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NSR database version of April 27, 2024.

Search: Author = E.Y.Yeoh

Found 17 matches.

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2015LI15      Eur.Phys.J. A 51, 60 (2015)

H.J.Li, Z.G.Xiao, S.J.Zhu, C.Qi, E.Y.Yeoh, Z.Zhang, R.S.Wang, H.Yi, W.H.Yan, Q.Xu, X.G.Wu, C.Y.He, Y.Zheng, G.S.Li, C.B.Li, H.W.Li, J.J.Liu, S.P.Hu, J.L.Wang, S.H.Yao

Reinvestigation of the collective band structures in odd-odd ¹³⁸Pm nucleus

NUCLEAR REACTIONS ¹²⁴Te(¹⁹F, 5n), E=99-105 MeV; measured Eγ, Iγ(θ), γγ-coin using Compton-suppressed HPGe, planar HPGe and clover detector; deduced γ transitions, γ transition multipolarity, levels, J, π, high-spin states, rotational bands, yrast band using RADWARE software package for γγ-coin; calculated intrinsic configurations using TRS (total Routhian surface), inertia moments, B(M1)/B(E2), deformation using triaxial quasiparticle-rotor model.

doi: 10.1140/epja/i2015-15060-9
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2013LI24      Phys.Rev. C 87, 057303 (2013)

H.J.Li, Z.G.Xiao, S.J.Zhu, E.Y.Yeoh, Y.X.Liu, Y.Sun, Z.Zhang, R.S.Wang, H.Yi, W.H.Yan, Q.Xu, X.G.Wu, C.Y.He, Y.Zheng, G.S.Li, C.B.Li, H.W.Li, J.J.Liu, S.P.Hu, J.L.Wang, S.H.Yao

Multiphonon γ-vibrational bands in the γ-soft nucleus ¹³⁸Nd

NUCLEAR REACTIONS ¹²⁴Te(¹⁹F, 4np), E=103 MeV; measured Eγ, Iγ, γγ-coin, γγ(θ)(DCO) at CIAE facility. ¹³⁸Nd; deduced levels, J, π, multipolarity, multiphonon γ-vibrational bands, γ softness; calculated bandhead energies as a function of triaxiality. Comparison with cranked shell-model and, triaxial projected shell-model calculations. Systematics of bandhead energies of one- and two-γ vibrational bands in ^104,106Mo, ¹³⁸Nd, ¹⁵⁴Gd, ¹⁶⁸Er.

doi: 10.1103/PhysRevC.87.057303
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2012LI54      Phys.Rev. C 86, 067302 (2012)

H.J.Li, S.J.Zhu, J.H.Hamilton, A.V.Ramayya, J.K.Hwang, Z.G.Xiao, M.Sakhaee, J.Y.Guo, S.W.Chen, N.T.Brewer, S.H.Liu, K.Li, E.Y.Yeoh, Z.Zhang, Y.X.Luo, J.O.Rasmussen, I.Y.Lee, G.Ter-Akopian, A.Daniel, Yu.Ts.Oganessian, W.C.Ma

Identification of a new side-band and proposed octupole correlations in very neutron-rich ¹⁵²Ce

RADIOACTIVITY ²⁵²Cf(SF); measured prompt γ spectrum, Eγ, Iγ, γγ-coin using Gammasphere array at LBNL. ¹⁵²Ce; deduced high-spin levels, J, p, rotational bands, β₂ and β₃ deformations, B(E1)/B(E2) ratios, moments of inertia plots, octupole band with s=+1. Comparison with calculations in a reflection asymmetric relativistic mean-field (RAS-RMF) approach. Calculated β₂ versus β₃ contour plot.

doi: 10.1103/PhysRevC.86.067302
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2012YE06      Phys.Rev. C 85, 064322 (2012)

E.Y.Yeoh, S.J.Zhu, J.G.Wang, Z.G.Xiao, M.Zhang, W.H.Yan, R.S.Wang, Q.Xu, X.G.Wu, C.Y.He, G.S.Li, Y.Zheng, C.B.Li, X.P.Cao, S.P.Hu, S.H.Yao, B.B.Yu

High-spin structures in the ¹³⁹Pr nucleus

NUCLEAR REACTIONS ¹²⁴Sn(¹⁹F, 4n)¹³⁹Pr, E=80 MeV; measured Eγ, Iγ, γγ-coin, DCO. ¹³⁹Pr; deduced high-spin levels, J, π, bands, configurations, multipolarity; calculated total Routhian surface. Systematics of the low-spin levels in N=80 isotones of ¹³⁷La, ¹³⁶Ba, ¹³⁸Ce, ¹³⁹Pr, ¹⁴⁰Nd, ¹⁴¹Pm; and moments of inertia for bands in ^131,137La, ^137,139Pr, ¹³²Ba, ¹³⁴Ce.

doi: 10.1103/PhysRevC.85.064322
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2012ZH03      Phys.Rev. C 85, 014330 (2012)

S.J.Zhu, M.Sakhaee, J.H.Hamilton, A.V.Ramayya, N.T.Brewer, J.K.Hwang, S.H.Liu, E.Y.Yeoh, Z.G.Xiao, Q.Xu, Z.Zhang, Y.X.Luo, J.O.Rasmussen, I.Y.Lee, K.Li, W.C.Ma

Observation of new levels and proposed octupole correlations in neutron-rich ¹⁵⁰Ce

RADIOACTIVITY ²⁵²Cf(SF); measured Eγ, Iγ, γγ-coin, γγ(θ) using Gammasphere array. ¹⁵⁰Ce; deduced levels, J, π, multipolarity, high-spin rotational bands, B(E1)/B(E2) ratios, octupole bands. Systematics of octupole bands and moments of inertia plots in ^{144,146,148,150}Ce.

doi: 10.1103/PhysRevC.85.014330
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2011GU12      Phys.Rev. C 83, 064303 (2011)

L.Gu, S.J.Zhu, J.G.Wang, E.Y.Yeoh, Z.G.Xiao, S.Q.Zhang, J.Meng, M.Zhang, Y.Lou, H.B.Ding, Q.Xu, L.H.Zhu, X.G.Wu, C.Y.He, G.S.Li, L.L.Wang, Y.Zheng, B.Zhang

Observation of high-spin oblate band structures in ¹⁴¹Pm

NUCLEAR REACTIONS ¹²⁶Te(¹⁹F, 4n), E=90 MeV; measured Eγ, Iγ, γγ-coin, DCO. ¹⁴¹Pm; deduced levels, J, π, high-spin oblate bands, moments of inertia, multipolarity. Comparison with MRPM (triaxial n-particle-n-hole particle rotor model) calculations; and with systematics of moments of inertia plots for ¹³²Ba, ^131,136La and ^134,136Ce.

doi: 10.1103/PhysRevC.83.064303
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2011LI25      Phys.Rev. C 83, 064310 (2011)

S.H.Liu, J.H.Hamilton, A.V.Ramayya, Y.S.Chen, Z.C.Gao, S.J.Zhu, L.Gu, E.Y.Yeoh, N.T.Brewer, J.K.Hwang, Y.X.Luo, J.O.Rasmussen, W.C.Ma, J.C.Batchelder, A.V.Daniel, G.M.Ter-Akopian, Yu.Ts.Oganessian, A.Gelberg

Signature inversion in odd-odd ¹¹⁴Rh: First identification of high-spin states in very neutron-rich ¹¹⁴Rh and application of the triaxial projected shell model

RADIOACTIVITY ²⁵²Cf(SF); measured Eγ, Iγ, γγ-coin, fission yields ratios using the Gammasphere array. ¹¹⁴Rh; deduced levels, J, π, rotational bands, signature inversion, configurations. Comparison with Triaxial Projected Shell Model calculations. Systematics of negative-parity yrast bands of odd-odd Rh nuclei with A=104-114.

doi: 10.1103/PhysRevC.83.064310
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2011LI29      Phys.Rev. C 84, 014304 (2011)

S.H.Liu, J.H.Hamilton, A.V.Ramayya, A.Gelberg, L.Gu, E.Y.Yeoh, S.J.Zhu, N.T.Brewer, J.K.Hwang, Y.X.Luo, J.O.Rasmussen, W.C.Ma, A.V.Daniel, Yu.Ts.Oganessian, G.M.Ter-Akopian

High-spin level structure of ¹¹⁵Rh: Evolution of triaxiality in odd-even Rh isotopes

RADIOACTIVITY ²⁵²Cf(SF); measured Eγ, Iγ, γγ-coin using Gammasphere array. ¹¹⁵Rh; deduced levels, J, π, bands, moment of inertia, signature splitting, fission yield ratios. Comparison with Rotor plus particle model calculations. Systematics of level energies, signature splittings and moments of inertia plots of ^{107,109,111,113,115}Rh nuclei.

doi: 10.1103/PhysRevC.84.014304
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2011LI41      Phys.Rev. C 84, 044303 (2011)

S.H.Liu, J.H.Hamilton, A.V.Ramayya, Y.Shi, F.R.Xu, S.J.Zhu, E.Y.Yeoh, J.C.Batchelder, N.T.Brewer, J.K.Hwang, Y.X.Luo, J.O.Rasmussen, W.C.Ma, A.V.Daniel, G.M.Ter-Akopian, Yu.Ts.Oganessian

First identification of high-spin states in the odd-odd neutron-rich nucleus ¹⁵²Pr

RADIOACTIVITY ²⁵²Cf(SF); measured Eγ, Iγ, γγ-coin, γγ(θ) using GAMMASPHERE array. ¹⁵²Pr; deduced levels, J, π, bands, conversion coefficients, multipolarity, configurations. ^96,97,98,99Y, ¹⁴⁹Ce, ^151,153Pr; measured Eγ. Systematics of quasi-neutron states in ¹⁵¹Ce, ¹⁵³Nd, ¹⁵⁵Sm, ¹⁵⁷Gd, ¹⁵⁹Dy, ¹⁶¹Er. Comparison with total Routhian surface (TRS) calculations.

doi: 10.1103/PhysRevC.84.044303
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2011YE03      Phys.Rev. C 83, 054317 (2011)

E.Y.Yeoh, S.J.Zhu, J.H.Hamilton, K.Li, A.V.Ramayya, Y.X.Liu, J.K.Hwang, S.H.Liu, J.G.Wang, Y.Sun, J.A.Sheikh, G.H.Bhat, Y.X.Luo, J.O.Rasmussen, I.Y.Lee, H.B.Ding, L.Gu, Q.Xu, Z.G.Xiao, W.C.Ma

High-spin structure and multiphonon γ vibrations in very neutron-rich ¹¹⁴Ru

RADIOACTIVITY ²⁵²Cf(SF); measured Eγ, Iγ, γγ-coin using Gammasphere array. ¹¹⁴Ru; deduced levels, J, π, bands, alignments. Systematics of level energies for ^{108,110,112,114}Ru nuclei. Calculated Routhians using cranked-shell model with triaxial deformation parameters. Triaxial projected shell-model calculations for γ-vibrational band.

doi: 10.1103/PhysRevC.83.054317
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2010GU07      Chin.Phys.Lett. 27, 062501 (2010)

L.Gu, S.-J.Zhu, J.H.Hamilton, A.V.Ramayya, J.K.Hwang, S.H.Liu, J.-G.Wang, Y.X.Luo, J.O.Rasmussen, I.Y.Lee, Q.Xu, E.Y.Yeoh, W.C.Ma

Collective Band Structures and Identification of One-Phonon and Two-Phonon γ-Vibrational Bands in ¹⁰⁹Tc

RADIOACTIVITY ²⁵²Cf(SF); measured Eγ, Iγ, γγγ-coin.; ¹⁰⁹Tc; deduced level scheme, high spin states, yrast bands interpretation. Cranked shell model calculations.

doi: 10.1088/0256-307X/27/6/062501
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2010WA26      Nucl.Phys. A834, 94c (2010)

J.-G.Wang, S.-J.Zhu, J.H.Hamilton, H.-B.Ding, L.Gu, A.V.Ramayya, J.K.Hwang, S.H.Liu, K.Li, Y.X.Luo, J.O.Rasmussen, I.Y.Lee, Q.Xu, E.-Y.Yeoh, Z.G.Xiao, W.C.Ma

Identification of Two-Phonon γ-Vibrational Bands in Odd-A Nuclei at A ∼ 100 Region

RADIOACTIVITY ²⁵²Cf(SF); measured Eγ, Iγ, γγ-coin. ¹⁰³Nb, ¹⁰⁵Mo, ¹⁰⁷Tc; deduced levels, J, π, high-spin states, 2γ-vibrational bands.

doi: 10.1016/j.nuclphysa.2010.01.028
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2010WA37      J.Phys.(London) G37, 125107 (2010)

J.G.Wang, S.J.Zhu, L.Gu, Z.G.Xiao, E.Y.Yeoh, M.Zhang, Y.Liu, H.B.Ding, Q.Xu, L.H.Zhu, X.G.Wu, Y.S.Chen, C.Y.He, G.S.Li, L.L.Wang, Y.Zhang, B.Zhang

High-spin states and collective band structures in the odd-odd ¹⁴⁰Pm nucleus

NUCLEAR REACTIONS ¹²⁶Te(¹⁹F, 5n), E=90 MeV; measured Eγ, Iγ, γ-γ-coin.; ¹⁴⁰Pm deduced energies, level scheme, yrast bands, J, π, multipolarities. Comparison with TRS calculations.

doi: 10.1088/0954-3899/37/12/125107
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2010YE08      Phys.Rev. C 82, 027302 (2010)

E.Y.Yeoh, S.J.Zhu, J.H.Hamilton, A.V.Ramayya, Y.X.Liu, Y.Sun, J.K.Hwang, S.H.Liu, J.G.Wang, Y.X.Luo, J.O.Rasmussen, I.Y.Lee, H.B.Ding, L.Gu, Q.Xu, Z.G.Xiao

Identification of a quasiparticle band in very neutron-rich ¹⁰⁴Zr

RADIOACTIVITY ²⁵²Cf(SF); measured Eγ, Iγ, γγ-coin using Gammasphere array. ¹⁰⁴Zr; deduced levels, J, π, bands, yrast structure, configurations. Comparison with projected shell model (PSM) calculations.

doi: 10.1103/PhysRevC.82.027302
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2010YE10      Eur.Phys.J. A 45, 147 (2010)

E.Y.Yeoh, S.J.Zhu, J.H.Hamilton, A.V.Ramayya, Y.C.Yang, Y.Sun, J.K.Hwang, S.H.Liu, J.G.Wang, Y.X.Luo, J.O.Rasmussen, I.Y.Lee, H.B.Ding, K.Li, L.Gu, Q.Xu, Z.G.Xiao, W.C.Ma

High-spin states and a new band based on the isomeric state in ¹⁵²Nd

RADIOACTIVITY ²⁵²Cf(SF); measured prompt, β-delayed Eγ, Iγ, γγ-coin. ¹⁵²Nd deduced levels, J, π, high-spin states, isomeric transition T_1/2, band on isomeric state; calculated levels, J, π using projected shell model.

doi: 10.1140/epja/i2010-11001-6
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2009WA10      Phys.Lett. B 675, 420 (2009)

J.-G.Wang, S.-J.Zhu, J.H.Hamilton, A.V.Ramayya, J.K.Hwang, S.H.Liu, K.Li, Y.X.Luo, J.O.Rasmussen, I.Y.Lee, H.-B.Ding, Q.Xu, L.Gu, E.-Y.Yeoh, Z.-G.Xiao, W.C.Ma

Identification of one-phonon and two-phonon γ-vibrational bands in odd-Z ¹⁰³Nb nucleus

RADIOACTIVITY ²⁵²Cf(SF); measured Eγ, Iγ, γγ-coin using Gammasphere array. ¹⁰³Nb; deduced high-spin levels, J, π, vibrational band structure.

doi: 10.1016/j.physletb.2009.04.057
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2008XU08      Phys.Rev. C 78, 064301 (2008)

Q.Xu, S.J.Zhu, J.H.Hamilton, A.V.Ramayya, J.K.Hwang, B.Qi, J.Meng, J.Peng, Y.X.Luo, J.O.Rasmussen, I.Y.Lee, S.H.Liu, K.Li, J.G.Wang, H.B.Ding, L.Gu, E.Y.Yeoh, W.C.Ma

Identification of pseudospin partner bands in ¹⁰⁸Tc

RADIOACTIVITY ²⁵²Cf(SF); measured Eγ, Iγ, γγ-coin. ¹⁰⁸Tc; deduced levels, J, π, bands, B(E1)/B(E2) ratios. ^106,107Mo, ¹⁰⁷Tc; deduced bands. Comparison with particle-rotor model calculations.

doi: 10.1103/PhysRevC.78.064301
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