NSR Query Results
Output year order : Descending NSR database version of April 26, 2024. Search: Author = J.Ndayishimye Found 21 matches. 2024GU06 Phys.Rev.Lett. 132, 092501 (2024) R.J.Guo, S.Y.Wang, C.Liu, R.A.Bark, J.Meng, S.Q.Zhang, B.Qi, A.Rohilla, Z.H.Li, H.Hua, Q.B.Chen, H.Jia, X.Lu, S.Wang, D.P.Sun, X.C.Han, W.Z.Xu, E.H.Wang, H.F.Bai, M.Li, P.Jones, J.F.Sharpey-Schafer, M.Wiedeking, O.Shirinda, C.P.Brits, K.L.Malatji, T.Dinoko, J.Ndayishimye, S.Mthembu, S.Jongile, K.Sowazi, S.Kutlwano, T.D.Bucher, D.G.Roux, A.A.Netshiya, L.Mdletshe, S.Noncolela, W.Mtshali Evidence for Chiral Wobbler in Nuclei NUCLEAR REACTIONS 58Ni(19F, n2p)74Br, E=62 MeV; measured reaction products, Eγ, Iγ, γ-γ-coin.; deduced γ-ray energies, the angular distribution from oriented state (ADO) ratios and linear polarization values for the representative linking transitions between bands, level T1/2, partial level scheme, J, π, B(E2), bands, one-phonon wobbling excitation built on the yrast band. Doppler-shift-attenuation method, the detector array AFRODITE.
doi: 10.1103/PhysRevLett.132.092501
2023RA04 Nucl.Phys. A1032, 122622 (2023) Y.Rahma, S.Ouichaoui, J.Kiener, E.A.Lawrie, J.J.Lawrie, V.Tatischeff, A.Belhout, D.Moussa, W.Yahia-Cherif, H.Benhabiles-Mezhoud, T.D.Bucher, T.R.S.Dinoko, A.Chafa, J.L.Conradie, S.Damache, M.Debabi, I.Deloncle, J.L.Easton, M.Fouka, C.Hamadache, F.Hammache, P.Jones, B.V.Kheswa, N.A.Khumalo, T.Lamula, S.N.T.Majola, J.Ndayishimye, D.Negi, S.P.Noncolela, S.Ouziane, P.Papka, S.Peterson, M.Kumar Raju, V.Ramanathan, B.M.Rebeiro, N.de Sereville, J.F.Sharpey-Schafer, O.Shirinda, M.Wiedeking, S.Wyngaardt γ-ray emission in proton-induced nuclear reactions on natC and Mylar targets over the incident energy range, Ep = 30 - 200 MeV. Astrophysical implications NUCLEAR REACTIONS 12C, 16O, 24Mg, 28Si, 56Fe(p, X), E=30-200 MeV; measured reaction products; deduced γ-ray production σ. The K = 200 separated sector cyclotron of iThemba LABS using a high-energy resolution, high-efficiency detection array composed of 8 Compton-suppressed clover detectors comprising 32 HP-Ge crystals for recording the γ-ray energy spectra.
doi: 10.1016/j.nuclphysa.2023.122622
2022MS01 Nucl.Instrum.Methods Phys.Res. A1026, 166195 (2022) L.Msebi, V.W.Ingeberg, P.Jones, J.F.Sharpey-Schafer, A.A.Avaa, T.D.Bucher, C.P.Brits, M.V.Chisapi, D.J.C.Kenfack, E.A.Lawrie, K.L.Malatji, B.Maqabuka, L.Makhathini, S.P.Noncolela, J.Ndayishimye, A.Netshiya, O.Shrinda, M.Wiedeking, B.R.Zikhali A fast-timing array of 2" x 2" LaBr3:Ce detectors for lifetime measurements of excited nuclear RADIOACTIVITY 60Co(β-), 152Eu(EC), (β-), 67Ga, 133Ba(EC); measured decay products, Eγ, Iγ; deduced γ-ray energies, level T1/2. NUCLEAR REACTIONS 45Sc(p, α), (p, d), 64Ni(p, p'), E=27 MeV; measured reaction products, Eγ, Iγ; deduced γ-ray energies, level, J, π, T1/2.
doi: 10.1016/j.nima.2021.166195
2022MU09 Phys.Lett. B 827, 137006 (2022) L.Mu, S.Y.Wang, C.Liu, B.Qi, R.A.Bark, J.Meng, S.Q.Zhang, P.Jones, S.M.Wyngaardt, H.Jia, Q.B.Chen, Z.Q.Li, S.Wang, D.P.Sun, R.J.Guo, X.C.Han, W.Z.Xu, X.Xiao, P.Y.Zhu, H.W.Li, H.Hua, X.Q.Li, C.G.Li, R.Han, B.H.Sun, L.H.Zhu, T.D.Bucher, B.V.Kheswa, N.Khumalo, E.A.Lawrie, J.J.Lawrie, K.L.Malatji, L.Msebi, J.Ndayishimye, J.F.Sharpey-Schafer, O.Shirinda, M.Wiedeking, T.Dinoko, S.S.Ntshangase First observation of the coexistence of multiple chiral doublet bands and pseudospin doublet bands in the A ≈ 80 mass region NUCLEAR REACTIONS 82Se(α, X)81Kr, E=65, 68 MeV; measured reaction products, Eγ, Iγ; deduced γ-ray energies, J, π, two nearly degenerate positive-parity bands. Comparison with the constrained covariant density functional theory and the multiparticle plus rotor model calculations.
doi: 10.1016/j.physletb.2022.137006
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
2020MA16 Phys.Rev. C 101, 044312 (2020) S.N.T.Majola, M.A.Sithole, L.Mdletshe, D.Hartley, J.Timar, B.M.Nyako, J.M.Allmond, R.A.Bark, C.Beausang, L.Bianco, T.D.Bucher, S.P.Bvumbi, M.P.Carpenter, C.J.Chiara, N.Cooper, D.M.Cullen, D.Curien, T.S.Dinoko, B.J.P.Gall, P.E.Garrett, P.T.Greenlees, J.Hirvonen, U.Jakobsson, P.M.Jones, R.Julin, S.Juutinen, S.Ketelhut, B.V.Kheswa, F.G.Kondev, A.Korichi, W.D.Kulp, T.Lauritsen, E.A.Lawrie, L.Makhathini, P.L.Masiteng, B.Maqabuka, E.A.McCutchan, D.Miller, S.Miller, A.Minkova, L.Msebi, S.H.Mthembu, J.Ndayishimye, P.Nieminen, P.Z.Ngcobo, S.S.Ntshangase, J.N.Orce, P.Peura, P.Rahkila, N.Redon, L.L.Riedinger, M.A.Riley, D.G.Roux, P.Ruotsalainen, J.Piot, J.Saren, J.F.Sharpey-Schafer, C.Scholey, O.Shirinda, J.Simpson, J.Sorri, I.Stefanescu, S.Stolze, J.Uusitalo, X.Wang, V.Werner, J.L.Wood, C.-H.Yu, S.Zhu, G.Zimba First candidates for γ vibrational bands built on the [505] 11/2- neutron orbital in odd-A Dy isotopes NUCLEAR REACTIONS 155Gd(α, 2n)157Dy, E=25 MeV; measured Eγ, Iγ, γγ-coin, γγ(θ)(DCO), γγ(linear polarization) using the JUROGAM II array at the University of Jyvaskyla. 148Nd(12C, 5n)155Dy, E=65 MeV; 124Sn(36S, 5n)155Dy, E=165 MeV; measured Eγ, Iγ, γγ-coin using GAMMASPHERE array at Argonne National Laboratory. 155,157Dy; deduced high-spin levels, J, π, multipolarities, Kπ=0+ bands, Kπ=2+ γ-vibrational bands, configurations, alignments, B(M1)/B(E2) ratios. 157Dy; calculated neutron quasiparticle Routhians using cranked shell model (CSM). 154,156Dy; discussed first excited 0+ states in the core nuclei. Systematics of level energies versus spin for γ bands in 154,155,156,157,158Dy and 152,153,154,155,156Gd.
doi: 10.1103/PhysRevC.101.044312
2020YA21 Phys.Rev. C 102, 025802 (2020) W.Yahia-Cherif, S.Ouichaoui, J.Kiener, E.A.Lawrie, J.J.Lawrie, V.Tatischeff, A.Belhout, D.Moussa, P.Papka, H.Benhabiles-Mezhoud, T.D.Bucher, A.Chafa, J.L.Conradie, S.Damache, M.Debabi, I.Deloncle, J.L.Easton, C.Hamadache, F.Hammache, P.Jones, B.V.Kheswa, N.A.Khumalo, T.Lamula, S.N.T.Majola, J.Ndayishimye, D.Negi, S.P.Noncolela, N.de Sereville, J.F.Sharpey-Schafer, O.Shirinda, M.Wiedeking, S.Wyngaardt Measurement and analysis of nuclear γ-ray production cross sections in proton interactions with Mg, Si, and Fe nuclei abundant in astrophysical sites over the incident energy range E=30-66 MeV NUCLEAR REACTIONS 24Mg(p, n), (p, 3He), (p, p'), (p, d), (p, 2p), (p, α), (p, p3He), 25Mg(p, 2n), (p, p'), (p, d), (p, α), (p, t), (p, 2p), (p, 3He), (p, nα), (p, pα), 26Mg(p, 3n), (p, p'), (p, d), (p, nα), (p, t), (p, nt), (p, α), (p, nα), (p, 3He), (p, 2nα), (p, dα), 28Si(p, p'), (p, d), (p, 2p), (p, 3He), (p, p3He), (p, 2pα), (p, pα), (p, dα), (p, 2α), (p, pα3He), 29Si(p, p'), (p, d), (p, t), (p, pd), (p, α), (p, pα), (p, α3He), (p, dα), (p, tα), (p, n2α), (p, p2α), 30Si(p, d), (p, t), (p, nt), (p, α), (p, nα), (p, npα), (p, 2α), (p, tα), (p, 2α), (p, ntα), (p, 2n2α), (p, d2α), 56Fe(p, p'), (p, t), (p, d), (p, 3He), (p, α), (p, pα), E=30, 42, 54, 66 MeV; measured Eγ, Iγ, γ(θ), integrated γ-ray cross sections using natural and enriched targets and AFRODITE array with eight Compton-suppressed HPGe clover detectors at the Separated Sector Cyclotron (SSC) of iThemba LABS; deduced angular distribution coefficients and multipolarities of γ-ray transitions, branching ratios and assignments to levels in product nuclei. Comparison to theoretical predictions using the code TALYS, with modified optical model potential (OMP) parameters deformation parameters, and level density parameters. 24Mg(p, p'), E=49.5 MeV; 28Si(p, p'), E=65 MeV; 56Fe(p, p'), E=30, 65 MeV; analyzed σ(θ) data in literature using OPTMAN code; deduced optical potential model parameters, deformation parameters β2, β4 and γ. Comparison with γ-ray cross section data in literature. Discussed astrophysical implications of results of present experiment through TALYS calculation of γ-ray line emission spectra over the photon energy range of 0.1-10 MeV, expected to be generated in interactions of the low-energy cosmic rays (LECRs) in the inner Galaxy.
doi: 10.1103/PhysRevC.102.025802
2019LI49 Phys.Rev. C 100, 054309 (2019) C.Liu, S.Y.Wang, B.Qi, S.Wang, D.P.Sun, Z.Q.Li, R.A.Bark, P.Jones, J.J.Lawrie, L.Masebi, M.Wiedeking, J.Meng, S.Q.Zhang, H.Hua, X.Q.Li, C.G.Li, R.Han, S.M.Wyngaardt, B.H.Sun, L.H.Zhu, T.D.Bucher, B.V.Kheswa, K.L.Malatji, J.Ndayishimye, O.Shirinda, T.Dinoko, N.Khumalo, E.A.Lawrie, S.S.Ntshangase New candidate chiral nucleus in the A ≈ 80 mass region: 8235Br47 NUCLEAR REACTIONS 82Se(α, 3np)82Br, E=65, 68 MeV; measured Eγ, Iγ, γγ-coin, γγ(θ)(ADO), γγ(linear polarization) using the AFRODITE array at the separated-sector cyclotron (SSC) of iThemba LABS. 82Br; deduced levels, J, π, multipolarities, band structures, configurations, B(M1)/B(E2) ratios, energy staggering parameter, degenerate positive-parity chiral doublet bands; calculated valence proton and valence neutron angular momenta as functions of spin for 78,80,82Br, probability distributions for projection of total angular momentum for the chiral doublet bands in 82Br using triaxial particle rotor model (TPRM).
doi: 10.1103/PhysRevC.100.054309
2019MA64 Phys.Rev. C 100, 034322 (2019) S.N.T.Majola, R.A.Bark, L.Bianco, T.D.Bucher, S.P.Bvumbi, D.M.Cullen, P.E.Garrett, P.T.Greenlees, D.Hartley, J.Hirvonen, U.Jakobsson, P.M.Jones, R.Julin, S.Juutinen, S.Ketelhut, B.V.Kheswa, A.Korichi, E.A.Lawrie, P.L.Masiteng, B.Maqabuka, L.Mdletshe, A.Minkova, J.Ndayishimye, P.Nieminen, R.Newman, B.M.Nyako, S.S.Ntshangase, P.Peura, P.Rahkila, L.L.Riedinger, M.Riley, D.Roux, P.Ruotsalainen, J.Saren, J.F.Sharpey-Schafer, C.Scholey, O.Shirinda, A.Sithole, J.Sorri, S.Stolze, J.Timar, J.Uusitalo, G.Zimba Spectroscopy of low-spin states in 157Dy: Search for evidence of enhanced octupole correlations NUCLEAR REACTIONS 155Gd(α, 2n), E=25 MeV; measured Eγ, Iγ, γγ-coin, γγ(θ)(DCO), γγ(linear polarization) using enriched target and JUROGAM II array at Jyvaskyla. 157Dy; deduced levels, J, π, multipolarities, rotational bands, interlacing band structures, B(E1)/B(E2) ratios, reflection asymmetric structures with simplex quantum number, octupole correlations, alignments, configurations; calculated neutron quasiparticle Routhians.
doi: 10.1103/PhysRevC.100.034322
2019MA70 Phys.Rev. C 100, 044324 (2019) S.N.T.Majola, Z.Shi, B.Y.Song, Z.P.Li, S.Q.Zhang, R.A.Bark, J.F.Sharpey-Schafer, D.G.Aschman, S.P.Bvumbi, T.D.Bucher, D.M.Cullen, T.S.Dinoko, J.E.Easton, N.Erasmus, P.T.Greenlees, D.J.Hartley, J.Hirvonen, A.Korichi, U.Jakobsson, P.Jones, S.Jongile, R.Julin, S.Juutinen, S.Ketelhut, B.V.Kheswa, N.A.Khumalo, E.A.Lawrie, J.J.Lawrie, R.Lindsay, T.E.Madiba, L.Makhathini, S.M.Maliage, B.Maqabuka, K.L.Malatji, P.L.Masiteng, P.I.Mashita, L.Mdletshe, A.Minkova, L.Msebi, S.M.Mullins, J.Ndayishimye, D.Negi, A.Netshiya, R.Newman, S.S.Ntshangase, R.Ntshodu, B.M.Nyako, P.Papka, P.Peura, P.Rahkila, L.L.Riedinger, M.A.Riley, D.G.Roux, P.Ruotsalainen, J.J.Saren, C.Scholey, O.Shirinda, M.A.Sithole, J.Sorri, M.Stankiewicz, S.Stolze, J.Timar, J.Uusitalo, P.A.Vymers, M.Wiedeking, G.L.Zimba β and γ bands in N=88, 90, and 92 isotones investigated with a five-dimensional collective Hamiltonian based on covariant density functional theory: Vibrations, shape coexistence, and superdeformation NUCLEAR REACTIONS 136Xe(18O, 4n)150Sm, E=75 MeV; 148Nd(α, 2n)150Sm, E=25 MeV; 152Sm(α, 4n)152Gd, E=45 MeV; 152Sm(α, 2n)154Gd, E=25 MeV; 155Gd(3He, 4n)154Dy, E=37.5 MeV; 147Sm(12C, 3n)156Er, E=65 MeV; 155Gd(α, 3n)156Dy, E=25 MeV; 144Sm(18O, 4n)158Yb, E=78 MeV; 150Sm(12C, 4n)158Er, E=65 MeV; 156Gd(α, 2n)158Dy, E=27 MeV; 147Sm(16O, 3n)160Yb, E=73 MeV; 152Sm(12C, 4n)160Er, E=64 MeV; measured Eγ, Iγ, γγ-coin, γγ(θ)(DCO), γγ(linear polarization) using the AFRODITE array at the cyclotron facility of the iThemba Labs for 11 reactions, and JUROGAM II array at Jyvaskyla for 148Nd(α, 2n)150Sm and 155Gd(α, 3n)156Dy reactions. 150Sm, 152,154Gd, 154,156,158Dy, 156,160Er, 158,160Yb; deduced levels, J, π, multipolarities, β, γ and 0+ bands, B(E2) ratios. 150,152,154Sm, 152,154,156Gd, 154,156,158Dy, 156,158,160Er, 158,160,162Yb; calculated potential energy surfaces (PES) and probability density distribution contours in (β, γ) plane; deduced staggering parameters, in-band B(E2) values, absolute transition strengths of E0 transitions, X(E0/E2) values from present and previous experimental data. Comparison with 5DCH-CDFT calculations with PC-PK1 density functional.
doi: 10.1103/PhysRevC.100.044324
2019ND01 Phys.Rev. C 100, 014313 (2019) J.Ndayishimye, E.A.Lawrie, O.Shirinda, J.L.Easton, J.J.Lawrie, S.M.Wyngaardt, R.A.Bark, T.D.Bucher, S.P.Bvumbi, T.R.S.Dinoko, P.Jones, N.Y.Kheswa, S.N.T.Majola, P.L.Masiteng, D.Negi, J.N.Orce, J.F.Sharpey-Schafer, M.Wiedeking Competition of rotation around the intermediate and long axes in 193Tl NUCLEAR REACTIONS 160Gd(37Cl, 4n), E=167 MeV; 181Ta(18O, 6n), E=105 MeV; measured Eγ, Iγ, γγ-coin, γγ(θ)(ADO), γγ(lin pol) using AFRODITE array at iThemba LABS. 193Tl; deduced high-spin levels, J, π, alignments, rotational bands, configurations; calculated potential energy surfaces, and positive-parity quasineutron Routhians using cranked shell model calculations. Comparison with previous experimental data, and with band structures in 194Tl.
doi: 10.1103/PhysRevC.100.014313
2019SI41 Eur.Phys.J. A 55, 178 (2019) M.A.Sithole, J.F.Sharpey-Schafer, S.N.T.Majola, T.D.Bucher, T.R.S.Dinoko, S.S.Ntshangase, E.A.Lawrie, N.A.Khumalo, S.Jongile, L.Mdletshe, R.A.Bark, N.Erasmus, P.Jones, B.V.Kheswa, J.J.Lawrie, L.Makhathini, K.L.Malatji, B.Maqabuka, S.P.Noncolela, J.Ndayishimye, O.Shirinda, B.R.Zikhali, P.L.Masiteng New collective structures in the 163Yb nucleus NUCLEAR REACTIONS 152Sm(16O, 5n)163Yb, E=93 MeV; measured Eγ, Iγ using AFRODITE γ-ray spectrometer at iThemba Labs; deduced 163Yb new levels and new rotational bands, the gs based band has been extended to 43/2- spin, high-K band based on neutron [505]11/2- Nilsson orbital observed and reported for the first time, observed additional new states which all decay to the yrast band, discussed band structure with reference to Cranked Shell Model (CSM) and systematically compared with neighboring nuclei; presented table of RAD ratios, γ-ray intensities, polarization asymmetries, initial and final energies, γ-muliplicities; deduced level schemes and transitions, bands 1 to 8, coincidenced (gated) γ-ray spectra, aligned angular momenta deduced for bands in 163Yb vs rotational energy.
doi: 10.1140/epja/i2019-12866-3
2018MD01 Eur.Phys.J. A 54, 176 (2018) L.Mdletshe, S.S.Ntshangase, J.F.Sharpey-Schafer, S.N.T.Majola, T.R.S.Dinoko, N.A.Khumalo, E.A.Lawrie, R.A.Bark, T.D.Bucher, N.Erasmus, P.Jones, S.Jongile, B.V.Kheswa, J.J.Lawrie, L.Makhathini, K.L.Malatji, B.Maqabuka, J.Ndayishimye, S.P.Noncolela, O.Shirinda, M.A.Sithole Low-lying positive parity bands in 162Yb NUCLEAR REACTIONS 150Sm(16O, 4n)162Yb, E=85 MeV; measured Eγ, Iγ, γγ-coin, γγ(θ)(DCO), γγ(linear polarization) using the AFRODITE array at the cyclotron facility of the iThemba Labs; deduced levels, J, π, multipolarities, γ and second 0+ bands, and staggering parameters.
doi: 10.1140/epja/i2018-12613-4
2017ND01 Acta Phys.Pol. B48, 343 (2017) J.Ndayishimye, E.A.Lawrie, O.Shirinda, J.L.Easton, S.M.Wyngaardt, R.A.Bark, S.P.Bvumbi, T.R.S.Dinoko, P.Jones, N.Y.Kheswa, J.J.Lawrie, S.N.T.Majola, P.L.Masiteng, D.Negi, J.N.Orce, P.Papka, J.F.Sharpey-Schafer, M.Stankiewicz, M.Wiedeking Chiral Bands in 193Tl NUCLEAR REACTIONS 160Gd(37Cl, 4n), E=167 MeV;181Ta(18O, 6n), E=105 MeV; measured Eγ, Iγ, γγ-coin using 9 clovers at different angles. 193Tl; deduced level, J, π, high-spin, γ transitions, B(M1), B(E2), formed one or two chiral systems.
doi: 10.5506/APhysPolB.48.343
2016LI12 Phys.Rev.Lett. 116, 112501 (2016) C.Liu, S.Y.Wang, R.A.Bark, S.Q.Zhang, J.Meng, B.Qi, P.Jones, S.M.Wyngaardt, J.Zhao, C.Xu, S.-G.Zhou, S.Wang, D.P.Sun, L.Liu, Z.Q.Li, N.B.Zhang, H.Jia, X.Q.Li, H.Hua, Q.B.Chen, Z.G.Xiao, H.J.Li, L.H.Zhu, T.D.Bucher, T.Dinoko, J.Easton, K.Juhasz, A.Kamblawe, E.Khaleel, N.Khumalo, E.A.Lawrie, J.J.Lawrie, S.N.T.Majola, S.M.Mullins, S.Murray, J.Ndayishimye, D.Negi, S.P.Noncolela, S.S.Ntshangase, B.M.Nyako, J.N.Orce, P.Papka, J.F.Sharpey-Schafer, O.Shirinda, P.Sithole, M.A.Stankiewicz, M.Wiedeking Evidence for Octupole Correlations in Multiple Chiral Doublet Bands NUCLEAR REACTIONS 70Zn(12C, 3np), E=60, 65 MeV; measured reaction products, Eγ, Iγ, γ-γ-coin.; deduced energy levels, J, π, medium- amd high-spin states, yrast positive- and negative-parity bands. Comparison with microscopic multidimensionally-constrained covariant density functional theory and triaxial particle rotor model calculations.
doi: 10.1103/PhysRevLett.116.112501
2016LI41 Phys.Rev. C 94, 024337 (2016) X.Q.Li, C.Xu, S.Q.Zhang, H.Hua, J.Meng, R.A.Bark, Q.B.Chen, C.Y.Niu, R.Han, S.M.Wyngaardt, S.Y.Wang, S.Wang, B.Qi, L.Liu, L.H.Zhu, Z.Shi, G.L.Zhang, B.H.Sun, X.Y.Le, C.Y.Song, Y.L.Ye, D.X.Jiang, F.R.Xu, Z.H.Li, J.J.Sun, Y.Shi, P.W.Zhao, W.Y.Liang, C.G.Li, C.G.Wang, X.C.Chen, Z.H.Li, D.P.Sun, C.Liu, Z.Q.Li, P.Jones, E.A.Lawrie, J.J.Lawrie, M.Wiedeking, T.D.Bucher, T.Dinoko, B.V.Kheswa, L.Makhathini, S.N.T.Majola, J.Ndayishimye, S.P.Noncolela, O.Shirinda, J.Gal, G.Kalinka, J.Molnar, B.M.Nyako, J.Timar, K.Juhasz, M.Arogunjo Spectroscopy of 155Yb: Structure evolution in the N=85 isotones NUCLEAR REACTIONS 144Sm(16O, 5n), E=118 MeV; measured Eγ, Iγ, γγ-coin, γγ(θ)(ADO ratios) at cyclotron facility of iThemba LABS. 155Yb; deduced high-spin levels, J, π, multipolarity, bands, configurations; calculated potential energy contour in (β, γ) plane. Comparison with semiempirical shell-model (SESM) calculations. Predicted coexistence of prolate and oblate shapes from adiabatic and configuration-fixed constrained triaxial covariant density functional theory (CDFT) calculations. Systematics of low-lying levels in N=84-87 isotones: 148,149,150,151Gd, 150,151,152,153Dy, 152,153,154,155Er, 154,155,156,157Yb, 156,157,158,159Hf.
doi: 10.1103/PhysRevC.94.024337
2016MA13 Eur.Phys.J. A 52, 28 (2016) P.L.Masiteng, A.A.Pasternak, E.A.Lawrie, O.Shirinda, J.J.Lawrie, R.A.Bark, S.P.Bvumbi, N.Y.Kheswa, R.Lindsay, E.O.Lieder, R.M.Lieder, T.E.Madiba, S.M.Mullins, S.H.T.Murray, J.Ndayishimye, S.S.Ntshangase, P.Papka, J.F.Sharpey-Schafer DSAM lifetime measurements for the chiral pair in 194Tl NUCLEAR REACTIONS 181Ta(18O, 5n), E=91 MeV; calculated high-spin states, J, π, B(M1), B(E2) vs spin, energy vs spin for different rotational bands using recent data measured by the same group with Doppler Shift Attenuation Method (DSAM); deduced T1/2 of de-excitation of high-spin states belonging to different rotational bands. B(E2), B(M1) compared to data.
doi: 10.1140/epja/i2016-16028-y
2016NE08 Phys.Rev. C 94, 024332 (2016) D.Negi, M.Wiedeking, E.G.Lanza, E.Litvinova, A.Vitturi, R.A.Bark, L.A.Bernstein, D.L.Bleuel, S.Bvumbi, T.D.Bucher, B.H.Daub, T.S.Dinoko, J.L.Easton, A.Gorgen, M.Guttormsen, P.Jones, B.V.Kheswa, N.A.Khumalo, A.C.Larsen, E.A.Lawrie, J.J.Lawrie, S.N.T.Majola, L.P.Masiteng, M.R.Nchodu, J.Ndayishimye, R.T.Newman, S.P.Noncolela, J.N.Orce, P.Papka, L.Pellegri, T.Renstrom, D.G.Roux, R.Schwengner, O.Shirinda, S.Siem Nature of low-lying electric dipole resonance excitations in 74Ge NUCLEAR REACTIONS 74Ge(α, α'), E=48 MeV; measured Eγ, Iγ, Eα, αγ-coin, γ(θ), σ(θ) for scattered α particles, relative cross sections of E1 transitions using AFRODITE array for γ detection and silicon detectors for α particles at iThemba Labs cyclotron facility. 74Ge; deduced levels, J, π, B(E1), suppression in relative cross section for the excitation of pygmy-dipole resonances (PDR) as compared to those in (γ, γ') data for excitations above 6 MeV. Comparison of B(E1) with relativistic quasiparticle time blocking approximation (RQTBA) calculations.
doi: 10.1103/PhysRevC.94.024332
2016OR06 Eur.Phys.J. A 52, 166 (2016) J.N.Orce, M.Kumar Raju, N.A.Khumalo, T.S.Dinoko, P.Jones, R.A.Bark, E.A.Lawrie, S.N.T.Majola, L.M.Robledo, B.Rubio, M.Wiedeking, J.Easton, E.A.Khaleel, B.V.Kheswa, N.Kheswa, M.S.Herbert, J.J.Lawrie, P.L.Masiteng, M.R.Nchodu, J.Ndayishimye, D.Negi, S.P.Noncolela, S.S.Ntshangase, P.Papka, D.G.Roux, O.Shirinda, P.S.Sithole, S.W.Yates Search for two-phonon octupole excitations in 146Gd NUCLEAR REACTIONS 144Sm(α, 2n), E=26.1-26.8 MeV; measured Eγ, Iγ(θ), γγ-coin. 148Gd deduced γ-ray energy spectra gated by specified γ transitions, relative γ intensities in depopulating the 6+ (3484.5 keV) state, linear polarization, B(E3) for one-photon and two-photon excitations; calculated B(E3) using GCM with Gogny D1S force.
doi: 10.1140/epja/i2016-16166-2
2015XU09 Phys.Rev. C 91, 061303 (2015) C.Xu, X.Q.Li, J.Meng, S.Q.Zhang, H.Hua, S.Y.Wang, B.Qi, C.Liu, Z.G.Xiao, H.J.Li, L.H.Zhu, Z.Shi, Z.H.Li, Y.L.Ye, D.X.Jiang, J.J.Sun, Z.H.Zhang, Y.Shi, P.W.Zhao, Q.B.Chen, W.Y.Liang, R.Han, C.Y.Niu, C.G.Li, C.G.Wang, Z.H.Li, S.M.Wyngaardt, R.A.Bark, P.Papka, T.D.Bucher, A.Kamblawe, E.Khaleel, N.Khumalo, E.A.Lawrie, J.J.Lawrie, P.Jones, S.M.Mullins, S.Murray, M.Wiedeking, J.F.Sharpey-Schafer, S.N.T.Majola, J.Ndayishimye, D.Negi, S.P.Noncolela, S.S.Ntshangase, O.Shirinda, P.Sithole, M.A.Stankiewicz, J.N.Orce, T.Dinoko, J.Easton, B.M.Nyako, K.Juhasz Spectroscopy of 76Se: Prolate-to-oblate shape transition NUCLEAR REACTIONS 70Zn(12C, 2nα), E=60, 65 MeV; measured Eγ, Iγ, γγ-, (particle)γγ-coin using AFRODITE array for γ rays and DIAMANT array for charged particles at iThemba LABS. 76Se; deduced high-spin levels, J, π, bands, configuration, kinematic and dynamic moments of inertia, band crossing frequency, shape transition. Comparison with cranked shell-model calculations. systematics of band crossings in 70,72,74,76,78,80Se, 72,74,76,78,80,82Kr.
doi: 10.1103/PhysRevC.91.061303
2010WY02 J.Phys.:Conf.Ser. 205, 012013 (2010) S.M.Wyngaardt, H.W.Groenewald, T.T.Ibrahim, J.Ndayishimye, S.M.Perez Relativistic mean field formulation of clustering in heavy nuclei NUCLEAR STRUCTURE 212Po; calculated levels, J, π, T1/2 using microscopic RMFT with BCM (binary cluster model) and also with M3Y and double folded RMFT. Compared with data.
doi: 10.1088/1742-6596/205/1/012013
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