrill, O.B.Tarasov, A.D.Ayangeakaa, H.C.Berg, D.L.Bleuel, G.Cerizza, J.Christie, A.Chester, J.Davis, C.Dembski, A.A.Doetsch, J.G.Duarte, A.Estrade, A.Fijalkowska, T.J.Gray, E.C.Good, K.Haak, S.Hanai, J.T.Harke, C.Harris, K.Hermansen, D.E.M.Hoff, R.Jain, M.Karny, K.Kolos, A.Laminack, S.N.Liddick, B.Longfellow, S.Lyons, M.Madurga, M.J.Mogannam, A.Nowicki, T.H.Ogunbeku, G.Owens-Fryar, M.M.Rajabali, A.L.Richard, E.K.Ronning, G.E.Rose, K.Siegl, M.Singh, A.Spyrou, A.Sweet, A.Tsantiri, W.B.Walters, R.Yokoyama Proton Shell Gaps in N=28 Nuclei from the First Complete Spectroscopy Study with FRIB Decay Station Initiator RADIOACTIVITY 45Cl(β-) [from 9Be(82Se, X), E=165 MeV/nucleon]; measured decay products, Eγ, Iγ, Eβ, Iβ; deduced β-decay strength distribution, the transitioning of neutrons into protons excited across the Z=20 shell gap. Comparison with shell model calculations using SDPF-MU interaction. The Facility for Rare Isotope Beams (FRIB) with the FRIB Decay Station Initiator.
doi: 10.1103/PhysRevLett.132.152503
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
2023CR03 Nucl.Instrum.Methods Phys.Res. A1055, 168525 (2023) B.P.Crider, C.J.Prokop, S.N.Liddick, H.M.Albers, M.Alshudifat, A.D.Ayangeakaa, M.P.Carpenter, J.J.Carroll, J.Chen, C.J.Chiara, A.C.Dombos, S.Go, R.Grzywacz, J.Harker, R.V.F.Janssens, N.Larson, T.Lauritsen, R.Lewis, S.J.Quinn, F.Recchia, D.Seweryniak, A.Spyrou, S.Suchyta, W.B.Walters, S.Zhu New method for level-lifetime measurements with thick scintillators NUCLEAR REACTIONS 9Be(76Ge, X)68Ni/68Zn/69Ni/70Ni, E=140 MeV/nucleon; measured reaction products, Eγ, Iγ, Eβ, Iβ, βγ-coin.; deduced γ-ray energies, level T1/2. Comparison with available data. The National Superconducting Cyclotron Laboratory (NSCL), the coupled cyclotron facility.
doi: 10.1016/j.nima.2023.168525
2022LI54 Phys.Rev. C 106, 044313 (2022) D.Little, A.D.Ayangeakaa, R.V.F.Janssens, S.Zhu, Y.Tsunoda, T.Otsuka, B.A.Brown, M.P.Carpenter, A.Gade, D.Rhodes, C.R.Hoffman, F.G.Kondev, T.Lauritsen, D.Seweryniak, J.Wu, J.Henderson, C.Y.Wu, P.Chowdhury, P.C.Bender, A.M.Forney, W.B.Walters Multistep Coulomb excitation of 64Ni: Shape coexistence and nature of low-spin excitations NUCLEAR REACTIONS 208Pb(64Ni, 64Ni'), E=272 MeV; measured reaction products, time-of-flight difference between the projectile and target recoils as a function of scattering angle, Eγ, Iγ, (particle)γ-coin, Coulomb-excitation yields using GRETINA array with 12 modules of 48 highly-segmented coaxial HPGe crystals for γ detection, and CHICO2 array of 20 position-sensitive parallel-plate avalanche counters for the detection of scattered particles at the ATLAS-ANL facility. Multistep safe Coulomb-excitation. 64Ni; deduced levels, J, π, E2 matrix elements using GOSIA least-squares fitting code, B(E2), spectroscopic electric quadrupole moments, evidence for triple shape coexistence. Comparison with previous experimental results, and with Monte Carlo shell-model (MCSM), and conventional shell-model calculations. NUCLEAR STRUCTURE 64Ni; calculated levels, J, π, B(E2), spectroscopic quadrupole moments, proton and neutron orbital occupancies for 2+ and 0+ states using Monte Carlo shell-model (MCSM), and conventional shell-model calculations with the jj44 and fp effective interactions. Comparison with experimental data.
doi: 10.1103/PhysRevC.106.044313
2021SE17 Phys.Rev. C 104, 024317 (2021) S.Sekal, L.M.Fraile, R.Lica, M.J.G.Borge, W.B.Walters, A.Aprahamian, C.Benchouk, C.Bernards, J.A.Briz, B.Bucher, C.J.Chiara, Z.Dlouhy, I.Gheorghe, D.G.Ghita, P.Hoff, J.Jolie, U.Koster, W.Kurcewicz, H.Mach, N.Marginean, R.Marginean, Z.Meliani, B.Olaizola, V.Paziy, J.M.Regis, M.Rudigier, T.Sava, G.S.Simpson, M.Stanoiu, L.Stroe Low-spin states in 80Ge populated in the β decay of the 80Ga 3- isomer RADIOACTIVITY 80mGa(β-)[from decay of 80Zn produced in U(n, F), E=fast neutrons at the ISOLDE-CERN facility, followed by separation of fission fragments passed using the ISOLDE Resonance Ionization Laser Ion Source (RILIS) and high-resolution magnetic separator]; measured Eγ, Iγ, βγ- and γγ-coin using two HPGe detectors for γ rays and an NE111A organic plastic scintillator for β detection. 80Ge; deduced levels, J, π, β feedings, logft. Comparison with previous experimental results, and with shell-model and IBM calculations. NUCLEAR STRUCTURE 70,72,74,76,78,80,82Ge, 82Se, 84Kr, 86Sr, 88Zr, 90Mo; calculated energies of second 0+ states by shell-model using Antoine code with JUN45 interaction, and NUSHELLX@MSU code with jj44bpn interaction, and IBM-1, IBM-2 models, and comparison with experimental values; Systematics of low-lying positive-parity levels up to 8+.
doi: 10.1103/PhysRevC.104.024317
2020DE09 Phys.Rev. C 101, 034612 (2020) V.V.Desai, A.Pica, W.Loveland, J.S.Barrett, E.A.McCutchan, S.Zhu, A.D.Ayangeakaa, M.P.Carpenter, J.P.Greene, T.Lauritsen, R.V.F.Janssens, B.M.S.Amro, W.B.Walters Multinucleon transfer in the interaction of 977 MeV and 1143 MeV 204Hg with 208Pb NUCLEAR REACTIONS 208Pb(204Hg, X)72Ga/81mRb/85Kr/91Sr/92Sr/97Zr/90Nb/99Mo/93Tc/99Tc/97Ru/103Ru/112Ag/115Cd/117Sb/131I/125Xe/135Xe/140Ba/143Ce/156Sm/154Tb/167Ho/169Lu/180mHf/181Re/182Re/188Re/191Os/188Ir/190Ir/195Pt/192Au/193Au/194Au/196Au/198Au/199Au/200mAu/195mHg/197Hg/203Hg/198Tl/199Tl/200Tl/201Tl/202Tl/200Pb/201Pb/202mPb/203Pb/204Pb/202Bi/203Bi/204Bi/205Bi/206Bi/206Po/208At/209At/210At/211Rn, E=977 MeV; 208Pb(204Hg, X)69Zn/72Zn/82Br/86Y/87Y/91Sr/96Nb/95Tc/96Tc/97Zr/97Ru/99Mo/101Rh/103Ru/105Ru/111In/115Cd/117Sb/120mSb/122Sb/128Sb/132Cs/135mBa/140Ba/143Ce/147Gd/172Er/165Tm/169Lu/171Lu/170Hf/173Hf/180mHf/176Ta/177Ta/178Ta/183Ta/181Re/182Re/188Re/189Re/183Os/185Os/186Ir/188Ir/190Ir/188Pt/191Pt/197mPt/193Au/194Au/196Au/198Au/199Au/200mAu/193mHg/195mHg/197Hg/203Hg/197Tl/199Tl/200Tl/201Tl/202Tl/200Pb/201Pb/202mPb/203Pb/203Bi/204Bi/205Bi/206Bi/206Po/207Po/209At/210At/211Rn, E=1143 MeV; measured Eγ, Iγ, fragment cumulative and independent σ for nuclei produced in multi-nucleon transfer (MNT) reactions using Gammasphere array for off-line γ counting at ANT-ATLAS facility. Comparison with theoretical predictions of GRAZING-F, dinuclear systems (DNS), and improved quantum molecular dynamics (ImQMD) models, and with previous experimental results from MNT reactions: 248Cm(16O, X), (86Kr, X), (129Xe, X), (132Xe, X), (136Xe, X), 197Au(238U, X), 238U(18O, X), (238U, X), 208Pb(18O, X), (64Ni, X), (136Xe, X), 198Pt(136Xe, X). No evidence for production of nuclei near the N=126 shell.
doi: 10.1103/PhysRevC.101.034612
2020MA37 Phys.Rev.Lett. 125, 102502 (2020) N.Marginean, D.Little, Y.Tsunoda, S.Leoni, R.V.F.Janssens, B.Fornal, T.Otsuka, C.Michelagnoli, L.Stan, F.C.L.Crespi, C.Costache, R.Lica, M.Sferrazza, A.Turturica, A.D.Ayangeakaa, K.Auranen, M.Barani, P.C.Bender, S.Bottoni, M.Boromiza, A.Bracco, S.Calinescu, C.M.Campbell, M.P.Carpenter, P.Chowdhury, M.Ciemala, N.Cieplicka-Orynczak, D.Cline, C.Clisu, H.L.Crawford, I.E.Dinescu, J.Dudouet, D.Filipescu, N.Florea, A.M.Forney, S.Fracassetti, A.Gade, I.Gheorghe, A.B.Hayes, I.Harca, J.Henderson, A.Ionescu, L.W.Iskra, M.Jentschel, F.Kandzia, Y.H.Kim, F.G.Kondev, G.Korschinek, U.Koster, Krishichayan, M.Krzysiek, T.Lauritsen, J.Li, R.Marginean, E.A.Maugeri, C.Mihai, R.E.Mihai, A.Mitu, P.Mutti, A.Negret, C.R.Nita, A.Olacel, A.Oprea, S.Pascu, C.Petrone, C.Porzio, D.Rhodes, D.Seweryniak, D.Schumann, C.Sotty, S.M.Stolze, R.Suvaila, S.Toma, S.Ujeniuc, W.B.Walters, C.Y.Wu, J.Wu, S.Zhu, S.Ziliani Shape Coexistence at Zero Spin in 64Ni Driven by the Monopole Tensor Interaction NUCLEAR REACTIONS 62Ni(18O, 16O), E=39 MeV; 65Cu(11B, 12C), E=26 MeV; 63Ni(n, γ), E thermal; measured reaction products, Eγ, Iγ; analyzed available data from multiple experiments. 64Ni; deduced γ-ray energies, J, π, B(E2). Comparison with theoretical calculations.
doi: 10.1103/PhysRevLett.125.102502
2020PA26 Phys.Rev. C 102, 014329 (2020) V.Paziy, L.M.Fraile, H.Mach, B.Olaizola, G.S.Simpson, A.Aprahamian, C.Bernards, J.A.Briz, B.Bucher, C.J.Chiara, Z.Dlouhy, I.Gheorghe, D.Ghita, P.Hoff, J.Jolie, U.Koster, W.Kurcewicz, R.Lica, N.Marginean, R.Marginean, J.-M.Regis, M.Rudigier, T.Sava, M.Stanoiu, L.Stroe, W.B.Walters Fast-timing study of 81Ga from the β decay of 81Zn RADIOACTIVITY 81Zn(β-), (β-n)[from U(p, F), E=1.4 GeV at CERN PS-Booster (PSB) facility, followed by separation of ionized nuclei using the ISOLDE-RILIS]; measured Eγ, Iγ, b-, βγ- and γγ-coin, half-life of 81Zn decay, level half-lives by βγγ(t) fast-timing technique, β-delayed neutron branching ratio or Pn using HPGe and LaBr3 detectors for γ detection and a plastic scintillator for β detection at CERN-ISOLDE. 80,81Ga(β-); measured half-lives of 80Ga and 81Ga decays. 80,81Ga; deduced levels, J, π, Iβ, logft, B(M1), and B(E2). Comparison with large-scale shell model calculations using the NuShellX@MSU and ANTOINE codes with JUN45 and jj44b interactions. Systematics of low-lying levels in 71,73,75,77,79,81Ga, 79Cu, 83As, 85Br, 87Rb. 81Zn; discussed spin, parity and configuration of the ground state.
doi: 10.1103/PhysRevC.102.014329
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
2019AU02 Phys.Lett. B 792, 187 (2019) K.Auranen, D.Seweryniak, M.Albers, A.D.Ayangeakaa, S.Bottoni, M.P.Carpenter, C.J.Chiara, P.Copp, H.M.David, D.T.Doherty, J.Harker, C.R.Hoffman, R.V.F.Janssens, T.L.Khoo, S.A.Kuvin, T.Lauritsen, G.Lotay, A.M.Rogers, C.Scholey, J.Sethi, R.Talwar, W.B.Walters, P.J.Woods, S.Zhu Proton decay of 108I and its significance for the termination of the astrophysical rp-process RADIOACTIVITY 108I(α), (p), 109I(p), 107,108Te(α) [from 54Fe(58Ni, X)108I/109I/108Te/107Te, E=254 MeV]; measured Eα, Iα, Ep, Ip; deduced Q-values, T1/2, mass excesses, branching ratio. Comparison with theoretical calculations.
doi: 10.1016/j.physletb.2019.03.039
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
2019EL08 Phys.Rev. C 100, 034317 (2019) B.Elman, A.Gade, R.V.F.Janssens, A.D.Ayangeakaa, D.Bazin, J.Belarge, P.C.Bender, B.A.Brown, C.M.Campbell, M.P.Carpenter, H.L.Crawford, B.P.Crider, P.Fallon, A.M.Forney, J.Harker, S.N.Liddick, B.Longfellow, E.Lunderberg, C.J.Prokop, J.Sethi, R.Taniuchi, W.B.Walters, D.Weisshaar, S.Zhu Probing the role of proton cross-shell excitations in 70Ni using nucleon knockout reactions NUCLEAR REACTIONS 9Be(71Cu, 70Ni), E=80.2 MeV/nucleon; 9Be(71Ni, 70Ni), E=82.6 MeV/nucleon; 9Be(72Zn, 70Ni), E=76.5 MeV/nucleon, [secondary 71Cu, 71Ni, 71Zn beams from 9Be(76Ge, X), E=130 MeV/nucleon primary reaction at the K500 and K1200 coupled cyclotrons of NSCL-MSU]; measured yields of reaction products, Eγ, Iγ, γγ- and (knockout residues)γ-coin using GRETINA array for γ detection, and CsI(Na) hodoscope array for reaction residues. 70Ni; deduced levels, J, π, configurations. Comparison with shell-model calculations for only the neutron excitations using the jj44pna effective interaction.
doi: 10.1103/PhysRevC.100.034317
2019IS03 Phys.Lett. B 788, 396 (2019) L.W.Iskra, R.Broda, R.V.F.Janssens, M.P.Carpenter, B.Fornal, T.Lauritsen, T.Otsuka, T.Togashi, Y.Tsunoda, W.B.Walters, S.Zhu Revised B(E3) transition rate and structure of the 3 - level in 96Zr NUCLEAR STRUCTURE 96Zr; analyzed available data; deduced reduced value of B(E3) compared to the previous reports; calculated the collectivity of the octupole vibration arises from both proton and neutron excitations involving a large number of orbitals using the Monte Carlo shell-model. NUCLEAR REACTIONS 238U(76Ge, X), (64Ni, X), (48Ca, X), (208Pb, X)96Zr, 208Pb, 198Pt(76Ge, X)96Zr, E not given; measured reaction products, Eγ, Iγ; deduced γ-ray relative intensities, B(E3), branching ratios.
doi: 10.1016/j.physletb.2018.10.069
2018AU04 Phys.Rev.Lett. 121, 182501 (2018) K.Auranen, D.Seweryniak, M.Albers, A.D.Ayangeakaa, S.Bottoni, M.P.Carpenter, C.J.Chiara, P.Copp, H.M.David, D.T.Doherty, J.Harker, C.R.Hoffman, R.V.F.Janssens, T.L.Khoo, S.A.Kuvin, T.Lauritsen, G.Lotay, A.M.Rogers, J.Sethi, C.Scholey, R.Talwar, W.B.Walters, P.J.Woods, S.Zhu Superallowed α Decay to Doubly Magic 100Sn RADIOACTIVITY 108Xe, 104Te(α) [from 54Fe(58Ni, 4n)108Xe, E=245 MeV]; measured decay products, Eα, Iα; deduced α-particles energies, T1/2. A heavy self-conjugate nucleus, comparison with available data.
doi: 10.1103/PhysRevLett.121.182501
2018BR15 Phys.Rev. C 98, 024324 (2018) R.Broda, L.W.Iskra, R.V.F.Janssens, B.A.Brown, B.Fornal, J.Wrzesinski, N.Cieplicka-Orynczak, M.P.Carpenter, C.J.Chiara, C.R.Hoffman, F.G.Kondev, G.J.Lane, T.Lauritsen, Zs.Podolyak, D.Seweryniak, W.B.Walters, S.Zhu Two-neutron and core-excited states in 210Pb: Tracing E collectivity and evidence for a new β-decaying isomer in 210Tl NUCLEAR REACTIONS 208Pb(208Pb, X)210Pb, E=1440 MeV; 208Pb(48Ca, X)210Pb, 208Pb(76Ge, X)210Pb, 208Pb(82Se, X)210Pb, 238U(48Ca, X)210Pb, 238U(208Pb, X)210Pb, E=15-25% above the respective Coulomb barriers; measured Eγ, Iγ, delayed γ spectra, γγ-coin, γ(θ), half-lives of isomers and levels by γγ(t), ratio of observed production yields of anticipated 11+ β--decaying isomer in 210Tl and the 8+ isomer in 210Pb using Gammasphere array at ATLAS-ANL facility. 210Pb; deduced high-spin levels, isomers, J, π, conversion coefficients, multipolarities, configurations, B(E2), B(E3). 210Tl; deduced possible 11+ β- decaying isomer. Comparison with large-scale shell model calculations. NUCLEAR STRUCTURE 210Pb, 210Tl; calculated levels, J, π by large-scale shell model calculations, and compared with experimental data.
doi: 10.1103/PhysRevC.98.024324
2018FO11 Phys.Rev.Lett. 120, 212501 (2018) A.M.Forney, W.B.Walters, C.J.Chiara, R.V.F.Janssens, A.D.Ayangeakaa, J.Sethi, J.Harker, M.Alcorta, M.P.Carpenter, G.Gurdal, C.R.Hoffman, B.P.Kay, F.G.Kondev, T.Lauritsen, C.J.Lister, E.A.McCutchan, A.M.Rogers, D.Seweryniak, I.Stefanescu, S.Zhu Novel ΔJ = 1 Sequence in 78Ge: Possible Evidence for Triaxiality NUCLEAR REACTIONS 238U(76Ge, X)78Ge, E=530 MeV; 198Pt, 208Pb(76Ge, X)78Ge, E=450 MeV; measured reaction products, Eγ, Iγ; deduced energy levels, J, π, B(E2). Comparison with available data and calculations.
doi: 10.1103/PhysRevLett.120.212501
2018PI07 Acta Phys.Pol. B49, 523 (2018) M.Piersa, A.Korgul, L.M.Fraile, J.Benito, E.Adamska, R.Alvarez, A.E.Barzakh, G.Benzoni, T.Berry, M.J.G.Borge, M.Carmona, K.Chrysalidis, G.Correia, C.Costache, T.Day Goodacre, D.V.Fedorov, V.N.Fedosseev, G.Fernandez-Martinez, M.Fila, D.Galaviz, R.Grzywacz, C.Henrich, A.Illana, Z.Janas, K.Johnston, V.Karanyonchev, M.Kicinska-Habior, R.Lica, M.Madurga, I.Marroquin, B.Marsh, C.Martinez, C.Mazzocchi, K.Miernik, R.Mihai, B.Olaizola, S.Paulaskalas, J.-M.Regis, S.Rothe, V.Sanchez-Tembleque, G.Simpson, Ch.Sotty, L.Stan, M.Stanoiu, M.Stryjczyk, A.Turturica, J.M.Udias, V.Vedia, A.Villa, W.B.Walters Investigation of Low-lying States in 133Sn Populated in the β Decay of 133In Using Isomer-selective Laser Ionization RADIOACTIVITY 133In(β-)[from ISOLDE facility, where 1.4 GeV protons are directed on uranium carbide target]; measured Eβ, Iβ, β-gated γ-ray spectra using isomer selective ionization of ISOLDE facility LDE RILIS with clear distinction between decaying gs (9/2+) and isomer (1/2-); deduced, identified γ-rays following 133In to 133Sn as βγγ coin with 513 keV transition; deduced levels, J, π participating in 133In β-decay; deduced consistency with previous results on low-lying structure in 133Sn.
doi: 10.5506/aphyspolb.49.523
2018ST18 Phys.Rev. C 98, 064326 (2018) M.Stryjczyk, Y.Tsunoda, I.G.Darby, H.De Witte, J.Diriken, D.V.Fedorov, V.N.Fedosseev, L.M.Fraile, M.Huyse, U.Koster, B.A.Marsh, T.Otsuka, D.Pauwels, L.Popescu, D.Radulov, M.D.Seliverstov, A.M.Sjodin, P.Van den Bergh, P.Van Duppen, M.Venhart, W.B.Walters, K.Wimmer β-decay study of the 66Mn - 66Fe - 66Co - 66Ni decay chain RADIOACTIVITY 66Mn(β-), (β-n)[from U(p, F), Mn beam purified by laser resonance ionization and mass separation]; 66Fe(β-)[from 66Mn β- decay]; 66Co(β-)[from 66Fe β- decay]; measured Eβ, Iβ, Eγ, Iγ, half-lives of β-decaying 66Mn, 66Fe, 66Co, γγ- and βγγ-coin, half-lives of isomers in 65Fe, 66Co by γ(t) using plastic scintillators for β detection and MiniBall cluster Ge detectors for γ detection at ISOLDE-CERN. 65,66Fe, 66Co, 66Ni; deduced levels, isomers, J, π, β feedings, logft, B(GT) values, %β-n value for the decay of 66Mn. Comparison with Monte Carlo shell model calculations. NUCLEAR STRUCTURE 66Mn, 66Fe, 66Co, 66Ni; calculated average proton and neutron occupation numbers for selected low-lying positive-parity states, potential energy surface (PES) in (Q0, Q2) plane, levels, J, π, B(M1), B(E2) using Monte Carlo Shell model with the A3DA interactions. Comparison with experimental data.
doi: 10.1103/PhysRevC.98.064326
2017AM01 Phys.Rev. C 95, 014330 (2017) B.M.S.Amro, C.J.Lister, E.A.McCutchan, W.Loveland, P.Chowdhury, S.Zhu, A.D.Ayangeakaa, J.S.Barrett, M.P.Carpenter, C.J.Chiara, J.P.Greene, J.L.Harker, R.V.F.Janssens, T.Lauritsen, A.A.Sonzogni, W.B.Walters, R.Yanez γ-ray spectroscopy of 209Tl NUCLEAR REACTIONS 208Pb(136Xe, X)209Tl, E=785 MeV; measured Eγ, Iγ, γΓ-coin, delayed γ, half-lives of isomers using Gammasphere array at ATLAS-ANL facility. 209Tl; deduced levels, J, π, internal conversion coefficients, multipolarities, B(E2), configurations.
doi: 10.1103/PhysRevC.95.014330
2017BO23 Phys.Lett. B 775, 271 (2017) S.Bottoni, S.Zhu, R.V.F.Janssens, M.P.Carpenter, Y.Tsunoda, T.Otsuka, A.O.Macchiavelli, D.Cline, C.Y.Wu, A.D.Ayangeakaa, B.Bucher, M.Q.Buckner, C.M.Campbell, C.J.Chiara, H.L.Crawford, M.Cromaz, H.M.David, P.Fallon, A.Gade, J.P.Greene, J.Harker, A.B.Hayes, C.R.Hoffman, B.P.Kay, A.Korichi, T.Lauritsen, J.Sethi, D.Seweryniak, W.B.Walters, D.Weisshaar, A.Wiens Nucleon correlations and the structure of 7130Zn41 NUCLEAR REACTIONS 70Zn(48Ca, 47Ca)71Zn, E=170 MeV; 197Au(70Zn, X)71Zn, E=430 MeV; measured reaction products, Eγ, Iγ; deduced γ-ray energies, decay scheme, J, π, modest oblate deformation. Comparison with Monte-Carlo shell-model calculations.
doi: 10.1016/j.physletb.2017.11.003
2017BR08 Phys.Rev. C 95, 064308 (2017) R.Broda, R.V.F.Janssens, L.W.Iskra, J.Wrzesinski, B.Fornal, M.P.Carpenter, C.J.Chiara, N.Cieplicka-Orynczak, C.R.Hoffman, F.G.Kondev, W.Krolas, T.Lauritsen, Zs.Podolyak, D.Seweryniak, C.M.Shand, B.Szpak, W.B.Walters, S.Zhu, B.A.Brown Doubly magic 208Pb: High-spin states, isomers, and E3 collectivity in the yrast decay NUCLEAR REACTIONS 208Pb(48Ca, X), E=430 MeV; 208Pb(208Pb, X), E=1440 MeV; measured Eγ, Iγ, γγ-coin, γγ(θ), half-lives of isomers by γγ(t), in-beam and off-beam Iγ using Gammasphere array at ATLAS-ANL facility. 208Pb; deduced high-spin levels, new isomers, J, π, total electron-conversion coefficients from intensity balances, multipolarities, mixing ratios, B(E1), B(E2), B(E3), B(M1), B(M2), 1p-1h yrast and near-yrast states and their rotational interpretation, 2p-2h states. Comparison with shell-model calculations.
doi: 10.1103/PhysRevC.95.064308
2017EL04 Phys.Rev. C 96, 044332 (2017) B.Elman, A.Gade, D.Weisshaar, D.Barofsky, D.Bazin, P.C.Bender, M.Bowry, M.Hjorth-Jensen, K.W.Kemper, S.Lipschutz, E.Lunderberg, N.Sachmpazidi, N.Terpstra, W.B.Walters, A.Westerberg, S.J.Williams, K.Wimmer Quadrupole collectivity beyond N = 50 in neutron-rich Se and Kr isotopes NUCLEAR REACTIONS 209Bi(88Kr, 88Kr'), E=67 MeV/nucleon; 209Bi(90Kr, 90Kr'), E=68 MeV/nucleon; 209Bi(86Se, 86Se'), E=79 MeV/nucleon, [secondary 88,90Kr, 86Se beams from 9Be(96Zr, X), E=120 MeV/nucleon using A1900 fragment separator at the NSCL-MSU Cyclotron Laboratory]; measured reaction products and particle identification plot, Doppler-corrected Eγ, Iγ, (particle)γ-coin, σ, using the CAESAR array of 192 CsI(Na) scintillators. 88,90Kr, 86Se; deduced levels, J, π, Coulomb excitation yields, B(E2) for excited 2+ states. Comparison with shell-model calculations. 88,90Kr, 86Se; calculated shell-model occupations of the proton and neutron orbitals for the observed levels. Systematics of B(E2) values for the first 2+ states in N=36-60 Kr and Se nuclei.
doi: 10.1103/PhysRevC.96.044332
2017VE05 Phys.Rev. C 96, 034311 (2017) V.Vedia, V.Paziy, L.M.Fraile, H.Mach, W.B.Walters, A.Aprahamian, C.Bernards, J.A.Briz, B.Bucher, C.J.Chiara, Z.Dlouhy, I.Gheorghe, D.Ghita, P.Hoff, J.Jolie, U.Koster, W.Kurcewicz, R.Lica, N.Marginean, R.Marginean, B.Olaizola, J.-M.Regis, M.Rudigier, T.Sava, G.S.Simpson, M.Stanoiu, L.Stroe Search for the 73Ga ground-state doublet splitting in the β decay of 73Zn RADIOACTIVITY 73Zn(β-)[from U(p, F), E=1.4 GeV]; measured Eγ, Iγ, βγ- and γγ-coin, half-life of 73Zn from γ-decay curves, level half-lives by fast-timing βγγ(t) technique using Resonance Ionization Laser Ion Source (RILIS) and magnetic high-resolution mass separator (HRS) at ISOLDE-CERN. 73Ga; deduced levels, ground state doublet, J, π, β feedings, logft, B(M1), B(E2). 73Zn(IT); measured Eγ, half-life of the isomer; deduced no evidence for a 42-keV transition from the isomer. Comparison with previous measurements, and with shell-model calculations. Systematics of level structure in 71,73,75Ga.
doi: 10.1103/PhysRevC.96.034311
2017WE06 Phys.Lett. B 771, 119 (2017) T.Welsh, W.Loveland, R.Yanez, J.S.Barrett, E.A.McCutchan, A.A.Sonzogni, T.Johnson, S.Zhu, J.P.Greene, A.D.Ayangeakaa, M.P.Carpenter, T.Lauritsen, J.L.Harker, W.B.Walters, B.M.S.Amro, P.Copp Modeling multi-nucleon transfer in symmetric collisions of massive nuclei NUCLEAR REACTIONS 198Pt(204Hg, X), E=1360 MeV; measured reaction products, Eγ, Iγ; deduced fragment yields, σ. Comparison with GRAZING and DNS models.
doi: 10.1016/j.physletb.2017.05.044
2016CR05 Phys.Lett. B 763, 108 (2016) B.P.Crider, C.J.Prokop, S.N.Liddick, M.Al-Shudifat, A.D.Ayangeakaa, M.P.Carpenter, J.J.Carroll, J.Chen, C.J.Chiara, H.M.David, A.C.Dombos, S.Go, R.Grzywacz, J.Harker, R.V.F.Janssens, N.Larson, T.Lauritsen, R.Lewis, S.J.Quinn, F.Recchia, A.Spyrou, S.Suchyta, W.B.Walters, S.Zhu Shape coexistence from lifetime and branching-ratio measurements in 68, 70Ni RADIOACTIVITY 70Co, 68Fe, 68Co(β-) [from 9Be(76Ge, X)70Co/68Fe]; measured reaction products, Eγ, Iγ; deduced energy levels, J, π, T1/2, branching ratios, B(E2).
doi: 10.1016/j.physletb.2016.10.020
2016IS03 Phys.Rev. C 93, 014303 (2016) L.W.Iskra, R.Broda, R.V.F.Janssens, C.J.Chiara, M.P.Carpenter, B.Fornal, N.Hoteling, F.G.Kondev, W.Krolas, T.Lauritsen, T.Pawlat, D.Seweryniak, I.Stefanescu, W.B.Walters, J.Wrzesinski, S.Zhu Shell-model states with seniority ν = 3, 5, and 7 in odd-A neutron-rich Sn isotopes NUCLEAR REACTIONS 208Pb, 238U(48Ca, X), E=330 MeV; 238U(64Ni, F), E=430 MeV; measured Eγ, Iγ, γγ-coin, delayed γγ-coin, isomer half-lives using Gammasphere array at ATLAS-ANL facility. 115,117,119,121,123,125,127,129Sn; measured yields of reaction products. 119,121,123,125Sn; deduced high-spin levels, J, π, multipolarity, high-seniority states, isomers, B(E1), B(E2), B(M2), B(E3). Comparison with shell model calculations with jj55pn interactions. Systematics of yrast levels and B(Eλ) values for 117,119,121,123,125,127,129Sn. Systematics of B(E2) values for 10+ to 8+ and 19/2+ to 15/2+ isomeric transitions in A=116-130 Sn isotopes. NUCLEAR STRUCTURE 119,121,123,125,127,129Sn; calculated levels, J, π using shell model with jj55pn interaction. Comparison with experimental spectra.
doi: 10.1103/PhysRevC.93.014303
2016KO15 Phys.Rev.Lett. 116, 122502 (2016) K.Kolos, D.Miller, R.Grzywacz, H.Iwasaki, M.Al-Shudifat, D.Bazin, C.R.Bingham, T.Braunroth, G.Cerizza, A.Gade, A.Lemasson, S.N.Liddick, M.Madurga, C.Morse, M.Portillo, M.M.Rajabali, F.Recchia, L.L.Riedinger, P.Voss, W.B.Walters, D.Weisshaar, K.Whitmore, K.Wimmer, J.A.Tostevin Direct Lifetime Measurements of the Excited States in 72Ni NUCLEAR REACTIONS 9Be(73Cu, p)72Ni, E=102MeV/nucleon; measured reaction products, Eγ, Iγ; deduced energy levels, J, π, lifetimes, B(E2) values. Comparison with nuclear shell model calculations.
doi: 10.1103/PhysRevLett.116.122502
2016MI02 Phys.Rev. C 93, 014306 (2016) A.J.Mitchell, C.J.Lister, E.A.McCutchan, M.Albers, A.D.Ayangeakaa, P.F.Bertone, M.P.Carpenter, C.J.Chiara, P.Chowdhury, J.A.Clark, P.Copp, H.M.David, A.Y.Deo, B.DiGiovine, N.D'Olympia, R.Dungan, R.D.Harding, J.Harker, S.S.Hota, R.V.F.Janssens, F.G.Kondev, S.H.Liu, A.V.Ramayya, J.Rissanen, G.Savard, D.Seweryniak, R.Shearman, A.A.Sonzogni, S.L.Tabor, W.B.Walters, E.Wang, S.Zhu ψ-soft 146Ba and the role of nonaxial shapes at N ≈ 90 RADIOACTIVITY 146Cs(β-)[from 252Cf SF and mass separation at CARIBU-ANL facility]; measured Eγ, Iγ, βγ-, βγγ-coin using SATURN detection system at ANL. 146Ba; deduced levels, J, π, limits of β- branching ratios. Level systematics in even-A N=90 isotones with Z=56-68, and those of g.s., β- and γ-bands in 146Ba, 148Ce, 150Nd. Investigation of nuclear shape transitions. Comparison with interacting boson approximation (IBA) model predictions.
doi: 10.1103/PhysRevC.93.014306
2015BA20 Phys.Rev. C 91, 064615 (2015) J.S.Barrett, W.Loveland, R.Yanez, S.Zhu, A.D.Ayangeakaa, M.P.Carpenter, J.P.Greene, R.V.F.Janssens, T.Lauritsen, E.A.McCutchan, A.A.Sonzogni, C.J.Chiara, J.L.Harker, W.B.Walters 136Xe+208Pb reaction: A test of models of multinucleon transfer reactions NUCLEAR REACTIONS 208Pb(136Xe, X), E=85 MeV; measured Eγ, Iγ, γγ-coin using Gammasphere at ATLAS-ANL facility, σ for projectile-like fragments (PLFs) and target-like fragments (TLFs) by off-line γ-ray spectroscopy for radioactive decay measurements (RD), prompt γ decays recorded during the beam burst (IB), and delayed γ decays recorded between the beam bursts (OB). 116,118Cd, 119,121In, 118,120,122,123,124,126Sn, 119,121,123,125,126,127,128,130Sb, 124,126,128,130,131,132,134Te, 127,128,129,130,131,132,133,135,136I, 128,130,132Xe, 133,134,135,136,137,138Xe, 131,132,133,134,136,137,139,141Cs, 130Ba, 132,134,136,138,139,140,141,142,143Ba, 132,135,136,137,139,140,143La, 136,138,139,140,141,142,143,144,145,146Ce, 139,141,142Pr, 140,142,143,144,145,146,147,148,149Nd, 142,143,145,147,149Pm, 145,146,147,148,149,150,151,152,154Sm, 147,149,151Eu, 152,154,156Gd, 156,158,160,162,164Dy, 160,161Er, 176Yb, 176,178,180,181,182Hf, 179,181Ta, 176,180,182,184,186,187W, 179,185,187Re, 186,188,190,191,192,194,197Os, 188,190,192Ir, 190,191,192,194,196,197,198,200,201,202Pt, 191,192,193,194,196,198,199Au, 194,196,198,200,202,203,204,205,206,208Hg, 196,197,198,199,201,202,203,204,205,206,207Tl, 198,201,202,203,204,206,207,208,209,210,211Pb, 199,201,202,203,204,205,206,207,209,211Bi, 202,204,205,206,207,208,209,210,212,213,214Po, 207,208,209,210,211,213At, 210,211,212,213,214,215,216,218Rn, 211,212,213,215,216Fr, 214Ra; deduced projectile-like fragment cumulative and independent production yields. Comparison with predictions of GRAZING model, and those of Zagrebaev and Greiner model using a quantitative metric. Discussed correlations between TLF and PLF yields.
doi: 10.1103/PhysRevC.91.064615
2015CH25 Phys.Rev. C 91, 044309 (2015) C.J.Chiara, D.Weisshaar, R.V.F.Janssens, Y.Tsunoda, T.Otsuka, J.L.Harker, W.B.Walters, F.Recchia, M.Albers, M.Alcorta, V.M.Bader, T.Baugher, D.Bazin, J.S.Berryman, P.F.Bertone, C.M.Campbell, M.P.Carpenter, J.Chen, H.L.Crawford, H.M.David, D.T.Doherty, A.Gade, C.R.Hoffman, M.Honma, F.G.Kondev, A.Korichi, C.Langer, N.Larson, T.Lauritsen, S.N.Liddick, E.Lunderberg, A.O.Macchiavelli, S.Noji, C.Prokop, A.M.Rogers, D.Seweryniak, N.Shimizu, S.R.Stroberg, S.Suchyta, Y.Utsuno, S.J.Williams, K.Wimmer, S.Zhu Identification of deformed intruder states in semi-magic 70Ni NUCLEAR REACTIONS 208Pb(70Zn, X)70Ni, E=440 MeV; measured Eγ, Iγ, prompt- and delayed-γ spectra, γγ-coin, γγ(θ) using Gammasphere array at ATLAS-ANL facility. 9Be(82Se, X)70Ni, E=140 MeV/nucleon; measured Eγ, Iγ, (70Ni)γ-, γγ-coin, prompt and delayed γ rays using S800 spectrograph, GRETINA and CsI(Na) arrays at NSCL-MSU facility. 70Ni; deduced levels, J, π. Comparison with Monte Carlo shell-model calculations. NUCLEAR STRUCTURE 68,70Ni, 92Mo; calculated levels, J, π, potential-energy surface contours in (Q2, Q4) plane. Shell-model using jj44bpn, jj44pna, JUN45, and JUN45 effective interactions, and Monte Carlo shell-model with A3DA interaction. Comparison with experimental data.
doi: 10.1103/PhysRevC.91.044309
2015FL01 Phys.Rev. C 91, 034310 (2015) F.Flavigny, D.Pauwels, D.Radulov, I.J.Darby, H.De Witte, J.Diriken, D.V.Fedorov, V.N.Fedosseev, L.M.Fraile, M.Huyse, V.S.Ivanov, U.Koster, B.A.Marsh, T.Otsuka, L.Popescu, R.Raabe, M.D.Seliverstov, N.Shimizu, A.M.Sjodin, Y.Tsunoda, P.Van den Bergh, P.Van Duppen, J.Van de Walle, M.Venhart, W.B.Walters, K.Wimmer Characterization of the low-lying 0+ AND 2+ states in 68Ni via β decay of the low-spin 68Co isomer RADIOACTIVITY 68Co(β-), (β-n)[from 68Mn -> 68Fe -> 68Co decay chain, 68Mn from 238U(p, F), E=1 GeV]; measured Eγ, Iγ, βγ-, γγ-coin, half-life of first excited 0+ state by βγ(t) using RILIS and Miniball array at ISOLDE-CERN facility. 68Ni; deduced levels, J, π, β feedings, logft, E0 decays, delayed neutron emission probability Pn, B(E2), configuration. Comparison with previous results, and with Monte Carlo shell model (MCSM) calculations. 67,68Fe, 67Co, 68Ga, 136I(β-); detected γ rays. NUCLEAR STRUCTURE 68Ni; calculated Potential energy surfaces in (Q0, Q2) plane for the ground state and first 2+ state. Large-scale Monte Carlo shell model calculations. Comparison with experimental data.
doi: 10.1103/PhysRevC.91.034310
2015IS02 Acta Phys.Pol. B46, 651 (2015) L.W.Iskra, R.Broda, R.V.F.Janssens, J.Wrzesinski, C.J.Chiara, M.P.Carpenter, B.Fornal, N.Hoteling, F.G.Kondev, W.Krolas, T.Lauritsen, T.Pawlat, D.Seweryniak, I.Stefanescu, W.B.Walters, S.Zhu E2 Transition Probabilities for Decays of Isomers Observed in Neutron-rich Odd Sn Isotopes NUCLEAR REACTIONS 208Pb, 238U(48Ca, X), 238U(64Ni, X)116Sn/118Sn/120Sn/122Sn/124Sn/126Sn/128Sn/130Sn, E=6.7-6.9 MeV/nucleon; measured reaction products, Eγ, Iγ; deduced high-spin states energy levels, T1/2, B(E2).
doi: 10.5506/APhysPolB.46.651
2015LI33 Phys.Rev. C 92, 024319 (2015); Erratum Phys.Rev. C 94, 069904 (2016) S.N.Liddick, W.B.Walters, C.J.Chiara, R.V.F.Janssens, B.Abromeit, A.Ayres, A.Bey, C.R.Bingham, M.P.Carpenter, L.Cartegni, J.Chen, H.L.Crawford, I.G.Darby, R.Grzywacz, J.Harker, C.R.Hoffman, S.Ilyushkin, F.G.Kondev, N.Larson, M.Madurga, D.Miller, S.Padgett, S.V.Paulauskas, M.M.Rajabali, K.Rykaczewski, D.Seweryniak, S.Suchyta, S.Zhu Analogous intruder behavior near Ni, Sn, and Pb isotopes RADIOACTIVITY 69Fe, 69Co, 69Ni(β-)[from 9Be(78Kr, X), E=140 MeV/nucleon]; measured Eγ, Iγ, (ion)γ- and βγ- correlated events, half-lives of ground states of 69Co, 69Fe, and half-life of an isomer in 69Co, absolute intensities of γ rays from the decay of directly produced 69Co and that from the decay of 69Fe using BCS system and SEGA array at NSCL-MSU facility. 69Cu, 69Co; deduced levels in 69Cu, and isomer in 69Co, J, π, intruder configuration; identified and discussed proton particle-hole intruder states originating from excitations across Z=28. 68Fe, 68Co(β-); observed γ. NUCLEAR REACTIONS 208Pb(70Zn, X)71Cu, E=440 MeV; measured Eγ, Iγ, γγ-coin using Gammasphere array at ATLAS-ANL facility. 71Cu; deduced high-spin levels, J, π, band; discussed systematics of level structure and proton particle-hole intruder states in 67,69,71Cu.
doi: 10.1103/PhysRevC.92.024319
2015PR10 Phys.Rev. C 92, 061302 (2015) C.J.Prokop, B.P.Crider, S.N.Liddick, A.D.Ayangeakaa, M.P.Carpenter, J.J.Carroll, J.Chen, C.J.Chiara, H.M.David, A.C.Dombos, S.Go, J.Harker, R.V.F.Janssens, N.Larson, T.Lauritsen, R.Lewis, S.J.Quinn, F.Recchia, D.Seweryniak, A.Spyrou, S.Suchyta, W.B.Walters, S.Zhu New low-energy 0+ state and shape coexistence in 70Ni RADIOACTIVITY 70,70mCo(β-)[from 9Be(76Ge, X), E=130 MeV/nucleon using A1900 fragment separator at NSCL-MSU]; measured Eγ, Iγ, βγγ-, γγ-coin, level half-life by βγ(t) using SeGA array and silicon PIN detectors. 70Ni; deduced levels, J, π, energy and half-life of excited (0+) state, configuration. Comparison with Monte Carlo shell-model calculations with A3DA interaction. 68Co, 69Ni, 70Zn; observed γ rays from decay of contaminants.
doi: 10.1103/PhysRevC.92.061302
2014IS04 Phys.Rev. C 89, 044324 (2014) L.W.Iskra, R.Broda, R.V.F.Janssens, J.Wrzesinski, B.Szpak, C.J.Chiara, M.P.Carpenter, B.Fornal, N.Hoteling, F.G.Kondev, W.Krolas, T.Lauritsen, T.Pawlat, D.Seweryniak, I.Stefanescu, W.B.Walters, S.Zhu Higher-seniority excitations in even neutron-rich Sn isotopes NUCLEAR REACTIONS 208Pb, 238U(48Ca, X), E=330 MeV; 238U(64Ni, X), E=430 MeV; measured yields of fusion fission Te and complementary Sm reaction products, distribution of number of evaporated neutrons, Eγ, Iγ, γγ-coin, delayed γγ-coin, isomer half-lives using Gammasphere array at ATLAS-ANL facility. Identification of isotopes by prompt and delayed cross coincidences with γ rays from complementary A=146-156 Sm isotopes. 118,120,122,124,126,128Sn; deduced high-spin levels, J, π, multipolarity, high-seniority states, isomers, B(E1), B(E2), B(E3). Comparison with shell model calculations with jj55pn interactions for 122,124,126,128,130Sn nuclides. Systematics of yrast levels and B(Eλ) for A=116-132 even-even Sn isotopes.
doi: 10.1103/PhysRevC.89.044324
2014LI32 Phys.Rev. C 90, 014320 (2014) R.Lica, N.Marginean, D.G.Ghita, H.Mach, L.M.Fraile, G.S.Simpson, A.Aprahamian, C.Bernards, J.A.Briz, B.Bucher, C.J.Chiara, Z.Dlouhy, I.Gheorghe, P.Hoff, J.Jolie, U.Koster, W.Kurcewicz, R.Marginean, B.Olaizola, V.Paziy, J.M.Regis, M.Rudigier, T.Sava, M.Stanoiu, L.Stroe, W.B.Walters Low-lying isomeric states in 80Ga from the β- decay of 80Zn RADIOACTIVITY 80Zn(β-)[from U(p, X), E=1.4 GeV]; measured Eγ, Iγ, γγ-, βγ-coin, half-life of 708-keV level in 80Zn by βγγ(t) at ISOLDE-CERN facility. 80Ga; deduced levels, ordering of the ground state and long-lived isomer, J, π, conversion coefficient, multipolarities, β feedings, logft, reduced transition probabilities. Comparison with shell model calculations using jj44bpn and JUN45 interactions.
doi: 10.1103/PhysRevC.90.014320
2014MU03 Phys.Rev. C 89, 044309 (2014) S.Muto, N.J.Stone, C.R.Bingham, J.R.Stone, P.M.Walker, G.Audi, C.Gaulard, U.Koster, J.Nikolov, K.Nishimura, T.Ohtsubo, Z.Podolyak, L.Risegari, G.S.Simpson, M.Veskovic, W.B.Walters Magnetic properties of 177Hf and 180Hf in the strong-coupling deformed model NUCLEAR REACTIONS Ta, W(p, X), E=1.4 GeV; measured Eγ, Iγ, γ(θ, temp), resonance, magnetic dipole moment of 37/2- isomer in 177Hf and 8- isomer in 180Hf using NICOLE on-line low-temperature nuclear orientation system and NMR at ISOLDE-CERN facility. 177,180Hf; deduced high-spin levels, multipolarity, mixing ratio, (gK-gR)/Q0. Comparison with previous experimental results. NUCLEAR MOMENTS 177,180Hf; measured magnetic moments of high-spin K-isomers by on-line low-temperature nuclear orientation combined with NMR using NICOLE system at ISOLDE-CERN facility. Discussed dependence of gR parameter upon the quasiproton and quasineutron structure of high-K isomeric states in this mass region.
doi: 10.1103/PhysRevC.89.044309
2014SU07 Phys.Rev. C 89, 034317 (2014) S.Suchyta, S.N.Liddick, C.J.Chiara, W.B.Walters, M.P.Carpenter, H.L.Crawford, G.F.Grinyer, G.Gurdal, A.Klose, E.A.McCutchan, J.Pereira, S.Zhu β decay of 61, 63V and low-energy level schemes of 61, 63Cr RADIOACTIVITY 61,63V(β-), (β-n)[from 9Be(76Ge, X), E=130 MeV/nucleon]; measured Eγ, Iγ, γγ-, (fragment)γ-coin, I(β-), half-lives of 61,63V ground states using A1900 fragment separator, Beta Counting System (BCS) and Segmented Ge Array (SeGA) at NSCL-MSU facility. 61,63Cr; deduced levels, J, π, %β-n, internal-conversion coefficient, multipolarity, configurations. Comparison with shell-model calculations. NUCLEAR STRUCTURE 55,57,59,61Cr; calculated levels, J, π, configuration amplitudes using shell-model with GXPF1A and KB3G interactions. Comparison with experimental data.
doi: 10.1103/PhysRevC.89.034317
2014SU11 Phys.Rev. C 89, 067303 (2014) S.Suchyta, S.N.Liddick, C.J.Chiara, W.B.Walters, M.P.Carpenter, H.L.Crawford, G.F.Grinyer, G.Gurdal, A.Klose, E.A.McCutchan, J.Pereira, S.Zhu β and isomeric decay of 64V RADIOACTIVITY 64V(β-)[from 9Be(76Ge, X), E=130 MeV/nucleon]; measured Eγ, βγ-, (64V)γ-coin, half-life of 64V g.s. using A1900 fragment separator and SeGA array at NSCL-MSU facility. 64Cr; deduced energy of first 2+ level. Systematics of first 2+ and 4+ states in A=54-64 even-even Cr nuclei. NUCLEAR REACTIONS 9Be(76Ge, X), E=130 MeV/nucleon; measured yields of reaction products, delayed Eγ. 64V; deduced isomer and its half-life.
doi: 10.1103/PhysRevC.89.067303
2013BA57 Phys.Rev. C 88, 051301 (2013) V.M.Bader, A.Gade, D.Weisshaar, B.A.Brown, T.Baugher, D.Bazin, J.S.Berryman, A.Ekstrom, M.Hjorth-Jensen, S.R.Stroberg, W.B.Walters, K.Wimmer, R.Winkler Quadrupole collectivity in neutron-deficient Sn nuclei: 104Sn and the role of proton excitations NUCLEAR REACTIONS 197Au(104Sn, 104Sn'), (102Cd, 102Cd'), [102Cd, 104Sn secondary beams from 9Be(124Xe, X), E=140 MeV/nucleon primary reaction], E=67 MeV/nucleon for 104Sn and 64 MeV/nucleon for 102Cd; measured scattered particle spectra, Eγ, Iγ, (particle)γ-coin using A1900 fragment separator, Si p-i-n detector and TOF for particles and CAESAR array of scintillation detectors for γ rays at NSCL-MSU facility. 104Sn; deduced level, B(E2) for first 2+ state relative to that for 102Cd. Comparison with previous experimental results, and with large-scale shell model calculations. Enhanced quadrupole collectivity. Systematics of B(E2) values for A=104 to 130 even-A Sn nuclei.
doi: 10.1103/PhysRevC.88.051301
2013CH13 Acta Phys.Pol. B44, 371 (2013) C.J.Chiara, W.B.Walters, R.V.F.Janssens, R.Broda, M.Albers, M.Alcorta, P.F.Bertone, M.P.Carpenter, C.R.Hoffman, T.Lauritsen, A.M.Rogers, D.Seweryniak, S.Zhu, F.G.Kondev, B.Fornal, W.Krolas, J.Wrzesinski, N.Larson, S.N.Liddick, C.Prokop, S.Suchyta, H.M.David, D.T.Doherty Search for Intruder States in 68Ni and 67Co NUCLEAR REACTIONS 238U, 208Pb, 197Au(70Zn, X)68Ni/67Co, E=440 MeV; measured reaction products, Eγ, Iγ, γ-γ-coin.; deduced level scheme, J, π, lack of evidence for intruder states.
doi: 10.5506/APhysPolB.44.371
2013IS04 Acta Phys.Pol. B44, 395 (2013) L.W.Iskra, R.Broda, J.Wrzesinski, M.P.Carpenter, C.J.Chiara, B.Fornal, N.Hoteling, R.V.F.Janssens, F.G.Kondev, W.Krolas, T.Lauritsen, T.Pawlat, D.Seweryniak, I.Stefanescu, W.B.Walters, S.Zhu High-seniority Excitations in Even Neutron-rich Sn Isotopes Populated in Fusion-Fission Reactions NUCLEAR REACTIONS 208Pb, 238U(48Ca, X), E=330 MeV; 238U(64Ni, X), E=430 MeV; measured fusion fission reaction products, Eγ, Iγ, γ-γ-coin. 118,119,120,121,122,123,124,125,126,128Sn; deduced level energies, J, π, high-spin states, long-lived isomers.
doi: 10.5506/APhysPolB.44.395
2013RA17 Phys.Rev. C 88, 014307 (2013) D.Radulov, C.J.Chiara, I.G.Darby, H.De Witte, J.Diriken, D.V.Fedorov, V.N.Fedosseev, L.M.Fraile, M.Huyse, U.Koster, B.A.Marsh, D.Pauwels, L.Popescu, M.D.Seliverstov, A.M.Sjodin, P.Van den Bergh, P.Van Duppen, M.Venhart, W.B.Walters, K.Wimmer β decay of 61Mn to levels in 61Fe RADIOACTIVITY 61Mn(β-)[from 238U(p, F), E=1.4 GeV]; measured Eγ, Iγ, γγ-, βγ-coin, βγ(t), T1/2 of 61Mn g.s., upper limit of P(n) to first 2+ state in 60Fe at ISOLDE, CERN facility. Laser ionization and mass separation of 61Mn beam. 61Fe; deduced levels, J, π, β feedings, logft. Comparison with shell-model calculations. Systematics of ground and first excited states in 24,26,28,30,32,34,36Mn. NUCLEAR STRUCTURE 59,61Fe; calculated levels J, π using shell model with GXPF1A and pf(g0) interactions. Comparison with experimental data.
doi: 10.1103/PhysRevC.88.014307
2013RE18 Phys.Rev. C 88, 041302 (2013) F.Recchia, C.J.Chiara, R.V.F.Janssens, D.Weisshaar, A.Gade, W.B.Walters, M.Albers, M.Alcorta, V.M.Bader, T.Baugher, D.Bazin, J.S.Berryman, P.F.Bertone, B.A.Brown, C.M.Campbell, M.P.Carpenter, J.Chen, H.L.Crawford, H.M.David, D.T.Doherty, C.R.Hoffman, F.G.Kondev, A.Korichi, C.Langer, N.Larson, T.Lauritsen, S.N.Liddick, E.Lunderberg, A.O.Macchiavelli, S.Noji, C.Prokop, A.M.Rogers, D.Seweryniak, S.R.Stroberg, S.Suchyta, S.Williams, K.Wimmer, S.Zhu Configuration mixing and relative transition rates between low-spin states in 68Ni NUCLEAR REACTIONS 208Pb(70Zn, X)68Ni, E=440 MeV; measured Eγ, Iγ, (68Ni)γ-, γγ-coin, prompt and delayed γ rays, level half-life using Gammasphere array at ATLAS-ANL facility. 9Be(70Ni, X)68Ni, E=75 MeV/nucleon, [secondary 70Ni beam from 9Be(82Se, X), E=140 MeV/nucleon primary reaction]; measured Eγ, Iγ, γγ-coin, prompt and delayed γ rays, level half-life using S800 spectrograph, GRETINA and CsI(Na) arrays at NSCL-MSU facility. 68Ni; deduced levels, J, π, B(E2) ratios. Comparison with shell-model calculations using jj44pna, jj44b, JUN45, and LNPS effective interactions. Discussed configuration mixing.
doi: 10.1103/PhysRevC.88.041302
2013TO05 Phys.Rev. C 87, 041304 (2013) Y.Toh, C.J.Chiara, E.A.McCutchan, W.B.Walters, R.V.F.Janssens, M.P.Carpenter, S.Zhu, R.Broda, B.Fornal, B.P.Kay, F.G.Kondev, W.Krolas, T.Lauritsen, C.J.Lister, T.Pawlat, D.Seweryniak, I.Stefanescu, N.J.Stone, J.Wrzesinski, K.Higashiyama, N.Yoshinaga Evidence for rigid triaxial deformation at low energy in 76Ge NUCLEAR REACTIONS 238U(76Ge, 76Ge'), E=530 MeV; measured Eγ, Iγ, γγ-coin, γγ(θ) using Gammasphere array at ATLAS facility in ANL. 76Ge; deduced high-spin levels, bands, multipolarity, mixing ratios, J, π, B(E2), staggering. Comparison with collective- and shell-model calculations. Evidence of rigid triaxial deformation in the low-lying states of 76Ge. Systematics of staggering parameter for γ bands in 74,76,78Se, 76Ge, 76,78,80Kr nuclei.
doi: 10.1103/PhysRevC.87.041304
2012BR15 Phys.Rev. C 86, 064312 (2012) R.Broda, T.Pawlat, W.Krolas, R.V.F.Janssens, S.Zhu, W.B.Walters, B.Fornal, C.J.Chiara, M.P.Carpenter, N.Hoteling, L.W.Iskra, F.G.Kondev, T.Lauritsen, D.Seweryniak, I.Stefanescu, X.Wang, J.Wrzesinski Spectroscopic study of the 64, 66, 68Ni isotopes populated in 64Ni+238U collisions NUCLEAR REACTIONS 238U(64Ni, X), E=430 MeV; measured Eγ, Iγ, γγ(θ), γγ-coin, delayed γγ-coin using Gammasphere array at ANL facility. 64,66,68Ni; deduced levels, J, π. Comparison with shell-model calculations. Quasielastic and deep-inelastic reactions. NUCLEAR STRUCTURE 64,66,68Ni; calculated levels, J, π, configuration mixtures using large-scale shell-model with jj44b and jun45 interactions.
doi: 10.1103/PhysRevC.86.064312
2012CH09 Phys.Rev. C 85, 024309 (2012) C.J.Chiara, I.Stefanescu, W.B.Walters, S.Zhu, R.V.F.Janssens, M.P.Carpenter, R.Broda, B.Fornal, A.A.Hecht, N.Hoteling, E.G.Jackson, B.P.Kay, W.Krolas, T.Lauritsen, E.A.McCutchan, T.Pawlat, D.Seweryniak, X.Wang, A.Wohr, J.Wrzesinski Core-coupled protons, F7/2 intruder states, and competing G9/2 proton and neutron structures in 65, 67Cu NUCLEAR REACTIONS 238U(64Ni, X)65Cu/67Cu, E=430 MeV; measured Eγ, Iγ, γγ-coin, γ(θ), γγ(θ) using Gammasphere array and ATLAS facility at ANL. 65,67Cu; deduced levels, J, π, multipolarity, mixing ratios, configurations. Systematics of 7/2- and positive-parity states in A=57-71 Cu isotopes, and 2+ and 5- states in A=56-70 Ni isotopes. Systematics of ground-state bands in 60,66,68,70Zn and compared with those of f7/2- proton bands in 59,65,67,69Cu. Comparison with shell model calculations using JUN45 and jj44b interactions.
doi: 10.1103/PhysRevC.85.024309
2012CH39 Phys.Rev. C 86, 041304 (2012) C.J.Chiara, R.Broda, W.B.Walters, R.V.F.Janssens, M.Albers, M.Alcorta, P.F.Bertone, M.P.Carpenter, C.R.Hoffman, T.Lauritsen, A.M.Rogers, D.Seweryniak, S.Zhu, F.G.Kondev, B.Fornal, W.Krolas, J.Wrzesinski, N.Larson, S.N.Liddick, C.Prokop, S.Suchyta, H.M.David, D.T.Doherty Low-spin states and the non-observation of a proposed 2202-keV, o+ isomer in 68Ni NUCLEAR REACTIONS 197Au, 208Pb, 238U(70Zn, X), E=430, 440 MeV; measured Eγ, Iγ, (particle)γ-, γγ-coin, γγ(θ), prompt and delayed γ using Gammasphere array at ATLAS facility in ANL. 68Ni; deduced levels, J, π, T1/2, multipolarity and mixing ratio. Non-observation of a previously reported 0+ isomer in 68Ni.
doi: 10.1103/PhysRevC.86.041304
2012CI05 Phys.Rev. C 86, 054322 (2012) N.Cieplicka, K.H.Maier, B.Fornal, B.Szpak, R.V.F.Janssens, M.Alcorta, R.Broda, M.P.Carpenter, C.J.Chiara, C.R.Hoffman, B.P.Kay, F.G.Kondev, W.Krolas, T.Lauritsen, C.J.Lister, E.A.McCutchan, T.Pawlat, A.M.Rogers, D.Seweryniak, N.Sharp, W.B.Walters, J.Wrzesinski, S.Zhu Yrast structure of 206Bi: Isomeric states and one-proton-particle, three-neutron-hole excitations NUCLEAR REACTIONS 208Pb(76Ge, X), E=450 MeV; measured Eγ, Iγ, γ(θ), γγ-coin. 206Bi; deduced levels, J, π, T1/2, multipolarity, mixing ratio, configurations. Comparison with shell-model calculations.
doi: 10.1103/PhysRevC.86.054322
2012OH01 Phys.Rev.Lett. 109, 032504 (2012) T.Ohtsubo, N.J.Stone, J.R.Stone, I.S.Towner, C.R.Bingham, C.Gaulard, U.Koster, S.Muto, J.Nikolov, K.Nishimura, G.S.Simpson, G.Soti, M.Veskovic, W.B.Walters, F.Wauters Magnetic Dipole Moment of the Doubly-Closed-Shell Plus One Proton Nucleus 49Sc NUCLEAR MOMENTS 49Sc; measured hyperfine field, β asymmetry; deduced magnetic dipole moment. Comparison with available data. NUCLEAR STRUCTURE 41,49Sc; calculated magnetic dipole moment.
doi: 10.1103/PhysRevLett.109.032504
2012PA39 Phys.Rev. C 86, 064318 (2012) D.Pauwels, D.Radulov, W.B.Walters, I.G.Darby, H.De Witte, J.Diriken, D.V.Fedorov, V.N.Fedosseev, L.M.Fraile, M.Huyse, U.Koster, B.A.Marsh, L.Popescu, M.D.Seliverstov, A.M.Sjodin, P.Van den Bergh, J.Van de Walle, P.Van Duppen, M.Venhart, K.Wimmer Gamow-Teller decay population of 64Ni levels in the decay of 1+ 64Co RADIOACTIVITY 64Co(β-)[from U(p, F), E=1.4 GeV]; measured Eγ, Iγ, γγ-coin, Eβ using RILIS laser system and MINIBALL γ-detector clusters at CERN-ISOLDE facility. 64Ni; deduced levels, J, π, Iβ, logft, configurations, possible proton-intruder levels. 64Mn(β-n); measured Eγ, Iγ; deduced beta-delayed neutron probability Pn. Comparison with previous experimental studies. 63,64Fe, 64Ga, 128mIn(β-); observed Eγ.
doi: 10.1103/PhysRevC.86.064318
2012QU01 Phys.Rev. C 85, 035807 (2012) M.Quinn, A.Aprahamian, J.Pereira, R.Surman, O.Arndt, T.Baumann, A.Becerril, T.Elliot, A.Estrade, D.Galaviz, T.Ginter, M.Hausmann, S.Hennrich, R.Kessler, K.-L.Kratz, G.Lorusso, P.F.Mantica, M.Matos, F.Montes, B.Pfeiffer, M.Portillo, H.Schatz, F.Schertz, L.Schnorrenberger, E.Smith, A.Stolz, W.B.Walters, A.Wohr β decay of nuclei around 90Se: Search for signatures of a N=56 subshell closure relevant to the r process NUCLEAR REACTIONS 9Be(136Xe, X)86As/87As/88As/88Se/89Se/90Se/90Br/91Br/92Br/93Br/91Kr/92Kr/93Kr/94Kr/95Kr/93Rb/94Rb/95Rb/96Rb/97Rb/95Sr/96Sr/97Sr/98Sr/99Sr/97Y/98Y/99Y/100Y/101Y/100Zr/101Zr/102Zr/103Zr, E=120 MeV/nucleon; measured fragment spectra by energy loss and time-of-flight, total kinetic energies (TKE) of 97,98,99Sr fragments in 36+, 37+, 38+ charge states, half-lives by fragment-β correlations. Beta Counting System (BCS) at NSCL. RADIOACTIVITY 87,88As, 88,89,90Se, 90,91,92,93Br, 93,94,95Kr, 95,96,97Rb, 96,97,98,99Sr, 99,100,101Y(β-)[from 9Be(136Xe, X), E=120 MeV/nucleon]; measured Eβ, Eγ, (fragment)β correlations, half-lives. Beta Counting System (BCS) at NSCL and SEGA array. Maximum likelihood and least-squares analyses for half-lives. Comparison of measured half-lives with QRPA calculations used in r process, and with previous measurements. Role of g9/2 proton and h11/2 neutron intruders. No evidence of N=56 subshell closure in 90Se. Relevance to r-process nuclei.
doi: 10.1103/PhysRevC.85.035807
2012ZH08 Phys.Rev. C 85, 034336 (2012) S.Zhu, R.V.F.Janssens, M.P.Carpenter, C.J.Chiara, R.Broda, B.Fornal, N.Hoteling, W.Krolas, T.Lauritsen, T.Pawlat, D.Seweryniak, I.Stefanescu, J.R.Stone, W.B.Walters, X.Wang, J.Wrzesinski Nature of yrast excitations near N=40: Level structure of 67Ni NUCLEAR REACTIONS 238U(64Ni, X), E=430 MeV; measured Eγ, Iγ, γγ-coin, γγ(θ), γγ(t) using Gammasphere array at ATLAS facility. 67Ni; deduced high-spin levels, J, π, half-life, multipolarity, mixing ratio, configurations. Comparison with shell-model calculations. 64Ni; measured Eγ; deduced levels.
doi: 10.1103/PhysRevC.85.034336
2011AR18 Phys.Rev. C 84, 061307 (2011) O.Arndt, K.-L.Kratz, W.B.Walters, K.Farouqi, U.Koster, V.Fedosseev, S.Hennrich, C.J.Jost, A.Wohr, A.A.Hecht, B.Pfeiffer, J.Shergur, N.Hoteling Decay of the r-process nuclides 137, 138, 139Sb, and the A=130 solar r-process abundance peak RADIOACTIVITY 137,138,139Sb, 136,137Sn(β-), (β-n); measured E(n), I(n), half-lives, β-delayed neutron emission probability Pn using RILIS source and high-resolution mass separator at ISOLDE-CERN facility. 134,135,136,137,138,139,140Sb(β-), (β-n); calculated half-lives and β-delayed neutron probabilities for spherical and non-spherical shapes. Calculated r-process residual isotopic abundance plot using new data.
doi: 10.1103/PhysRevC.84.061307
2011CH42 Phys.Rev. C 84, 037304 (2011) C.J.Chiara, W.B.Walters, I.Stefanescu, M.Alcorta, M.P.Carpenter, B.Fornal, G.Gurdal, C.R.Hoffman, R.V.F.Janssens, B.P.Kay, F.G.Kondev, W.Krolas, T.Lauritsen, C.J.Lister, E.A.McCutchan, T.Pawlat, A.M.Rogers, D.Seweryniak, N.Sharp, J.Wrzesinski, S.Zhu Seniority, collectivity, and B(E2) enhancement in 72Ni NUCLEAR REACTIONS 238U(76Ge, X), E=530 MeV; 198Pt, 208Pb(76Ge, X), E=450 MeV; measured Eγ, Iγ, γγ-coin, isomer half-life using Gammasphere array. 72Ni; deduced levels, J, π, B(E2). Comparison with shell-model calculations, and level systematics of 70,76Ni.
doi: 10.1103/PhysRevC.84.037304
2011LI50 Phys.Rev. C 84, 061305 (2011) S.N.Liddick, S.Suchyta, B.Abromeit, A.Ayres, A.Bey, C.R.Bingham, M.Bolla, M.P.Carpenter, L.Cartegni, C.J.Chiara, H.L.Crawford, I.G.Darby, R.Grzywacz, G.Gurdal, S.Ilyushkin, N.Larson, M.Madurga, E.A.McCutchan, D.Miller, S.Padgett, S.V.Paulauskas, J.Pereira, M.M.Rajabali, K.Rykaczewski, S.Vinnikova, W.B.Walters, S.Zhu Shape coexistence along N=40 RADIOACTIVITY 64,66Mn(IT)[from 9Be(76Ge, X), E=140 MeV/nucleon]; 64,66Cr(β-)[from 9Be(86Kr, X), E=130 MeV/nucleon]; measured Eγ, Iγ, (fragment)βγ-, γγ-coin, γ(t), half-lives. 64,66Mn; deduced levels, J, π, beta feedings, log ft, configurations.
doi: 10.1103/PhysRevC.84.061305
2011PE34 J.Phys.:Conf.Ser. 312, 042019 (2011) J.Pereira, A.Aprahamian, O.Arndt, A.Becerril, T.Elliot, A.Estrade, D.Galaviz, S.Hennrich, P.Hosmer, R.Kessler, K.-L.Kratz, G.Lorusso, P.F.Mantica, M.Matos, F.Montes, B.Pfeiffer, M.Quinn, P.Santi, H.Schatz, F.Schertz, L.Schnorrenberger, E.Smith, A.Stolz, W.B.Walters, A.Wohr β-decay measurements of A simeq 70 ≈ 110 r-process nuclei at the National Superconducting Cyclotron Laboratory RADIOACTIVITY 106,107,108,109Nb, 108,109,110,111Mo(β-); compiled T1/2; calculated T1/2, Solar system r-process abundances using new T1/2.
doi: 10.1088/1742-6596/312/4/042019
2010CH51 Phys.Rev. C 82, 054313 (2010) C.J.Chiara, I.Stefanescu, N.Hoteling, W.B.Walters, R.V.F.Janssens, R.Broda, M.P.Carpenter, B.Fornal, A.A.Hecht, W.Krolas, T.Lauritsen, T.Pawlat, D.Seweryniak, X.Wang, A.Wohr, J.Wrzesinski, S.Zhu Influence of the νg9/2 orbital on level structures of neutron-rich 61, 62Mn36, 37 NUCLEAR REACTIONS 238U(64Ni, X)61Mn/62Mn, E=430 MeV; measured Eγ, Iγ, γγ-coin using Gammasphere array. 61,62Mn; deduced levels, J, π. Comparison with level structures of 53,55,57,59,58,60,64Mn.
doi: 10.1103/PhysRevC.82.054313
2010CR02 Phys.Rev. C 82, 014311 (2010) H.L.Crawford, R.V.F.Janssens, P.F.Mantica, J.S.Berryman, R.Broda, M.P.Carpenter, N.Cieplicka, B.Fornal, G.F.Grinyer, N.Hoteling, B.P.Kay, T.Lauritsen, K.Minamisono, I.Stefanescu, J.B.Stoker, W.B.Walters, S.Zhu β decay and isomeric properties of neutron-rich Ca and Sc isotopes RADIOACTIVITY 53,54,55,56,57Sc, 53,54Ca(β-); 54,56Sc(IT)[from Be(76Ge, X), E=130 MeV/nucleon]; measured Eγ, Iγ, (fragment)β-, γγ-, βγ-, (fragment)βγ-coin, half-lives. 53,54,55,56,57Ti, 53,54,56Sc; deduced levels, J, π, logft, configurations. Comparison with GXPF1 shell-model calculations. 54Ti(β-); measured half-life. 54,55,56Sc(β-n); deduced %β--n. NUCLEAR STRUCTURE 52,54,56Sc; calculated levels, J, π using GXPF1 shell-model. NUCLEAR REACTIONS Be(76Ge, X)52Ca/53Ca/54Ca/53Sc/54Sc/55Sc/56Sc/55Ti/56Ti/57Ti/58Ti/57V/58V/59V/60V/, E=130 MeV/nucleon; measured yields.
doi: 10.1103/PhysRevC.82.014311
2010DI14 Phys.Rev. C 82, 064309 (2010) J.Diriken, I.Stefanescu, D.Balabanski, N.Blasi, A.Blazhev, N.Bree, J.Cederkall, T.E.Cocolios, T.Davinson, J.Eberth, A.Ekstrom, D.V.Fedorov, V.N.Fedosseev, L.M.Fraile, S.Franchoo, G.Georgiev, K.Gladnishki, M.Huyse, O.V.Ivanov, V.S.Ivanov, J.Iwanicki, J.Jolie, T.Konstantinopoulos, Th.Kroll, R.Krucken, U.Koster, A.Lagoyannis, G.Lo Bianco, P.Maierbeck, B.A.Marsh, P.Napiorkowski, N.Patronis, D.Pauwels, P.Reiter, M.Seliverstov, G.Sletten, J.Van de Walle, P.Van Duppen, D.Voulot, W.B.Walters, N.Warr, F.Wenander, K.Wrzosek Coulomb excitation of 73Ga NUCLEAR REACTIONS 104Pd(71Ga, 71Ga'), 120Sn(73Ga, 73Ga'), E=2.95 MeV/nucleon, [secondary 71,73Ga beams from U(p, X), E=1 GeV]; measured Eγ, Iγ, (particle)γ-, γγ-coin at REX-ISOLDE. 71Ga, 73Ga; deduced levels, J, π, B(E2). Comparison with level systematics of 63,65,67,69,71,73,75,77Ga. Collectivity due to g9/2 neutron orbital. RADIOACTIVITY 73Zn(β-)[from U(p, X), E=1 GeV]; measured Eγ.
doi: 10.1103/PhysRevC.82.064309
2010HO12 Phys.Rev. C 82, 025806 (2010) P.Hosmer, H.Schatz, A.Aprahamian, O.Arndt, R.R.C.Clement, A.Estrade, K.Farouqi, K.-L.Kratz, S.N.Liddick, A.F.Lisetskiy, P.F.Mantica, P.Moller, W.F.Mueller, F.Montes, A.C.Morton, M.Ouellette, E.Pellegrini, J.Pereira, B.Pfeiffer, P.Reeder, P.Santi, M.Steiner, A.Stolz, B.E.Tomlin, W.B.Walters, A.Wohr Half-lives and branchings for β-delayed neutron emission for neutron-rich Co-Cu isotopes in the r-process RADIOACTIVITY 73,74,75Co, 75,76,77,78Ni, 76,77,78,79,80Cu, 79,80,81Zn, 81,82Ga(β-), (β-n)[from Be(86Kr, X), E=140 MeV/nucleon]; measured β spectra, βn-coin, neutron spectra, half-lives, delayed neutron-emission probabilities; calculated half-lives, P(n) using QRPA, CQRPA and OXBASH shell model. Discussed effects on various types of models for the rapid neutron-capture process (r-process) in nucleosynthesis. A=1-210; calculated abundances with classical r-process and HEW models using known decay data. 78Ni(β-); calculated Gamow-Teller strengths, effect on abundances.
doi: 10.1103/PhysRevC.82.025806
2010HO13 Phys.Rev. C 82, 044305 (2010) N.Hoteling, C.J.Chiara, R.Broda, W.B.Walters, R.V.F.Janssens, M.Hjorth-Jensen, M.P.Carpenter, B.Fornal, A.A.Hecht, W.Krolas, T.Lauritsen, T.Pawlat, D.Seweryniak, X.Wang, A.Wohr, J.Wrzesinski, S.Zhu Structure of 60, 62Fe and the onset of νg9/2 occupancy NUCLEAR REACTIONS 238U(64Ni, X), E=430 MeV; measured Eγ, Iγ, γγ-coin, γγ(θ), prompt and delayed γ spectra using Gammasphere array. 60,62Fe; deduced levels, J, π, multipolarity, yrast levels. Comparison with shell model calculations. Level systematics of 54,56,58,60,62,64Fe nuclei. RADIOACTIVITY 60,62Mn(β-)[from 238U(64Ni, X), E=430 MEV]; measured Eγ, Iγ, γγ-coin, γγ(θ) using Gammasphere array. 60,62Fe; deduced levels, J, π, multipolarity.
doi: 10.1103/PhysRevC.82.044305
2009AR04 Acta Phys.Pol. B40, 437 (2009) O.Arndt, S.Hennrich, N.Hoteling, C.J.Jost, B.E.Tomlin, J.Shergur, K.-L.Kratz, P.F.Mantica, B.A.Brown, R.V.F.Janssens, W.B.Walters, B.Pfeiffer, A.Wohr, S.Zhu, R.Broda, M.P.Carpenter, B.Fornal, A.A.Hecht, W.Krolas, T.Lauritsen, T.Pawlat, J.Pereira, D.Seweryniak, I.Stefanescu, J.R.Stone, J.Wrzesinski Structure of Neutron-Rich Odd-Mass 127, 129, 131In Populated in the Decay of 127, 129, 131Cd RADIOACTIVITY 127,129,131Cd(β-); measured Iγ, Eγ; deduced Jπ, level scheme. Comparison with calculations.
2009CR02 Phys.Rev. C 79, 054320 (2009) H.L.Crawford, P.F.Mantica, J.S.Berryman, R.Broda, B.Fornal, C.R.Hoffman, N.Hoteling, R.V.F.Janssens, S.M.Lenzi, J.Pereira, J.B.Stoker, S.L.Tabor, W.B.Walters, X.Wang, S.Zhu Low-energy structure of 61Mn populated following β decay of 61Cr RADIOACTIVITY 61Cr(β-)[from Be(76Ge, X), E=130 MeV/nucleon]; measured Eγ, Iγ, γγ-, βγ-coin, half-life. 61Mn; deduced levels, J, π. 54,56,58,60,62Cr, 56,58,60,62,64,66,68Fe, 58,60,62,64,66,68,70Ni, 57,59,61,63Mn; level systematics and shell-model calculations. NUCLEAR REACTIONS 9Be(76Ge, X)57Sc/58Ti/59Ti/59V/60V/60Cr/61Cr/62Cr/62Mn/63Mn, E=130 MeV/nucleon; measured yields.
doi: 10.1103/PhysRevC.79.054320
2009CR03 Acta Phys.Pol. B40, 481 (2009) H.L.Crawford, R.V.F.Janssens, P.F.Mantica, J.S.Berryman, R.Broda, M.P.Carpenter, B.Fornal, G.F.Grinyer, N.Hoteling, B.Kay, T.Lauritsen, K.Minamisono, I.Stefanescu, J.B.Stoker, W.B.Walters, S.Zhu β Decay Studies of Neutron-Rich Nuclei Near 52Ca RADIOACTIVITY 54Sc, 50K, 53Ca(β-);measured Eγ, Iγ;deduced level scheme, Jπ, isomeric transitions.
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2009PA16 Phys.Rev. C 79, 044309 (2009) D.Pauwels, O.Ivanov, N.Bree, J.Buscher, T.E.Cocolios, M.Huyse, Yu.Kudryavtsev, R.Raabe, M.Sawicka, J.Van de Walle, P.Van Duppen, A.Korgul, I.Stefanescu, A.A.Hecht, N.Hoteling, A.Wohr, W.B.Walters, R.Broda, B.Fornal, W.Krolas, T.Pawlat, J.Wrzesinski, M.P.Carpenter, R.V.F.Janssens, T.Lauritsen, D.Seweryniak, S.Zhu, J.R.Stone, X.Wang Structure of 65, 67Co studied through the β decay of 65, 67Fe and a deep-inelastic reaction RADIOACTIVITY 65,65mFe, 65Co, 67Fe(β-)[from 238U(p, F), E=30 MeV]; measured Eγ, Iγ, γγ-, βγ-coin, half-lives. 65Co, 65Ni, 67Co; deduced levels, J, π, configurations. 61,63,65Co; level systematics. Interpretation in terms of core coupled states with proton intruder orbitals. NUCLEAR REACTIONS 238U(64Ni, X), E=430 MeV; measured Eγ, Iγ, γγ-coin. 65Co; deduced levels, J, π, configurations.
doi: 10.1103/PhysRevC.79.044309
2009PA20 Acta Phys.Pol. B40, 629 (2009) T.Pawlat, R.Broda, B.Fornal, W.Krolas, J.Wrzesinski, R.V.F.Janssens, S.Zhu, M.P.Carpenter, W.B.Walters, N.Hoteling Experimental Study of Neutron-Rich Nuclei 89Rb and 91Rb NUCLEAR REACTIONS 208Pb, 238U(48Ca, X), 238U(64Ni, X), E=305, 330, 430 MeV;89,91Rb; measured Eγ, Iγ, γγ-coin; deduced J, π, level scheme, T1/2.
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2009PE06 Phys.Rev. C 79, 035806 (2009) J.Pereira, S.Hennrich, A.Aprahamian, O.Arndt, A.Becerril, T.Elliot, A.Estrade, D.Galaviz, R.Kessler, K.-L.Kratz, G.Lorusso, P.F.Mantica, M.Matos, P.Moller, F.Montes, B.Pfeiffer, H.Schatz, F.Schertz, L.Schnorrenberger, E.Smith, A.Stolz, M.Quinn, W.B.Walters, A.Wohr β-decay half-lives and β-delayed neutron emission probabilities of nuclei in the region A ≤ 110, relevant for the r process RADIOACTIVITY 100,101,102,103,104,105Y, 103,104,105,106,107Zr, 106,107,108,109Nb, 108,109,110,111Mo, 109,110,111,112,113Tc(β-), (β-n)[from 9Be(136Xe, X), E=120 MeV/nucleon]; measured fragments, neutrons, β, (fragment)β-coin, half-lives; deduced delayed neutron-emission probabilities. Comparisons with quasiparticle random phase approximation (QRPA03 and QRPA06) calculations. Discussed relevance to r-process nuclei.
doi: 10.1103/PhysRevC.79.035806
2009SE06 Acta Phys.Pol. B40, 621 (2009) D.Seweryniak, M.P.Carpenter, S.Gros, A.A.Hecht, N.Hoteling, R.V.F.Janssens, T.L.Khoo, T.Lauritsen, C.J.Lister, G.Lotay, D.Peterson, A.P.Robinson, W.B.Walters, X.Wang, P.J.Woods, S.Zhu New Results Near 100Sn: Observation of Single-Neutron States in 101Sn NUCLEAR REACTIONS 58Ni(46Ti, 3n), E=192 MeV; measured Eγ, Iγ, β-delayed Ep, Ip. Comparison with shell model calculations.
2009ST05 Phys.Rev. C 79, 034319 (2009) I.Stefanescu, W.B.Walters, R.V.F.Janssens, N.Hoteling, R.Broda, M.P.Carpenter, B.Fornal, A.A.Hecht, W.Krolas, T.Lauritsen, T.Pawlat, D.Seweryniak, J.R.Stone, X.Wang, A.Wohr, J.Wrzesinski, S.Zhu Levels above the 19/2- isomer in 71Cu: Persistence of the N=40 neutron shell gap NUCLEAR REACTIONS 238U(64Ni, X), E=430 MeV; measured Eγ, Iγ, γγ-coin. 71Cu; deduced levels, J, π, configurations. 70Ni, 71Cu, 92Mo; level systematics. Comparison with shell-model calculations.
doi: 10.1103/PhysRevC.79.034319
2009ST07 Phys.Rev. C 79, 044325 (2009) I.Stefanescu, D.Pauwels, N.Bree, T.E.Cocolios, J.Diriken, S.Franchoo, M.Huyse, O.Ivanov, Y.Kudryavtsev, N.Patronis, J.Van De Walle, P.Van Duppen, W.B.Walters Evidence for a β-decaying 1/2- isomer in 71Ni RADIOACTIVITY 71Co, 71Ni(β-) [from 238U(p, X), E=30 MeV]; measured Eγ, Iγ, β, γγ-, βγ-coin with laser on Co resonance, half-lives. 71Ni, 71Cu; deduced levels, J, π, configurations. 69Ni, 69Cu; systematics.
doi: 10.1103/PhysRevC.79.044325
2009ST12 Phys.Rev. C 79, 064302 (2009) I.Stefanescu, W.B.Walters, R.V.F.Janssens, S.Zhu, R.Broda, M.P.Carpenter, C.J.Chiara, B.Fornal, B.P.Kay, F.G.Kondev, W.Krolas, T.Lauritsen, C.J.Lister, E.A.McCutchan, T.Pawlat, D.Seweryniak, J.R.Stone, N.J.Stone, J.Wrzesinski Identification of the g9/2-proton bands in the neutron-rich 71, 73, 75, 77Ga nuclei NUCLEAR REACTIONS 238U(76Ge, X), E=530 MeV; measured Eγ, Iγ, γγ-coin. 71,73,75,77Ga; deduced levels, J, π. Discussed level systematics of A=65-77, odd-A Ga and Cu nuclides.
doi: 10.1103/PhysRevC.79.064302
2009ST28 Eur.Phys.J. A 42, 407 (2009) I.Stefanescu, W.B.Walters, P.F.Mantica, B.A.Brown, A.D.Davies, A.Estrade, P.T.Hosmer, N.Hoteling, S.N.Liddick, W.D.M.Rae, T.J.Mertzimekis, F.Montes, A.C.Morton, W.F.Mueller, M.Ouellette, E.Pellegrini, P.Santi, D.Seweryniak, H.Schatz, J.Shergur, A.Stolz, J.R.Stone, B.E.Tomlin Spectroscopy of exotic 121, 123, 125Ag produced in fragmentation reactions NUCLEAR REACTIONS 9Be(136Xe, X)121Pd/123Ag/125Ag, E=120 MeV/nucleon; measured Eγ, Iγ, γγ-, (fragment)γ-coin. 121,123,125Ag; deduced levels, J, π, T1/2. Comparison with shell model and systematics. RADIOACTIVITY 121Pd(β-) [from 9Be(136Xe, X), E=120 MeV/nucleon]; measured Eγ, Iγ, γγ-, (fragment)γ-coin. 121Ag; deduced levels, J, π. Comparison with shell model and systematics.
doi: 10.1140/epja/i2008-10754-7
2008HO05 Phys.Rev. C 77, 044314 (2008) N.Hoteling, W.B.Walters, R.V.F.Janssens, R.Broda, M.P.Carpenter, B.Fornal, A.A.Hecht, M.Hjorth-Jensen, W.Krolas, T.Lauritsen, T.Pawlat, D.Seweryniak, J.R.Stone, X.Wang, A.Wohr, J.Wrzesinski, S.Zhu Rotation-aligned coupling in 61Fe NUCLEAR REACTIONS 238U(64Ni, X), E=430 MeV; measured Eγ, Iγ, γγ-coin. 61Fe; deduced levels, J, π. 59Fe; measured Eγ, Iγ. 56,57,58,59,60Fe; systematics. Comparisons with shell model and particle-triaxial rotor model.
doi: 10.1103/PhysRevC.77.044314
2008MA01 Phys.Rev. C 77, 014313 (2008) P.F.Mantica, R.Broda, H.L.Crawford, A.Damaske, B.Fornal, A.A.Hecht, C.Hoffman, M.Horoi, N.Hoteling, R.V.F.Janssens, J.Pereira, J.S.Pinter, J.B.Stoker, S.L.Tabor, T.Sumikama, W.B.Walters, X.Wang, S.Zhu β decay of neutron-rich 53-56Ca RADIOACTIVITY 53,54,55,56Ca(β-) [from 9Be(76Ge, X), E=140 MeV/nucleon; measured Eγ, Iγ, βγ-coin, half-lives. 54Ca; deduced Iβ, logft. 54Sc; levels, J, π, half-lives, B(M1), B(E2), comparison with calculations. NUCLEAR REACTIONS 9Be(76Ge, X)49Cl/50Ar/51Ar/52K/53K/54K/53Ca/54Ca/55Ca/56Ca/55Sc/56Sc/57Sc/57Ti/58Ti/59Ti/60V, E=140 MeV/nucleon; measured reaction yields.
doi: 10.1103/PhysRevC.77.014313
2008MA59 Bull.Am.Phys.Soc. 53, 64 ED.02 (2008) P.F.Mantica, H.L.Crawford, J.Pereira, J.S.Pinter, J.B.Stoker, R.Broda, B.Fornal, R.V.F.Janssens, X.Wang, S.Zhu, N.Hoteling, W.B.Walters, C.R.Hoffman, S.L.Tabor β decay of 51, 52Ar RADIOACTIVITY 51,52Ar(β-) [from Be(76Ge, X), E=130 MeV/nucleon]; measured decay products, Eβ, Iβ; deduced T1/2. NSCL beta counting system.
2008PA33 Phys.Rev. C 78, 041307 (2008) D.Pauwels, O.Ivanov, N.Bree, J.Buscher, T.E.Cocolios, J.Gentens, M.Huyse, A.Korgul, Yu.Kudryavtsev, R.Raabe, M.Sawicka, I.Stefanescu, J.Van de Walle, P.Van den Bergh, P.Van Duppen, W.B.Walters Shape isomerism at N = 40: Discovery of a proton intruder state in 67Co RADIOACTIVITY 67Fe(β-) [from 238U(p, F), E=30 MeV]; measured Eγ, Iγ, Eβ, Iβ, γγ-, γβ-coin, half-lives, multipolarities, logft. 67Co; deduced levels, isomers, configurations by correlation techniques. Comparisons with 57,59,61,63,65,67Co, 68Ni and theoretical data.
doi: 10.1103/PhysRevC.78.041307
2008PE17 Nucl.Phys. A805, 470c (2008) J.Pereira, A.Aprahamian, O.Arndt, A.Becerril, T.Elliot, A.Estrade, D.Galaviz, S.Hennrich, P.Hosmer, L.Schnorrenberger, R.Kessler, K.-L.Kratz, G.Lorusso, P.F.Mantica, M.Matos, F.Montes, B.Pfeiffer, M.Quinn, P.Santi, H.Schatz, F.Schertz, E.Smith, B.E.Tomlin, W.B.Walters, A.Wohr β-decay studies of r-process nuclei at NSCL
doi: 10.1016/j.nuclphysa.2008.02.268
2008ST01 Phys.Rev. C 77, 014315 (2008) N.J.Stone, K.van Esbroeck, J.Rikovska Stone, M.Honma, T.Giles, M.Veskovic, G.White, A.Wohr, V.I.Mishin, V.N.Fedoseyev, U.Koster, P.F.Mantica, W.B.Walters Nuclear dipole moment of 71Cu from online β-NMR measurements RADIOACTIVITY 71Cu(β-); measured magnetic moment of ground state. Compared with magnetic dipole moments of 57,59,61,63,65,67,69Cu.
doi: 10.1103/PhysRevC.77.014315
2007HO22 Phys.Rev. C 76, 044324 (2007) N.Hoteling, W.B.Walters, B.E.Tomlin, P.F.Mantica, J.Pereira, A.Becerril, T.Fleckenstein, A.A.Hecht, G.Lorusso, M.Quinn, J.S.Pinter, J.B.Stoker Onset of isomers in 125, 126, 127, 128Cd and weakened neutron-neutron interaction strength NUCLEAR REACTIONS Be(136Xe, X), E=120 MeV/nucleon; measured Eγ, Iγ. 125Cd, 126Cd, 127Cd, 128Cd deduced levels, J, π, isomers, half-lives, band structure; 100,115,117,119,121,122,123,124Cd; level systematics.
doi: 10.1103/PhysRevC.76.044324
2007MA40 Acta Phys.Pol. B38, 1213 (2007) H.Mach, L.M.Fraile, O.Arndt, A.Blazhev, N.Boelaert, M.J.G.Borge, R.Boutami, H.Bradley, N.Braun, B.A.Brown, P.A.Butler, A.Covello, Z.Dlouhy, C.Fransen, H.O.U.Fynbo, A.Gargano, Ch.Hinke, P.Hoff, A.Joinet, A.Jokinen, J.Jolie, U.Koster, A.Korgul, K.-L.Kratz, T.Kroll, W.Kurcewicz, J.Nyberg, E.-M.Reillo, E.Ruchowska, W.Schwerdtfeger, G.S.Simpson, M.Stanoiu, O.Tengblad, P.G.Thirolf, W.B.Walters The Single-Particle and Collective Features in the Nuclei Just Above 132Sn RADIOACTIVITY 136Sn(β-); measured Eγ, Iγ, γγ-coinc. 135Sb deduced levels, B(E2).
2007SE04 Phys.Rev.Lett. 99, 022504 (2007) D.Seweryniak, M.P.Carpenter, S.Gros, A.A.Hecht, N.Hoteling, R.V.F.Janssens, T.L.Khoo, T.Lauritsen, C.J.Lister, G.Lotay, D.Peterson, A.P.Robinson, W.B.Walters, X.Wang, P.J.Woods, S.Zhu Single-Neutron States in 101Sn NUCLEAR REACTIONS 46Ti(58Ni, X)101Sn, E=192 MeV; measured Eγ, Ep, pγ-coinc. 101Sn deduced levels and relative single particle energies.
doi: 10.1103/PhysRevLett.99.022504
2007SE06 Phys.Rev.Lett. 99, 082502 (2007) D.Seweryniak, B.Blank, M.P.Carpenter, C.N.Davids, T.Davinson, S.J.Freeman, N.Hammond, N.Hoteling, R.V.F.Janssens, T.L.Khoo, Z.Liu, G.Mukherjee, A.Robinson, C.Scholey, S.Sinha, J.Shergur, K.Starosta, W.B.Walters, A.Woehr, P.J.Woods Effect of a Triaxial Nuclear Shape on Proton Tunneling: The Decay and Structure of 145Tm NUCLEAR REACTIONS 58Ni(92Mo, 4np), E=417 MeV; measured Eγ, Iγ, Ep, pγ-coinc. 145Tm deduced levels, J, π.
doi: 10.1103/PhysRevLett.99.082502
2007ST19 Nucl.Phys. A787, 455c (2007) M.A.Stoyer, W.B.Walters, C.Y.Wu, D.Cline, H.Hua, A.B.Hayes, R.Teng, R.M.Clark, P.Fallon, A.Goergen, A.O.Macchiavelli, K.Vetter, P.Mantica, B.Tomlin Spectroscopy of neutron-rich Pd and Cd isotopes near A=120 NUCLEAR REACTIONS 238U(α, F), E=30 MeV; measured fission fragment yield, Eγ, Iγ, (fragment)γ-coin. 117,118,120Pd, 122,124Cd deduced levels, J, π. NUCLEAR STRUCTURE 94,96,98,100,102,104,106,108,110,112,114,116,118,120Pd; analyzed levels, J, π; deduced configuration systematics and shell closure effects.
doi: 10.1016/j.nuclphysa.2006.12.068
2007TO23 Eur.Phys.J. Special Topics 150, 183 (2007) B.E.Tomlin, P.F.Mantica, W.B.Walters Seeking the phase transition where Cd, Ag, Pd, Rh, and Ru isotopes become "neutron rich": Isomeric decay in 125, 126, 127Cd, 123, 124, 125Ag, 121Pd, 120Rh, and 117Ru RADIOACTIVITY 117Ru, 120Rh, 121Pd, 123,124,125Ag, 125,126,127Cd(IT); measured Eγ, Iγ from isomer decays.
doi: 10.1140/epjst/e2007-00298-0
2007WH01 Phys.Rev. C 76, 057303 (2007) E.R.White, H.Mach, L.M.Fraile, U.Koster, O.Arndt, A.Blazhev, N.Boelaert, M.J.G.Borge, R.Boutami, H.Bradley, N.Braun, Z.Dlouhy, C.Fransen, H.O.U.Fynbo, Ch.Hinke, P.Hoff, A.Joinet, A.Jokinen, J.Jolie, A.Korgul, K.-L.Kratz, T.Kroll, W.Kurcewicz, J.Nyberg, E.-M.Reillo, E.Ruchowska, W.Schwerdtfeger, G.S.Simpson, M.Stanoiu, O.Tengblad, P.G.Thirolf, V.Ugryumov, W.B.Walters Lifetime measurement of the 167.1 keV state in 41Ar RADIOACTIVITY 41Cl(β-) [from U(p, X), E=1.4 GeV]; measured Eγ, Iγ, γγ-coin, βγγ-coin, βγ(t). 41Ar; measured half-lives of isomeric states; deduced levels, J, π, multipolarities, B(E2), B(M1).
doi: 10.1103/PhysRevC.76.057303
2006HO20 Phys.Rev.C 74, 064313 (2006) N.Hoteling, W.B.Walters, R.V.F.Janssens, R.Broda, M.P.Carpenter, B.Fornal, A.A.Hecht, M.Hjorth-Jensen, W.Krolas, T.Lauritsen, T.Pawlat, D.Seweryniak, X.Wang, A.Wohr, J.Wrzesinski, S.Zhu Yrast structure of 64Fe NUCLEAR REACTIONS 238U(64Ni, X)64Fe/69Ga, E=430 MeV; measured prompt and delayed Eγ, Iγ, γγ-coin. 64Fe deduced levels, J, π, configurations. Gammasphere array, comparison with shell model predictions. Level systematics in neighboring nuclides discussed.
doi: 10.1103/PhysRevC.74.064313
2006MO07 Phys.Rev. C 73, 035801 (2006) F.Montes, A.Estrade, P.T.Hosmer, S.N.Liddick, P.F.Mantica, A.C.Morton, W.F.Mueller, M.Ouellette, E.Pellegrini, P.Santi, H.Schatz, A.Stolz, B.E.Tomlin, O.Arndt, K.-L.Kratz, B.Pfeiffer, P.Reeder, W.B.Walters, A.Aprahamian, A.Wohr β-decay half-lives and β-delayed neutron emission probabilities for neutron rich nuclei close to the N = 82 r-process path RADIOACTIVITY 114,115Tc, 114,115,116,117,118Ru, 116,117,118,119,120,121Rh, 119,120,121,122,123,124Pd, 121,122,123,124Ag(β-) [from Be(136Xe, X)]; measured T1/2. 116,117,118,119,120Rh, 121,122,123Pd, 122,123,124Ag(β-n); measured β-delayed neutron emission probability. Astrophysical implications discussed.
doi: 10.1103/PhysRevC.73.035801
2006SE08 Phys.Rev. C 73, 061301 (2006) D.Seweryniak, K.Starosta, C.N.Davids, S.Gros, A.A.Hecht, N.Hoteling, T.L.Khoo, K.Lagergren, G.Lotay, D.Peterson, A.Robinson, C.Vaman, W.B.Walters, P.J.Woods, S.Zhu α decay of 105Te RADIOACTIVITY 105Te(α) [from 50Cr(58Ni, 3n)]; measured Qα, T1/2. Comparison with neighboring isotopes, model predictions.
doi: 10.1103/PhysRevC.73.061301
2005FO09 Phys.Rev. C 72, 014315 (2005) D.Fong, J.K.Hwang, A.V.Ramayya, J.H.Hamilton, Y.X.Luo, P.M.Gore, E.F.Jones, W.B.Walters, J.O.Rasmussen, M.A.Stoyer, S.J.Zhu, I.Y.Lee, A.O.Macchiavelli, S.C.Wu, A.V.Daniel, G.M.Ter-Akopian, Yu.Ts.Oganessian, J.D.Cole, R.Donangelo, W.C.Ma Negative parity bands of 115Pd and band structures in 113, 115, 117Pd RADIOACTIVITY 252Cf(SF); measured Eγ, Iγ, γγ-coin. 113,115,117Pd deduced levels, J, π. Gammasphere array.
doi: 10.1103/PhysRevC.72.014315
2005HO08 Phys.Rev.Lett. 94, 112501 (2005) P.T.Hosmer, H.Schatz, A.Aprahamian, O.Arndt, R.R.C.Clement, A.Estrade, K.-L.Kratz, S.N.Liddick, P.F.Mantica, W.F.Mueller, F.Montes, A.C.Morton, M.Ouellette, E.Pellegrini, B.Pfeiffer, P.Reeder, P.Santi, M.Steiner, A.Stolz, B.E.Tomlin, W.B.Walters, A.Wohr Half-Life of the Doubly Magic r-Process Nucleus 78Ni RADIOACTIVITY 75,76,77,78Ni, 77,78Cu(β-) [from Be(86Kr, X)]; measured T1/2. Astrophysical implications discussed.
doi: 10.1103/PhysRevLett.94.112501
2005KA45 Eur.Phys.J. A 25, Supplement 1, 117 (2005) T.Kautzsch, A.Wohr, W.B.Walters, K.-L.Kratz, B.Pfeiffer, M.Hannawald, J.Shergur, O.Arndt, S.Hennrich, S.Falahat, T.Griesel, O.Keller, A.Aprahamian, B.A.Brown, P.F.Mantica, M.A.Stoyer, H.L.Ravn, for the ISOLDE IS333 and Rochester CHICO/Gammasphere Collaborations Structure of neutron-rich even-even 124, 126Cd RADIOACTIVITY 124,126Ag(β-); measured Eγ, Iγ, γγ-coin following decay of mass-separated sources. 124,126Cd deduced levels, J, π. Comparison with shell-model predictions.
doi: 10.1140/epjad/i2005-06-197-6
2005MO30 Nucl.Phys. A758, 643c (2005) F.Montes, H.Schatz, A.Aprahamian, O.Arndt, A.Estrade, K.-L.Kratz, S.N.Liddick, P.F.Mantica, W.F.Mueller, P.Hosmer, A.C.Morton, M.Ouellette, E.Pellegrini, B.Pfeiffer, P.Reeder, P.Santi, A.Stolz, B.E.Tomlin, W.B.Walters, A.Wohr β-Decay Studies Close to the N=82 r-process Path RADIOACTIVITY 119Rh(β-) [from Be(136Xe, X)]; measured T1/2.
doi: 10.1016/j.nuclphysa.2005.05.188
2005RO19 Phys.Rev.Lett. 95, 032502 (2005) A.P.Robinson, P.J.Woods, D.Seweryniak, C.N.Davids, M.P.Carpenter, A.A.Hecht, D.Peterson, S.Sinha, W.B.Walters, S.Zhu Ground State Proton Radioactivity from 121Pr: When Was This Exotic Nuclear Decay Mode First Discovered ? RADIOACTIVITY 121Pr(p) [from 92Mo(36Ar, 6np)]; measured Ep, T1/2. 121Pr deduced ground-state J, deformation. Comparison with previous results.
doi: 10.1103/PhysRevLett.95.032502
2005RO40 Eur.Phys.J. A 25, Supplement 1, 155 (2005) A.P.Robinson, C.N.Davids, D.Seweryniak, P.J.Woods, B.Blank, M.P.Carpenter, T.Davinson, S.J.Freeman, N.Hammond, N.Hoteling, R.V.F.Janssens, T.L.Khoo, Z.Liu, G.Mukherjee, C.Scholey, J.Shergur, S.Sinha, A.A.Sonzogni, W.B.Walters, A.Woehr Recoil decay tagging study of 146Tm NUCLEAR REACTIONS 58Ni(92Mo, 3np), E not given; measured Eγ, Iγ, γγ-, (recoil)γ-coin. 146Tm deduced levels, J, π. Gammasphere array, recoil-decay tagging. RADIOACTIVITY 146Tm(p) [from 58Ni(92Mo, X)]; measured Eγ, Ep, T1/2 following proton decay from ground and excited states. 146Tm, 145Er deduced levels, J, π, configurations.
doi: 10.1140/epjad/i2005-06-143-8
2005SC28 Eur.Phys.J. A 25, Supplement 1, 639 (2005) H.Schatz, P.T.Hosmer, A.Aprahamian, O.Arndt, R.R.C.Clement, A.Estrade, K.-L.Kratz, S.N.Liddick, P.F.Mantica, W.F.Mueller, F.Montes, A.C.Morton, M.Ouellette, E.Pellegrini, B.Pfeiffer, P.Reeder, P.Santi, M.Steiner, A.Stolz, B.E.Tomlin, W.B.Walters, A.Wohr The half-life of the doubly-magic r-process nucleus 78Ni RADIOACTIVITY 78Ni(β-) [from 86Kr fragmentation]; measured T1/2. Comparison with model predictions, astrophysical implications discussed.
doi: 10.1140/epjad/i2005-06-069-1
2005SE11 Phys.Rev. C 71, 054319 (2005) D.Seweryniak, J.Uusitalo, P.Bhattacharyya, M.P.Carpenter, J.A.Cizewski, K.Y.Ding, C.N.Davids, N.Fotiades, R.V.F.Janssens, T.Lauritsen, C.J.Lister, A.O.Macchiavelli, D.Nisius, P.Reiter, W.B.Walters, P.J.Woods Multiparticle configurations in N = 84 isotones located at the proton drip line NUCLEAR REACTIONS 102Pd(58Ni, 2n), (58Ni, 2np), (58Ni, 2n2p), E=270 MeV; measured Eγ, Iγ, γγ-, (recoil)γ-coin. 156Hf, 157Ta, 158W deduced levels, J, π, isomeric states T1/2. Gammasphere array, recoil-decay tagging, shell model calculations.
doi: 10.1103/PhysRevC.71.054319
2005SE21 J.Phys.(London) G31, S1503 (2005) D.Seweryniak, C.N.Davids, A.Robinson, P.J.Woods, B.Blank, M.P.Carpenter, T.Davinson, S.J.Freeman, N.Hammond, N.Hoteling, R.V.F.Janssens, T.L.Khoo, Z.Liu, G.Mukherjee, J.Shergur, S.Sinha, A.A.Sonzogni, W.B.Walters, A.Woehr Proton decay: spectroscopic probe beyond the proton drip line RADIOACTIVITY 130Eu, 135Tb, 145,146Tm(p); analyzed proton-decay data.
doi: 10.1088/0954-3899/31/10/021
2005SE26 Eur.Phys.J. A 25, Supplement 1, 159 (2005) D.Seweryniak, C.N.Davids, A.Robinson, P.J.Woods, B.Blank, M.P.Carpenter, T.Davinson, S.J.Freeman, N.Hammond, N.Hoteling, R.V.F.Janssens, T.L.Khoo, Z.Liu, G.Mukherjee, J.Shergur, S.Sinha, A.A.Sonzogni, W.B.Walters, A.Woehr Particle-core coupling in the transitional proton emitters 145, 146, 147Tm NUCLEAR REACTIONS 58Ni(92Mo, 2np), E=512 MeV; 58Ni(92Mo, 3np), E=460 MeV; 58Ni(92Mo, 4np), E=417 MeV; measured Eγ, Iγ, γγ-, (recoil)γ-coin. 145,146,147Tm deduced levels, J, π, proton-decay features. Gammasphere array, recoil-decay tagging. Comparison with Particle Rotor model predictions. RADIOACTIVITY 145Tm(p) [from 58Ni(92Mo, 4np)]; measured Ep, Eγ, pγ-coin.
doi: 10.1140/epjad/i2005-06-166-1
2005SH23 Phys.Rev. C 71, 064321 (2005) J.Shergur, A.Wohr, W.B.Walters, K.-L.Kratz, O.Arndt, B.A.Brown, J.Cederkall, I.Dillmann, L.M.Fraile, P.Hoff, A.Joinet, U.Koster, B.Pfeiffer Level structure of odd-odd 134Sb populated in the β- decays of 134, 135Sn RADIOACTIVITY 134Sn(β-); 135Sn(β-), (β-n); measured Eγ, Iγ, βγ-, γγ-coin. 134Sb deduced levels, J, π, β-decaying isomeric state. Mass separator, shell model calculations.
doi: 10.1103/PhysRevC.71.064321
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