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NSR database version of April 27, 2024.

Search: Author = X.Guan

Found 23 matches.

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2023GU05      Phys.Rev. C 107, 034307 (2023)

X.Guan, T.-C.Wang, W.-Q.Jiang, Y.Su, Y.-J.Chen, K.Pomorski

Impact of the pairing interaction on fission of U isotopes

NUCLEAR REACTIONS ^{232,233,234,235,236,238}U(n, F), E=thermal; calculated fragment mass distribution, total kinetic energy distribution. Deformed mean-field plus standard pairing model. Comparison to experimental data and ENDF/B-VIII.0.

NUCLEAR STRUCTURE ²³⁶U; calculated potential-energy surface, static fission path, prescission point, scission process point, asymmetric and symmetric scission points, neutron and proton pairing interaction energy. ^{231,232,233,234,235,236,238,239,240}U; calculated fission barrier height. Comparison to experimental data.

doi: 10.1103/PhysRevC.107.034307
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2023WU11      Nucl.Instrum.Methods Phys.Res. A1057, 168779 (2023)

H.Wu, X.Guan, G.Wu, H.Wang, Y.Wang, J.Du, L.Zhang, L.Gu

Experimental validation of a BNCT epithermal neutron flux detector using ⁵⁵Mn(n, γ)⁵⁶Mn reaction at an accelerator-based BNCT facility

NUCLEAR REACTIONS ⁵⁵Mn(n, γ), E epithermal; measured reaction products, Eγ, Iγ; deduced induced radioactivity in the activated MnNi foil, epithermal neutron flux. GMX60 detector, the AB-BNCT facility developed by Lanzhou University by irradiating the detector in the neutron field.

doi: 10.1016/j.nima.2023.168779
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2021GU26      Phys.Rev. C 104, 044329 (2021)

X.Guan, Y.Xin, Y.-J.Chen, X.-Z.Wu, Z.-X.Li

Impact of pairing interactions on fission in the deformed mean-field plus standard pairing model

NUCLEAR STRUCTURE ^{220,221,222,223,224,225,226,227,228,229,230,231,232,233,234,235}Th, ^{222,223,224,225,226,227,228,229,230,231,232,233,234,235,236,237}U, ^{224,225,226,227,228,229,230,231,232,233,234,235,236,237,238,239}Pu; calculated odd-even mass differences using extended pairing model, and compared with experimental values. ²²⁶Th; calculated potential-energy surface contour in (ϵ, α₃) plane, neutron and proton pairing correction energies as function of ϵ deformation, inner and outer barrier heights, information entropy. ^{228,229,230,231,232}Th, ^{232,233,234,236}U, ^236,237,238Pu; calculated root-mean-square deviations of the theoretical inner and outer heights using BCS pairing, and compared with experimental values. Deformed mean-field plus extended pairing model.

doi: 10.1103/PhysRevC.104.044329
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2021MA15      Phys.Rev. C 103, 024302 (2021)

K.Y.Ma, H.Wang, H.N.Pan, J.B.Lu, Y.J.Ma, D.Yang, Q.Y.Yang, X.Guan, J.Q.Wang, S.Y.Liu, H.C.Zhang, X.G.Wu, Y.Zheng, C.B.Li

High-spin states and possible chirality in odd-odd ¹¹⁰Ag

NUCLEAR REACTIONS ¹¹⁰Pd(⁷Li, 3nα)¹¹⁰Ag, E=46 MeV; measured Eγ, Iγ, γγ-coin, γγ(θ)(DCO) using Compton-suppressed HPGe detectors, two planar-type HPGe detectors, and one clover HPGe detector at the HI-13 tandem accelerator of CIAE-Beijing. ¹¹⁰Ag; deduced high-spin levels, J, π, bands, multipolarities, alignments, configurations, moment of inertia plots, staggering parameters, B(M1)/B(E2), chiral doublet bands. Comparison with Cranked shell model calculations.

doi: 10.1103/PhysRevC.103.024302
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2020MA41      Eur.Phys.J. A 56, 209 (2020)

K.Y.Ma, J.B.Lu, J.Li, Y.J.Ma, D.Yang, W.J.Sun, Q.Y.Yang, X.Guan, J.Q.Wang, H.N.Pan, H.Wang, T.F.Cui, D.M.Zhang, L.H.Zhu, X.G.Wu, Y.Zheng, C.B.Li

Candidate magnetic rotational band in ¹⁰⁹Ag

NUCLEAR REACTIONS ¹¹⁰Pd(⁷Li, 4nα)¹⁰⁹Ag, E=46 MeV; measured reaction products, Eγ, Iγ, γ-γ-coin.; deduced γ-ray energies and intensities, J, π, level scheme, bands, momenta, B(M1)/B(E2) ratios.

doi: 10.1140/epja/s10050-020-00213-w
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2020PA42      Eur.Phys.J. Special Topics 229, 2497 (2020)

F.Pan, X.Guan, L.-R.Dai, Y.Zhang, J.P.Draayer

Exact solutions of mean-field plus various pairing interactions and shape phase transitions in nuclei

NUCLEAR STRUCTURE ^{58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77}Ni, ^{157,158,159,160,161,162,163,164,165,166,167,168,169,170,171}Er, ^{159,160,161,162,163,164,165,166,167,168,169,170,171,172,173,174}Yb, ^{223,224,225,226,227,228,229,230,231,232,233,234,235}Th, ^{226,227,228,229,230,231,232,233,234,235,236,237,238,239}U; calculated pairing gap, binding energies. Comparison with available data.

doi: 10.1140/epjst/e2020-000014-5
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2020YU04      Eur.Phys.J. A 56, 164 (2020)

Y.Yue, Y.Chen, X.Guan

Quantum phase transitions and spectral statistical properties in nuclei near N ∼ 90

doi: 10.1140/epja/s10050-020-00150-8
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2019GU10      Nucl.Phys. A986, 86 (2019)

X.Guan, H.Zhao, F.Pan, J.P.Draayer

Ground-state shape evolution in Er and Yb isotopes

NUCLEAR STRUCTURE ^{154,155,156,157,158,159,160,161,162,163}Er, ^{156,157,158,159,160,161,162,163,164,165}Yb; calculated, extracted deformation parameters using published experimental data, neutron/proton pairing interaction strength from binding energies and odd-even mass differences, energy ratio; deduced that the gs shape (phase) evolution is mainly due to pairing interaction and less by quadrupole deformation. Axially deformed Nilsson mean-field plus extended pairing model.

doi: 10.1016/j.nuclphysa.2019.03.012
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2019MA48      Phys.Rev. C 100, 014326 (2019)

K.Y.Ma, J.B.Lu, J.Li, D.Yang, Y.J.Ma, W.J.Sun, X.Guan, D.M.Zhang, L.H.Zhu, X.G.Wu, Y.Zheng, C.B.Li, Y.Z.Liu

Possible antimagnetic rotational band and neutron alignment in ¹¹³In

NUCLEAR REACTIONS ¹¹⁰Pd(⁷Li, 4n), E=38, 50 MeV; measured Eγ, Iγ, γγ-coin, γγ(θ)(DCO) using HPGe detector array at CIAE-Beijing. ¹¹³In; deduced levels, J, π, multipolarities, configurations, alignments, magnetic dipole rotational (shears) bands, antimagnetic rotational bands. Comparison with self-consistent tilted axis cranking relativistic mean-field calculations, with the structure of ¹¹¹In, and with previous experimental results; predicted B(E2), deformation parameters β₂ and γ, and J²/B(E2).

doi: 10.1103/PhysRevC.100.014326
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2018LI14      Phys.Rev. C 97, 034331 (2018)

C.B.Li, X.G.Wu, Y.Zheng, Y.J.Jin, H.L.Ma, G.S.Li, J.Zhong, B.J.Zhu, T.X.Li, Y.X.Gao, X.Guan, J.Q.Liu

Level structure in the transitional nucleus ¹⁹⁹Tl

NUCLEAR REACTIONS ¹⁹⁶Pt(⁷Li, 4n), E=40 MeV; measured Eγ, Iγ, γγ-coin, γγ(θ)(DCO) using eight Compton-suppressed HPGe detectors and two planar HPGe detectors at HI-13 tandem accelerator of China Institute of Atomic Energy (CIAE). ¹⁹⁹Tl; deduced high-spin levels, J, π, bands, multipolarities, configurations, alignments, oblate shapes, potential energy surfaces for 17/2- state. Comparison with cranked Nilsson-Strutinsky-Bogoliubov (CNSB) model calculations. Systematics of 13/2+ states in N=104-122 Tl and Bi nuclei. Systematics of negative-parity yrast states and positive-parity 3-qp yrast states in ^195,197,199Tl.

doi: 10.1103/PhysRevC.97.034331
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2017GU09      Chin.Phys.C 41, 054002 (2017)

X-C.Guan, Y.-K.Lu, H.-J.He, J.-T.Zhao, Q.Wang, K.-H.Fang, X.Meng, T.-S.Wang, J.Kasagi

Deuterium depth distribution study in Yb

NUCLEAR REACTIONS ²H(d, p), E=20 keV; measured reaction products, Ep, Ip; deduced proton yields, deuterium depth distribution for 20 keV deuterons implanted into Yb foil.

doi: 10.1088/1674-1137/41/5/054002
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2016GU12      Phys.Rev. C 94, 024309 (2016)

X.Guan, H.Xu, Y.Zhang, F.Pan, J.P.Draayer

Ground state phase transition in the Nilsson mean-field plus standard pairing model

NUCLEAR STRUCTURE ^{144,145,146,147,148,149,150,151,152,153,154,155}Nd, ^{146,147,148,149,150,151,152,153,154,155,156,157}Sm, ^{148,149,150,151,152,153,154,155,156,157,158,159}Gd; calculated Pairing interaction strength G, odd-even mass differences, odd-even differences of S(2n) values, odd-even differences of α-, and β^--decay energies. Nilsson mean-field plus standard pairing model for the ground state phase transitions. Comparison with experimental values taken from NNDC databases.

doi: 10.1103/PhysRevC.94.024309
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2015GU19      Phys.Rev. C 92, 044303 (2015)

X.Guan, K.D.Launey, Y.Wang, F.Pan, J.P.Draayer

Ground-state properties of rare-earth nuclei in the Nilsson mean-field plus extended-pairing model

NUCLEAR STRUCTURE ^{152,153,154,155,156,157,158,159,160,161,162,163,164}Er, ^{154,155,156,157,158,159,160,161,162,163,164,165,166}Yb, ^{156,157,158,159,160,161,162,163,164,165,166,167,168}Hf; calculated pairing interaction strengths, binding energies, even-odd mass differences, energies of the first pairing excitation states in A=156-164 Er, A=160-165 Yb and A=166-168 Hf nuclei, and moments of inertia for the ground-state bands. Dominance of s, d, and g valence nucleon pairs in the ground state. Nilsson mean-field using proton-proton and neutron-neutron pairing interactions. Comparison with experimental data.

doi: 10.1103/PhysRevC.92.044303
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2015ZH37      Chin.Phys.C 39, 104103 (2015)

Y.Zhang, X.Guan, Y.Wang, Y.Zuo, L.N.Bao, F.Pan

Shape phase transition in the odd Sm nuclei: effective order parameter and odd-even effect

NUCLEAR STRUCTURE ^{145,146,147,148,149,150,151,152,153,154,155,156,157,158}Sm; calculated two-neutron separation energies, odd-even mass difference, evolution of the pairing strength, first pairing-excitation energy. BCS theory, CBCS scheme.

doi: 10.1088/1674-1137/39/10/104103
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2013GU31      Phys.Rev. C 88, 044325 (2013)

X.Guan, K.D.Launey, J.Gu, F.Pan, J.P.Draayer

Level statistical properties of the spherical mean-field plus standard pairing model

NUCLEAR STRUCTURE ^{48,49,50,51,52,53}Ca; calculated level spacing distribution, spectral rigidity, statistical energy spectra. ^{42,43,44,45,46,47,48,49,50,51,52}Ca; calculated pairing gap and compared with experimental data. Spherical mean-field plus standard pairing model calculations, with pairing strength deduced from experimental data. Comparison with Gaussian orthogonal ensemble (GOE) predictions, and Poisson distribution.

doi: 10.1103/PhysRevC.88.044325
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2013ZH52      Phys.Rev. C 88, 064305 (2013)

Y.Zhang, L.Bao, X.Guan, F.Pan, J.P.Draayer

Ground-state phase transition in odd-A and odd-odd nuclei near N=90

NUCLEAR STRUCTURE Z=54-75, N=80-100; analyzed systematics of S(2n), odd-even mass differences, Q(α), Q(2β), neutron pairing strength, ground-state phase transitions. Comparison with experimental data.

doi: 10.1103/PhysRevC.88.064305
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2012GU16      Phys.Rev. C 86, 024313 (2012)

X.Guan, K.D.Launey, M.-x.Xie, L.Bao, F.Pan, J.P.Draayer

Heine-Stieltjes correspondence and the polynomial approach to the standard pairing problem

NUCLEAR STRUCTURE ^{42,43,44,45,46,47,48,49}Ca, ^{58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77}Ni, ^{146,147,148,149,150,151,152,153}Sm; calculated pairing gaps. ¹¹⁰Sn; calculated relevant polynomials and the corresponding eigen-energies. Solution of the Bethe ansatz (Gaudin-Richardson) equations based on Heine-Stieltjes polynomials. Comparison with BCS (pairing) calculations and experimental data.

doi: 10.1103/PhysRevC.86.024313
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2012WA01      J.Phys.(London) G39, 015201 (2012)

T.S.Wang, X.C.Guan, K.H.Fang, J.T.Zhao, Q.H.He, M.C.Lan, X.X.Xu

Reanalysis of the astrophysical S(E) factors of the ⁶Li(d, α)⁴He, ⁷Li(p, α)⁴He and ⁶Li(p, α)³He reactions

NUCLEAR REACTIONS ⁶Li(d, α), ^6,7Li(p, α), E<1 MeV; analyzed the data; deduced S-factors. Comparison with previous analysis.

doi: 10.1088/0954-3899/39/1/015201
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2011GU18      Chin.Phys.C 35, 747 (2011)

X.Guan, H.Li, Q.Tan, F.Pan, J.P.Draayer

Nilsson mean-field plus the extended pairing model description of rare earth nuclei

NUCLEAR STRUCTURE ^{166,167,168,169,170,171,172,173}Hf, ^{154,155,156,157,158,159,160,161,162,163,164,165,166,167,168,169}Er, ^{160,161,162,163,164,165,166,167,168,169,170,171}Yb; calculated binding energies, J, π, mass differences. Nilsson mean-field plus, comparison with experimental data.

doi: 10.1088/1674-1137/35/8/009
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2011LU01      Chin.Phys.C 35, 26 (2011)

H.-Y.Lu, T.-S.Wang, Y.-C.Han, K.-H.Fang, X.Meng, Q.-H.He, X.-C.Guan, M.-C.Lan

Effect of deuteron density distribution on the deduction of screening potential from the D(d, p)T reaction in Be metals

NUCLEAR REACTIONS ²H(d, p), E(cm)=5.5-10 keV; measured Ep, Ip; deduced relative thick target yield of protons, screening energy. Comparison with theoretical calculations.

doi: 10.1088/1674-1137/35/1/006
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2009PA38      Phys.Rev. C 80, 044306 (2009)

F.Pan, M.-X.Xie, X.Guan, L.-R.Dai, J.P.Draayer

New exact solutions of the standard pairing model for well-deformed nuclei

doi: 10.1103/PhysRevC.80.044306
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2002GU26      Nucl.Phys. B642, 501 (2002)

X.W.Guan, A.Foerster, J.Links, H.Q.Zhou

Integrability and exact solution for coupled BCS systems associated with the su(4) Lie algebra

doi: 10.1016/S0550-3213(02)00776-9
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1994BA75      Chin.J.Nucl.Phys. 16, No 2, 100 (1994)

X.Bai, W.Liu, J.Qin, Z.Li, S.Zhou, J.Zhou, A.Li, Y.Wang, X.Guan, X.Wang

The Production of ¹¹C and ¹⁷F Secondary Radioactive Beams

Note: The following list of authors and aliases matches the search parameter X.Guan: , X.C.GUAN, X.W.GUAN