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NSR database version of April 27, 2024.

Search: Author = K.Cheng

Found 16 matches.

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2023MA48      Phys.Rev. C 108, 044606 (2023)

C.-W.Ma, X.-X.Chen, X.-B.Wei, D.Peng, H.-L.Wei, Y.-T.Wang, J.Pu, K.-X.Cheng, Y.-F.Guo, C.-Y.Qiao

Systematic behavior of fragments in Bayesian neural network models for projectile fragmentation reactions

doi: 10.1103/PhysRevC.108.044606
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2022CH16      Chin.Phys.C 46, 024105 (2022)

K.-X.Cheng, C.Xu, C.n-W.Ma, J.Pu, Y.-T.Wang

Pauli blocking potential applied to heavy-ion fusion reactions

NUCLEAR REACTIONS ²⁰⁸Pb(¹⁶O, X), ⁵⁸Ni(⁵⁸Ni, X), E not given; calculated fusion hindrance phenomena at deep sub-barrier energies using the Pauli blocking potential between two colliding nuclei in the density overlapping region is applied to describe the heavy nuclei fusion process.

doi: 10.1088/1674-1137/ac3749
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2022MA39      Chin.Phys.C 46, 074104 (2022)

C.-W.Ma, X.-B.Wei, X.-X.Chen, D.Peng, Y.-T.Wang, J.Pu, K.-X.Cheng, Y.-F.Guo, H.-L.Wei

Precise machine learning models for fragment production in projectile fragmentation reactions using Bayesian neural networks

doi: 10.1088/1674-1137/ac5efb
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2022PE09      J.Phys.(London) G49, 085102 (2022)

D.Peng, H.-L.Wei, X.-X.Chen, X.-B.Wei, Y.-T.Wang, J.Pu, K.-X.Cheng, C.-W.Ma

Bayesian evaluation of residual production cross sections in proton-induced nuclear spallation reactions

NUCLEAR REACTIONS ¹H(³⁶Ar, X), (⁴⁰Ar, X), (⁴⁰Ca, X), (⁵⁶Fe, X), (⁹³Nb, X), (⁹³Zr, X), (¹⁰⁷Pd, X), (⁹⁰Sr, X), (¹³⁶Xe, X), (¹³⁷Cs, X), (¹³⁸Ba, X), (¹⁹⁷Au, X), E<2.6 GeV/nucleon; analyzed available data; deduced accurate and complete energy-dependent residual σ using a simplified EPAX formula (sEPAX), the Bayesian neural network (BNN) technique.

doi: 10.1088/1361-6471/ac7069
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2021CH03      Phys.Rev. C 103, 014613 (2021)

K.Cheng, C.Xu, C.Ma, J.Pu, Y.Wang

Density variation effects in α + ²⁰⁸Pb and ¹⁶O + ²⁰⁸Pb fusion reactions

NUCLEAR REACTIONS ²⁰⁸Pb(α, X), E=15.6, 23.5 MeV; calculated width parameter and corresponding central density of α particles versus distance between the center of mass of two nuclei, potentials of M3Y + Pauli and M3Y + Pauli + DVE. ²⁰⁸Pb(¹⁶O, X), E=75.65, 109.52 and 65.85 MeV; calculated density distributions of ²⁰⁸Pb, ¹⁶O, and α cluster at E(¹⁶O)=75.65 MeV, total potentials M3Y + Pauli with and without DVE for E(¹⁶O)=109.52 and 65.85 MeV; deduced influence of density variation of α particles and α-cluster nucleus ¹⁶O on cross sections and potentials. ²⁰⁸Pb(¹⁶O, X), E=64-88 MeV; calculated fusion σ(E) using coupled-channels (CC) with M3Y + Pauli and M3Y + Pauli + DVE potentials. Comparison with experimental data.

doi: 10.1103/PhysRevC.103.014613
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2020CH22      Phys.Rev. C 102, 014619 (2020)

K.Cheng, C.Xu

Pauli blocking effects in nα-nucleus-induced fusion reactions

NUCLEAR REACTIONS ²⁰⁸Pb(¹⁶O, X), E(cm)=65-90 MeV; ³⁰Si(²⁴Mg, X), E(cm)=20-30 MeV; ¹⁹⁸Pt(¹²C, X), E(cm)=45-70 MeV; ³⁰Si(¹²C, X), E(cm)=8-20 MeV; ³⁰Si(²⁸Si, X), E(cm)=24-40 MeV; calculated total potential energies as function of distance, fusion σ(E) using coupled channels model with standard M3Y potential, and with M3Y+Pauli blocking potential for the nα nuclei involving α-cluster structures.

doi: 10.1103/PhysRevC.102.014619
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2019CH02      Phys.Rev. C 99, 014607 (2019)

K.Cheng, C.Xu

Pauli blocking effects in α-induced fusion reactions

NUCLEAR REACTIONS ¹⁹⁷Au, ²⁰⁸Pb, ²⁰⁹Bi, ²³⁸U(α, X), E=15-25 MeV; calculated fusion σ(E) and density distributions for skin-type, and halo-type neutron distributions using microscopic Pauli blocking potential with nuclear potential from standard Michigan-3-Yukawa-Reid effective nucleon-nucleon interaction, and M3Y+Pauli blocking potential, and CCFULL code for fusion cross sections. Comparison with experimental data for fusion cross sections.

doi: 10.1103/PhysRevC.99.014607
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2019CH47      Nucl.Phys. A992, 121642 (2019)

K.Cheng, C.Xu

Systematic investigation of "hindrance" in heavy-ion fusion reactions at deep sub-barrier energies

NUCLEAR REACTIONS ¹⁹⁸Pt(¹²C, x), ¹⁹⁷Au(¹¹B, x), ⁹⁰Zr(⁴⁰Ca, x), ³⁰Si(¹²C, x), E=8-84 MeV; calculated barrier heights, fusion σ with different interaction potentials; compared with experimental data; deduced coupling strengths in the CC calculations; calculated astrophysical S factor; deduced close dependence on the behaviour of potentials inside the Coulomb barrier, but the corresponding improvement due to damping factor is found to be small because of weak coupling effect.

doi: 10.1016/j.nuclphysa.2019.121642
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2001SA05      Phys.Rev. A63, 032506 (2001)

J.Sapirstein, K.T.Cheng

Hyperfine Splitting in Lithiumlike Bismuth

NUCLEAR MOMENTS ²⁰⁹Bi; calculated hfs, μ.

doi: 10.1103/PhysRevA.63.032506
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1997CH11      Phys.Rev. C55, 2092 (1997)

K.S.Cheng, C.C.Yao, Z.G.Dai

Properties of Nuclei in the Inner Crusts of Neutron Stars in the Relativistic Mean-Field Theory

doi: 10.1103/PhysRevC.55.2092
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1997DA08      Phys.Lett. 401B, 219 (1997)

Z.G.Dai, K.S.Cheng

Does Kaon Condensation Occur in Neutron Stars in the Relativistic Mean-Field Theory ( Question )

doi: 10.1016/S0370-2693(97)00416-4
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1997JO10      Phys.Rev. A55, 2728 (1997)

W.R.Johnson, K.T.Cheng, D.R.Plante

Hyperfine Structure of 2³P Levels of Heliumlike Ions

NUCLEAR MOMENTS ³He, ^6,7Li, ¹⁹F; calculated hfs. Z=6-94 calculated heliumlike ions 2³P₀ levels hyperfine quenching.

doi: 10.1103/PhysRevA.55.2728
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1988YO01      Phys.Rev. A37, 4213 (1988)

L.Young, W.J.Childs, T.Dinneen, C.Kurtz, H.G.Berry, L.Engstrom, K.T.Cheng

Hyperfine Structure of Sc II: Experiment and Theory

NUCLEAR MOMENTS ⁴⁵Sc; measured hfs; deduced hyperfine constants. Collinear laser spectroscopy. Multi-configurational Dirac-Fock calculations.

doi: 10.1103/PhysRevA.37.4213
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1986CH07      Phys.Rev. A33, 1469 (1986)

W.J.Childs, L.S.Goodman, K.T.Cheng

Hyperfine Structure of Excited 4f¹¹5d 6s² Levels in ¹⁶⁷Er I: Measurements and multiconfiguration Dirac-Fock calculations

NUCLEAR MOMENTS ¹⁶⁷Er; measured hfs; deduced hfs constants. ^{162,164,166,167,168,170}Er; measured optical hfs. Laser-rf double resonance technique. Multi-configuration Dirac-Fock calculations.

doi: 10.1103/PhysRevA.33.1469
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1986NI10      Phys.Scr. 34, 776 (1986)

U.Nielsen, K.T.Cheng, H.Ludvigsen, J.N.Xiao

Hyperfine Structure of 4f¹²6s and 4f¹²5d Configurations in ¹⁶⁷Er II Measured by Collinear Fast-Beam Laser and Radio-Frequency Laser Double-Resonance Spectroscopy

NUCLEAR MOMENTS ¹⁶⁷Er; measured hfs; deduced magnetic dipole, electric quadrupole hyperfine constants. R.f. laser double resonance spectroscopy.

doi: 10.1088/0031-8949/34/6B/011
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1985CH13      Phys.Rev. A31, 2775 (1985)

K.T.Cheng, W.J.Childs

Ab Initio Calculation of 4f(N)6S² Hyperfine Structure in Neutral Rare-Earth Atoms

ATOMIC PHYSICS ¹⁵¹Eu, ¹⁵⁹Tb, ¹⁶¹Dy, ¹⁶⁵Ho, ¹⁶⁷Er, ¹⁶⁹Tm; calculated level energies, Lande' g factors, hfs constants. Multi-configurational Dirac-Fock method.

doi: 10.1103/PhysRevA.31.2775
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Note: The following list of authors and aliases matches the search parameter K.Cheng: , K.S.CHENG, K.T.CHENG, K.X.CHENG