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Journal Articles

Role of higher-order effects in spin-misalignment small-angle neutron scattering of high-pressure torsion nickel

Oba, Yojiro; Bersweiler, M.*; Titov, I.*; Adachi, Nozomu*; Todaka, Yoshikazu*; Gilbert, E. P.*; Steinke, N.-J.*; Metlov, K. L.*; Michels, A.*

Physical Review Materials (Internet), 5(8), p.084410_1 - 084410_9, 2021/08

 Times Cited Count:0 Percentile:0(Materials Science, Multidisciplinary)

Journal Articles

Revealing defect-induced spin disorder in nanocrystalline Ni

Bersweiler, M.*; Sinaga, E. P.*; Peral, I.*; Adachi, Nozomu*; Bender, P.*; Steinke, N.-J.*; Gilbert, E. P.*; Todaka, Yoshikazu*; Michels, A.*; Oba, Yojiro

Physical Review Materials (Internet), 5(4), p.044409_1 - 044409_7, 2021/04

 Times Cited Count:1 Percentile:69.4(Materials Science, Multidisciplinary)

Journal Articles

Anomalous magnetic anisotropy and magnetic nanostructure in pure Fe induced by high-pressure torsion straining

Oba, Yojiro; Adachi, Nozomu*; Todaka, Yoshikazu*; Gilbert, E. P.*; Mamiya, Hiroaki*

Physical Review Research (Internet), 2(3), p.033473_1 - 033473_6, 2020/11

Journal Articles

The Joint evaluated fission and fusion nuclear data library, JEFF-3.3

Plompen, A. J. M.*; Cabellos, O.*; De Saint Jean, C.*; Fleming, M.*; Algora, A.*; Angelone, M.*; Archier, P.*; Bauge, E.*; Bersillon, O.*; Blokhin, A.*; et al.

European Physical Journal A, 56(7), p.181_1 - 181_108, 2020/07

 Times Cited Count:73 Percentile:99.41(Physics, Nuclear)

The Joint Evaluated Fission and Fusion nuclear data library 3.3 is described. New evaluations for neutron-induced interactions with the major actinides $$^{235}$$U, $$^{238}$$U and $$^{239}$$Pu, on $$^{241}$$Am and $$^{23}$$Na, $$^{59}$$Ni, Cr, Cu, Zr, Cd, Hf, W, Au, Pb and Bi are presented. It includes new fission yileds, prompt fission neutron spectra and average number of neutrons per fission. In addition, new data for radioactive decay, thermal neutron scattering, gamma-ray emission, neutron activation, delayed neutrons and displacement damage are presented. JEFF-3.3 was complemented by files from the TENDL project. The libraries for photon, proton, deuteron, triton, helion and alpha-particle induced reactions are from TENDL-2017. The demands for uncertainty quantification in modeling led to many new covariance data. A comparison between results from model calculations using the JEFF-3.3 library and those from benchmark experiments for criticality, delayed neutron yields, shielding and decay heat, reveals that JEFF-3.3 is excellent for a wide range of nuclear technology applications, in particular nuclear energy.

Journal Articles

Energy-resolved small-angle neutron scattering from steel

Oba, Yojiro*; Morooka, Satoshi; Oishi, Kazuki*; Suzuki, Junichi*; Takata, Shinichi; Sato, Nobuhiro*; Inoue, Rintaro*; Tsuchiyama, Toshihiro*; Gilbert, E. P.*; Sugiyama, Masaaki*

Journal of Applied Crystallography, 50(2), p.334 - 339, 2017/04

 Times Cited Count:2 Percentile:26.99(Chemistry, Multidisciplinary)

Journal Articles

Characterization of microstructure using Bragg edge and energy-resolved small-angle neutron scattering

Oba, Yojiro; Morooka, Satoshi; Oishi, Kazuki*; Suzuki, Junichi*; Tsuchiyama, Toshihiro*; Gilbert, E. P.*

Proceedings of 5th International Symposium on Steel Science (ISSS 2017), p.151 - 154, 2017/00

Small-angle neutron scattering and neutron diffraction are powerful tools to characterize microstructures in steels. Several new experimental techniques such as Bragg edge transmission analysis and energy-resolved small-angle neuron scattering have been recently developed with the opening of new-generation pulsed neutron sources. In this talk, the combined use of these diffraction and small-angle scattering techniques are discussed for the total characterization of the microstructures in steels.

Journal Articles

Magnetic scattering in the simultaneous measurement of small-angle neutron scattering and Bragg edge transmission from steel

Oba, Yojiro*; Morooka, Satoshi; Oishi, Kazuki*; Sato, Nobuhiro*; Inoue, Rintaro*; Adachi, Nozomu*; Suzuki, Junichi*; Tsuchiyama, Toshihiro*; Gilbert, E. P.*; Sugiyama, Masaaki*

Journal of Applied Crystallography, 49(5), p.1659 - 1664, 2016/10

 Times Cited Count:9 Percentile:63.8(Chemistry, Multidisciplinary)

Oral presentation

Plastic deformation behavior of harder and/or softer dispersion second phase containing of steels

Morooka, Satoshi; Oba, Yojiro*; Tsuchiyama, Toshihiro*; Akama, Daichi*; Gilbert, E. P.*

no journal, , 

no abstracts in English

Oral presentation

Characterization of microstructure in steel using simultaneous measurement of neutron diffraction, small-angle neutron scattering, and neutron transmission

Oba, Yojiro; Morooka, Satoshi; Oishi, Kazuki*; Suzuki, Junichi*; Tsuchiyama, Toshihiro*; Gilbert, E. P.*

no journal, , 

Since microstructures of steels are closely related to their mechanical properties, the characterization of the microstructures is important. Neutron scattering techniques are useful for the characterization of the steel and widely utilized. On the other hand, recent development of the neutron transmission analysis enables the characterization of the microstructure using the neutron transmission similar to the conventional neutron scattering measurements. The possibilities of advanced experiments using neutron scattering and transmission measurements are discussed for the characterization of the microstructure.

Oral presentation

Revealing defect-induced spin disorder in nanocrystalline Ni

Bersweiler, M.*; Sinaga, E. P.*; Peral, I.*; Adachi, Nozomu*; Bender, P.*; Steinke, N.-J.*; Gilbert, E. P.*; Todaka, Yoshikazu*; Oba, Yojiro; Michels, A.*

no journal, , 

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