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NSR database version of April 11, 2024.

Search: Author = S.Chiba

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2024IV01      Phys.Rev. C 109, 034602 (2024)

F.A.Ivanyuk, C.Ishizuka, S.Chiba

Five-dimensional Langevin approach to fission of atomic nuclei

doi: 10.1103/PhysRevC.109.034602
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2024TU02      Eur.Phys.J. A 60, 25 (2024)

A.Tudora, K.Fujio, C.Ishizuka, S.Chiba

Prompt emission calculations for 239Pu(nth, f) with the DSE model code and a pre-neutron fragment distribution Y(A, TKE) based on the four-dimensional Langevin model

NUCLEAR REACTIONS 239Pu(n, F), E thermal; calculated independent fission product yields (FPY) and other distributions of pre- and post-neutron fragments, prompt neutron multiplicity distributions. Comparison with available data.

doi: 10.1140/epja/s10050-024-01232-7
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2023EB02      Int.J.Mod.Phys. E32, 2350030 (2023)

S.Ebata, S.Okumura, C.Ishizuka, S.Chiba

The difference between charge polarizations of fission fragments deduced by the static theoretical model and in the current data library

NUCLEAR REACTIONS 235U(n, F), E low; analyzed available data; deduced a theoretical method to deduce the charge polarization (CP) and most probable charge for fission fragments for the selected range of mass numbers based on a quantum many-body framework, namely, a constrained Skyrme Hartree-Fock+BCS model.

doi: 10.1142/S0218301323500301
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2023FU03      Eur.Phys.J. A 59, 178 (2023)

K.Fujio, A.Al-Adili, F.Nordstrom, J.-F.Lemaitre, S.Okumura, S.Chiba, A.Koning

TALYS calculations of prompt fission observables and independent fission product yields for the neutron-induced fission of 235U

NUCLEAR REACTIONS 235U(n, F), E<20 MeV; calculated prompt neutron and γ-ray multiplicities, PFNS, independent fission product yields. Comparison with available data.

doi: 10.1140/epja/s10050-023-01095-4
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2023IW01      J.Nucl.Sci.Technol.(Tokyo) 60, 1 (2023)

O.Iwamoto, N.Iwamoto, S.Kunieda, F.Minato, S.Nakayama, Y.Abe, K.Tsubakihara, S.Okumura, C.Ishizuka, T.Yoshida, S.Chiba, N.Otuka, J.-C.Sublet, H.Iwamoto, K.Yamamoto, Y.Nagaya, K.Tada, C.Konno, N.Matsuda, K.Yokoyama, H.Taninaka, A.Oizumi, M.Fukushima, S.Okita, G.Chiba, S.Sato, M.Ohta, S.Kwon

Japanese evaluated nuclear data library version 5: JENDL-5

NUCLEAR REACTIONS 233,235,238U, 237Np, 238,239,240,242Pu, 241,243Am, 243,244,245,246Cm(n, F), (n, γ), E<20 MeV; analyzed available data; deduced σ, average energies of prompt fission neutrons, prompt neutron multiplicities. Neutron sublibrary for all of stable and unstable isotopes with the half-lives longer than 1 day for Z<101 except 257Es. Comparison with JENDL-4.0, ENDF/B-VIII.0 and EXFOR libraries.

doi: 10.1080/00223131.2022.2141903
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2023KU04      Eur.Phys.J. A 59, 2 (2023)

S.Kunieda, O.Iwamoto, T.Fukahori, S.Chiba

Collaboration with Dr. Efrem Sh. Soukhovitsukii: our fortuitous experiences on optical model analysis, his contribution to nuclear data activities of Japan and a posthumous study on light-nuclei

NUCLEAR REACTIONS 160Gd(p, p'), E=65 MeV; 6,7Li, 9Be, 10B, 12C, N, O(p, X), E<200 MeV; calculated energy levels, J, π, bands using SRM, σ(θ), σ using SRM-CC; deduced optical model parameters. Comparison with experimental data. 2 computer codes, SHEMMAN and OPTMAN.

doi: 10.1140/epja/s10050-022-00907-3
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2023LE02      Nucl.Phys. A1031, 122594 (2023)

J.-Y.Lee, Y.Kim, S.Chiba

New targets for relic antineutrino capture

NUCLEAR REACTIONS 131Ba, 159Dy, 175Hf, 195Au, 243Cm(ν-bar, X), E<1 eV; analyzed available data; deduced new candidates for the relic antineutrino detection, needs for high precise experiments of Q-values and intensities of EC decay.

doi: 10.1016/j.nuclphysa.2022.122594
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2022IV05      Nucl.Phys. A1028, 122526 (2022)

F.A.Ivanyuk, S.V.Radionov, C.Ishizuka, S.Chiba

The memory effects in the Langevin description of nuclear fission

doi: 10.1016/j.nuclphysa.2022.122526
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2022KO07      Prog.Theor.Exp.Phys. 2022, 023D02 (2022)

T.Kouno, C.Ishizuka, T.Inakura, S.Chiba

Pairing strength in the relativistic mean-field theory determined from the fission barrier heights of actinide nuclei and verified by pairing rotation and binding energies

NUCLEAR STRUCTURE 16O, 40,48Ca, 56,58Ni, 88Sr, 90Zr, 112,124,132Sn, 146Gd, 208Pb, 234,236U, 240,242Pu, 242,244Cm; calculated binding energies, diffraction radii, surface thickness, pairing rotation energy, fission barriers using BCS pair correlation as a residual interaction in relativistic mean-field theory. Comparison with available data.

doi: 10.1093/ptep/ptab167
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2022KO28      Int.J.Mod.Phys. E31, 2250080 (2022)

T.Kouno, C.Ishizuka, K.Fujio, T.Inakura, S.Chiba

Effects of triaxiality and pairing interaction on fission barriers of actinide nuclei

NUCLEAR STRUCTURE 232,234,236,238,240U, 232,234Pu, 238,240,242,244Pu, 242,244,246,248Cm; calculated fission barriers. Comparison with available data.

doi: 10.1142/S021830132250080X
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2021DI04      Nucl.Data Sheets 173, 144 (2021)

P.Dimitriou, I.Dillmann, B.Singh, V.Piksaikin, K.P.Rykaczewski, J.L.Tain, A.Algora, K.Banerjee, I.N.Borzov, D.Cano-Ott, S.Chiba, M.Fallot, D.Foligno, R.Grzywacz, X.Huang, T.Marketin, F.Minato, G.Mukherjee, B.C.Rasco, A.Sonzogni, M.Verpelli, A.Egorov, M.Estienne, L.Giot, D.Gremyachkin, M.Madurga, E.A.McCutchan, E.Mendoza, K.V.Mitrofanov, M.Narbonne, P.Romojaro, A.Sanchez-Caballero, N.D.Scielzo

Development of a Reference Database for Beta-Delayed Neutron Emission

COMPILATION Z=2-87; compiled β-delayed neutron emission data; deduced total delayed neutron yields, time-dependent group parameters in 6- and 8-group representation, and aggregate delayed neutron spectra.

doi: 10.1016/j.nds.2021.04.006
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2021HA21      Phys.Rev. C 103, 045801 (2021)

T.Hayakawa, Y.Toh, A.Kimura, S.Nakamura, T.Shizuma, N.Iwamoto, S.Chiba, T.Kajino

Isomer production ratio of the 112Cd(n, γ) 113Cd reaction in an s-process branching point

NUCLEAR REACTIONS 112Cd(n, γ)113Cd/113mCd, E=66.8-8587 eV neutrons from BL04 neutron beam line of the MLF at J-PARC; measured E(n), I(n) by time-of-flight method, Eγ, Iγ using ANNRI array of two cluster HPGe detectors, eight coaxial HPGe detectors, and BGO Compton-suppression shields. 113Cd; deduced γ-rays intensities decaying to the ground state and the isomer, isomer production ratios for 21 neutron resonances from 66.8 to 8587 eV, minor s-process contribution from the 113Cd isomer to the solar abundance of 115Sn, Jπ of 14 neutron resonances from comparison of experimental γ-ray intensities with the corresponding expected theoretical yields for 1/2-, 1/2+ and 3/2- resonances using CCONE Hauser-Feshbach statistical model calculations.

doi: 10.1103/PhysRevC.103.045801
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset23743. Data from this article have been entered in the XUNDL database. For more information, click here.


2021SH36      Phys.Rev. C 104, 054609 (2021)

K.Shimada, C.Ishizuka, F.A.Ivanyuk, S.Chiba

Dependence of total kinetic energy of fission fragments on the excitation energy of fissioning systems

NUCLEAR REACTIONS 235U(n, F)236U*,239Pu(n, F)240Pu*, E=thermal MeV; calculated mass distribution of fission fragments, fission product yields, and compared with experimental results and with data in JENDL/FPY-2011 library. 235U(n, F)236U*,239Pu(n, F)240Pu*, E<50 MeV; calculated average total kinetic energy (TKE) of fission fragments, quadrupole moment (Q20) of fission fragments just after scission, dependence of average quadrupole moment (Q20) and average octupole (Q30) of fission fragments, distance between the center of mass of the nascent fragments just after scission using method based on the four-dimensional Langevin equations. Comparison with experimental data. Relevance to decrease of average total kinetic energy of fission fragments as the excitation energy of the compound nuclei increases, as indicated by experimental data of neutron-induced fission reactions.

doi: 10.1103/PhysRevC.104.054609
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2020BE28      J.Phys.(London) G47, 113002 (2020)

M.Bender, R.Bernard, G.Bertsch, S.Chiba, J.Dobaczewski, N.Dubray, S.A.Giuliani, K.Hagino, D.Lacroix, Z.Li, P.Magierski, J.Maruhn, W.Nazarewicz, J.Pei, S.Peru, N.Pillet, J.Randrup, D.Regnier, P.G.Reinhard, L.M.Robledo, W.Ryssens, J.Sadhukhan, G.Scamps, N.Schunck, C.Simenel, J.Skalski, I.Stetcu, P.Stevenson, S.Umar, M.Verriere, D.Vretenar, M.Warda, S.Aberg

Future of nuclear fission theory

doi: 10.1088/1361-6471/abab4f
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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, 256,257,258,259,264Fm, 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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2020LI21      Phys.Rev. C 101, 064616 (2020)

V.L.Litnevsky, F.A.Ivanyuk, G.I.Kosenko, S.Chiba

Formation of superheavy nuclei in 36S 238U and 64Ni 238U reactions

NUCLEAR REACTIONS 238U(36S, X)274Hs*, E*=35.8, 41.6, 47.3, 57.7 MeV; 238U(64Ni, X)302120*, E*=23.2, 33.5, 45.2, 64.1 MeV; calculated capture, fusion, fission, and evaporation residue formation σ(E), and neutron emission probabilities. Comparison with experimental results for 238U+36S, and with other theoretical calculations for 238U+64Ni.

doi: 10.1103/PhysRevC.101.064616
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2019KE06      Phys.Rev. C 100, 014611 (2019)

K.R.Kean, K.Nishio, K.Hirose, M.J.Vermeulen, H.Makii, R.Orlandi, K.Tsukada, A.N.Andreyev, I.Tsekhanovich, S.Chiba

Validation of the multinucleon transfer method for the determination of the fission barrier height

NUCLEAR REACTIONS 237Np, Ni(18O, 18O), (18O, 17O), (18O, 16O), (18O, 17N), (18O, 16N), (18O, 15N), (18O, 14N), (18O, 15C), (18O, 14C), (18O, 13C), (18O, 12C), (18O, 11C), (18O, 11B), (18O, 10B), (18O, 10Be), (18O, 9Be), (18O, 7Be), (18O, 7Li), (18O, 6Li), E=162 MeV; measured reaction products, particle identification plots, energy loss versus total energy, (charged particles)(fission fragment)-coin using four multiwire proportional counters for fission fragment detection and segmented silicon ΔE-E telescope for ejectile detection at the JAEA tandem accelerator facility; deduced fission probabilities and fission barrier heights for 239Np, 239Pu and 240Pu at E*=0-24 MeV using multinucleon transfer (MNT) method. Comparison with previous experimental values, and in RIPL3 database.

doi: 10.1103/PhysRevC.100.014611
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2019LI27      Phys.Rev. C 99, 054624 (2019)

V.L.Litnevsky, F.A.Ivanyuk, G.I.Kosenko, S.Chiba

Description of the mass-asymmetric fission of the Pt isotopes, obtained in the reaction 36Ar + 142Nd within the two-stage fusion-fission model

NUCLEAR REACTIONS 142Nd(36Ar, X)178Pt*,142Nd(36Ar, xn), E(cm)=122.78, 134.68, 142.58 MeV; calculated potential energy of projectile-target system, partial σ(E), fission fragment mass distribution, mass-energy distribution of fission events, and deformation energy and potential energy surface of 178Pt compound nucleus before neutron evaporation, neutron evaporation probability. Two-stage dynamical stochastic model. Comparison with experimental data. 178Pt; calculated deformation and potential energy surfaces.

doi: 10.1103/PhysRevC.99.054624
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2019SU21      J.Phys.(London) G46, 075103 (2019)

T.Suzuki, A.B.Balantekin, T.Kajino, S.Chiba

Neutrino-13C cross sections at supernova neutrino energies

NUCLEAR REACTIONS 13C(ν, E), (ν, ν), E<50 MeV; calculated σ. Comparison with available data.

doi: 10.1088/1361-6471/ab1c11
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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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2018KI18      Phys.Rev. C 98, 064611 (2018)

Y.Kikuchi, K.Ogata, T.Hayakawa, S.Chiba

Azimuthal angle distributions of neutrons emitted from the 9Be (γ, n) reaction with linearly polarized γ rays

NUCLEAR REACTIONS 9Be(polarized γ, n)8Be/9Be, E=1.5-16 MeV; calculated resonant excitation energies and widths of states in 9Be, σ(E), and anisotropy parameters for E1 and M1 transitions in 9Be using α+α+n three-body model with complex-scaled solutions of the Lippmann-Schwinger equation. Comparison with experimental values.

doi: 10.1103/PhysRevC.98.064611
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2018OK05      J.Nucl.Sci.Technol.(Tokyo) 55, 1 (2018)

S.Okumura, To.Kawano, P.Jaffke, P.Talou, S.Chiba

235U(n, f) Independent fission product yield and isomeric ratio calculated with the statistical Hauser-Feshbach theory

NUCLEAR REACTIONS 235U(n, F), E thermal; calculated Independent fission product yield and isomeric ratio using statistical Hauser-Feshbach theory.

doi: 10.1080/00223131.2018.1467288
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2018SU20      Phys.Rev. C 98, 034613 (2018)

T.Suzuki, S.Chiba, T.Yoshida, K.Takahashi, H.Umeda

Neutrino-nucleus reactions on 16O based on new shell-model Hamiltonians

NUCLEAR REACTIONS 16O(ν, e-)16F, 16O(ν-bar, e+)16N, 16O(ν, ν'), 16O(ν, e-p)15O, 16O(ν, e-np)14O, 16O(ν, e-pp)14N, 16O(ν, e-3He)13N, 16O(ν, e-α)12N, 16O(ν, e-p3He)12C, 16O(ν, e-pα)11C, 16O(ν-bar, e+n)15N, 16O(ν-bar, e+np)14C, 16O(ν-bar, e+nn)14N, 16O(ν-bar, e+t)13C, 16O(ν-bar, e+α)12B, 16O(ν-bar, e+nα)11B, 16O(ν, ν'n)15O, 16O(ν, ν'p)15N, 16O(ν, ν'np)14N, 16O(ν, ν'pp)14C, 16O(ν, ν't)13N, 16O(ν, ν'3He)13C, 16O(ν, ν'α)12C, 16O(ν, ν'nα)11C, 16O(ν, ν'pα)11B, E=0-100 MeV; calculated 16O spin-dipole strength, total σ(E), partial σ(E) from each multipole of excited product nucleus or single- and multi-particle emission channels using shell-model with new Hamiltonian SFO-tls, and branching ratios for various channels from Hauser-Feshbach statistical model. Comparison with other theoretical predictions. Discussed production yields of 6,7Li, 7,9Be, 10,11B, 11C from supernova simulations using theoretical reaction cross sections. Discussed effects of multiparticle emission channels on nucleosynthesis in core-collapse supernova explosion. Relevance to supernova (SN) neutrino detection at the Super-Kamiokande.

doi: 10.1103/PhysRevC.98.034613
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2018YO11      Phys.Rev. C 98, 041303 (2018)

T.Yoshida, T.Tachibana, S.Okumura, S.Chiba

Spectral anomaly of reactor antineutrinos based on theoretical energy spectra

NUCLEAR REACTIONS 235,238U, 239,241Pu(n, F), E=thermal; calculated spectra for electrons and antineutrinos from fission products within a power reactor using gross theory of β-decay for about 500 fission products. Comparison with inverse β-decay (IBD) data from Daya Bay reactors, and from BILL spectrometer at ILL-Grenoble. Relevance to future experiments at high-flux reactors at Grenoble (the STEREO Collaboration), Oak Ridge (the PROSPECT Collaboration), and at Mol (the SoLid Collaboration).

doi: 10.1103/PhysRevC.98.041303
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2017HI03      Nucl.Instrum.Methods Phys.Res. A856, 133 (2017)

K.Hirose, K.Nishio, H.Makii, I.Nishinaka, S.Ota, T.Nagayama, N.Tamura, S.Goto, A.N.Andreyev, M.J.Vermeulen, S.Gillespie, C.Barton, A.Kimura, H.Harada, S.Meigo, S.Chiba, T.Ohtsuki

Simultaneous measurement of neutron-induced fission and capture cross sections for 241Am at neutron energies below fission threshold

NUCLEAR REACTIONS 241Am(n, F), (n, γ), E<20 eV; measured reaction products, En, In, Eγ, Iγ; deduced σ, resonances. Comparison with JENDL-4.0, JEFF evaluated nuclear data libraries.

doi: 10.1016/j.nima.2016.12.021
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset23338.


2017HI10      Phys.Rev.Lett. 119, 222501 (2017)

K.Hirose, K.Nishio, S.Tanaka, R.Leguillon, H.Makii, I.Nishinaka, R.Orlandi, K.Tsukada, J.Smallcombe, M.J.Vermeulen, S.Chiba, Y.Aritomo, T.Ohtsuki, K.Nakano, S.Araki, Y.Watanabe, R.Tatsuzawa, N.Takaki, N.Tamura, S.Goto, I.Tsekhanovich, A.N.Andreyev

Role of Multichance Fission in the Description of Fission-Fragment Mass Distributions at High Energies

NUCLEAR REACTIONS 238U(18O, X)237U/238U/239U/240U/240Np/241Np/242Np/241Pu/242Pu/243Pu/244Pu, E=157.5 MeV; measured reaction products; deduced fragment yields.

doi: 10.1103/PhysRevLett.119.222501
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetE2661.


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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2017KO24      Phys.Rev. C 95, 064304 (2017)

H.Koura, S.Chiba

Improvement to the gross theory of β decay by inclusion of change in parity

RADIOACTIVITY 103,104,105,106Rb, 103,104,105,106Sr, 105,106,107,108,109Y, 106,107,108,109,110,111,112Zr, 107,108,109,110,111,112,113,114,115Nb, 109,110,111,112,113,114,115,116,117,118Mo, 112,113,114,115,116,117,118,119,120,121Tc, 116,117,118,119,120,121,122,123,124Ru, 117,118,119,120,121,122,123,124,125,126,127Rh, 120,121,122,123,124,125,126,127,128,129Pd, 124,125,126,127,128,129,130,131,132Ag, 126,127,128,129,130,131,132,133,134Cd, 128,129,130,131,132,133,134,135,136,137In, 134,135,136,137,138,139Sn, 46,47,48,49Ar, 65,66,67,68Ni, 90,91,92Kr(β-); Z=8-90, N=8-140(β-); calculated β-decay half-lives using improvement to the single-particle structure in the gross theory of β decay with the assignment of parity from Woods-Saxon¬Ětype single-particle potential. Comparison with previous gross theory of β decay, and with experimental values.

doi: 10.1103/PhysRevC.95.064304
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2017MA52      Chin.Phys.C 41, 094105 (2017)

D.S.Martyanov, E.Sh.Soukhovitskii, R.Capote, J.M.Quesada, S.Chiba

Predicting the optical observables for nucleon scattering on even-even actinides

NUCLEAR REACTIONS 228,230,232Th, 232,234,236,238U, 238,240,242,244Pu, 246,248Cm, 250Cf(n, X), E<200 MeV; analyzed available data; deduced extended Lane consistent dispersive coupled-channel optical model for nucleon scattering.

doi: 10.1088/1674-1137/41/9/094105
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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/A1/3 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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2016CA07      Phys.Rev. C 93, 024609 (2016)

R.Capote, N.Carjan, S.Chiba

Scission neutrons for U, Pu, Cm, and Cf isotopes: Relative multiplicities calculated in the sudden limit

RADIOACTIVITY 232,234,236,238,240U, 236,238,240,242,244Pu, 242,244,246,248,250Cm, 246,248,250,252,254Cf(SF); calculated scission-neutron (SN) multiplicity in the sudden limit as a function of mass asymmetry and as function of neutron number of fissioning nucleus, scission-neutron multiplicities averaged over all mass ratios. Fission yields calculated using GEF code. Scission-neutron (SN) multiplicity calculated also for the 235U(n, F), E=thermal reaction. Comparison with experimental data.

doi: 10.1103/PhysRevC.93.024609
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2016HA11      Phys.Rev. C 93, 044313 (2016)

T.Hayakawa, T.Shizuma, S.Miyamoto, S.Amano, A.Takemoto, M.Yamaguchi, K.Horikawa, H.Akimune, S.Chiba, K.Ogata, M.Fujiwara

Spatial anisotropy of neutrons emitted from the 56Fe(γ, n)55Fe reaction with a linearly polarized γ-ray beam

NUCLEAR REACTIONS 56Fe(polarized γ, n), (polarized γ, γ'), E<16.7 MeV laser Compton scattered beam at NewSUBARU electron storage ring; measured neutron spectra by TOF method, angular distribution of neutrons, neutron azimuthal anisotropy. 55Fe; deduced levels, J, π.

doi: 10.1103/PhysRevC.93.044313
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2016HA37      Phys.Rev. C 94, 055803 (2016)

T.Hayakawa, Y.Toh, M.Huang, T.Shizuma, A.Kimura, S.Nakamura, H.Harada, N.Iwamoto, S.Chiba, T.Kajino

Measurement of the isomer production ratio for the 112Cd(n, γ)113Cd reaction using neutron beams at J-PARC

NUCLEAR REACTIONS 112Cd(n, γ), E<5 keV; measured Eγ, Iγ, time-of-flight spectra, nγ-coin, γ-ray intensity ratios versus neutron energy using the Accurate Neutron-Nucleus Reaction Measurement Instrument (ANNRI) at J-PARC facility; deduced isomer production ratio as function of neutron energies, including neutron resonances. Relevance to s-process branching point for nucleosynthesis.

doi: 10.1103/PhysRevC.94.055803
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2016IC01      Phys.Rev. C 93, 064612 (2016)

D.Ichinkhorloo, M.Aikawa, S.Chiba, Y.Hirabayashi, K.Kato

Low energy scattering cross sections for n + 6, 7Li reactions using the continuum-discretized coupled-channels method

NUCLEAR REACTIONS 6,7Li(n, n), (n, n'), E=1-24 MeV; calculated elastic and inelastic scattering σ(E, θ) using n+(α+d) and n+(α+t) cluster models, continuum-discretized coupled-channel (CDCC) method with the JLM effective nucleon-nucleon interaction. Comparison with experimental and evaluated data.

doi: 10.1103/PhysRevC.93.064612
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2016LE13      Phys.Lett. B 761, 125 (2016)

R.Leguillon, K.Nishio, K.Hirose, H.Makii, I.Nishinaka, R.Orlandi, K.Tsukada, J.Smallcombe, S.Chiba, Y.Aritomo, T.Ohtsuki, R.Tatsuzawa, N.Takaki, N.Tamura, S.Goto, I.Tsekhanovich, C.M.Petrache, A.N.Andreyev

Fission fragments mass distributions of nuclei populated by the multinucleon transfer channels of the 18O + 232Th reaction

NUCLEAR REACTIONS 232Th(18O, X)231Th/232Th/233Th/234Th/232Pa/233Pa/234Pa/235Pa/236Pa/234U/235U/236U/237U/238U, E=157 MeV; measured fission fragments; deduced fission yields.

doi: 10.1016/j.physletb.2016.08.010
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2016SO16      Phys.Rev. C 94, 064605 (2016); Erratum Phys.Rev. C 102, 059901 (2020)

E.Sh.Soukhovitskii, R.Capote, J.M.Quesada, S.Chiba, D.S.Martyanov

Nucleon scattering on actinides using a dispersive optical model with extended couplings

NUCLEAR REACTIONS 233,235,238U, 232Th(n, X), E=0.001-200 MeV; calculated total σ(E) using dispersive potential with multiple-band couplings, compound-nucleus formation cross section using the rigid-rotor RIPL 2408 potential and the potential derived in the present work. Dispersive isospin-dependent coupled-channels optical model analysis, and extended Tamura's coupling formalism for low-lying bands of vibrational nature in even-even and single-particle nature in odd-A actinides. Comparison with experimental data and with RIPL 2408 potential. 232Th, 233,235,238U, 239Pu; calculated average resonance parameters using derived optical model potential, and compared with experimental data and with RIPL 2408 potential and evaluated data, ground-state deformation parameters β2, β4 and β6, and interband effective coupling parameters.

doi: 10.1103/PhysRevC.94.064605
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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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2014AR12      Phys.Rev. C 90, 054609 (2014)

Y.Aritomo, S.Chiba, F.Ivanyuk

Fission dynamics at low excitation energy

NUCLEAR REACTIONS 236U(n, F) at E*=20 MeV; calculated potential energy as function of deformation, mass distribution of fission fragments, trajectories of the fission process, nuclear shapes around the scission point, distribution of fission events as function of deformation at the scission point, total kinetic energy distribution (TKE) of fission events as function of deformation parameter. Fluctuation-dissipation model using Langevin equations for dynamics of fission process, within the two-center shell-model parameterization (TCSMP) and the shape characterized by five deformation parameters.

doi: 10.1103/PhysRevC.90.054609
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2014CH38      Nucl.Data Sheets 119, 229 (2014)

S.Chiba, K.Nishio, H.Makii, Y.Aritomo, I.Nishinaka, T.Ishii, K.Tsukada, M.Asai, K.Furutaka, S.Hashimoto, H.Koura, K.Ogata, T.Ohtsuki, T.Nagayama

Surrogate Reactions Research at JAEA/Tokyo Tech

NUCLEAR REACTIONS 235,238U(18O, F), E not given; measured reaction products; deduced fission fragment mass yields. 238U(18O, 16O), E not given; measured ejectiles, fission fragments; deduced fission fragment mass distribution, yields vs E*, unnormalized fission probability; calculated fission fragment mass distribution using multidimensional Langevin method. 239U(n, F), E=0.5-20 MeV; measured fission fragments; deduced fission σ vs neutron energy. 155Gd(18O, 16O), E not given; measured reaction products. 156Gd(n, γ), E=0.5-3.5 MeV; deduced σ using SRM (surrogate ratio method). Compared with ENDF/B/VII.1.

doi: 10.1016/j.nds.2014.08.063
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2014HO14      Phys.Lett. B 737, 109 (2014)

K.Horikawa, S.Miyamoto, T.Mochizuki, S.Amano, D.Li, K.Imasaki, Y.Izawa, K.Ogata, S.Chiba, T.Hayakawa

Neutron angular distribution in (γ, n) reactions with linearly polarized γ-ray beam generated by laser Compton scattering

NUCLEAR REACTIONS 197Au, 127I, Cu(polarized γ, n), E<16.7 MeV; measured reaction products, En, In, Eγ, Iγ; deduced yields, neutron angular distribution anisotropy. Comparison with available data.

doi: 10.1016/j.physletb.2014.08.024
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2014IV06      Phys.Rev. C 90, 054607 (2014)

F.A.Ivanyuk, S.Chiba, Y.Aritomo

Scission-point configuration within the two-center shell model shape parameterization

NUCLEAR REACTIONS 236U(n, F), E=thermal; calculated total deformation energy, shell component of scission point deformation energy, total energy (liquid drop plus shell correction) at the scission point, deformation energy before and after scission as function of elongation and heavy fragment mass number, mass distribution of fission fragments, excitation energy available for prompt neutron emission. 233Th, 236U, 240Pu, 246Cm(n, F), E=thermal; calculated total kinetic energies (TKEs), total excitation energies during the neck rupture. 232Th, 233,235,238U, 237Np, 239,240,241Pu, 241,243Am, 245Cm(n, F), E not given; calculated total neutron multiplicity. Optimal shape descriptions for fissioning systems. Two-center shell model parameterization for scission-point configuration. Comparison with experimental data.

doi: 10.1103/PhysRevC.90.054607
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2014MA62      Nucl.Data Sheets 119, 361 (2014)

H.Makii, S.Ota, T.Ishii, K.Nishio, I.Nishinaka, K.Furutaka, Y.Wakabayashi, S.Chiba, M.Igashira

Development of Anti-Compton LaBr3(Ce) Spectrometer for Measurement of Surrogate Reactions

NUCLEAR REACTIONS 27Al(p, γ), E=992, 2046 keV; measured Eγ, Iγ. 155,157Gd(18O, 16O), E*=3-14 MeV; measured Eγ, Iγ, (16O)γ-coin. LaBr3(Ce) spectrometer. 7

doi: 10.1016/j.nds.2014.08.099
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2014QU02      Nucl.Data Sheets 118, 270 (2014)

J.M.Quesada, R.Capote, E.Sh.Soukhovitskii, S.Chiba

Rotational-vibrational Description of Nucleon Scattering on Actinide Nuclei Using a Dispersive Coupled-channel Optical Model

NUCLEAR REACTIONS 232Th, 238U(p, x), E=threshold-100 MeV; calculated total σ using DCCOMP (dispersive optical model with different types of rotational bands). Compared with data and calculations with RIPL potentials.

doi: 10.1016/j.nds.2014.04.055
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2013AR07      Phys.Rev. C 88, 044614 (2013)

Y.Aritomo, S.Chiba

Fission process of nuclei at low excitation energies with a Langevin approach

RADIOACTIVITY 234U, 236U, 240Pu(SF); calculated potential energy surfaces, mass distribution of fission fragments (MDFF) for kinetic energy of 20 MeV for the fissioning nucleus. Dynamical model based on the fluctuation-dissipation theorem using Langevin equations. Comparison with experimental data.

NUCLEAR REACTIONS 236U(d, F), E=16.3, 20, 30, 40 MeV; calculated mass distribution of fission fragments (MDFF). Dynamical model based on the fluctuation-dissipation theorem using Langevin equations. Comparison with experimental data.

doi: 10.1103/PhysRevC.88.044614
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2013KO01      J.Phys.Soc.Jpn. 82, 014201 (2013)

H.Koura, S.Chiba

Single-Particle Levels of Spherical Nuclei in the Superheavy and Extremely Superheavy Mass Region

NUCLEAR STRUCTURE 256U, 298Fl, 310126, 342Fl, 366138, 462154, 472164; calculated single-particle level energies, J, π, single particle potentials. deduced beta stable nuclei 298Fl, 310164. Modified Woods-Saxon potential calculations.

doi: 10.7566/JPSJ.82.014201
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2012AR02      Phys.Rev. C 85, 044614 (2012)

Y.Aritomo, K.Hagino, K.Nishio, S.Chiba

Dynamical approach to heavy-ion induced fission using actinide target nuclei at energies around the Coulomb barrier

NUCLEAR REACTIONS 238U(34S, X), (36S, X), (30Si, X), E(cm)=130-180 MeV; analyzed experimental data for σ(E) and fission fragment mass distribution in heavy-ion induced fission. 238U(36S, X)274Hs*, E*=39.5 MeV; 238U(30Si, X)268Sg*, E*=35.5 MeV; calculated potential energy surfaces and nuclear shapes near scission point, probability distribution contour maps, time evolution of the probability distribution, Langevin trajectories. Coupled Channel calculations and a fluctuation-dissipation model for fusion-fission, quasifission and deep quasifission processes.

doi: 10.1103/PhysRevC.85.044614
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2012CH25      Phys.Rev. C 85, 065807 (2012)

M.-K.Cheoun, E.Ha, T.Hayakawa, S.Chiba, K.Nakamura, T.Kajino, G.J.Mathews

Neutrino induced reactions for ν-process nucleosynthesis of 92Nb and 98Tc

NUCLEAR REACTIONS 92Zr(ν, e)92Nb, 93Nb[ν, ν'n)92Nb, 93Nb(ν-bar, ν-bar'n]92Nb, 98Mo(ν, e)98Tc, 99Ru(ν, ν'p)98Tc, 99Ru(ν-bar, ν-bar'p)98Tc, E<80 MeV; calculated B(GT) strength distributions, energy and temperature dependent σ in charge current (CC) and neutral current (NC) reactions. Quasiparticle random phase approximation calculations. Nucleosynthesis of odd-odd 98Tc and 92Nb nuclei by the ν-process in core-collapse supernovae.

doi: 10.1103/PhysRevC.85.065807
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2012IC05      Phys.Rev. C 86, 064604 (2012)

D.Ichinkhorloo, Y.Hirabayashi, K.Kato, M.Aikawa, T.Matsumoto, S.Chiba

Analysis of 7Li(n, n')7Li reactions using the continuum-discretized coupled-channels method

NUCLEAR REACTIONS 7Li(n, n), (n, n')7Li*, E=11.5-24.0 MeV; calculated σ(θ, E) for elastic and inelastic channels, neutron spectra in terms of double-differential σ(E, θ). Continuum-discretized coupled-channels (CDCC) method, α+t cluster model. Comparison with experimental data.

doi: 10.1103/PhysRevC.86.064604
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2012OR01      J.Phys.(London) G39, 045101 (2012)

S.Oryu, Y.Hiratsuka, S.Nishinohara, S.Chiba

Proton-proton phase shifts calculations in momentum space by a rigorous Coulomb treatment

doi: 10.1088/0954-3899/39/4/045101
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2011AR11      Phys.Rev. C 84, 024602 (2011)

Y.Aritomo, S.Chiba, K.Nishio

Dynamical model of surrogate reactions

NUCLEAR REACTIONS 236,238U(18O, 16O)238U/240U, E(cm)=133.5 MeV; calculated potential energy surfaces for 240U and 256Fm, spin distributions, fragment mass distributions. Dynamical model of surrogate reactions employing Multidimensional Langevin equations. Comparison with experimental data.

doi: 10.1103/PhysRevC.84.024602
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2011CH55      Phys.Rev. C 84, 054602 (2011)

S.Chiba, O.Iwamoto, Y.Aritomo

Spin-dependent observables in surrogate reactions

NUCLEAR REACTIONS 237,239U(n, γ)238U*/240U*, E=0-5 MeV; calculated spectra of evaporated neutrons, multiplicity of γ rays, spectra of cascading γ rays, fission fragment mass distribution as function of the spin of the compound nucleus. Hauser-Feshbach theory , and Fluctuation-dissipation theorem. Surrogate ratio methods.

doi: 10.1103/PhysRevC.84.054602
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2011HA22      Phys.Rev. C 83, 054617 (2011)

S.Hashimoto, M.Yahiro, K.Ogata, K.Minomo, S.Chiba

Effective radii of deuteron-induced reactions

NUCLEAR REACTIONS 9Be, 27Al, 58Ni, 93Nb, 208Pb(d, X), E=200 MeV/nucleon; 7Li(d, n), E=40 MeV; calculated cross sections, σ(θ), effective radius and width, proton and neutron stripping, elastic breakup, total fusion. Continuum-discretized coupled-channels (CDCC) method and eikonal reaction theory (ERT). Comparison with Glauber model calculations and experimental data.

doi: 10.1103/PhysRevC.83.054617
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2011IC05      J.Nucl.Sci.Technol.(Tokyo) 48, 1357 (2011)

D.Ichinkhorloo, T.Matsumoto, Y.Hirabayashi, K.Kato, S.Chiba

Analysis of n + 6Li Reactions Using the Continuum-Discretized Coupled-Channels Method

NUCLEAR REACTIONS 6Li(n, n'), E=11.5, 14.1, 18 MeV; calculated σ(θ), σ(θ, E); deduced neutron spectra. Continuum-discretized coupled-channels (CDCC) approach.

doi: 10.3327/jnst.48.1357
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2011IW04      J.Korean Phys.Soc. 59, 1224s (2011)

O.Iwamoto, T.Nakagawa, S.Chiba, N.Otuka

Covariance Evaluation for Actinide Nuclear Data in JENDL-4

COMPILATION 233,235,238U(n, F), E=0.01-20 eV;239Pu(n, F), E=0.01 eV-20 MeV;235U, 237Np, 241Am(n, γ), E=0.01-20 eV; evaluated σ, σ covariances. 237Np(n, γ), E=0.001-20 MeV; calculated σ using different models and parameters; evaluated σ covariance. 233U(n, X), E=0.001-20 MeV; evaluated σ, σ uncertainty, covariance. 232Th, 232,233,234,235,236,238U, 237Np, 239,240,241,242Pu, 241,242m,243Am, 242,244,245Cm(n, F), (n, γ), E=thermal; evaluated σ uncertainty, covariance. 242,244,245Cm(n, F), E=0.1-20 MeV; evaluated σ uncertainty, covariance. 233U(n, F), E=0.01-20 MeV; evaluated prompt, delayed neutron multiplicity. Comparison with data.

doi: 10.3938/jkps.59.1224
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2011LE31      J.Korean Phys.Soc. 59, 1019s (2011)

J.-Y.Lee, E.Sh.Soukhovitskii, Y.Kim, R.Capote, S.Chiba, J.M.Quesada

Self-Consistent Analyses of Nuclear Level Structures, and Nucleon Interaction Data of Even-even Sn Isotopes

NUCLEAR REACTIONS 120Sn(n, n), E=0.1-200 MeV;120Sn(n, p), E=10-200 Mev; calculated σ; 120Sn(n, n), (n, n'), E=0.94, 11.0, 13.9, 16.1 MeV;120Sn(p, p), E=9.7, 16.0, 20.4, 24.6, 30.3, 40.0, 61.5, 100.4, 134.7, 156.0 MeV;120Sn(p, p'), E=20.4, 24.6, 61.5 MeV; calculated σ(θ); 116Sn(p, n), E=22.8 MeV;118Sn(p, n), E=22.8, 25 MeV;120Sn(p, n), E=22.8, 25, 35, 45 MeV; calculated σ(θ). Deduced optical potential parameters. Soft-rotator model, coupled-channels optical model with dispersive Lane-consistent potential. Comparison with data.

NUCLEAR STRUCTURE 120Sn; calculated levels, J, π, rotational band using soft-rotator model. Comparison with data.

doi: 10.3938/jkps.59.1019
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2011MA40      Phys.Rev. C 83, 064611 (2011)

T.Matsumoto, D.Ichinkhorloo, Y.Hirabayashi, K.Kato, S.Chiba

Systematic description of the 6Li(n, n')6Li* → d + α reactions with the microscopic coupled-channels method

NUCLEAR REACTIONS 6Li(n, n), (n, n'), E=7.47-24.0 MeV; calculated elastic and inelastic σ(θ), neutron spectra using the continuum-discretized coupled-channels method with the Jeukenne-Lejeune-Mahaux effective nucleon-nucleon interaction, and α+d cluster model for 6Li. Comparison with experimental data.

doi: 10.1103/PhysRevC.83.064611
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2011MI05      Nucl.Phys. A856, 55 (2011)

F.Minato, S.Chiba

Fission barrier of actinide nuclei with double-Λ particles within the Skyrme-Hartree-Fock method

NUCLEAR STRUCTURE 13B, 240U double hypernuclei; calculated fission barriers.

doi: 10.1016/j.nuclphysa.2011.02.127
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2011OG08      J.Nucl.Sci.Technol.(Tokyo) 48, 1337 (2011)

K.Ogata, S.Hashimoto, S.Chiba

Three-Body Model Calculation of Spin Distribution in Two-Nucleon Transfer Reaction for the System of 238U(18O, 16O)240U Reaction

NUCLEAR REACTIONS 238U(18O, 16O), E=180 MeV; calculated σ(θ), partial elastic cross sections. CDCC-BA method.

doi: 10.3327/jnst.48.1337
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2011OG12      J.Phys.:Conf.Ser. 312, 082008 (2011)

K.Ogata, T.Matsumoto, S.Hashimoto, K.Minomo, T.Egami, Y.Iseri, M.Kohno, S.Chiba, C.A.Bertulani, Y.R.Shimizu, M.Kamimura, M.Yahiro

Status of breakup reaction theory

NUCLEAR REACTIONS 7Li(d, γ), (d, n), (d, p), E=10-50 MeV; calculated σ. 90Zr(p, p), E=65, 800 MeV; calculated dσ with and without Brieva-Rook localization. 208Pb(8B, X), E=250 MeV/nucleon; calculated breakup σ including relativistic corrections. 209Bi(6He, 6He), E=22.5 MeV; calculated σ with and without breakup effects, B(E1) strength distribution. Three- and four-body CDCC.

doi: 10.1088/1742-6596/312/4/082008
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2011OH05      J.Korean Phys.Soc. 59, 1817s (2011)

A.Ohrn, C.Gustavsson, M.Blann, V.Blideanu, J.Blomgren, S.Chiba, H.Duarte, F.Haddad, C.Kalbach, J.Klug, A.Koning, C.Le brun, C.Lebrun, F.R.Lecolley, X.Ledoux, N.Marie-noury, P.Mermod, L.Nilsson, M.Osterlund, S.Pomp, A.Prokofiev, U.Tippawan, Y.Watanabe

Measurements of Inelastic Neutron Scattering at 96 MeV from Carbon, Iron, Yttrium and Lead

NUCLEAR REACTIONS 12C, 56Fe, 89Y, 208Pb(n, n'x), E=96 MeV; measured En, In(θ) using SCANDAL (SCAttered Nucleon Detection AssembLy); deduced σ(E, θ), σ(θ); calculated σ(E, θ), σ(θ) using TALYS, QMD, PRECO. Compared with UCLA data at 65 MeV.

doi: 10.3938/jkps.59.1817
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2011SH01      J.Nucl.Sci.Technol.(Tokyo) 48, 1 (2011)

K.Shibata, O.Iwamoto, T.Nakagawa, N.Iwamoto, A.Ichihara, s.Kunieda, S.Chiba, K.Furutaka, N.Otuka, T.Ohsawa, T.Murata, H.Matsunobu, A.Zukeran, S.Kamada, J.-i.Katakura

JENDL-4.0: A New Library for Nuclear Science and Engineering

doi: 10.3327/jnst.48.1
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2011SH34      J.Korean Phys.Soc. 59, 1046s (2011)

K.Shibata, O.Iwamoto, T.Nakagawa, N.Iwamoto, A.Ichihara, S.Kunieda, S.Chiba, J.Katakura, N.Otuka

JENDL-4.0: A New Library for Innovative Nuclear Energy Systems

COMPILATION Z=89-100(n, f), (n, 2n), E=thermal-2.25 keV; compiled, evaluated σ, fission products σ for (n, 2n), (n, γ). 1,2H, 9Be, 10B, C, 14N, 16O, Si, Ca, Ti, 50,51V, Cr, 55Mn, 56,57,59Fe, 59Ni, 169Tm, Yb, 174,176,177,178,179,180,181,182Hf, 180,182,183,184,186W, Os, 197Au, Pb, 209Bi(n, X), E not given; compiled, evaluated σ; deduced resolved resonance parameters, coupled channel optical model parameters. DWBA, statistical model codes POD, CCONE.

doi: 10.3938/jkps.59.1046
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2011UT01      Phys.Rev. C 83, 021301 (2011)

Y.Utsuno, S.Chiba

Multiparticle-multihole states around 16O and correlation-energy effect on the shell gap

NUCLEAR STRUCTURE 12C, 15,16,17O, 20Ne, 52,60Fe, 55,56,57Ni; calculated cross shell correlation energies. 16,18,20O, 20Ne; calculated first three 0+ states. Shell-model calculation in the full p-sd model space using PSDWBT and GXPF1A interactions.

doi: 10.1103/PhysRevC.83.021301
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2011WA32      J.Korean Phys.Soc. 59, 1040s (2011)

Y.Watanabe, K.Kosako, S.Kunieda, S.Chiba, R.Fujimoto, H.Harada, M.Kawai, F.Maekawa, T.Murata, H.Nakashima, K.Niita, N.Shigyo, S.Shimakawa, N.Yamano, T.Fukahori

Status of JENDL High Energy File

COMPILATION Z=1-95(n, X), (p, X), E=0-3 GeV; compiled, evaluated σ, dσ.

doi: 10.3938/jkps.59.1040
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2010CH08      Phys.Rev. C 81, 044604 (2010)

S.Chiba, O.Iwamoto

Verification of the surrogate ratio method

NUCLEAR REACTIONS 197Au, 193Ir, 236,238U(n, γ), E<5 MeV; calculated fission and capture probabilities for positive and negative parity states in final nuclei. Verification of surrogate ratio method.

doi: 10.1103/PhysRevC.81.044604
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2010CH40      Phys.Rev. C 82, 035504 (2010)

M.-K.Cheoun, E.Ha, T.Hayakawa, T.Kajino, S.Chiba

Neutrino reactions on 138La and 180Ta via charged and neutral currents by the quasiparticle random-phase approximation

NUCLEAR REACTIONS 139La, 181Ta(ν, ν'), 138Ba(ν, e)138La, 180Hf(ν, e)180Ta, E=0-80 MeV; calculated σ by neutral and charged current reactions using standard quasi-particle random phase approximation (QRPA) with neutron-proton pairing and neutron-neutron and proton-proton pairing correlations. Astrophysical relevance.

RADIOACTIVITY 138Ba, 180Hf(β-); calculated Gamow-Teller strength distribution B(GT) using QRPA.

doi: 10.1103/PhysRevC.82.035504
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2010HA13      Phys.Rev. C 81, 052801 (2010)

T.Hayakawa, T.Kajino, S.Chiba, G.J.Mathews

New estimate for the time-dependent thermal nucleosynthesis of 180Tam

NUCLEAR STRUCTURE 180Ta, 180mTa; calculated time-dependent production and transition widths of 180gTa 180mTa in ν and γ processes in supernovae. Comparison with production of 138La in ν process.

doi: 10.1103/PhysRevC.81.052801
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2010HA27      Phys.Rev. C 82, 058801 (2010)

T.Hayakawa, P.Mohr, T.Kajino, S.Chiba, G.J.Mathews

Reanalysis of the (J=5) state at 592 keV in 180Ta and its role in the υ-process nucleosynthesis of 180Ta in supernovae

NUCLEAR STRUCTURE 180mTa; analyzed production and freeze out of 180mTa through the influence of a spin 5 state at 592 keV. Implication for coproduction by neutrino nucleosynthesis with an electron neutrino temperature of kT AP 4 MeV. 180Ta; discussed low-K and high-K rotational band structures; deduced astrophysical reaction rates.

doi: 10.1103/PhysRevC.82.058801
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2010MA46      Nucl.Phys. A834, 561c (2010)

T.Maruyama, T.Tatsumi, S.Chiba

Liquid-gas phase transition in asymmetric nuclear matter at finite temperature

doi: 10.1016/j.nuclphysa.2010.01.091
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2009HA48      Astrophys.J. 707, 859 (2009)

T.Hayakawa, T.Shizuma, S.Chiba, T.Kajino, Y.Hatsukawa, N.Iwamoto, N.Shinohara, H.Harada

Neutron Capture Cross Section to 113Cd Isomer and s-Process Contribution to Rare p-Nuclide 115Sn

NUCLEAR REACTIONS 112Cd(n, γ), E thermal; measured reaction products, Eγ, Iγ; deduced isomeric state s, resonance integral. Comparison with JENDL-3.3 evaluated nuclear data library, Hauser-Feshbach statistical model calculations.

doi: 10.1088/0004-637X/707/2/859
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset23113.


2009IW02      J.Nucl.Sci.Technol.(Tokyo) 46, 510 (2009)

O.Iwamoto, T.Nakagawa, N.Otuka, S.Chiba, K.Okumura, G.Chiba, T.Ohsawa, K.Furutaka

JENDL Actinoid File 2008

doi: 10.3327/jnst.46.510
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2009KU13      J.Nucl.Sci.Technol.(Tokyo) 46, 914 (2009)

S.Kunieda, S.Chiba, K.Shibata, A.Ichihara, O.Iwamoto, N.Iwamoto, T.Fukahori, E.Sh.Sukhovitskii

Extensive Study of the Soft-Rotator Model Hamiltonian Parameters for Medium and Heavy Even-Even Nuclei

NUCLEAR STRUCTURE 56,58Fe, 60,62,64Ni, 64,66,68,70Zn, 70,72,74,76Ge, 74,76,78,80,82Se, 86Sr, 96,98,100Mo, 102Ru, 104,106,108,110Pd, 106,108,110,112,114,116Cd, 116,118,120,122,124Sn, 122,124,126,128,130Te, 144,150Nd, 148,150,152,154Sm, 160Gd, 164Dy, 166,168Er, 174,176Yb, 178,180Hf, 182,184W, 192Os, 194Pt, 232Th, 238U; calculated excitation energy levels, J, π, quadrupole deformation parameters, B(E2), B(E3); deduced shell structure effects, agreement with mass-model results. Comparison with experimental results, SRM-CC analysis.

NUCLEAR REACTIONS 56,58Fe, 60,62,64Ni, 64,66,68,70Zn, 70,72,74,76Ge, 74,76,78,80,82Se, 86Sr, 96,98,100Mo, 102Ru, 104,106,108,110Pd, 106,108,110,112,114,116Cd, 116,118,120,122,124Sn, 122,124,126,128,130Te, 144,150Nd, 148,150,152,154Sm, 160Gd, 164Dy, 166,168Er, 174,176Yb, 178,180Hf, 182,184W, 192Os, 194Pt, 232Th, 238U(p, p'), E = 22.3, 65 MeV; calculated inelastic proton σ(θ). Coupled-channel optical model analysis.

doi: 10.3327/jnst.46.914
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2009LE20      Phys.Rev. C 79, 064612 (2009)

J.-Y.Lee, I.Hahn, Y.Kim, S.-W.Hong, S.Chiba, E.Sh.Soukhovitskii

Optical potentials for nuclear level structures and nucleon interactions data of tin isotopes based on the soft-rotator model

NUCLEAR STRUCTURE 116,118,120,122Sn; calculated levels, J, π and deformation parameters based on the soft rotor model. Comparison with experimental data.

NUCLEAR REACTIONS 116,118,120,122Sn(n, n), (n, n'), E=9.95-24 MeV; 116,118,120,122Sn(p, p), (p, p'), E=9.7-156.0 MeV; analyzed σ, σ(θ), optical potential parameters using coupled-channels optical-model calculations. 120Sn(n, X), E=0.1-200 MeV; 120Sn(p, X), E=10-200 MeV; calculated total σ. Comparison with experimental data.

doi: 10.1103/PhysRevC.79.064612
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2009MI28      Nucl.Phys. A831, 150 (2009)

F.Minato, S.Chiba, K.Hagino

Fission of heavy Λ hypernuclei with the Skyrme-Hartree-Fock approach

NUCLEAR STRUCTURE 239U; calculated fission barrier height, single particle levels and associated parameters for bound hypernucleus using Skyrme-Hartree-Fock-BCS method. Comparison with 238U.

doi: 10.1016/j.nuclphysa.2009.09.063
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2008CA32      J.Nucl.Sci.Technol.(Tokyo) 45, 333 (2008)

R.Capote, S.Chiba, E.Sh.Soukhovitskii, J.M.Quesada, E.Bauge

A Global Dispersive Coupled-Channel Optical Model Potential for Actinides

doi: 10.1080/18811248.2008.9711442
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2008CH05      Phys.Rev. C 77, 015809 (2008)

S.Chiba, H.Koura, T.Hayakawa, T.Maruyama, T.Kawano, T.Kajino

Direct and semi-direct capture in low-energy (n, γ) reactions of neutron-rich tin isotopes and its implications for r-process nucleosynthesis

NUCLEAR REACTIONS 16O(n, γ), E=0.01-10 MeV; 124,126,128,130,134,136,138Sn(n, γ), E=30 keV; 122Sn(n, γ), E=1 keV-20 MeV; 208Pb(n, γ), E=0-20 MeV; calculated neutron capture cross sections. 132Sn(n, γ), E=1 keV-20 MeV; calculated neutron capture cross sections, reaction rates. 132,133Sn; calculated levels, J, π, compared with experiment.

doi: 10.1103/PhysRevC.77.015809
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2008HA21      Phys.Rev. C 77, 068801 (2008)

T.Hayakawa, T.Shizuma, S.Miyamoto, S.Amano, K.Horikawa, K.Ishihara, M.Mori, K.Kawase, M.Kando, N.Kikuzawa, S.Chiba, T.Mochizuki, T.Kajino, M.Fujiwara

Half-life of the 164Ho by the (γ, n) reaction from laser Compton scattering gamma rays at the electron storage ring NewSUBARU

NUCLEAR REACTIONS 165Ho(γ, n), E=3.3-16.7 MeV; measured Eγ, Iγ, half-life; calculated σ. 164Ho; deduced levels, J, π.

RADIOACTIVITY 164Ho(β+), (β-); measured Eγ, Iγ. 164Dy, 164Er; deduced levels, J, π.

doi: 10.1103/PhysRevC.77.068801
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Data from this article have been entered in the XUNDL database. For more information, click here.


2008IW05      Nucl.Data Sheets 109, 2885 (2008)

O.Iwamoto, T.Nakagawa, N.Otuka, S.Chiba, K.Okumura, G.Chiba

JENDL Actinoid File 2008 and Plan of Covariance Evaluation

NUCLEAR REACTIONS 242Am(n, f), E < 50 MeV; analyzed cross sections.

doi: 10.1016/j.nds.2008.11.028
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2008YE02      Phys.Rev. C 78, 024611 (2008)

T.Ye, Y.Watanabe, K.Ogata, S.Chiba

Analysis of deuteron elastic scattering from 6, 7Li using the continuum discretized coupled channels method

NUCLEAR REACTIONS 6,7Li(d, d), E=10-50 MeV; calculated phenomenological optical potentials, σ(θ). 6,7Li(p, p), (p, X), (n, n), (n, X), (d, d), E=5-50 MeV; analyzed angular distributions, σ(θ). Continuum discretized coupled channel calculations. Comparison with experimental data.

doi: 10.1103/PhysRevC.78.024611
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2007BO19      Phys.Rev. C 75, 054618 (2007)

L.Bonneau, T.Kawano, T.Watanabe, S.Chiba

Nucleon direct-semidirect radiative capture with Skyrme-Hartree-Fock-BCS bound states

NUCLEAR REACTIONS 122Sn, 132Sn, 208Pb, 238U(n, γ), E< 20MeV; calculated direct-semidirect capture cross sections by calculating a transition amplitude to the Hartree-Fock-BCS bound states. Compared results to available data.

doi: 10.1103/PhysRevC.75.054618
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2007KU14      J.Nucl.Sci.Technol.(Tokyo) 44, 838 (2007)

S.Kunieda, S.Chiba, K.Shibata, A.Ichihara, E.Sh.Sukhovitskii

Coupled-channels Optical Model Analyses of Nucleon-induced Reactions for Medium and Heavy Nuclei in the Energy Region from 1keV to 200 MeV

NUCLEAR REACTIONS Fe, Ni, Cu, Y, Zr, Nb, Mo, Sn, W, Au, Pb, Bi, Th, U(n, X), (p, X), E=1 keV - 200 MeV; analyzed cross sections using coupled channel method.

doi: 10.1080/18811248.2007.9711321
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2007NI09      Nucl.Phys. A790, 277c (2007)

S.Nishinohara, S.Chiba, S.Oryu

The Coulomb scattering in momentum space for few-body systems

NUCLEAR REACTIONS 1H(p, X), E(cm)≈0-200 MeV; calculated Coulomb phase shift.

doi: 10.1016/j.nuclphysa.2007.03.044
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2007OK01      Phys.Rev. C 75, 034616 (2007)

N.T.Okumusoglu, F.Korkmaz Gorur, J.Birchall, E.Sh.Soukhovitskii, R.Capote, J.M.Quesada, S.Chiba

Angular distributions of protons scattered by 40Ar nuclei with excitation of the 2+(1.46 MeV) and 3-(3.68 MeV) collective levels for incident energies of 25.1, 32.5, and 40.7 MeV

NUCLEAR REACTIONS 40Ar(p, p), (p, p'), E=25.1, 32.5, 40.7 MeV; measured σ(E, θ), Ay(θ). 40Ar deduced deformation parameters. Isospin dependent soft-rotator coupled-channels optical model analysis.

doi: 10.1103/PhysRevC.75.034616
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC1579.


2007OR02      Phys.Rev. C 75, 021001 (2007)

S.Oryu, S.Nishinohara, N.Shiiki, S.Chiba

Coulomb phase shift calculation in momentum space

NUCLEAR REACTIONS 1H(p, X), E(cm) ≈ 0-200 MeV; calculated Coulomb phase shift.

doi: 10.1103/PhysRevC.75.021001
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2007QU04      Phys.Rev. C 76, 057602 (2007)

J.M.Quesada, R.Capote, E.Sh.Soukhovitskii, S.Chiba

Approximate Lane consistency of the dispersive coupled-channels potential for actinides

NUCLEAR REACTIONS 238U, 232Th(p, n), E=26 MeV; calculated angular distributions, compared with experimental data.

doi: 10.1103/PhysRevC.76.057602
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2007SU08      Prog.Part.Nucl.Phys. 59, 486 (2007)

T.Suzuki, S.Chiba, Ta.Yoshida, K.Higashiyama, M.Honma, T.Kajino, T.Otsuka

Advances in shell-model calculations and neutrino-induced reactions

NUCLEAR REACTIONS 12C(ν, ν'), (ν, e), (ν, ν'p), (ν, ν'n), 56Fe(ν, e), 58.60,62,64Ni(ν, e), E not given; calculated supernova neutrino induced cross sections using new shell model hamiltonian.

doi: 10.1016/j.ppnp.2007.01.013
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2006EN01      Prog.Theor.Phys.(Kyoto) 115, 337 (2006)

T.Endo, T.Maruyama, S.Chiba, T.Tatsumi

Charge Screening Effect in the Hadron-Quark Mixed Phase

doi: 10.1143/PTP.115.337
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2006HA51      Phys.Rev.C 74, 065802 (2006)

T.Hayakawa, S.Miyamoto, Y.Hayashi, K.Kawase, K.Horikawa, S.Chiba, K.Nakanishi, H.Hashimoto, T.Ohta, M.Kando, T.Mochizuki, T.Kajino, M.Fujiwara

Half-life of 184Re populated by the (γ, n) reaction from laser Compton scattering γ rays at the electron storage ring NewSUBARU

RADIOACTIVITY 184,184mRe(EC), (β+) [from 185Re(γ, n)]; measured Eγ, Iγ, T1/2. 184W deduced transitions.

NUCLEAR REACTIONS 185Re(γ, n), E ≈ 2-20 MeV; measured β-delayed Eγ, Iγ; deduced isomer yield ratio.

doi: 10.1103/PhysRevC.74.065802
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2006KA15      J.Nucl.Sci.Technol.(Tokyo) 43, 1 (2006)

T.Kawano, S.Chiba, H.Koura

Phenomenological Nuclear Level Densities using the KTUY05 Nuclear Mass Formula for Applications Off-Stability

NUCLEAR STRUCTURE 28Si, 56Fe, 93Nb, 132Sn, 139La, 158Gd, 204Os, 209Bi; calculated level densities. Phenomenological model.

doi: 10.1080/18811248.2006.9711062
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2006MA19      Phys.Rev. C 73, 035802 (2006)

T.Maruyama, T.Tatsumi, D.N.Voskresensky, T.Tanigawa, T.Endo, S.Chiba

Finite size effects on kaonic "pasta" structures

doi: 10.1103/PhysRevC.73.035802
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2006MA40      Phys.Rev. C 74, 014315 (2006)

T.Maruyama, S.Chiba

Nuclear electromagnetic current in the relativistic approach with the momentum-dependent self-energies

doi: 10.1103/PhysRevC.74.014315
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2006SU15      Phys.Rev. C 74, 034307 (2006)

T.Suzuki, S.Chiba, T.Yoshida, T.Kajino, T.Otsuka

Neutrino-nucleus reactions based on new shell model Hamiltonians

NUCLEAR REACTIONS 12C(ν, ν'), (ν, e), E=spectrum; calculated σ for decay-at-rest neutrinos. 4He, 12C(ν, ν'), (ν, e), E=spectrum; 12C(ν, ν'n), (ν, ν'p), (ν, ν'α), E=spectrum; calculated σ, branching ratios for supernova neutrinos. Shell model, implications for isotope production in supernovae discussed.

doi: 10.1103/PhysRevC.74.034307
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2005AK05      Nucl.Phys. A749, 329c (2005)

Y.Akimura, T.Maruyama, N.Yoshinaga, S.Chiba

Stability and structure of quark matter in a molecular dynamics framework

doi: 10.1016/j.nuclphysa.2004.12.062
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2005AK11      Eur.Phys.J. A 25, 405 (2005)

Y.Akimura, T.Maruyama, N.Yoshinaga, S.Chiba

Molecular dynamics simulation for the baryon-quark phase transition at finite baryon density

doi: 10.1140/epja/i2005-10143-x
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2005CA56      Phys.Rev. C 72, 064610 (2005)

R.Capote, E.Sh.Soukhovitskii, J.M.Quesada, S.Chiba

Is a global coupled-channel dispersive optical model potential for actinides feasible?

NUCLEAR REACTIONS 232Th, 238U(n, X), (p, X), E=0.001-200 MeV; analyzed data; deduced parameters. Dispersive coupled-channels optical model.

doi: 10.1103/PhysRevC.72.064610
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2005EN02      Nucl.Phys. A749, 333c (2005)

T.Endo, T.Maruyama, S.Chiba, T.Tatsumi

Numerical study of the hadron-quark mixed phase

doi: 10.1016/j.nuclphysa.2004.12.063
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2005HA60      Astrophys.J. 628, 533 (2005)

T.Hayakawa, T.Shizuma, T.Kajino, S.Chiba, N.Shinohara, T.Nakagawa, T.Arima

New s-Process Path and Its Implications for a 187Re-187Os Nucleo-Cosmochronometer

NUCLEAR REACTIONS 185Re(n, γ), E=thermal; measured isomer yield ratio. Activation technique, astrophysical implications discussed.

doi: 10.1086/430198
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset22777.


2005MA15      Nucl.Phys. A749, 186c (2005)

T.Maruyama, T.Tatsumi, D.N.Voskresensky, T.Tanigawa, S.Chiba

Structured mixed phase at charged kaon condensation

doi: 10.1016/j.nuclphysa.2004.12.031
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2005MA56      Phys.Rev. C 72, 015802 (2005)

T.Maruyama, T.Tatsumi, D.N.Voskresensky, T.Tanigawa, S.Chiba

Nuclear "pasta" structures and the charge screening effect

doi: 10.1103/PhysRevC.72.015802
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