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NSR database version of April 11, 2024.

Search: Author = M.Ohta

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2024AM03      Phys.Rev. C 109, 034603 (2024)

Sh.Amano, Y.Aritomo, M.Ohta

Effects of neck and nuclear orientations on the mass drift in heavy ion collisions

doi: 10.1103/PhysRevC.109.034603
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2024SC02      Nucl.Data Sheets 193, 1 (2024)

G.Schnabel, D.L.Aldama, T.Bohm, U.Fischer, S.Kunieda, A.Trkov, C.Konno, R.Capote, A.J.Koning, S.Breidokaite, T.Eade, M.Fabbri, D.Flammini, L.Isolan, I.Kodeli, M.Kostal, S.Kwon, D.Laghi, D.Leichtle, S.Nakayama, M.Ohta, L.W.Packer, Y.Qiu, S.Sato, M.Sawan, M.Schulc, G.Stankunas, M.Sumini, A.Valentine, R.Villari, A.Zohar

FENDL: A library for fusion research and applications

NUCLEAR REACTIONS 1,2,3H, 3,4He, 6,7Li, 9Be, 10,11B, 12,13C, 14,15N, 16,17,18O, 19F, 20,21,22Ne, 23Na, 24,25,26Mg, 27Al, 28,29,30Si, 31P, 32,33,34S, 36S, 35,37Cl, 36,38,40Ar, 39,40,41K, 40Ca, 42,43,44Ca, 46,48Ca, 45Sc, 46,47,48,49,50Ti, 50,51V, 50Cr, 52,53,54Cr, 55Mn, 54Fe, 56,57,58Fe, 59Co, 58Ni, 60,61,62Ni, 64Ni, 63,65Cu, 64Zn, 66,67,68Zn, 70Zn, 69,71Ga, 70Ge, 72,73,74Ge, 76Ge, 79,81Br, 89Y, 90,91,92,93,94Zr, 96Zr, 93Nb, 92Mo, 94,95,96,97,98Mo, 100Mo, 103Rh, 107,109Ag, 106,108,110Cd, 111,112,113,114Cd, 116Cd, 112Sn, 114,115,116,117,118,119,120Sn, 122,124Sn, 121,123Sb, 127I, 133Cs, 130,132,134Ba, 135,136,137,138Ba, 138,139La, 136,138,140,142Ce, 144Sm, 147,148,149,150Sm, 154Sm, 152Gd, 154,155,156,157,158Gd, 160Gd, 162,164,166,168,170Er, 167Er, 175,176Lu, 174,176,178,180Hf, 177,179Hf, 180,181Ta, 182,184,186W, 183W, 185,187Re, 190,192,194,196,198Pt, 195Pt, 197Au, 204,206,208Pb, 207Pb, 209Bi, 232Th, 234,235U, 238U(n, X), 1,2,3H, 3He, 6,7Li, 9Be, 10,11B, 12,13C, 14,15N, 16,17,18O, 19F, 23Na, 24,25,26Mg, 27Al, 28,29,30Si, 31P, 32,33,34S, 36S, 35,37Cl, 36,38,40Ar, 39,40,41K, 40Ca, 42,43,44Ca, 46,48Ca, 45Sc, 46,47,48,49,50Ti, 50,51V, 50Cr, 52,53,54Cr, 55Mn, 54Fe, 58Fe, 59Co, 58Ni, 60,61,62Ni, 64Ni, 63,65Cu, 64Zn, 66,67,68Zn, 70Zn, 69,71Ga, 70Ge, 72,73,74Ge, 76Ge, 79,81Br, 89Y, 90,91,92,93,94Zr, 96Zr, 93Nb, 92Mo, 94,95,96,97,98Mo, 100Mo, 103Rh, 107,109Ag, 106,108Cd, 110,111,112,113,114Cd, 116Cd, 112Sn, 114,115,116,117,118,119,120Sn, 122,124Sn, 121,123Sb, 127I, 133Cs, 130,132,134,136,138Ba, 135,137Ba, 138,139La, 136,138,140,142Ce, 152,153,154,155,156,157,158,159,160Gd, 155,157Gd, 162,164,166,168,170Er, 167Er, 175,176Lu, 174,176,178,180Hf, 177,178,179Hf, 181Ta, 180,182,184,186W, 183W, 185,187Re, 190,192,194,196,198Pt, 195Pt, 197Au, 204,206,208Pb, 207Pb, 209Bi, 232Th, 235U, 238U(p, X), E<3000 MeV; analyzed ENDF/B-VII.0, ENDF/B-VII.1, ENDF/B-VIII.0, INDEN-1.0, JENDL-4, JENDL/HE-2007, JEFF-3.1.1, FENDL-3.2 , TENDL-2010, TENDL-2011, TENDL-2014, TENDL-2015, TENDL-2019 libraries data; deduced recommended σ data coordinated by the International Atomic Energy Agency (IAEA) Nuclear Data Section (NDS).

doi: 10.1016/j.nds.2024.01.001
Citations: PlumX Metrics


2023AM04      Phys.Rev. C 108, 014612 (2023)

S.Amano, Y.Aritomo, M.Ohta

Dynamical mechanism of fusion hindrance in heavy ion collisions

NUCLEAR REACTIONS 208Pb(48Ca, X), E(cm)=180 MeV; calculated fusion probabilities in collision process, one-dimensional fusion barrier dependence on initial angular momentum, mass distribution of fission fragments, trajectory distribution and time evolution. Investigated fusion hindrance caused by the formation of the neck. Concluded that the fusion hindrance comes from the formation of the inner barrier due to the early denecking process. Dynamical model based on multidimensional Langevin equations.

doi: 10.1103/PhysRevC.108.014612
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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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2022AM06      Phys.Rev. C 106, 024610 (2022)

S.Amano, Y.Aritomo, M.Ohta

Modes of massive nucleon transfer appearing in quasifission processes for collisions of superheavy nuclei

NUCLEAR REACTIONS 249Bk(48Ca, X), E(cm)=213.05 MeV; calculated potential energy surfaces, fission fragments total kinetic energy distribution, trajectory distribution and time evolution, distribution of the deformation of fragments at scission point. Revealed existence of two quasifission modes arising from the different neck relaxation modes. Multidimensional dynamical model of nucleus-nucleus collisions based on the Langevin equations.

doi: 10.1103/PhysRevC.106.024610
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2022AR04      Phys.Rev. C 105, 034604 (2022)

Y.Aritomo, A.Iwamoto, K.Nishio, M.Ohta

Fission mechanism inferred from nuclear shape fluctuation by the Langevin equation

NUCLEAR STRUCTURE 246,264Fm; calculated friction tensors and their eigenvalues in the ground states, first, and second saddles, Langevin trajectory contours, total kinetic energies (TKE) of fission fragments. 246,248,250,252,254,256,258,260,262,264Fm; calculated mass distribution of fission fragments (FFMD) at excitation energies of E*=7 MeV for the fermium isotopes; deduced trend for FFMD from mass-asymmetric to mass-symmetric distribution towards the heavier Fm isotopes. Langevin equations in the nuclear deformation space. Comparison with available experimental data.

doi: 10.1103/PhysRevC.105.034604
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2022KW01      Ann.Nucl.Energy 169, 108932 (2022)

S.Kwon, C.Konno, M.Ohta, S.Sato

Problems on neutron production data of Be-9 in TENDL-2017 and -2019 deuteron sub-libraries

NUCLEAR REACTIONS 9Be(d, n), E=5, 20 MeV; analyzed available data; deduced inconsistent ENDF format type files in TENDL-2017 and TENDL-2019, discrepancies, good results for JENDL/DEU-2020.

doi: 10.1016/j.anucene.2021.108932
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2020AR11      Phys.Atomic Nuclei 83, 545 (2020)

Y.Aritomo, S.Amano, M.Okubayashi, B.Yanagi, K.Nishio, M.Ohta

Estimation of Synthesizing New Superheavy Elements Using Dynamical Model

NUCLEAR REACTIONS 208Pb(70Zn, X)278Cn, 250Pu(48Ca, X)298Fl, E not given; analyzed available data. 298,300,304Fl; deduced survival probabilities using the dynamical and statistical models.

doi: 10.1134/S1063778820040043
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2020TR01      Nucl.Data Sheets 163, 1 (2020)

A.Trkov, P.J.Griffin, S.P.Simakov, L.R.Greenwood, K.I.Zolotarev, R.Capote, D.L.Aldama, V.Chechev, C.Destouches, A.C.Kahler, C.Konno, M.Kostal, M.Majerle, E.Malambu, M.Ohta, V.G.Pronyaev, V.Radulovic, S.Sato, M.Schulc, E.Simeckova, I.Vavtar, J.Wagemans, M.White, H.Yashima

IRDFF-II: A New Neutron Metrology Library

doi: 10.1016/j.nds.2019.12.001
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2014HA26      Nucl.Data Sheets 119, 61 (2014)

H.Harada, M.Ohta, A.Kimura, K.Furutaka, K.Hirose, K.Y.Hara, T.Kin, F.Kitatani, M.Koizumi, S.Nakamura, M.Oshima, Y.Toh, M.Igashira, T.Katabuchi, M.Mizumoto, K.Kino, Y.Kiyanagi, T.Fujii, S.Fukutani, J.Hori, K.Takamiya

Capture Cross-section Measurement of 241Am(n, γ) at J-PARC/MLF/ANNRI

NUCLEAR REACTIONS 241Am(n, γ), E=0.01-10 eV; measured Eγ, Iγ using spectrometers with BGO anticompton in ANNRI with ToF; deduced σ. Compared with JENDL-4.0 and other libraries.

doi: 10.1016/j.nds.2014.08.019
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset23172.


2014NA26      Nucl.Data Sheets 119, 143 (2014)

S.Nakamura, A.Kimura, F.Kitatani, M.Ohta, K.Furutaka, S.Goko, K.Y.Hara, H.Harada, K.Hirose, T.Kin, M.Koizumi, M.Oshima, Y.Toh, K.Kino, F.Hiraga, T.Kamiyama, Y.Kiyanagi, T.Katabuchi, M.Mizumoto, M.Igashira, J.Hori, T.Fujii, S.Fukutani, K.Takamiya

Cross Section Measurements of the Radioactive 107Pd and Stable 105, 108Pd Nuclei at J-PARC/MLF/ANNRI

NUCLEAR REACTIONS 107Pd(n, γ), E=0.015-50 eV[target with significant admixtures of other Pg isotopes]; measured Eγ, Iγ, γγ-coin using 4π Ge spectrometer with ToF method at ANNRI; deduced prompt γ-ray spectrum, γ transitions, deduced levels, J, π, σ. 105,108Pd deduced resonances, fitted by SAMMY code; deduced resonance paratemeters. Cross sections compared with JENDL-4.0.

doi: 10.1016/j.nds.2014.08.040
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset23140.


2013XU14      Nucl.Phys. A918, 61 (2013)

Y.Xu, K.Takahashi, S.Goriely, M.Arnould, M.Ohta, H.Utsunomiya

NACRE II: an update of the NACRE compilation of charged-particle-induced thermonuclear reaction rates for nuclei with mass number A ≤ 16

COMPILATION 2,3H, 3He, 6,7Li, 7,9Be, 10,11B, 12,13C, 13,14,15N(p, X), (α, X), E≈0.1 keV-1 MeV;2,3H, 3He(d, X), E≈0.1 keV-1 MeV;3He(3He, 2p), E≈0.1 keV-1 MeV; compiled, evaluated Q-value, σ, S-factor, reaction rates using DWBA, potential models; deduced model parameters.

doi: 10.1016/j.nuclphysa.2013.09.007
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2012WA31      Phys.Rev. C 86, 044305 (2012)

H.X.Wang, Y.H.Zhang, X.H.Zhou, M.L.Liu, B.Ding, G.S.Li, W.Hua, H.B.Zhou, S.Guo, Y.H.Qiang, M.Oshima, M.Koizumi, Y.Toh, A.Kimura, H.Harada, K.Furutaka, F.Kitatani, S.Nakamura, Y.Hatsukawa, M.Ohta, K.Hara, T.Kin, J.Meng

Rotational band properties of 173W

NUCLEAR REACTIONS 150Nd(28Si, 5n), E=135, 140 MeV; measured Eγ, Iγ, γγ-coin, γγ(θ)(ADO) at JAEA facility. 173W; deduced levels, J, π, rotational bands, multipolarity, B(M1)/B(E2), signature splittings, alignments, decoupling parameter, configurations.

doi: 10.1103/PhysRevC.86.044305
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Data from this article have been entered in the XUNDL database. For more information, click here.


2011HA53      J.Korean Phys.Soc. 59, 1547s (2011)

H.Harada, S.Goko, A.Kimura, M.Ohta, M.Oshima, F.Kitatani, Y.Toh, K.Furutaka, T.Kin, M.Koizumi, S.Nakamura, M.Igashira, T.Katabuchi, M.Mizumoto, T.Ohsaki, J.Hori, T.Fujii, K.Takamiya, J.Goto, Y.Kiyanagi, K.Kino, M.Furusaka, F.Hiraga, T.Kamiyama

Study of Neutron Capture Reactions Using the 4π Ge Spectrometer

NUCLEAR REACTIONS Ag(n, γ), E not given;U(e, γ), E not given; measured Eγ, Iγ; deduced energy-sum spectrum. 241Am(n, γ), E=0.1-200 MeV; measured Eγ, Iγ; deduced σ, yield curve. 4π Ge spectrometer in the resonance region with TOF technique.

doi: 10.3938/jkps.59.1547
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2011HO20      J.Korean Phys.Soc. 59, 1777s (2011)

J.Hori, K.Furutaka, S.Goko, H.Harada, A.Kimura, T.Kin, F.Kitatani, M.Koizumi, S.Nakamura, M.Ohta, M.Oshima, Y.Toh, M.Igashira, T.Katabuchi, M.Mizumoto, T.Kamiyama, K.Kino, Y.Kiyanagi

Measurement of Neutron Capture Gamma Rays from the Resonances of 91Zr and 96Zr at the J-PARC/MLF/ANNRI

NUCLEAR REACTIONS 91,96Zr(n, γ), E=20-1000 eV; measured neutron TOF with Eγ, Iγ from specified resonances using 4π Ge Spectrometer at J-PARC/MLF/ANNRI.

doi: 10.3938/jkps.59.1777
Citations: PlumX Metrics


2011KI36      J.Korean Phys.Soc. 59, 1769s (2011)

T.Kin, K.Furutaka, S.Goko, H.Harada, A.Kimura, F.Kitatani, S.Nakamura, M.Ohta, M.Oshima, Y.Toh, J.Hori, M.Igashira, T.Katabuchi, M.Koizumi, M.Mizumoto, T.Kamiyama, K.Kino, Y.Kiyanagi

The "4π Ge Spectrometer" for Measurements of Neutron Capture Cross Sections by the TOF Method at the J-PARC/MLF/ANNRI

doi: 10.3938/jkps.59.1769
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2011KI37      J.Korean Phys.Soc. 59, 1781s (2011)

Y.Kiyanagi, K.Kino, M.Furusaka, F.Hiraga, T.Kamiyama, K.Kato, M.Igashira, T.Katabuchi, M.Mizumoto, M.Oshima, H.Harada, J.Katakura, K.Furutaka, S.Goko, A.Kimura, T.Kin, F.Kitatani, M.Koizumi, S.Nakamura, M.Ohta, Y.Toh, T.Ohtsuki, K.Hirose, T.Fujii, J.Hori, K.Takamiya, S.Fukutani, M.Shibata, K.Yamada, H.Utsunomiya

The 'Study on Nuclear Data by Using a High Intensity Pulsed Neutron Source for Advanced Nuclear System' Nuclear Data Project and the Characteristics of the Neutron Beam Line for the Capture Cross Section Experiments at J-PARC

doi: 10.3938/jkps.59.1781
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2011KI38      J.Korean Phys.Soc. 59, 1828s (2011)

A.Kimura, K.Furutaka, S.Goko, H.Harada, T.Kin, F.Kitatani, M.Koizumi, S.Nakamura, M.Ohta, M.Oshima, Y.Toh, T.Fujii, S.Fukutani, J.Hori, K.Takamiya, M.Igashira, T.Katabuchi, M.Mizumoto, T.Kamiyama, K.Kino, Y.Kuyanagi

Measurements of Neutron-Capture Cross Sections of 244Cm and 246Cm at J-PARC/MLF/ANNRI

NUCLEAR REACTIONS 244,246Cm(n, γ), E=1.0-300 eV; measured Eγ, Iγ, γγ-coin; deduced γ spectra, γ spectra gated via resonance, yields, σ.

doi: 10.3938/jkps.59.1828
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset23141.


2011NA36      J.Korean Phys.Soc. 59, 1773s (2011)

S.Nakamura, K.Furutaka, S.Goko, H.Harada, A.Kimura, T.Kin, F.Kitatani, M.Koizumi, M.Ohta, M.Oshima, Y.Toh, J.Hori, T.Fujii, S.Fukutani, K.Takamiya, M.Igashira, T.Katabuchi, M.Mizumoto, T.Kamiyama, K.Kino, Y.Kiyanagi

Measurements of Neutron-Capture Cross Sections of Palladium Isotopes at the J-PARC/MLF/ANNRI

NUCLEAR REACTIONS 105,106,107,108Pd(n, γ), E=0.1-200 eV; measured Eγ, Iγ, TOF spectra of Pd. 105,107Pd deduced σ. Compared with JENDL-3.3.

doi: 10.3938/jkps.59.1773
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 dataset23140.


2011YA15      J.Korean Phys.Soc. 59, 907s (2011)

K.Yamamoto, H.Masui, M.Ohta, K.Kato

Particle Capture Reaction using Extended Core Plus Valence Nucleon Model

NUCLEAR REACTIONS 17O(n, γ), E=0-0.5 MeV; calculated σ using COSM (Cluster Orbital Shell Model).

NUCLEAR STRUCTURE 18O; calculated levels, J, π using COSM (Cluster Orbital Shell Model) and CSM (Complex Scaling Method). Comparison with data.

doi: 10.3938/jkps.59.907
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2010GO24      J.Nucl.Sci.Technol.(Tokyo) 47, 1097 (2010)

S.Goko, A.Kimura, H.Harada, M.Oshima, M.Ohta, K.Furutaka, T.Kin, F.Kitatani, M.Koizumi, S.Nakamura, Y.Toh, M.Igashira, T.Katabuchi, M.Mizumoto, Y.Kiyanagi, K.Kino, M.Furusaka, F.Hiraga, T.Kamiyama, J.-i.Hori, T.Fujii, S.Fukutani, K.Takamiya

Measurement of Neutron Capture Cross Section Ratios of 244Cm Resonances Using NNRI

NUCLEAR REACTIONS 244Cm(n, γ), E<200 eV; measured neutron time of flight, Eγ, Iγ; deduced the neutron capture σ ratios of 244Cm resonances.

doi: 10.3327/jnst.47.1097
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset23141.


2010YA08      Prog.Theor.Phys.(Kyoto) 123, 1029 (2010)

K.Yamamoto, K.Kato, T.Wada, M.Ohta

Effect of Uncertainties in Nuclear Reaction Rate on Nucleosynthesis Paths

NUCLEAR REACTIONS 17O(n, γ), E<1 MeV; analyzed network calculations; deduced reaction rates, σ, stellar abundances and nucleosynthesis path.

doi: 10.1143/PTP.123.1029
Citations: PlumX Metrics


2009OH05      Int.J.Mod.Phys. E18, 2003 (2009)

M.Ohta

On the tours symposium on nuclear physics

doi: 10.1142/S0218301309014160
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2009YA03      Prog.Theor.Phys.(Kyoto) 121, 375 (2009)

K.Yamamoto, H.Masui, J.Kato, T.Wada, M.Ohta

Radiative Capture Cross Section for 16O(n, γ)17O and 16O(p, γ)17F below Astrophysical Energies

NUCLEAR REACTIONS 16O(n, γ), E(cm) < 10 MeV; calculated cross sections.16O(p, γ), E(cm) < 3 MeV; calculated astrophysical S-factor.

doi: 10.1143/PTP.121.375
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2008YA05      Phys.Rev. C 77, 021303 (2008)

T.Yamagata, H.Akimune, S.Nakayama, Y.Banshou, M.Fujiwara, K.Fushimi, M.B.Greenfield, K.Hara, K.Y.Hara, H.Hashimoto, H.Ikemizu, K.Kawase, M.Kinoshita, K.Nakanishi, M.Ohta, M.Sakama, M.Tanaka, H.Utsunomiya, N.Warashina, M.Yosoi

Evidence for charged-particle decay of dipole-excited 4H clusters embedded in 6He and 7He

NUCLEAR REACTIONS 6,7Li(7Li, 7Be), E=455 MeV; measured charged particle spectra, (particle)(particle)-coin, branching ratios. 6,7He; measured decay channels, dipole resonances for charged particle decay.

doi: 10.1103/PhysRevC.77.021303
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2007NA33      J.Nucl.Sci.Technol.(Tokyo) 44, 1500 (2007)

S.Nakamura, M.Ohta, H.Harada, T.Fujii, H.Yamana

Thermal-Neutron Capture Cross Section and Resonance Integral of Americium-241

NUCLEAR REACTIONS 241Am(n, γ), E=thermal; measured decay Eα, Iα, cross section and resonance integral for thermal neutron capture leading to ground state using the activation method.

doi: 10.3327/jnst.44.1500
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset22998.


2007OH07      J.Nucl.Sci.Technol.(Tokyo) 44, 1491 (2007)

M.Ohta, S.Nakamura

Simple Estimation of Fission Yields with Selective Channel Scission Model

NUCLEAR REACTIONS 233,236,238U, 237Np, 240,242Pu(n, F), E=thermal, 1 MeV; calculated fission yields and mass distributions using the selective scission model. Deduced fission barriers.

RADIOACTIVITY 241,243Am(SF); calculated fission yields and mass distributions using the selective scission model. Deduced fission barriers.

doi: 10.3327/jnst.44.1491
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2006AR03      Nucl.Phys. A764, 149 (2006)

Y.Aritomo, M.Ohta

Origin of the drastic decrease of fusion probability in superheavy mass region

NUCLEAR STRUCTURE 224Th, 232Pu, 240Cf, 256No, 267Sg, 280Ds, 292Fl, 297Og; calculated potential energy surface. Fluctuation-dissipation model.

NUCLEAR REACTIONS 208Pb(Ar, X), (Ca, X), (Ti, X), (Cr, X), (Fe, X), (Ni, X), (Zn, X), E not given; calculated fusion probability; deduced fusion-fission dynamics features. Fluctuation-dissipation model, comparison with data.

doi: 10.1016/j.nuclphysa.2005.09.008
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2006AR19      J.Phys.(London) G32, 2245 (2006)

Y.Aritomo, M.Ohta, F.Hanappe

Pre-scission neutron multiplicity associated with the dynamical process in the superheavy-mass region

NUCLEAR REACTIONS 208Pb, 244Pu(48Ca, F), E*=50 MeV; calculated prescission neutron multiplicities, fission fragment mass distributions. Fluctuation-dissipation dynamics.

doi: 10.1088/0954-3899/32/11/016
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2006HA53      J.Nucl.Sci.Technol.(Tokyo) 43, 1289 (2006)

H.Harada, S.Nakamura, M.Ohta, T.Fujii, H.Yamana

Emission Probabilities of Gamma Rays from the Decay of 233Pa and 238Np, and the Thermal Neutron Capture Cross Section of 237Np

RADIOACTIVITY 233Pa, 238Np(β-); measured Eγ, Iγ; deduced γ-ray emission probabilities.

NUCLEAR REACTIONS 237Np(n, γ), E=thermal; analyzed decay data; deduced thermal capture σ.

doi: 10.1080/18811248.2006.9711223
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset22977.


2006NA06      Int.J.Mod.Phys. E15, 311 (2006)

A.K.Nasirov, Y.Aritomo, A.Fukushima, M.Ohta, T.Wada, G.Giardina, G.Mandaglio, A.Muminov, R.K.Utamuratov

Role of the nuclear shell structure and orientation angles of deformed reactants in complete fusion

NUCLEAR REACTIONS 238U(16O, X), E=80-160 MeV; 154Sm(60Ni, X), E=240-330 MeV; calculated fusion and evaporation residue σ; deduced shell structure and orientation effects. Dinuclear system concept, Langevin calculations, comparison with data.

doi: 10.1142/S0218301306004144
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2006OH06      J.Nucl.Sci.Technol.(Tokyo) 43, 1441 (2006)

M.Ohta, S.Nakamura, H.Harada, T.Fujii, H.Yamana

Measurement of Effective Capture Cross Section of Americium-243 for Thermal Neutrons

NUCLEAR REACTIONS 243Am(n, γ), E=thermal; measured effective capture σ. Activation technique, comparison with previous results.

doi: 10.1080/18811248.2006.9711239
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 dataset22967.


2006UT01      Phys.Rev. C 74, 025806 (2006)

H.Utsunomiya, A.Makinaga, S.Goko, T.Kaihori, H.Akimune, T.Yamagata, M.Ohta, H.Toyokawa, S.Muller, Y.-W.Lui, S.Goriely

Photoneutron cross section measurements on the N = 82 nuclei 139La and 141Pr: Implications for p-process nucleosynthesis

NUCLEAR REACTIONS 139La, 141Pr(γ, n), E=9.1-14.0 MeV; measured σ. Comparison with previous results and model predictions. Astrophysical implications discussed.

doi: 10.1103/PhysRevC.74.025806
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2005AR08      Nucl.Phys. A753, 152 (2005)

Y.Aritomo, M.Ohta

Trajectory analysis for fusion path in superheavy-mass region

NUCLEAR REACTIONS 208Pb, 244Pu(48Ca, X), E*=40, 50, 60 MeV; calculated fusion-fission trajectory in deformation space, time evolution features. 244Pu(48Ca, X), E*=40, 50, 60 MeV; calculated fission fragment mass distributions. Fluctuation-dissipation model.

doi: 10.1016/j.nuclphysa.2005.02.122
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2005AR22      Nucl.Phys. A759, 309 (2005)

Y.Aritomo, M.Ohta, T.Materna, F.Hanappe, O.Dorvaux, L.Stuttge

Analysis of fusion-fission dynamics by pre-scission neutron emission in 58Ni + 208Pb system

NUCLEAR REACTIONS 208Pb(58Ni, X), E*=185.9 MeV; analyzed pre-scission neutron multiplicity and fusion-fission trajectory in deformation space. Fluctuation-dissipation model.

doi: 10.1016/j.nuclphysa.2005.05.155
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2005SH37      Phys.Rev. C 72, 025808 (2005)

T.Shizuma, H.Utsunomiya, P.Mohr, T.Hayakawa, S.Goko, A.Makinaga, H.Akimune, T.Yamagata, M.Ohta, H.Ohgaki, Y.-W.Lui, H.Toyokawa, A.Uritani, S.Goriely

Photodisintegration cross section measurements on 186W, 187Re, and 188Os: Implications for the Re-Os cosmochronology

NUCLEAR REACTIONS 186W, 187Re, 188Os(γ, n), E=7.3-10.9 MeV; measured σ. 185W, 186Re, 187Os(n, γ), E < 100 keV; calculated capture σ. Astrophysical implications discussed.

doi: 10.1103/PhysRevC.72.025808
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetM0676.


2005YA12      Phys.Rev. C 71, 064316 (2005)

T.Yamagata, H.Akimune, S.Nakayama, M.Fujiwara, K.Fushimi, M.B.Greenfield, K.Hara, K.Y.Hara, H.Hashimoto, K.Ichihara, K.Kawase, M.Kinoshita, Y.Matsui, K.Nakanishi, M.Ohta, A.Shiokawa, M.Tanaka, H.Utsunomiya, M.Yosoi

Di-trinucleon cluster resonances in A = 6 isobar nuclei

NUCLEAR REACTIONS 6Li(3He, t3He), E=450 MeV; 6Li(7Li, t7Be), E=455 MeV; measured particle spectra, angular correlations. 6He, 6Li, 6Be deduced resonances.

doi: 10.1103/PhysRevC.71.064316
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2004AR06      Int.J.Mod.Phys. E13, 301 (2004)

Y.Aritomo, M.Ohta, T.Materna, F.Hanappe, L.Stuttge

Dynamical calculation for fusion-fission process in superheavy mass region

NUCLEAR REACTIONS 208Pb(58Ni, X), E*=189.5 MeV; calculated pre-scission neutron multiplicities, quasi-fission and fusion-fission components.

doi: 10.1142/S0218301304002089
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2004AR10      Nucl.Phys. A734, 180 (2004)

Y.Aritomo, M.Ohta, T.Materna, F.Hanappe, L.Stuttge

Dynamics of fusion-fission process with neutron evaporation in superheavy mass region

NUCLEAR REACTIONS 208Pb(58Ni, X), E*=186 MeV; calculated pre-scission neutron multiplicity, fission trajectory features.

doi: 10.1016/j.nuclphysa.2004.01.029
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2004AR16      Nucl.Phys. A738, 221 (2004)

Y.Aritomo, M.Ohta, T.Materna, F.Hanappe, L.Stuttge

Analysis of fusion-fission dynamics in superheavy mass region by pre-scission neutron multiplicities

NUCLEAR STRUCTURE 292Fl; calculated potential energy surface; deduced decay paths. Fluctuation-dissipation model.

NUCLEAR REACTIONS 208Pb(58Ni, X), E*=189.5 MeV; 208Pb, 244Pu(48Ca, X), E*=40 MeV; analyzed pre-scission neutron multiplicities, fission fragment mass distributions; deduced fusion-fission dynamics features. Fluctuation-dissipation model.

doi: 10.1016/j.nuclphysa.2004.04.035
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2004AR20      Prog.Theor.Phys.(Kyoto), Suppl. 154, 449 (2004)

Y.Aritomo, M.Ohta, T.Materna, F.Hanappe, L.Stuttge

Problems of Dynamical Calculation for Synthesis of Superheavy Elements

NUCLEAR REACTIONS 208Pb, 244Pu(48Ca, X), E* ≈ 35 MeV; calculated potential energy surfaces, fusion-fission σ, fission fragment mass distributions, pre-scission neutron multiplicities. Dynamical approach, sensitivity to parameters discussed.

doi: 10.1143/PTPS.154.449
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2004AR24      Acta Phys.Hung.N.S. 19, 85 (2004)

Y.Aritomo, M.Ohta

Analysis of Fusion-Fission Process with Neutron Evaporation in Superheavy Mass Region

doi: 10.1556/APH.19.2004.1-2.12
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2004AR25      Nucl.Phys. A744, 3 (2004)

Y.Aritomo, M.Ohta

Dynamical calculation for fusion-fission probability in superheavy mass region, where mass symmetric fission events originate

NUCLEAR REACTIONS 208Pb, 244Pu(48Ca, X), E* ≈ 25-50 MeV; calculated potential energy surfaces, fusion-fission σ, fission fragment mass distributions; deduced reaction mechanism features. Dynamical approach.

doi: 10.1016/j.nuclphysa.2004.08.009
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2004AS07      Prog.Theor.Phys.(Kyoto), Suppl. 154, 457 (2004)

T.Asano, T.Wada, M.Ohta, T.Ichikawa, S.Yamaji, H.Nakahara

Dynamical Calculation of Multi-Modal Nuclear Fission of Fermium Isotopes

NUCLEAR STRUCTURE 256Fm; calculated fission fragment total kinetic energy and mass distributions, excitation energy dependence. Dynamical calculation.

doi: 10.1143/PTPS.154.457
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2004AS14      J.Nucl.Radiochem.Sci. 5, No 1, 1 (2004)

T.Asano, T.Wada, M.Ohta, T.Ichikawa, S.Yamaji, H.Nakahara

Dynamical Calculation of Multi-Modal Nuclear Fission of Fermium Nuclei

NUCLEAR STRUCTURE 256,258,264Fm; calculated fission fragments kinetic energy and mass distributions. Multi-modal fission model.


2004MA16      Int.J.Mod.Phys. E13, 285 (2004)

T.Materna, V.Bouchat, V.Kinnard, F.Hanappe, O.Dorvaux, C.Schmitt, L.Stuttge, K.Siwek-Wilczynska, Y.Aritomo, A.Bogatchev, E.Prokhorova, M.Ohta

Tracking dissipation in capture reactions

NUCLEAR REACTIONS 98Mo(28Si, X), E=204 MeV; 208Pb(58Ni, X), E*=186 MeV; 232Th(40Ca, X), E*=166 MeV; calculated pre- and post-scission neutron multiplicities, dissipation effects. Backtracing technique.

doi: 10.1142/S0218301304002065
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2004MA69      Prog.Theor.Phys.(Kyoto), Suppl. 154, 442 (2004)

T.Materna, F.Hanappe, Y.Aritomo, L.Stuttge, O.Dorvaux, C.Schmitt, M.Ohta

Tracking Dissipation in Capture Reactions

NUCLEAR REACTIONS 98Mo(28Si, X), E=204 MeV; 232Th(40Ca, X), E*=166 MeV; 208Pb(58Ni, X), E*=186 MeV; analyzed pre- and post-scission neutron multiplicities; deduced dissipation effects. Backtracing procedure.

doi: 10.1143/PTPS.154.442
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2004OG13      Hyperfine Interactions 159, 235 (2004)

M.Ogura, T.Nagatomo, K.Minamisomo, K.Matsuta, T.Minamisono, Y.Nakashima, C.D.P.Levy, T.Sumikama, M.Mihara, H.Fujiwara, S.Kumashiro, M.Fukuda, J.A.Behr, K.P.Jackson, S.Momota, Y.Nojiri, T.Ohtsubo, M.Ohta, A.Kitagawa, M.Kanazawa, M.Torikoshi, S.Sato, M.Suda, J.R.Alonso, G.F.Krebs, T.M.Symons

Quadrupole Moments of Na Isotopes

NUCLEAR MOMENTS 20,21,25Na; measured electric quadrupole coupling constants; deduced the ratio of Q ratio 20Na/21Na and 25Na/21Na. β-NMR technique.

doi: 10.1007/s10751-005-9105-4
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2004OH12      Acta Phys.Hung.N.S. 19, 61 (2004)

M.Ohta, Y.Aritomo, K.Hashizume

On Evaporation Residue Cross Sections Producing Nuclei with Z = 104-120

doi: 10.1556/APH.19.2004.1-2.9
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2004UT01      Nucl.Phys. A738, 136 (2004)

H.Utsunomiya, K.Y.Hara, S.Goko, H.Akimune, T.Yamagata, M.Ohta, H.Ohgaki, H.Toyokawa, T.Hayakawa, T.Shizuma, P.Mohr, Y.-W.Lui, H.Ohkuma, H.Yonehara, K.Soutome, M.Arnould

Photonuclear reaction studies at synchrotron radiation facilities in Japan

doi: 10.1016/j.nuclphysa.2004.04.022
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2003AK03      Phys.Rev. C 67, 051302 (2003)

H.Akimune, T.Yamagata, S.Nakayama, Y.Arimoto, M.Fujiwara, K.Fushimi, K.Hara, M.Ohta, A.Shiokawa, M.Tanaka, H.Utsunomiya, K.Y.Hara, H.P.Yoshida, M.Yosoi

Di-triton molecular structure in 6He

NUCLEAR REACTIONS 6Li(7Li, 7Be), (7Li, t7Be), E=65 MeV/nucleon; measured particle spectra. 6He deduced resonance energy, width, binary triton decay branching ratio.

doi: 10.1103/PhysRevC.67.051302
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2003AR10      Yad.Fiz. 66, 1141 (2003); Phys.Atomic Nuclei 66, 1105 (2003)

Y.Aritomo, M.Ohta

Analysis of Fusion-Fission Process with Neutron Evaporation in Superheavy Mass Region

NUCLEAR REACTIONS 208Pb(48Ca, X), (52Cr, X), (64Ni, X), E*=32-101 MeV; 244Pu(48Ca, X), E*=37 MeV; calculated fission fragment mass distributions, kinetic energies. 244Pu, 249Cf(48Ca, xn), E*=20-50 MeV; calculated σ. 244Pu(48Ca, X), E*=33 MeV; calculated prescission neutron multiplicity. Fluctuation-dissipation dynamics.

doi: 10.1134/1.1586423
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2003HA55      Phys.Rev. D 68, 072001 (2003)

K.Y.Hara, H.Utsunomiya, S.Goko, H.Akimune, T.Yamagata, M.Ohta, H.Toyokawa, K.Kudo, A.Uritani, Y.Shibata, Y.-W.Lui, H.Ohgaki

Photodisintegration of deuterium and Big Bang nucleosynthesis

NUCLEAR REACTIONS 2H(γ, n), E=2.3-4.5 MeV; measured products, En, In; deduced σ, σ(E). Data were imported from EXFOR entry M0668.

doi: 10.1103/PhysRevD.68.072001
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2003OH02      Yad.Fiz. 66, 1062 (2003); Phys.Atomic Nuclei 66, 1026 (2003)

M.Ohta, Y.Aritomo

An Idea for Predicting the Evaporation Residue Cross Section in Superheavy Mass Region

NUCLEAR REACTIONS 238U, 244Pu, 243Am, 248Cm, 249Bk, 248,249Cf(18O, xn), (19F, xn), (22Ne, xn), (23Na, xn), (26Mg, xn), (27Al, xn), (30Si, xn), (31P, xn), (34S, xn), (37Cl, xn), (40Ar, xn), (41K, xn), (48Ca, xn), (45Sc, xn), (50Ti, xn), (50V, xn), (54Cr, xn), (55Mn, xn), (58Fe, xn), E* ≈ 35 MeV; 248,249,250,251,252Cf(48Ca, xn), E* ≈ 30 MeV; calculated evaporation residue formation σ. Phenomenological approach, comparisons with data.

doi: 10.1134/1.1586414
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2003UT01      Phys.Rev. C 67, 015807 (2003)

H.Utsunomiya, H.Akimune, S.Goko, M.Ohta, H.Ueda, T.Yamagata, K.Yamasaki, H.Ohgaki, H.Toyokawa, Y.-W.Lui, T.Hayakawa, T.Shizuma, E.Khan, S.Goriely

Cross section measurements of the 181Ta(γ, n)180Ta reaction near neutron threshold and the p-process nucleosynthesis

NUCLEAR REACTIONS 181Ta(γ, n), E ≈ 7.8-12 MeV; measured σ; calculated astrophysical reaction rates.

doi: 10.1103/PhysRevC.67.015807
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2003UT02      Nucl.Phys. A718, 199c (2003)

H.Utsunomiya, H.Akimune, S.Goko, T.Hayakawa, Y.-W.Lui, H.Ohgaki, M.Ohta, T.Shizuma, H.Toyokawa, T.Yamagata

A new astrophysical γ probe and its applications

NUCLEAR REACTIONS 181Ta(γ, n), E ≈ 7.8-12.5 MeV; 9Be(γ, n), E ≈ 1.5-4.5 MeV; measured photoneutron σ. 9Be deduced resonance parameters. Comparison with previous results and model predictions.

doi: 10.1016/S0375-9474(03)00715-2
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2002IC03      J.Nucl.Radiochem.Sci. 3, No 1, 67 (2002)

T.Ichikawa, T.Asano, T.Wada, M.Ohta

Dynamics of Fission Modes Studied with the 3-dimensional Langevin Equation

NUCLEAR STRUCTURE 270Sg; calculated fission modes deformations, shell correction energy, fragments kinetic energy and mass distributions.


2002ZA01      Phys.Rev. C65, 014607 (2002)

V.I.Zagrebaev, Y.Aritomo, M.G.Itkis, Yu.Ts.Oganessian, M.Ohta

Synthesis of Superheavy Nuclei: How accurately can we describe it and calculate the cross sections ?

NUCLEAR REACTIONS 208Pb(16O, xn), E*=14-45 MeV; 236U(12C, xn), E*=26-65 MeV; 172Yb, 206,208Pb, 244Pu(48Ca, xn), E*=12-60 MeV; 136Xe(86Kr, xn), E*=15-60 MeV; 124Sn(92Zr, xn), (96Zr, xn), E*=10-60 MeV; calculated, analyzed fusion and evaporation residue σ. Implications for synthesis of superheavy elements discussed.

doi: 10.1103/PhysRevC.65.014607
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2001IC02      Prog.Theor.Phys.(Kyoto) 105, 915 (2001)

T.Ichikawa, T.Wada, M.Ohta

Fission Width of Compound Nuclei Calculated Using the Mean First Passage Time Method

NUCLEAR STRUCTURE 238U; calculated fission width vs angular momentum. Mean first passage time method.

NUCLEAR REACTIONS 100Mo, 110Pd(100Mo, X), 110Pd(110Pd, X), E(cm)=170-290 MeV; calculated fission barrier, evaporation residue σ. Mean first passage time method.

doi: 10.1143/PTP.105.915
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2001TO07      Phys.Rev. C63, 035801 (2001)

Y.Tokimoto, H.Utsunomiya, T.Yamagata, M.Ohta, Y.-W.Lui, R.P.Schmitt, S.Typel, Y.Aoki, K.Ieki, K.Katori

Coulomb Breakup of 7Li for Nuclear Astrophysics

NUCLEAR REACTIONS 27Al, 58Ni, 64Zn, 90Zr, 120Sn, 144Sm, 169Tm, 197Au, 208Pb(7Li, tα), E=42 MeV; measured triton, α spectra, σ(θ) following resonant and nonresonant Coulomb breakup; deduced postacceleration effect. 3H(α, γ), E(cm) ≈ 0.05-0.8 MeV; deduced astrophysical S factors.

doi: 10.1103/PhysRevC.63.035801
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2001UT01      Phys.Rev. C63, 018801 (2001)

H.Utsunomiya, Y.Yonezawa, H.Akimune, T.Yamagata, M.Ohta, M.Fujishiro, H.Toyokawa, H.Ohgaki

Photodisintegration of 9Be with Laser-Induced Compton Backscattered γ Rays

NUCLEAR REACTIONS 9Be(γ, n), E=1.78-6.11 MeV; measured photoneutron σ(E); deduced nαα reaction rate. 9Be deduced resonance widths, energies, B(E1). Comparison with compiled results.

doi: 10.1103/PhysRevC.63.018801
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetK2003.


2001UT03      Nucl.Phys. A688, 340c (2001)

H.Utsunomiya, Y.Yonezawa, H.Akimune, T.Yamagata, M.Ohta, H.Toyokawa, H.Ohgaki, K.Sumiyoshi

Photodisintegration of 9Be and the Reaction Rate for α(αn, γ)9Be

NUCLEAR REACTIONS 9Be(γ, n), E=1.5-6 MeV; measured En, Eγ, σ; deduced reaction rate for 4He(αn, γ) reaction. Comparison with compilations.

doi: 10.1016/S0375-9474(01)00723-0
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1999AR04      Phys.Rev. C59, 796 (1999)

Y.Aritomo, T.Wada, M.Ohta, Y.Abe

Fluctuation-Dissipation Model for Synthesis of Superheavy Elements

NUCLEAR STRUCTURE 268No, 276Rf, 282Sg, 286Hs, 292Ds, 294Cn, 298Fl, 302Lv; calculated fission potential energy curves, evaporation residue cross sections vs excitation energy, fission barrier height. Fluctuation-dissipation model.

doi: 10.1103/PhysRevC.59.796
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1999KO58      Nuovo Cim. 112A, 1431 (1999)

H.Kozima, M.Ohta, M.Fujii, K.Arai, H.Kudoh, K.Kaki

Analysis of Energy Spectrum of Neutrons in Cold-Fusion Experiments by the TNCF Model

NUCLEAR REACTIONS 2H(d, n), E=low; analyzed neutron spectra. Trapped neutron catalyzed fusion.


1999OH10      Acta Phys.Hung.N.S. 10, 253 (1999)

M.Ohta, K.Okazaki, T.Wada, Y.Aritomo, Y.Abe

Favorable Combination for the Synthesis of Superheavy Elements

NUCLEAR REACTIONS 223At(75Cu, X), 231Ra(67Fe, X), 238Pa(60V, X), 246Pu(52Ca, X), 253Bk(45Cl, X), 217At(73Cu, X), 224Ra(66Fe, X), 232Pa(58V, X), 239Pu(51Ca, X), 247Bk(43Cl, X), E*=25-50 MeV; calculated compound nucleus formation probability, evaporation residue σ.


1999TO12      Prog.Theor.Phys.(Kyoto) 101, 607 (1999)

T.Tokuda, T.Wada, M.Ohta

Fusion Cross Section of Massive Nuclei by Fluctuation-Dissipation Dynamics

NUCLEAR REACTIONS 100Mo, 110Pd(100Mo, X), 110Pd(110Pd, X), E(cm)=200-280 MeV; calculated fusion σ; deduced fusion hindrance features. Fluctuation-dissipation dynamics.

doi: 10.1143/PTP.101.607
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1999UT03      Nucl.Phys. (Supplement) A654, 928c (1999)

H.Utsunomiya, Y.Tokimoto, T.Yamagata, M.Ohta, Y.Aoki, K.Hirota, K.Ieki, Y.Iwata, K.Katori, S.Hamada, Y.-W.Lui, R.P.Schmitt, S.Typel, G.Baur

Excitation of Continuum States in 7Li and Their Decay by Quantum Tunneling

NUCLEAR REACTIONS 27Al, 58Ni, 64Zn, 90Zr, 120Sn, 144Sm, 197Au(7Li, tα), E=42 MeV; measured particle spectra, forward-backward asymmetry; deduced E1, E2, higher-order effects in Coulomb breakup.

doi: 10.1016/S0375-9474(00)88575-9
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1999WA28      Nucl.Phys. (Supplement) A654, 888c (1999)

T.Wada, Y.Aritomo, T.Tokuda, K.Okazaki, M.Ohta, Y.Abe

Multi-Dimensional Fluctuation-Dissipation Dynamics of the Synthesis of Superheavy Elements

NUCLEAR REACTIONS 149La(149La, X), E*=10-50 MeV; calculated evaporation residue excitation function. Fluctuation-dissipation dynamics, mass asymmetric channels also discussed.

doi: 10.1016/S0375-9474(00)88566-8
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1998UT01      Phys.Lett. 416B, 43 (1998)

H.Utsunomiya, Y.Tokimoto, H.Mabuchi, K.Osada, T.Yamagata, M.Ohta, Y.Aoki, K.Hirota, K.Ieki, Y.Iwata, K.Katori, S.Hamada, Y.-W.Lui, R.P.Schmitt

Strongly-Suppressed Post-Coulomb Acceleration in Non-Resonant Breakup of 7Li

NUCLEAR REACTIONS 27Al, 58Ni, 90Zr, 120Sn, 144Sm, 197Au(7Li, tα), E=42 MeV; measured tα-coin, σ(θ, Et, Eα); deduced no evidence for fragment post-acceleration. Non-resonant breakup, Coulomb dissociation, astrophysical implications.

doi: 10.1016/S0370-2693(97)01328-2
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1998UT03      Nucl.Instrum.Methods Phys.Res. A402, 417 (1998)

H.Utsunomiya, Y.Tokimoto, K.Osada, T.Yamagata, M.Ohta, Y.Aoki, K.Hirota, K.Ieki, Y.Iwata, K.Katori, S.Hamada, Y.-W.Lui, R.P.Schmitt

Method of Coulomb Breakup Probing Primordial 7Li Synthesis

NUCLEAR REACTIONS 90Zr(7Li, tα), E=42 MeV; measured t-, α-spectra, tα-coin; deduced astrophysical S-factors. Comparison with direct capture data.

doi: 10.1016/S0168-9002(97)00883-8
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1998UT04      J.Phys.(London) G24, 1637 (1998)

H.Utsunomiya, Y.Tokimoto, K.Osada, T.Yamagata, M.Ohta, Y.Aoki, K.Hirota, K.Ieki, Y.Iwata, K.Katori, S.Hamada, Y.-W.Lui, R.P.Schmitt

Astrophysical Implications of Non-Resonant Break-Up of 7Li

NUCLEAR REACTIONS 90Zr, 197Au(7Li, tα), E not given; analyzed nonresonant breakup data; deduced role of post-Coulomb acceleration.

doi: 10.1088/0954-3899/24/8/044
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1997AB38      J.Phys.(London) G23, 1275 (1997)

Y.Abe, Y.Aritomo, T.Wada, M.Ohta

A New Mechanism for Synthesis of Superheavy Elements

NUCLEAR STRUCTURE 298Fl; calculated potential vs collective degree of freedom, time, shell-correction energy vs temperature, other superheavy residue production related features.

doi: 10.1088/0954-3899/23/10/015
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1997AR06      Phys.Rev. C55, R1011 (1997)

Y.Aritomo, T.Wada, M.Ohta, Y.Abe

Diffusion Mechanism for Synthesis of Superheavy Elements

NUCLEAR REACTIONS 149La(149La, X), E not given; calculated evaporation residue σ vs excitation. Smoluchowski equation, finite-range droplet model potential; temperature dependent shell correction energy, superheavy elements.

doi: 10.1103/PhysRevC.55.R1011
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1997OK02      Phys.Lett. 393B, 301 (1997)

D.O'Kelly, T.Botting, B.Hurst, R.P.Schmitt, Y.-W.Lui, Y.Hirabayashi, S.Okabe, Y.Sakuragi, H.Utsunomiya, T.Yamagata, M.Ohta

Breakup of 30 MeV/u-16O in Nuclear and Coulomb Fields of 120Sn and 208Pb Nuclei

NUCLEAR REACTIONS 120Sn, 208Pb(16O, α12C), E=30 MeV/nucleon; measured α12C-coin, σ(θ, θ(α12C)); deduced nuclear, Coulomb-breakup interference role. Coupled channels approach, orthogonality condition model.

doi: 10.1016/S0370-2693(96)01636-X
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1997WA08      Nucl.Phys. A616, 446c (1997)

T.Wada, Y.Aritomo, T.Tokuda, M.Ohta, Y.Abe

Dynamics of the Superheavy Element Synthesis with a Diffusion Model

NUCLEAR REACTIONS 145La(145La, X), 147La(147La, X), 148La(148La, X), 149La(149La, X), E not given; calculated evaporation residue σ vs initial excitation energy for 290114, 294114, 296114, 298114 compound nuclei, formation, survival probabilities; deduced isotope dependence, superheavy element synthesis dynamics related features. Diffusion model.

doi: 10.1016/S0375-9474(97)00116-4
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1995HA42      Appl.Radiat.Isot. 46, 425 (1995)

A.Hakim, A.Fahli, M.Ohta, G.Guillaume, J.P.Coffin, P.Fintz, F.Jundt, A.Malki, F.Rami, B.Rastegar, P.Wagner, M.Zahar

Prompt and Delayed Charged-Particle Emissions in Low Impact Parameter Collision of 40Ar(1100 MeV) and 24Mg

NUCLEAR REACTIONS, ICPND 24Mg(40Ar, X), E=1100 MeV; measured σ(θ(light charged particle), θ(fragment), E), d-, t-, p-, α-yield ratios. Two-moving source model analysis.

doi: 10.1016/0969-8043(95)00036-4
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1994HA54      Nuovo Cim. 107A, 1587 (1994)

A.Hakim, A.Fahli, M.Ohta, G.Guillaume, J.P.Coffin, P.Fintz, J.Jundt, A.Malki, F.Rami, B.Rastegar, P.Wagner, M.Zahar

Prompt and Thermal Light-Charged-Particle Emissions in the Central 40Ar(1100 MeV) + 24Mg Reactions

NUCLEAR REACTIONS 24Mg(40Ar, X), E=1100 MeV; measured (light charged particle)(evaporation residue)-coin; deduced thermal, preequilibrium emission regions separation, model parameters. 64Zn deduced energy, temperature.

doi: 10.1007/BF02780693
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1991MA30      Z.Phys. A339, 283 (1991)

A.Malki, J.P.Coffin, G.Guillaume, F.Jundt, K.Krishan, F.Rami, P.Wagner, P.Fintz, M.Zahar, M.Gonin, B.Heusch, M.Ohta, B.Rastegar, F.Merchez, J.Mistretta, S.Kox

Preequilibrium Versus Thermalized Light-Charged Particle Emissions in the 40Ar(1100 MeV) + 24Mg Reaction. Dynamical Calculations

NUCLEAR REACTIONS 24Mg(40Ar, X), E=1100 MeV; measured fragment yield, (fragment)(fragment)(θ); deduced light particle emission processes separation. Light-heavy fragment coincidence, p, d, t, α particle detected.

doi: 10.1007/BF01284066
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1986OH06      Radiat.Eff. 95, 187 (1986)

T.Ohsawa, K.Fujino, M.Ohta, K.Kudo

A Method of Analysis of Neutron Inelastic Scattering by Heavy Nuclei and Its Application to Cross Section Evaluation for Th-232

NUCLEAR REACTIONS 232Th(n, n'), E=threshold-2.5 MeV; calculated, evaluated σ(E). Coupled-channels, Hauser-Feshbach models.

doi: 10.1080/00337578608208692
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1984OH02      Phys.Rev. C29, 1948 (1984)

M.Ohta, K.Hatogai, S.Okai, Y.Abe

Limitation on Heavy Ion Fusion and Nuclear Level Density at High Excitation Energies

NUCLEAR STRUCTURE 56Fe, 46Ti; calculated state, level density vs excitation. Partition function method, shell model saddle point equation solution.

NUCLEAR REACTIONS, ICPND 26Mg(20Ne, X), E(cm) ≈ 30-100 MeV; calculated fusion σ(E), critical angular momentum, temperature. Compound nuclear level density, finite single particle space.

doi: 10.1103/PhysRevC.29.1948
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1984OH09      J.Nucl.Sci.Technol.(Tokyo) 21, 887 (1984)

T.Ohsawa, Y.Shigemitsu, M.Ohta, K.Kudo

Systematic Analysis of Fission Cross Sections of Actinides by Means of Double-Humped Barrier Model

NUCLEAR REACTIONS 231Pa, 232,234,235,236,238U, 237Np, 238,239,240,241,242,244Pu, 241,242,243Am, 243,244,245,246,247,248Cm, 249Bk, 252Cf(n, F), E ≈ 0.5-6 MeV; calculated σ(E); deduced optical model parameters. 232Pa, 233,235,236,237,239U, 238Np, 239,240,241,242,243,245Pu, 242,243,244Am, 244,245,246,247,248,249Cm, 250Bk, 253Cf deduced fission barriers. Double-humped barrier model.

doi: 10.1080/18811248.1984.9731132
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1982HA56      Prog.Theor.Phys.(Kyoto) 68, 2014 (1982)

K.Hatogai, M.Ohta, S.Okai

Optical Model Analysis for Fusion Excitation Functions and Elastic Scatterings

NUCLEAR REACTIONS 12C(12C, X), E(cm) > 3 MeV; 16O, 14N(12C, X), E(cm)=6 MeV; 16O(16O, X), E(cm) ≈ 10-50 MeV; 24Mg, 27Al(16O, X), E(cm) > 11 MeV; analyzed σ(fusion) vs E; 14N(12C, 12C), E(cm)=9.92-40.6 MeV; 40Ca(16O, 16O), E(cm)=35.7-55.6 MeV; analyzed σ(θ); deduced optical model parameters. Optical model analysis.

doi: 10.1143/PTP.68.2014
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1981OK01      Prog.Theor.Phys.(Kyoto) 65, 763 (1981)

S.Okai, M.Ohta, Y.Oyama

Fusion Cross Section in Terms of the Nuclear Optical Model Potential

NUCLEAR REACTIONS 14N(12C, X), E(cm)=6-100 MeV; 40Ca(16O, X), E(cm)=28-200 MeV; calculated σ(fusion, E). Optical model, short-range imaginary component.

doi: 10.1143/PTP.65.763
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1980OH05      Prog.Theor.Phys.(Kyoto) 63, 881 (1980)

M.Ohta, S.Okai

On an Ambiguous Part of Heavy-Ion Interaction

NUCLEAR REACTIONS 16O(16O, 16O), E(cm)=15-90 MeV; 20Ne(12C, 12C), E(cm)=15-40 MeV; 12C(12C, 12C), E(cm)=5-60 MeV; calculated σ(θ); 16O(20Ne, 20Ne), E=50 MeV; 12C(20Ne, 20Ne), E=65.7 MeV; 19F(16O, 16O), E=32 MeV; calculated σ(θ); deduced boundary condition parametrization of ambiguous part of heavy ion interaction. Optical model, incoming wave boundary condition.

doi: 10.1143/PTP.63.881
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1976OH03      Progr.Theor.Phys. 55, 1782 (1976)

M.Ohta

Double-Layer Model Analysis of Elastic Scattering of Complex Nuclei

NUCLEAR REACTIONS 18O(16O, 16O), E ≈ 24-60 MeV; 26Mg(16O, 16O), E ≈ 30-55 MeV; 16O(6Li, 6Li), E=29.8 MeV; 40Ca(6Li, 6Li), E=30 MeV; 19F(16O, 16O), E=32 MeV; 18O(19F, 19F), E=33 MeV; calculated σ(θ). Double-layer model analysis.

doi: 10.1143/PTP.55.1782
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1973MI29      Mem.Fac.Eng., Kyushu Univ. 33, No.2, 47 (1973)

K.Miyamoto, M.Ohta, T.Ohsawa

Calculation of Neutron Inelastic Scattering Cross Sections for 233Pa and 239Np

NUCLEAR REACTIONS 233Pa, 239Np(n, n'), E=.03-11 MeV; calculated σ(En', θ).


1973OH07      J.Nucl.Sci.Technol. 10, 583 (1973)

M.Ohta, K.Miyamoto

Calculation of Neutron Inelastic Scattering Cross Sections for Pa-233 and Np-239

NUCLEAR REACTIONS 233Pa, 239Np(n, X), E=0-10 MeV; calculated σ.

doi: 10.1080/18811248.1973.9735454
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