NSR Query Results
Output year order : Descending NSR database version of April 11, 2024. Search: Author = P.Vymers Found 17 matches. 2019LA20 Phys.Rev. C 100, 064321 (2019) J.J.Lawrie, E.A.Lawrie, B.Msezane, M.Benatar, M.Fedderke, G.K.Mabala, S.Mukherjee, S.M.Mullins, K.P.Mutshena, N.J.Ncapayi, R.T.Newman, J.F.Sharpey-Schafer, F.D.Smit, P.Vymers Rotational structures in 196Hg NUCLEAR REACTIONS 198Pt(α, 6n)196Hg, E=67 MeV; measured Eγ, Iγ, γγ-coin, γγ(θ)(ADO), γγ-linear polarization using the AFRODITE array at iThemba labs. 196Hg; deduced levels, J, π, multipolarities, bands, configurations, alignments, routhians, B(M1)/B(E2) ratios; calculated quasiparticle Routhians for neutrons and protons and alignments using cranked shell model. Comparison with previous experimental results.
doi: 10.1103/PhysRevC.100.064321
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
2014MA55 Eur.Phys.J. A 50, 119 (2014) P.L.Masiteng, E.A.Lawrie, T.M.Ramashidzha, J.J.Lawrie, R.A.Bark, R.Lindsay, F.Komati, J.Kau, P.Maine, S.M.Maliage, I.Matamba, S.M.Mullins, S.H.T.Murray, K.P.Mutshena, A.A.Pasternak, D.G.Roux, J.F.Sharpey-Schafer, O.Shirinda, P.A.Vymers Rotational bands and chirality in 194Tl NUCLEAR REACTIONS 181Ta(18O, 5n), E=91, 93 MeV; measured Eγ, Iγ(θ), γγ-coin using γ-ray AFRODITE; deduced γ transitions, angular distribution, polarization anisotropy, transition multipolarity, levels, J, π, rotational bands, B(M1), B(E2).
doi: 10.1140/epja/i2014-14119-5
2014PA50 Eur.Phys.J. A 50, 158 (2014) P.Papka, J.F.Sharpey-Schafer, B.A.Brown, T.S.Dinoko, E.A.M.A.Khaleel, E.A.Lawrie, J.J.Lawrie, K.C.W.Li, S.N.T.Majola, W.A.Richter, O.Shirinda, M.A.Stankiewicz, P.Vymers, M.Wiedeking High-resolution two-proton stripping to 2p-1h 7/2- states via the 59Co(3He, n γ)61Cu reaction NUCLEAR REACTIONS 59Co(3He, nγ), E=22.5 MeV; measured Eγ, Iγ, nγ-coin using AFRODITE escape-suppressed spectrometer, HPGe Clover detectors in BGO shields, neutrons using NE102A plastic scintillators; deduced γ-ray spectra, coincidence n-γ spectra, gated γ spectra, population strengths, branching ratio, levels, J, π, γ transitions, single-proton states outside 60Ni.
doi: 10.1140/epja/i2014-14158-x
2013BV01 Phys.Rev. C 87, 044333 (2013) S.P.Bvumbi, J.F.Sharpey-Schafer, P.M.Jones, S.M.Mullins, B.M.Nyako, K.Juhasz, R.A.Bark, L.Bianco, D.M.Cullen, D.Curien, P.E.Garrett, P.T.Greenlees, J.Hirvonen, U.Jakobsson, J.Kau, F.Komati, R.Julin, S.Juutinen, S.Ketelhut, A.Korichi, E.A.Lawrie, J.J.Lawrie, M.Leino, T.E.Madiba, S.N.T.Majola, P.Maine, A.Minkova, N.J.Ncapayi, P.Nieminen, P.Peura, P.Rahkila, L.L.Riedinger, P.Ruotsalainen, J.Saren, C.Scholey, J.Sorri, S.Stolze, J.Timar, J.Uusitalo, P.A.Vymers Octupole correlations in the structure of 02+ bands in the N=88 nuclei 150Sm and 152Gd NUCLEAR REACTIONS 152Sm(α, 4n), E=45 MeV; 148Nd(α, 2n), E=25 MeV; measured Eγ, Iγ, γγ-coin, γγ(θ)(DCO), γ(θ, lin pol) using the AFRODITE at iThemba LABS, and JUROGAM II arrays at Jyvaskyla. 150Sm, 152Gd; deduced high-spin levels, J, π, bands, B(E1)/B(E2). Comparison of rotational frequencies with those in 220Rn bands. Permanent octupole deformation in first excited Kπ=0+ band. Comparison with Frauendorf's tidal wave model.
doi: 10.1103/PhysRevC.87.044333
2013MA03 Phys.Lett. B 719, 83 (2013) P.L.Masiteng, E.A.Lawrie, T.M.Ramashidzha, R.A.Bark, B.G.Carlsson, J.J.Lawrie, R.Lindsay, F.Komati, J.Kau, P.Maine, S.M.Maliage, I.Matamba, S.M.Mullins, S.H.T.Murray, K.P.Mutshena, A.A.Pasternak, I.Ragnarsson, D.G.Roux, J.F.Sharpey-Schafer, O.Shirinda, P.A.Vymers Close near-degeneracy in a pair of four-quasiparticle bands in 194Tl NUCLEAR REACTIONS 181Ta(18O, X)194Tl, E=91, 93 MeV; measured reaction products, Eγ, Iγ; deduced energy levels, J, π, rotational bands, high-spin states, B(M1)/B(E2) ratios. Comparison with available data. COMPILATION 194Tl, 135Nd, 128Cs, 104Rh; compiled difference in excitation energies, alignments, B(M1)/B(E2) ratios.
doi: 10.1016/j.physletb.2013.01.006
2011SH07 Eur.Phys.J. A 47, 5 (2011) J.F.Sharpey-Schafer, S.M.Mullins, R.A.Bark, J.Kau, F.Komati, E.A.Lawrie, J.J.Lawrie, T.E.Madiba, P.Maine, A.Minkova, S.H.T.Murray, N.J.Ncapayi, P.A.Vymers Congruent band structures in 154Gd : Configuration-dependent pairing, a double vacuum and lack of β-vibrations NUCLEAR REACTIONS 152Sm(α, 2n), E=25 MeV;154Sm(α, 4n), E=45 MeV; measured Eγ, Iγ, γγ-coin, polarization using spectrometer array AFRODITE; deduced levels, J, π, bands, rotational bands. Levels and bands compared to 152Sm.
doi: 10.1140/epja/i2011-11005-8
2010BA02 Phys.Rev.Lett. 104, 022501 (2010) R.A.Bark, J.F.Sharpey-Schafer, S.M.Maliage, T.E.Madiba, F.S.Komati, E.A.Lawrie, J.J.Lawrie, R.Lindsay, P.Maine, S.M.Mullins, S.H.T.Murray, N.J.Ncapayi, T.M.Ramashidza, F.D.Smit, P.Vymers Nonzero Quadrupole Moments of Candidate Tetrahedral Bands NUCLEAR REACTIONS 152Sm(α, 2n), 147Sm(16O, 3n), E=25, 73 MeV; measured Eγ, Iγ, γγ-coin.; deduced the lowest-energy negative-parity bands in 160Yb and 154Gd. Comparison with band-mixing calculations.
doi: 10.1103/PhysRevLett.104.022501
2010BA25 Nucl.Phys. A834, 58c (2010) R.A.Bark, J.F.Sharpey-Schafer, S.M.Maliage, T.E.Madiba, F.S.Komati, E.A.Lawrie, J.J.Lawrie, R.Lindasy, P.Maine, S.M.Mullins, S.H.T.Murray, N.J.Ncapayi, T.M.Ramashidza, F.D.Smit, P.Vymers Physics at low spin in the mass 160 region: the search for tetrahedral shapes NUCLEAR REACTIONS 152Sm(α, 2n), E=cyclotron; 147Sm(16O, 3n), E=cyclotron; measured Eγ, Iγ, γγ-coin. 160Yb; deduced levels, J, π. 154Gd, 160Yb; deduced bands, aligned angular momenta.
doi: 10.1016/j.nuclphysa.2010.01.017
2010LA15 Eur.Phys.J. A 45, 39 (2010) E.A.Lawrie, P.A.Vymers, Ch.Vieu, J.J.Lawrie, C.Schuck, R.A.Bark, R.Lindsay, G.K.Mabala, S.M.Maliage, P.L.Masiteng, S.M.Mullins, S.H.T.Murray, I.Ragnarsson, T.M.Ramashidzha, J.F.Sharpey-Schafer, O.Shirinda Candidate chiral bands in 198Tl NUCLEAR REACTIONS 197Au(α, 3n), E=40 MeV; measured Eγ, Iγ(θ), E(ce), I(ce), (ce)γ-coin, γγ-coin, polarization anisotropy. 198Tl; deduced γ transitions, multipolarities, internal-conversion X-rays, levels, J, π, B(M1), B(E2) for yrast and side bands; calculated levels, J, π, B(M1), B(E2) for yrast and side bands, rotation-angular momentum angle.
doi: 10.1140/epja/i2010-10994-x
2009MA27 Acta Phys.Pol. B40, 657 (2009) P.L.Masiteng, E.A.Lawrie, T.M.Ramashidzha, J.J.Lawrie, R.A.Bark, J.Kau, F.Komati, S.M.Maliage, I.Matamba, S.M.Mullins, S.H.T.Murray, K.P.Mutshena, J.F.Sharpey-Schafer, P.Vymers, Y.Zhang Possible Chiral Bands in the Doubly-Odd 194Tl Nucleus NUCLEAR REACTIONS 181Ta(18O, 5n), E=91, 93 MeV; measured Eγ, Iγ, γγ-coin; deduced J, π, band structure, B(M1)/B(E2).
2008LA11 Phys.Rev. C 78, 021305 (2008) E.A.Lawrie, P.A.Vymers, J.J.Lawrie, Ch.Vieu, R.A.Bark, R.Lindsay, G.K.Mabala, S.M.Maliage, P.L.Masiteng, S.M.Mullins, S.H.T.Murray, I.Ragnarsson, T.M.Ramashidzha, C.Schuck, J.F.Sharpey-Schafer, O.Shirinda Possible chirality in the doubly-odd 198Tl nucleus: Residual interaction at play NUCLEAR REACTIONS 197Au(α, 3n), E=40 MeV; measured Eγ, Iγ, E(CE), I(CE), γγ-, (ce)γ-coin. 198Tl; deduced levels, J, π, quasiparticle alignments, band configurations, B(E2), B(M1), chiral behaviour. Comparison with 2-quasiparticle plus triaxial rotor model calculations.
doi: 10.1103/PhysRevC.78.021305
2007LA22 Acta Phys.Pol. B38, 1417 (2007) E.A.Lawrie, P.Vymers, Ch.Vieu, J.J.Lawrie, C.Schuck, R.A.Bark, R.Lindsay, S.M.Maliage, S.M.Mullins, S.H.T.Murray, T.M.Ramashidzha, J.F.Sharpey-Schafer Pair of Bands in the Oblate Doubly-Odd 198Tl Nucleus NUCLEAR REACTIONS 197Au(α, 3n)198Tl, E=40 MeV; measured Eγ, Iγ, γγ-coinc. 198Tl deduced levels, J, π.
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2006MU17 Phys.Scr. T125, 208 (2006) S.M.Mullins, R.A.Bark, J.Gal, E.Gueorguieva, T.Hlatshwayo, K.Juhasz, G.Kalinka, F.S.Komati, A.Krasznahorkay, J.J.Lawrie, M.Lipoglavsek, S.M.Maliage, T.Malwela, J.Molnar, S.H.T.Murray, S.Ntshangase, B.A.Nyako, M.Ramashidza, J.F.Sharpey-Schafer, J.N.Scheurer, O.Shirinda, J.Timar, P.Vymers, L.Zolnai From Cape to Hortobagy: the marriage of DIAMANT with AFRODITE
doi: 10.1088/0031-8949/2006/T125/054
2005NC01 Eur.Phys.J. A 26, 265 (2005) N.J.Ncapayi, S.M.Mullins, M.Benatar, E.Gueorgueiva, J.J.Lawrie, G.K.Mabala, S.Mukherjee, S.H.T.Murray, K.P.Mutshena, R.T.Newman, J.F.Sharpey-Schafer, F.D.Smit, P.Vymers Characterization of quasiparticle states at and beyond stability in ytterbium isotopes: Spectroscopy of 175Yb, 176Yb and 177Yb NUCLEAR REACTIONS 176Yb(136Xe, X)175Yb/176Yb/177Yb, E=750 MeV; measured Eγ, Iγ, γγ-coin. 175,176,177Yb deduced high-spin levels, J, π, configurations, gK-gR. Afrodite array.
doi: 10.1140/epja/i2005-10172-5
2004GU06 Eur.Phys.J. A 20, 47 (2004) E.Gueorguieva, J.J.Lawrie, P.Mutshena, M.Benatar, W.Damon, P.Kwinana, G.K.Mabala, S.Mukherjee, S.M.Mullins, N.J.Ncapayi, R.T.Newman, D.G.Roux, F.D.Smit, J.F.Sharpey-Schafer, Z.Vilakazi, P.Vymers New nanosecond isomers identified with the AFRODITE array NUCLEAR REACTIONS 198Pt(α, 6n), E=65 MeV; 142Nd(27Al, 5n), E=150 MeV; measured prompt and delayed Eγ, Iγ, γγ-coin. 196Hg, 164Ta deduced isomeric states features. Afrodite array, recoil shadow anisotropy method.
doi: 10.1140/epja/i2002-10320-5
2004LI58 Phys.Lett. B 593, 61 (2004) M.Lipoglavsek, R.A.Bark, M.Benatar, E.Gueorguieva, J.Kau, F.Komati, P.Kwinana, J.J.Lawrie, G.K.Mabala, P.Maine, S.Mukherjee, S.M.Mullins, S.Murray, N.J.Ncapayi, R.T.Newman, P.Vymers High resolution measurement of the 208Pb(p, γ) capture reaction up to Eγ = 19 MeV NUCLEAR REACTIONS 208Pb(p, γ), E=11.3-14.8 MeV; measured Eγ, Iγ, σ(E, θ). 209Bi deduced levels, J, π.
doi: 10.1016/j.physletb.2004.04.074
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