NSR Query Results
Output year order : Descending NSR database version of March 18, 2024. Search: Author = S.Okumura Found 26 matches. 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
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
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
2023KA11 Phys.Rev. C 107, 044608 (2023) T.Kawano, A.E.Lovell, S.Okumura, H.Sasaki, I.Stetcu, P.Talou Consideration of memory of spin and parity in the fissioning compound nucleus by applying the Hauser-Feshbach fission fragment decay model to photonuclear reactions NUCLEAR REACTIONS 238U(n, X), (γ, X), E<20 MeV; calculated partial population of compound nucleus. 235,238U, 239Pu(γ, F), E=1-20 MeV; calculated prompt fission γ-ray spectra, average number of prompt and delayed neutrons, total kinetic energies, cumulative fission product yields. Hauser-Feshbach statistical calculations of fission fragment decay with HF3D model. Comparison to experimental results and IAEA evaluation.
doi: 10.1103/PhysRevC.107.044608
2022OK02 J.Nucl.Sci.Technol.(Tokyo) 59, 96 (2022) S.Okumura, T.Kawano, A.E.Lovell, T.Yoshida Energy Dependent Calculations of Fission Product, Prompt, and Delayed Neutron Yields for Neutron Induced Fission on 235U, 238U, and 239Pu NUCLEAR REACTIONS 235,238U, 239Pu(n, F), E<5 MeV; calculated neutron multiplicity (nubar), cumulative fission product yield, delayed neutron yield. The Hauser-Feshbach Fission Fragment Decay (HF3D) model. Comparison with experimental data.
doi: 10.1080/00223131.2021.1954103
2021KA34 Phys.Rev. C 104, 014611 (2021) T.Kawano, S.Okumura, A.E.Lovell, I.Stetcu, P.Talou Influence of nonstatistical properties in nuclear structure on emission of prompt fission neutrons NUCLEAR REACTIONS 235U(n, F), E=thermal; calculated prompt fission E(n), I(n), individual contribution from each fission fragment to prompt fission neutron spectrum (PFNS) using Hauser-Feshbach fission-fragment decay (HF3D) model. Comparison with experimental data.
doi: 10.1103/PhysRevC.104.014611
2021LO02 Phys.Rev. C 103, 014615 (2021) A.E.Lovell, T.Kawano, S.Okumura, I.Stetcu, M.R.Mumpower, P.Talou Extension of the Hauser-Feshbach fission fragment decay model to multichance fission NUCLEAR REACTIONS 235U(n, F), E=0-20 MeV; calculated multichance fission probabilities, average excitation energy causing fission for first-, second-, third-, and fourth-chance fission, pre-neutron-emission mass yields, total kinetic energy (TKE) and average prompt neutron and γ-ray multiplicities as function of incident neutron energy, average neutron multiplicity as a function of fragment mass, prompt fission γ-ray spectrum, independent and cumulative fission mass yields, average number of delayed neutrons emitted in fission. Extended deterministic Hauser-Feshbach fission fragment decay model (HF3D) within the code BeoH to calculate prompt and delayed particle emission from fission fragments. Comparison with experimental data.
doi: 10.1103/PhysRevC.103.014615
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
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
2015SE13 Nucl.Instrum.Methods Phys.Res. B361, 685 (2015) S.Sekimoto, S.Okumura, H.Yashima, Y.Matsushi, H.Matsuzaki, H.Matsumura, A.Toyoda, K.Oishi, N.Matsuda, Y.Kasugai, Y.Sakamoto, H.Nakashima, D.Boehnlein, R.Coleman, G.Lauten, A.Leveling, N.Mokhov, E.Ramberg, A.Soha, K.Vaziri, K.Ninomiya, T.Omoto, T.Shima, N.Takahashi, A.Shinohara, M.W.Caffee, K.C.Welten, K.Nishiizumi, S.Shibata, T.Ohtsuki Measurements of production cross sections of 10Be and 26Al by 120 GeV and 392 MeV proton bombardment of 89Y, 159Tb, and natCu targets NUCLEAR REACTIONS 89Y, 159Tb, Cu(p, X)10Be, E=392 MeV; 89Y, Cu(p, X)10Be, E=120 GeV; Cu(p, X)26Al, E=392 MeV; 89Y, Cu(p, X)26Al, E=120 GeV; measured reaction products; deduced σ. Accelerator mass spectrometry, comparison with available data.
doi: 10.1016/j.nimb.2015.08.001
2012FR05 Phys.Rev. C 86, 034320 (2012) M.Freer, M.Itoh, T.Kawabata, H.Fujita, H.Akimune, Z.Buthelezi, J.Carter, R.W.Fearick, S.V.Fortsch, M.Fujiwara, U.Garg, N.Hashimoto, K.Kawase, S.Kishi, T.Murakami, K.Nakanishi, Y.Nakatsugawa, B.K.Nayak, R.Neveling, S.Okumura, S.M.Perez, P.Papka, H.Sakaguchi, Y.Sasamoto, F.D.Smit, J.A.Swartz, H.Takeda, S.Terashima, M.Uchida, I.Usman, Y.Yasuda, M.Yosoi, J.Zenihiro Consistent analysis of the 2+ excitation of the 12C Hoyle state populated in proton and α-particle inelastic scattering NUCLEAR REACTIONS 12C(p, p'), E=66 MeV; 12C(α, α'), E=386 MeV; measured 12C excitation spectra. 12C; deduced levels, 2+ excitation of the 0+ Hoyle state. R-matrix analysis. Discussed potential geometric arrangements of the cluster structures.
doi: 10.1103/PhysRevC.86.034320
2011IT08 Phys.Rev. C 84, 054308 (2011) M.Itoh, H.Akimune, M.Fujiwara, U.Garg, N.Hashimoto, T.Kawabata, K.Kawase, S.Kishi, T.Murakami, K.Nakanishi, Y.Nakatsugawa, B.K.Nayak, S.Okumura, H.Sakaguchi, H.Takeda, S.Terashima, M.Uchida, Y.Yasuda, M.Yosoi, J.Zenihiro Candidate for the 2+ excited Hoyle state at Ex ∼ 10 MeV in 12C NUCLEAR REACTIONS 12C(α, α'), E=386 MeV; measured E(α), I(α), σ(θ) of differential cross sections. Grand Raiden spectrometer. 12C; deduced levels, J, π, l-values, isoscalar strength distributions, widths, 2+ excitation of the Hoyle resonance and the α-condensate state. DWBA analysis of σ(θ) data.
doi: 10.1103/PhysRevC.84.054308
2010LI07 Phys.Rev. C 81, 034309 (2010) T.Li, U.Garg, Y.Liu, R.Marks, B.K.Nayak, P.V.Madhusudhana Rao, M.Fujiwara, H.Hashimoto, K.Nakanishi, S.Okumura, M.Yosoi, M.Ichikawa, M.Itoh, R.Matsuo, T.Terazono, M.Uchida, Y.Iwao, T.Kawabata, T.Murakami, H.Sakaguchi, S.Terashima, Y.Yasuda, J.Zenihiro, H.Akimune, K.Kawase, M.N.Harakeh Isoscalar giant resonances in the Sn nuclei and implications for the asymmetry term in the nuclear-matter incompressibility NUCLEAR REACTIONS 112,114,116,118,120,122,124Sn(α, α'), E=386 MeV; measured Eα, Iα, excitation energies, σ(θ), σ, angular distributions, differential cross section as function of excitation energy; deduced strengths distributions, widths and EWSR for isoscalar giant monopole resonance (ISGMR), isoscalar giant-dipole resonance (ISGDR), isoscalar giant quadrupole resonance (ISGQR), and high-energy octupole resonance (HEOR). Comparisons with theoretical predictions.
doi: 10.1103/PhysRevC.81.034309
2009HU13 Phys.Rev. C 80, 044317 (2009) M.Hunyadi, H.Hashimoto, T.Li, H.Akimune, H.Fujimura, M.Fujiwara, Z.Gacsi, U.Garg, K.Hara, M.N.Harakeh, J.Hoffman, M.Itoh, T.Murakami, K.Nakanishi, B.K.Nayak, S.Okumura, H.Sakaguchi, S.Terashima, M.Uchida, Y.Yasuda, M.Yosoi Proton decay from the isoscalar giant dipole resonance in 58Ni NUCLEAR REACTIONS 58Ni(α, α'p), E=386 MeV; measured Eα, Iα, αp-coin, σ, σ(θ), and width. 58Ni; deduced isoscalar giant dipole resonance (ISGDR), associated resonance parameters and branching ratios for proton decays to 57Co; analyzed EWSR. 57Co; deduced levels, J, π. Grand Raiden spectrometer at RCNP facility. Proton branching ratios compared with continuum-RPA calculations.
doi: 10.1103/PhysRevC.80.044317
2008ZE01 Phys.Rev. C 77, 024307 (2008) R.G.T.Zegers, E.F.Brown, H.Akimune, Sam M.Austin, A.M.van den Berg, B.A.Brown, D.A.Chamulak, Y.Fujita, M.Fujiwara, S.Gales, M.N.Harakeh, H.Hashimoto, R.Hayami, G.W.Hitt, M.Itoh, T.Kawabata, K.Kawase, M.Kinoshita, K.Nakanishi, S.Nakayama, S.Okumura, Y.Shimbara, M.Uchida, H.Ueno, T.Yamagata, M.Yosoi Gamow-Teller strength for the analog transitions to the first T = 1/2, Jπ = 3/2- states in 13C and 13N and the implications for type Ia supernovae NUCLEAR REACTIONS 13C(3He, t), E=420 MeV; measured charged particles, σ(θ); deduced B(GT), levels, J, π. 13C(p, n); deduced electron capture rates in stellar environments as a function of temperature.
doi: 10.1103/PhysRevC.77.024307
2007GA44 Nucl.Phys. A788, 36c (2007) U.Garg, T.Li, S.Okumura, H.Akimune, M.Fujiwara, M.N.Harakeh, H.Hashimoto, M.Itoh, Y.Iwao, T.Kawabata, K.Kawase, Y.Liu, R.Marks, T.Murakami, K.Nakanishi, K.Nayak, P.V.Madhusudhana Rao, H.Sakaguchi, Y.Terashima, M.Uchida, Y.Yasuda, M.Yosoi, J.Zenihiro The Giant Monopole Resonance in the Sn Isotopes: Why is Tin so "Fluffy"? NUCLEAR REACTIONS 112,114,116,118,120,122,124Sn(α, α'), E=400 MeV; measured Eα, Iα, σ(E, θ). 112,114,116,118,120,122,124Sn deduced GMR energy, strength distributions, moment ratios. Comparison with other data and calculations.
doi: 10.1016/j.nuclphysa.2007.01.046
2007LI61 Phys.Rev.Lett. 99, 162503 (2007) T.Li, U.Garg, Y.Liu, R.Marks, B.K.Nayak, P.V.Madhusudhana Rao, M.Fujiwara, H.Hashimoto, K.Kawase, K.Nakanishi, S.Okumura, M.Yosoi, M.Itoh, M.Ichikawa, R.Matsuo, T.Terazono, M.Uchida, T.Kawabata, H.Akimune, Y.Iwao, T.Murakami, H.Sakaguchi, S.Terashima, Y.Yasuda, J.Zenihiro, M.N.Harakeh Isotopic Dependence of the Giant Monopole Resonance in the Even-A 112-124Sn Isotopes and the Asymmetry Term in Nuclear Incompressibility NUCLEAR REACTIONS 112,114,116,118,120,122,124Sn(α, α'), E=400 MeV; measured Eα, Iα. Deduced GMR strength distributions.
doi: 10.1103/PhysRevLett.99.162503
2007ME25 Nucl.Instrum.Methods Phys.Res. B264, 221 (2007) R.Meharchand, H.Akimune, A.M.van den Berg, Y.Fujita, M.Fujiwara, S.Gales, M.N.Harakeh, H.Hashimoto, R.Hayami, G.W.Hitt, M.Itoh, T.Kawabata, K.Kawase, M.Kinoshita, K.Nakanishi, S.Nakayama, S.Okumura, Y.Shimbara, M.Uchida, T.Yamagata, M.Yosoi, R.G.T.Zegers Atomic charge-exchange between semi-relativistic (ν/c = 0.49) helium ions and targets from carbon to lead NUCLEAR REACTIONS C, Mg, Ni, Zr, Sn, Pb(3He, 3He), E=420 MeV; measured singly to doubly charged yield ratios. Compared results to model calculations.
doi: 10.1016/j.nimb.2007.08.078
2007ZE06 Phys.Rev.Lett. 99, 202501 (2007) R.G.Zegers, T.Adachi, H.Akimune, S.M.Austin, A.M.van den Berg, B.A.Brown, Y.Fujita, M.Fujiwara, S.Gales, C.J.Guess, M.N.Harakeh, H.Hashimoto, K.Hatanaka, R.Hayami, G.W.Hitt, M.E.Howard, M.Itoh, T.Kawabata, K.Kawase, M.Kinoshita, M.Matsubara, K.Nakanishi, S.Nakayama, S.Okumura, T.Ohta, Y.Sakemi, Y.Shimbara, Y.Shimizu, C.Scholl, C.Simenel, Y.Tameshige, A.Tamii, M.Uchida, T.Yamagata, M.Yosoi Extraction of Weak Transition Strengths via the (3He, t) Reaction at 420 MeV NUCLEAR REACTIONS 12,13C, 18O, 26Mg, 58Ni, 60Ni, 90Zr, 118Sn, 208Pb(3He, t), E=420 MeV; measured triton spectra and cross sections. Deduced B(GT).
doi: 10.1103/PhysRevLett.99.202501
2006YA06 Phys.Rev. C 74, 014309 (2006) T.Yamagata, N.Warashina, H.Akimune, S.Asaji, M.Fujiwara, M.B.Greenfield, H.Hashimoto, R.Hayami, T.Ishida, K.Kawase, M.Kinoshita, T.Kudoh, K.Nakanishi, S.Nakayama, S.Okumura, K.Sagara, M.Tanaka, H.Utsunomiya, M.Yosoi Excitation of dipole resonances in 4He and in the α clusters of 6Li and 7Li NUCLEAR REACTIONS 4He(p, p'), E=300 MeV; measured Ep, σ(E, θ). 6,7Li(p, p'), E=300 MeV; analyzed Ep, σ(E, θ). 4He, 6,7Li deduced dipole resonance energies, widths.
doi: 10.1103/PhysRevC.74.014309
2006ZE01 Phys.Rev. C 74, 024309 (2006) R.G.T.Zegers, H.Akimune, S.M.Austin, D.Bazin, A.M.van den Berg, G.P.A.Berg, B.A.Brown, J.Brown, A.L.Cole, I.Daito, Y.Fujita, M.Fujiwara, S.Gales, M.N.Harakeh, H.Hashimoto, R.Hayami, G.W.Hitt, M.E.Howard, M.Itoh, J.Janecke, T.Kawabata, K.Kawase, M.Kinoshita, T.Nakamura, K.Nakanishi, S.Nakayama, S.Okumura, W.A.Richter, D.A.Roberts, B.M.Sherrill, Y.Shimbara, M.Steiner, M.Uchida, H.Ueno, T.Yamagata, M.Yosoi The (t, 3He) and (3He, t) reactions as probes of Gamow-Teller strength NUCLEAR REACTIONS 26Mg(t, 3He), E=115 MeV/nucleon; 26Mg(3He, t), E=140 MeV/nucleon; measured σ(E, θ); deduced Gamow-Teller transition strengths. Comparison with model predictions.
doi: 10.1103/PhysRevC.74.024309
2004IT09 Nucl.Phys. A738, 268 (2004) M.Itoh, H.Akimune, M.Fujiwara, U.Garg, H.Hashimoto, T.Kawabata, K.Kawase, S.Kishi, T.Murakami, K.Nakanishi, Y.Nakatsugawa, B.K.Nayak, S.Okumura, H.Sakaguchi, H.Takeda, S.Terashima, M.Uchida, Y.Yasuda, M.Yosoi, J.Zenihiro Study of the cluster state at Ex=10.3 MeV in 12C NUCLEAR REACTIONS 12C(α, α'), E=386 MeV; measured Eα, σ(E, θ); deduced cluster state energy, J, π.
doi: 10.1016/j.nuclphysa.2004.04.044
2004YO06 Nucl.Phys. A738, 451 (2004) M.Yosoi, H.Akimune, I.Daito, H.Ejiri, H.Fujimura, M.Fujiwara, K.Fushimi, K.Hara, K.Y.Hara, H.Hashimoto, T.Ishikawa, M.Itoh, Y.Itow, S.Kishi, T.Kawabata, K.Kawase, M.Kinoshita, K.Kobayashi, M.Nakamura, K.Nakanishi, Y.Nakatsugawa, S.Nakayama, T.Noro, E.Obayashi, S.Okumura, H.Sakaguchi, Y.Sakemi, M.Shiozawa, H.Takeda, T.Taki, A.Tamii, M.Tanaka, S.Terashima, H.Toyokawa, N.Tsukahara, M.Uchida, T.Yamada, T.Yamagata, Y.Yasuda, H.P.Yoshida, R.G.T.Zegers, J.Zenihiro Cluster fragmentations of deep (1s)-hole states in light nuclei NUCLEAR REACTIONS 7Li, 12C, 16O(p, 2p), E=392 MeV; measured excitation energy spectra, decay fragment spectra from deep-hole states. 6He, 11B, 15N deduced cluster structure features.
doi: 10.1016/j.nuclphysa.2004.04.084
1992IE01 J.Phys.(London) G18, 401 (1992) K.Ieki, N.Iwasa, Y.Ando, K.Hata, T.Motobayashi, H.Murakami, M.Ogiwara, J.-Z.Ruan, S.Shibuya, S.Shirato, H.Fujiwara, S.C.Jeong, S.M.Lee, T.Mizota, Y.Nagashima, M.Ogihara, S.Okumura, Y.H.Pu, M.Ishihara Dynamics of the Projectile-Like Fragment Emission in the 40Ar + 209Bi Reaction at 26 MeV u-1 NUCLEAR REACTIONS 209Bi(40Ar, X), (40Ar, F), E=26 MeV/nucleon; measured fission, projectile-like (fragment)(fragment)(θ); deduced projectile-like fragment emission dynamics, angular momentum transfer, spin alignment, linear momentum transfer.
doi: 10.1088/0954-3899/18/2/020
1968YA02 J.Phys.Soc.Japan 24, 667 (1968) T.Yanabu, S.Yamashita, K.Hosono, S.Matsuki, T.Tanabe, K.Takimoto, Y.Okuma, K.Ogino, S.Okumura, R.Ishiwari Quasi-Free α-α Scattering in Be9 and C12 at 37 MeV NUCLEAR STRUCTURE 12C, 9Be; measured not abstracted; deduced nuclear properties.
doi: 10.1143/JPSJ.24.667
1967OK01 Nucl.Phys. A93, 74 (1967) Isomer Pair Cross Sections by 13.4-15.0 MeV Neutrons NUCLEAR REACTIONS 58Ni(n, p), 59Co(n, 2n), 75As(n, p), 76Ge(n, 2n), 79Br(n, 2n), 81Br(n, 2n), E = 13.39-14.96 MeV; measured σ. Natural targets.
doi: 10.1016/0375-9474(67)90172-8
Back to query form |