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NSR database version of April 11, 2024.

Search: Author = T.E.Madiba

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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
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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 T_1/2 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
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2014BA29      Int.J.Mod.Phys. E23, 1461001 (2014)

R.A.Bark, E.O.Lieder, R.M.Lieder, E.A.Lawrie, J.J.Lawrie, S.P.Bvumbi, N.Y.Kheswa, S.S.Ntshangase, T.E.Madiba, P.L.Masiteng, S.M.Mullins, S.Murray, P.Papka, O.Shirinda, Q.B.Chen, S.Q.Zhang, Z.H.Zhang, P.W.Zhao, C.Xu, J.Meng, D.G.Roux, Z.P.Li, J.Peng, B.Qi, S.Y.Wang, Z.G.Xiao

Studies of chirality in the mass 80, 100 and 190 regions

NUCLEAR REACTIONS ⁹⁶Zr(¹⁴N, 4n)¹⁰⁶Ag, E not given; measured reaction products, Eγ, Iγ; deduced levels, J, π, T_1/2, chiral bands, B(M1), B(E2). Comparison with particle-rotor calculations.

doi: 10.1142/S0218301314610011
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2014LI19      Phys.Rev.Lett. 112, 202502 (2014)

E.O.Lieder, R.M.Lieder, R.A.Bark, Q.B.Chen, S.Q.Zhang, J.Meng, E.A.Lawrie, J.J.Lawrie, S.P.Bvumbi, N.Y.Kheswa, S.S.Ntshangase, T.E.Madiba, P.L.Masiteng, S.M.Mullins, S.Murray, P.Papka, D.G.Roux, O.Shirinda, Z.H.Zhang, P.W.Zhao, Z.P.Li, J.Peng, B.Qi, S.Y.Wang, Z.G.Xiao, C.Xu

Resolution of Chiral Conundrum in ¹⁰⁶Ag: Doppler-Shift Lifetime Investigation

NUCLEAR REACTIONS ⁹⁶Zr(¹⁴N, 4n), E=71 MeV; measured reaction products, Eγ, Iγ, γ-γ-coin.; deduced level scheme, J, π, high spin negative parity bands, B(M1), B(E2). Particle-rotor model calculations.

doi: 10.1103/PhysRevLett.112.202502
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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
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2011PA15      Int.J.Mod.Phys. E20, 1034 (2011)

P.Papka, F.Nemulodi, R.A.Bark, N.Y.Kheswa, E.A.Lawrie, J.J.Lawrie, E.O.Lieder, R.M.Lieder, T.E.Madiba, S.M.Mullins, R.T.Newman, T.T.Ibrahim, O.Shirinda, T.D.Singo, R.Alvarez-Rodriguez, J.Gal, G.Kalinka, J.Molnar, B.M.Nyako, J.Timar, S.P.Fox

Experimental investigation of ⁶Be cluster decay

RADIOACTIVITY ⁶Be(α) [from ⁶Li(³He, t)⁶Be, E=50 MeV]; measured proton spectrum, Eα, Iα; deduced two-body decay from resonant state.

doi: 10.1142/S0218301311019210
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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
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2011SH08      Eur.Phys.J. A 47, 6 (2011)

J.F.Sharpey-Schafer, T.E.Madiba, S.P.Bvumbi, E.A.Lawrie, J.J.Lawrie, A.Minkova, S.M.Mullins, P.Papka, D.G.Roux, J.Timar

Blocking of coupling to the 0⁺₂ excitation in ¹⁵⁴Gd by the (505)11/2^- neutron in ¹⁵⁵Gd

NUCLEAR REACTIONS ¹⁵⁴Sm(α, 3n), E=35 MeV; measured Eγ, Iγ, γγ-coin using AFRODITE spectrometer. ^154,155Gd deduced bands, γ vibration, quadrupole pairing forces, oblate orbitals, blocking of collective modes.

doi: 10.1140/epja/i2011-11006-7
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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
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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
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2010PA11      Phys.Rev. C 81, 054308 (2010)

P.Papka, R.Alvarez-Rodriguez, F.Nemulodi, R.A.Bark, S.P.Fox, J.Gal, T.T.Ibrahim, G.Kalinka, N.Y.Kheswa, E.A.Lawrie, J.J.Lawrie, E.O.Lieder, R.M.Lieder, T.E.Madiba, J.Molnar, S.M.Mullins, R.T.Newman, B.M.Nyako, O.Shirinda, T.D.Singo, J.Timar

Decay of ⁶Be populated in the ⁶Li(³He, ³H) charge-exchange reaction

NUCLEAR REACTIONS ⁶Li(³He, t)⁶Be, E=50 MeV; measured particle spectra, (particle)(particle)-coin, angular distributions; deduced particle-particle correlations and Dalitz plots for the α-p-p breakup particles from ⁶Be. Comparison with sequential and 3-body resonance calculations.

doi: 10.1103/PhysRevC.81.054308
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2010SH16      Nucl.Phys. A834, 45c (2010)

J.F.Sharpey-Schafer, R.A.Bark, S.P.Bvumbi, E.A.Lawrie, J.J.Lawrie, T.E.Madiba, S.N.T.Majola, A.Minkova, S.M.Mullins, P.Papka, D.G.Roux, J.Timar

A double vacuum, configuration dependent pairing and lack of β-vibrations in transitional nuclei: Band structure of N = 88 to N = 91 Nuclei

NUCLEAR REACTIONS ^152,154Sm(α, 4n), E=45 MeV; ¹⁵²Sm(α, 2n), E=25 MeV; ¹⁵⁴Sm(α, 3n), E=35 MeV; measured Eγ, Iγ, γγ-coin, polarization. ^152,154,155Gd; deduced levels, J, π, rotational bands, bands.

doi: 10.1016/j.nuclphysa.2009.12.014
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