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NSR database version of April 27, 2024.

Search: Author = M.D.Usang

Found 6 matches.

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2020IS01      Phys.Rev. C 101, 011601 (2020)

C.Ishizuka, X.Zhang, M.D.Usang, F.A.Ivanyuk, S.Chiba

Effect of the doubly magic shell closures in ¹³²Sn and ²⁰⁸Pb on the mass distributions of fission fragments of superheavy nuclei

NUCLEAR STRUCTURE ²⁷⁴Hs, ²⁸⁰Ds, ²⁸⁶Cn, ²⁹²Fl, ²⁹⁶Lv, ²⁹⁴Og, ³⁰²120, ³⁰⁶122; calculated fission fragment mass distributions for the excitation energy 10 and 30 MeV as a function of fragment mass number; deduced effect of doubly magic nuclei 132Sn and 208Pb on the mass distributions of fission fragments of superheavy nuclei ²³⁶U, ²⁴⁰Pu, ²⁴⁴Cm, ²⁵²Cf, ^{256,257,258,259,264}Fm, ²⁶⁰Md, ²⁵⁹Lr, ²⁷⁴Hs, ²⁸⁶Cn, ²⁹²Fl, ²⁹⁶Lv, ²⁹⁴Og, ³⁰²120, ³⁰⁶122; calculated distribution of quadrupole deformation Q₂₀ as function of fission fragment mass number. Calculations used dynamical four-dimensional Langevin approach.

doi: 10.1103/PhysRevC.101.011601
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2018HA31      Phys.Rev.Lett. 121, 102701 (2018)

T.Hayakawa, H.Ko, M.-K.Cheoun, M.Kusakabe, T.Kajino, M.D.Usang, S.Chiba, K.Nakamura, A.Tolstov, K.Nomoto, M.-a.Hashimoto, M.Ono, T.Kawano, G.J.Mathews

Short-Lived Radioisotope ⁹⁸Tc Synthesized by the Supernova Neutrino Process

NUCLEAR REACTIONS ⁹⁸Mo(ν, E)⁹⁸Tc, ⁹⁹Tc(ν, ν'n)⁹⁸Tc, ⁹⁹Ru(ν, ν'p)⁹⁸Tc, E=1-9 MeV; calculated yields, abundances as a function of interior mass from the Supernova; deduced dominance the charged current reaction on ⁹⁸Mo reaction.

doi: 10.1103/PhysRevLett.121.102701
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2018IV04      Phys.Rev. C 97, 054331 (2018)

F.A.Ivanyuk, C.Ishizuka, M.D.Usang, S.Chiba

Temperature dependence of shell corrections

NUCLEAR STRUCTURE ²³⁶U; calculated temperature dependence of shell corrections and averaged in deformation to the energy, entropy and free energy for protons and neutrons of ²³⁶U g.s. with and without pairing effects using mean-field approximation; deduced more accurate approximation for the shell corrections to energy and free energy. A=50-250; calculated pairing critical temperature for protons and neutrons along the β-stability line.

NUCLEAR REACTIONS ²³²Th, ²³⁸U(n, F), E=32.8, 45.3, 59.9 MeV; calculated fission fragment mass distributions using new shell corrections to the liquid drop energy and deformed Woods-Saxon potential. Comparison with experimental values and predictions from previous shell corrections.

doi: 10.1103/PhysRevC.97.054331
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2017IS16      Phys.Rev. C 96, 064616 (2017)

C.Ishizuka, M.D.Usang, F.A.Ivanyuk, J.A.Maruhn, K.Nishio, S.Chiba

Four-dimensional Langevin approach to low-energy nuclear fission of ²³⁶U

NUCLEAR REACTIONS ²³⁵U(n, F), E=14 MeV; ²⁵⁷Fm(n, F), E=thermal; calculated mass distribution of fission fragments, fission events on the mass-TKE plane, TKE distributions. ²³⁵U(n, F), E=0.5, 3.5, 5.5, 8.5, 13.5 MeV; calculated TKE of fission fragments, contour map of prescission kinetic energy as a function of mass number of fission fragments, distribution of deformation parameter in its dependence on the mass number. Four-dimensional (4D) Langevin model with infinite-depth two-center shell-model (TCSM) potential and the finite-depth two-center Woods-Saxon (TCWS) potential. Comparison with experimental data in JENDL/FPY-2011 data library.

doi: 10.1103/PhysRevC.96.064616
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2017US02      Phys.Rev. C 96, 064617 (2017)

M.D.Usang, F.A.Ivanyuk, C.Ishizuka, S.Chiba

Analysis of the total kinetic energy of fission fragments with the Langevin equation

NUCLEAR REACTIONS ²³⁵U(n, F), E=14 MeV; ²⁵⁷Fm(n, F), E=thermal; ²³¹Pa, ²³⁸U, ²³⁹Pu(n, F), E<45 MeV; calculated mass distribution and the total kinetic energy (TKE) of fission fragments at various excitation energies within the three-dimensional Langevin approach with microscopic transport coefficients; deduced systematic trends of TKE with Z²/A^1/3 of the fissioning system. Comparison with evaluated post-neutron distributions data stored in JENDL library.

doi: 10.1103/PhysRevC.96.064617
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2016US04      Phys.Rev. C 94, 044602 (2016)

M.D.Usang, F.A.Ivanyuk, C.Ishizuka, S.Chiba

Effects of microscopic transport coefficients on fission observables calculated by the Langevin equation

NUCLEAR STRUCTURE ^234,236U, ²⁴⁰Pu; calculated fission fragment mass distribution, total kinetic energy, microscopic transport coefficients for fission of compound nuclei at an excitation energy of 20 MeV. Three-dimensional Langevin model. Comparison with experimental data.

doi: 10.1103/PhysRevC.94.044602
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Note: The following list of authors and aliases matches the search parameter M.D.Usang: , M.D.USANG