NSR Query Results
Output year order : Descending NSR database version of April 26, 2024. Search: Author = B.P.McCormick Found 11 matches. 2023GR07 Phys.Lett. B 847, 138268 (2023) T.J.Gray, A.E.Stuchbery, J.Dobaczewski, A.Blazhev, H.A.Alshammari, L.J.Bignell, J.Bonnard, B.J.Coombes, J.T.H.Dowie, M.S.M.Gerathy, T.Kibedi, G.J.Lane, B.P.McCormick, A.J.Mitchell, C.Nicholls, J.G.Pope, P.-G.Reinhard, N.J.Spinks, Y.Zhong Shape polarization in the tin isotopes near N = 60 from precision g-factor measurements on short-lived 11/2- isomers RADIOACTIVITY 109,111Sn(IT) [from 96,98Mo(16O, 3n), E=58 MeV]; measured decay products, frequencies, Eγ, Iγ. 113Sn; deduced γ-ray energies, partial level schemes, isomeric R(t) function, g-factors, hyperfine field strength. Comparison with broken-symmetry density functional theory calculations and available data. The Time Differential Perturbed Angular Distribution (TDPAD) technique. The Heavy Ion Accelerator Facility at the Australian National University.
doi: 10.1016/j.physletb.2023.138268
2022ID01 Phys.Rev.Lett. 128, 252501 (2022) E.Ideguchi, T.Kibedi, J.T.H.Dowie, T.H.Hoang, M.Kumar Raju, N.Aoi, A.J.Mitchell, A.E.Stuchbery, N.Shimizu, Y.Utsuno, A.Akber, L.J.Bignell, B.J.Coombes, T.K.Eriksen, T.J.Gray, G.J.Lane, B.P.McCormick Electric Monopole Transition from the Superdeformed Band in 40Ca NUCLEAR REACTIONS 40Ca(p, p'), E<10 MeV; measured reaction products, Eγ, Iγ, X-rays; deduced γ-ray energies, energy levels, partial level scheme, electric monopole (E0) transition strengths, transition rates for 0+ states. Comparison with Large-scale shell-model (LSSM) calculations and systematics. The 14UD Pelletron tandem accelerator of the Heavy Ion Accelerator Facility at the Australian National University.
doi: 10.1103/PhysRevLett.128.252501
2021GE07 Phys.Lett. B 823, 136738 (2021) M.S.M.Gerathy, A.J.Mitchell, G.J.Lane, A.E.Stuchbery, A.Akber, H.A.Alshammari, L.J.Bignell, B.J.Coombes, J.T.H.Dowie, T.J.Gray, T.Kibedi, B.P.McCormick, L.J.Mckie, M.S.Rahman, N.J.Spinks, B.P.E.Tee, Y.Y.Zhong, K.Zhu Emerging collectivity in neutron-hole transitions near doubly magic 208Pb NUCLEAR REACTIONS 209Bi(6Li, 2nα), (6Li, 4n), E=48 MeV; 204Pb(13C, 4n), E=80 MeV; measured reaction products, Eγ, Iγ. 209Po, 211Rn, 213Ra; deduced γ-ray energies and intensities, T1/2, B(E2), emerging collectivity beyond the shell-model valence space. Comparison with calculations. Direct fast-timing methods.
doi: 10.1016/j.physletb.2021.136738
2020DO10 Phys.Lett. B 811, 135855 (2020) J.T.H.Dowie, T.Kibedi, D.G.Jenkins, A.E.Stuchbery, A.Akber, H.A.Alshammari, N.Aoi, A.Avaa, L.J.Bignell, M.V.Chisapi, B.J.Coombes, T.K.Eriksen, M.S.M.Gerathy, T.J.Gray, T.H.Hoang, E.Ideguchi, P.Jones, M.Kumar Raju, G.J.Lane, B.P.McCormick, L.J.McKie, A.J.Mitchell, N.J.Spinks, B.P.E.Tee Evidence for shape coexistence and superdeformation in 24Mg NUCLEAR REACTIONS 24Mg(p, p'), E=8 MeV; measured reaction products, Eγ, Iγ, Eβ, Iβ; deduced level energies, J, π, level lifetimes, E0 strength. Comparison with shell model calculations using NuShellX and the USDA interaction in the sd model space.
doi: 10.1016/j.physletb.2020.135855
2020ER03 Phys.Rev. C 102, 024320 (2020) T.K.Eriksen, T.Kibedi, M.W.Reed, A.E.Stuchbery, K.J.Cook, A.Akber, B.Alshahrani, A.A.Avaa, K.Banerjee, A.C.Berriman, L.T.Bezzina, L.Bignell, J.Buete, I.P.Carter, B.J.Coombes, J.T.H.Dowie, M.Dasgupta, L.J.Evitts, A.B.Garnsworthy, M.S.M.Gerathy, T.J.Gray, D.J.Hinde, T.H.Hoang, S.S.Hota, E.Ideguchi, P.Jones, G.J.Lane, B.P.McCormick, A.J.Mitchell, N.Palalani, T.Palazzo, M.Ripper, E.C.Simpson, J.Smallcombe, B.M.A.Swinton-Bland, T.Tanaka, T.G.Tornyi, M.O.de Vries Improved precision on the experimental E0 decay branching ratio of the Hoyle state NUCLEAR REACTIONS 12C(p, p'), E=10.5 MeV; measured electron-positron pairs for E0 transition from the first excited 0+ Hoyle state, and for E2 transition from the first 2+ state, Eγ, (ce)(ce)- and (ce)γ-coin, γ(θ), E(p), I(p) using the superconducting solenoid Super-e pair spectrometer and Si(Li) detector array for electrons and positrons, HPGe detector for γ radiation, and ANU BALiN double sided silicon strip detector array for scattered protons at the 14 UD pelletron tandem accelerator of Australian National University; deduced E0 branching ratio ΓE0π/Γ, reduction in radiative width. Comparison with previous experimental measurements; calculated 3α reaction rate within the temperature range of helium burning red giant stars using the NACRE library value. Possible impact on astrophysical calculations.
doi: 10.1103/PhysRevC.102.024320
2020GE08 Phys.Rev. C 102, 044319 (2020) M.S.M.Gerathy, G.J.Lane, A.E.Stuchbery, G.D.Dracoulis, T.Kibedi, A.Akber, L.J.Bignell, B.J.Coombes, J.T.H.Dowie, T.J.Gray, B.Q.Lee, B.P.McCormick, A.J.Mitchell, N.Palalani γ-ray and conversion-electron spectroscopy of the high-spin isomer in 145Sm RADIOACTIVITY 145Sm(IT)[from 124Sn(26Mg, 5n), E=110, 115 MeV, followed by separation of evaporation residues by the SOLITAIRE separator and implantation in a catcher tape at the focal point of the Solenogam array]; measured Eγ, Iγ, E(ce), I(ce), γγ- and γ(ce)-coin, half-lives of isomers by γ(t) and γγ(t) at the at the Australian National University Heavy-Ion Accelerator Facility. 145Sm; deduced high-spin levels, J, π, conversion coefficients, multipolarities, B(E1), B(M1), B(E2), B(M2), B(E3), configurations. Comparisons with shell-model calculations using the KSHELL code. Systematics of energies of the high-spin isomers in N=83, odd-A isotones of 143Nd, 145Sm, 147Gd, 149Dy and 151Er. NUCLEAR STRUCTURE 145Sm; calculated high-spin levels, J, π, amplitudes of major configurations using shell model and KSHELL code. Comparison with experimental data.
doi: 10.1103/PhysRevC.102.044319
2020GR05 Phys.Rev. C 101, 054302 (2020) T.J.Gray, A.E.Stuchbery, B.J.Coombes, J.T.H.Dowie, M.S.M.Gerathy, T.Kibedi, G.J.Lane, B.P.McCormick, A.J.Mitchell, M.W.Reed Hyperfine fields at 66Ga, 67, 69Ge implanted into iron and gadolinium hosts at 6 K, and applications to g-factor measurements NUCLEAR REACTIONS 56Fe(12C, pn)66Ga, E=28 MeV; 54,56Fe(16O, 2pn)67Ge/69Ge, E=60 MeV; measured Eγ, and Iγ of recoil 66Ga, 67,69Ge nuclei implanted in Fe and Gd foils using HPGe and LaBr3 detectors for γ detection at the Heavy Ion Accelerator Facility of the Australian National University. NUCLEAR MOMENTS 66mGa, 67,69Ge; measured hyperfine magnetic fields, and g-factors using time differential perturbed angular distribution (TDPAD) method; deduced configuration for 66mGa. Comparison with previous experimental results.
doi: 10.1103/PhysRevC.101.054302
2019EV01 Phys.Rev. C 99, 024306 (2019) L.J.Evitts, A.B.Garnsworthy, T.Kibedi, J.Smallcombe, M.W.Reed, A.E.Stuchbery, G.J.Lane, T.K.Eriksen, A.Akber, B.Alshahrani, M.de Vries, M.S.M.Gerathy, J.D.Holt, B.Q.Lee, B.P.McCormick, A.J.Mitchell, M.Moukaddam, S.Mukhopadhyay, N.Palalani, T.Palazzo, E.E.Peters, A.P.D.Ramirez, T.Tornyi, S.W.Yates E0 transition strength in stable Ni isotopes NUCLEAR REACTIONS 58,60,62Ni(p, p'), E=4.7-9.2 MeV; measured Eγ, Iγ, γ(θ), conversion electrons using the CAESAR array for γ detection and Super-e spectrometer for electron detection at ANU-Canberra. 58,60,62Ni(n, n'), E=2.42, 2.90 MeV; measured Eγ, Iγ, level half-lives by DSAM at the University of Kentucky Accelerator Laboratory. 58,60,62Ni; deduced levels, J, π, K-conversion coefficients, E2/M1 multipole mixing ratios and E0 admixtures in 2+ to 2+ transitions, 0+ to 0+ E0 transitions, electric monopole (E0) transition strengths, B(M1), B(E2). Comparison with evaluated data in Nuclear Data Sheets. Systematics of 2+ to 2+ and 0+ to 0+ monopole transition strengths ρ2(E0) in even-even nuclei with A<250.
doi: 10.1103/PhysRevC.99.024306
2019MC05 Phys.Rev. C 100, 044317 (2019) B.P.McCormick, A.E.Stuchbery, B.A.Brown, G.Georgiev, B.J.Coombes, T.J.Gray, M.S.M.Gerathy, G.J.Lane, T.Kibedi, A.J.Mitchell, M.W.Reed, A.Akber, L.J.Bignell, J.T.H.Dowie, T.K.Eriksen, S.Hota, N.Palalani, T.Tornyi First-excited state g factors in the stable, even Ge and Se isotopes NUCLEAR MOMENTS 70,72,74,76Ge, 74,76,78,80,82Se; measured Eγ, scattered carbon particles, (particle)γ-coin, angular correlations, transient-field precession angles, relative g factors of the first 2+ states using transient field (TF) method in inverse kinematics with the Rutgers parameterization, and ion beams of Ge and Se isotopes from the Australian National University 14UD Pelletron accelerator incident on a multilayer target of C layer, an iron or gadolinium foil, and a copper backing; deduced g factors for the Se and Ge isotopes from a global fit to the present data, together with previous g-factor ratios. Comparison with shell-model calculations using JUN45 and jj44b interactions.
doi: 10.1103/PhysRevC.100.044317
2018EV01 Phys.Lett. B 779, 396 (2018) L.J.Evitts, A.B.Garnsworthy, T.Kibedi, J.Smallcombe, M.W.Reed, B.A.Brown, A.E.Stuchbery, G.J.Lane, T.K.Eriksen, A.Akber, B.Alshahrani, M.de Vries, M.S.M.Gerathy, J.D.Holt, B.Q.Lee, B.P.McCormick, A.J.Mitchell, M.Moukaddam, S.Mukhopadhyay, N.Palalani, T.Palazzo, E.E.Peters, A.P.D.Ramirez, S.R.Stroberg, T.Tornyi, S.W.Yates Identification of significant E0 strength in the 2+2 → 2+1 transitions of 58, 60, 62Ni NUCLEAR REACTIONS 58,60,62Ni(p, p'), E<9.2 MeV; measured reaction products, Eγ, Iγ; deduced γ-ray energies and intensities, nuclear and quadrupole moments, B(E2), B(M1). Comparison with theoretical calculations.
doi: 10.1016/j.physletb.2018.01.076
2018MC04 Phys.Lett. B 779, 445 (2018) B.P.McCormick, A.E.Stuchbery, T.Kibedi, G.J.Lane, M.W.Reed, T.K.Eriksen, S.S.Hota, B.Q.Lee, N.Palalani Probing the N = 14 subshell closure: g factor of the 26Mg(2+1) state NUCLEAR REACTIONS Gd(24Mg, 24Mg'), (26Mg, 26Mg'), E=120 MeV; measured reaction products, Eγ, Iγ. 24,26Mg; deduced the first-excited state g-factors using the high-velocity transient-field technique. Comparison with theoretical calculations.
doi: 10.1016/j.physletb.2018.02.032
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