Refine your search:     
Report No.
 - 
Search Results: Records 1-20 displayed on this page of 1913

Presentation/Publication Type

Initialising ...

Refine

Journal/Book Title

Initialising ...

Meeting title

Initialising ...

First Author

Initialising ...

Keyword

Initialising ...

Language

Initialising ...

Publication Year

Initialising ...

Held year of conference

Initialising ...

Save select records

Journal Articles

Polarized and unpolarized neutron scattering for magnetic materials at the triple-axis spectrometer PONTA in JRR-3

Nakajima, Taro*; Saito, Hiraku*; Kobayashi, Naoki*; Kawasaki, Takuro; Nakamura, Tatsuya; Furukawa, Hazuki*; Asai, Shinichiro*; Masuda, Takatsugu*

Journal of the Physical Society of Japan, 93(9), p.091002_1 - 091002_5, 2024/09

JAEA Reports

Annual report of Department of Research Reactor and Tandem Accelerator, JFY2022 (Operation, Utilization and Technical Development of JRR-3, NSRR, Tandem Accelerator, Radio Isotope Production Facility and Tritium Process Laboratory, Decommissioning Activity for JRR-4)

Department of Research Reactor and Tandem Accelerator

JAEA-Review 2024-029, 107 Pages, 2024/08

JAEA-Review-2024-029.pdf:5.18MB

The Department of Research Reactor and Tandem Accelerator is in charge of the operation, utilization and technical development of JRR-3 (Japan Research Reactor No.3), NSRR (Nuclear Safety Research Reactor), Tandem Accelerator, Radio Isotope Production Facility, and TPL (Tritium Process Laboratory). Also decommissioned JRR-4 (Japan Research Reactor No.4) and maintains JRR-1 (Japan Research Reactor No.1) and the FEL (Free Electron Laser). This annual report describes the activities of our department in fiscal year of 2022. We carried out the operation and maintenance, utilization, upgrading of utilization techniques, decommissioned JRR-4, safety administration, international cooperation and human resources development. Also contained are lists of publications, meetings, granted permissions on laws and regulations concerning atomic energy, outcomes in service and technical developments and so on.

Journal Articles

Gradient residual stress and fatigue life prediction of induction hardened carbon steel S38C axles; Experiment and simulation

Qin, T. Y.*; Hu, F. F.*; Xu, P. G.; Zhang, H.*; Zhou, L.*; Ao, N.*; Su, Y. H.; Shobu, Takahisa; Wu, S. C.*

International Journal of Fatigue, 185, p.108336_1 - 108336_13, 2024/08

Journal Articles

Influence of interstitial carbon on bulk texture evolution of carbide-free high-entropy alloys during cold rolling using neutron diffraction

Fang, W.*; Liu, C.*; Zhang, J.*; Xu, P. G.; Peng, T.*; Liu, B.*; Morooka, Satoshi; Yin, F.*

Scripta Materialia, 249, p.116046_1 - 116046_6, 2024/08

Journal Articles

Gradient residual strain measurement procedure in surface impacted railway steel axles by using neutron scattering

Zhou, L.*; Zhang, H.*; Qin, T. Y.*; Hu, F. F.*; Xu, P. G.; Ao, N.*; Su, Y. H.; He, L. H.*; Li, X. H.*; Zhang, J. R.*; et al.

Metallurgical and Materials Transactions A, 55(7), p.2175 - 2185, 2024/07

 Times Cited Count:0 Percentile:0.02(Materials Science, Multidisciplinary)

Journal Articles

Elastic and inelastic neutron scattering experiments under high pressure in the frustrated antiferromagnet CuFeO$$_{2}$$

Terada, Noriki*; Khalyavin, D. D.*; Manuel, P.*; Asai, Shinichiro*; Masuda, Takatsugu*; Saito, Hiraku*; Nakajima, Taro*; Osakabe, Toyotaka

Physical Review B, 110(2), p.024406_1 - 024406_9, 2024/07

The frustrated antiferromagnet CuFeO$$_{2}$$ exhibits pressure-induced complex magnetic phase transitions from the commensurate collinear (CM1) phase to several incommensurate noncollinear phases. To study the effect of high pressure on magnetic interactions, we performed neutron diffraction and inelastic neutron scattering experiments under high-pressure conditions. With increasing pressure, the CM1 ground state becomes less stable against application of a magnetic field even below the critical pressure ($${P}$$ $$leqq$$ 3 GPa), as proved by the significant reduction in the critical magnetic field from $${H_{c1}}$$ =7.5 T to 4.5 T at 2.1 GPa. Additionally, the energy gap in the spin-wave dispersion relation is reduced from 1.0 to 0.88 meV by the application of a pressure of $${P}$$ = 2.1 GPa. Comparing the experimental results with spin-wave calculations revealed that the change in the spin-wave excitation can be explained by the reduction in either the uniaxial anisotropy term or the degree of separation in the nearest-neighbor exchange interactions.

Journal Articles

Low-background ultrahigh-purity aluminium window for small-angle neutron scattering using monochromatic cold neutrons

Kumada, Takayuki; Motokawa, Ryuhei; Iwase, Hiroki*

Journal of Applied Crystallography, 57(Part 3), p.728 - 733, 2024/06

Journal Articles

Impact of branching position and degree on uranium extraction by amines; A Supramolecular and thermodynamic study

Guerinoni, E.*; Giusti, F.*; Dourdain, S.*; Dufr$^e$che, J.-F.*; Motokawa, Ryuhei; Ueda, Yuki; Aoyagi, Noboru; Zemb, T.*; Pellet-Rostaing, S.*

Journal of Molecular Liquids, 403, p.124820_1 - 124820_11, 2024/06

Journal Articles

Freeze-crosslinking approach for preparing carboxymethyl cellulose nanofiber/zirconium hydrogels as fluoride adsorbents

Sekine, Yurina; Nankawa, Takuya; Sugita, Tsuyoshi; Nagakawa, Yoshiyasu*; Shibayama, Yuki; Motokawa, Ryuhei; Ikeda-Fukazawa, Tomoko*

Nanoscale, 16(19), p.9400 - 9405, 2024/05

A tough carboxymethyl cellulose nanofiber (CMF)/ zirconium (Zr) hydrogel was obtained by freeze cross-linking method. The hydrogel was prepared by adding HCl solution containing Zr to frozen CMF and thawing it. The hydrogel showed high adsorptivity for fluoride. This simple gelation method provides useful insight for developing hydrogel-metal complexes.

Journal Articles

Magnetic order in honeycomb layered U$$_2$$Pt$$_6$$Ga$$_{15}$$ studied by resonant X-ray and neutron scattering

Tabata, Chihiro; Kon, Fusako*; Ota, Kyugo*; Hibino, Ruo*; Matsumoto, Yuji*; Amitsuka, Hiroshi*; Nakao, Hironori*; Haga, Yoshinori; Kaneko, Koji

Physical Review B, 109(13), p.134403_1 - 134403_7, 2024/04

JAEA Reports

Annual report of Nuclear Science Research Institute, JFY2021

Nuclear Science Research Institute, Sector of Nuclear Science Research

JAEA-Review 2023-050, 178 Pages, 2024/03

JAEA-Review-2023-050.pdf:7.06MB

Nuclear Science Research Institute (NSRI) is composed of Planning and Management Department and six departments, namely Department of Operational Safety Administration, Department of Radiation Protection, Engineering Services Department, Department of Research Reactor and Tandem Accelerator, Department of Criticality and Hot Examination Technology and Department of Decommissioning and Waste Management, and each department manages facilities and develops related technologies to achieve the "Medium- to Long- term Plan" successfully and effectively. And, four research centers which are Advanced Science Research Center, Nuclear Science and Engineering Center, Nuclear Engineering Research Collaboration Center and Materials Sciences Research Center, belong to NSRI. In order to contribute the future research and development and to promote management business, this annual report summarizes information on the activities of NSRI of JFY 2021 as well as the activity on research and development carried out by Collaborative Laboratories for Advanced Decommissioning Science, Nuclear Safety Research Center and activities of Nuclear Human Resource Development Center, using facilities of NSRI.

Journal Articles

Stress measurement of stainless steel piping welds by complementary use of high-energy synchrotron X-rays and neutrons

Miura, Yasufumi*; Suzuki, Kenji*; Morooka, Satoshi; Shobu, Takahisa

Quantum Beam Science (Internet), 8(1), p.1_1 - 1_14, 2024/03

Journal Articles

Current status of experimental research that contributes to ensuring the quality of post-installed anchors using neutron beams

Mukai, Tomohisa*; Shobu, Takahisa

Kenchiku Bosai, (553), p.6 - 10, 2024/02

no abstracts in English

Journal Articles

Quantum critical behavior of the hyperkagome magnet Mn$$_3$$CoSi

Yamauchi, Hiroki; Sari, D. P.*; Yasui, Yukio*; Sakakura, Terutoshi*; Kimura, Hiroyuki*; Nakao, Akiko*; Ohara, Takashi; Honda, Takashi*; Kodama, Katsuaki; Igawa, Naoki; et al.

Physical Review Research (Internet), 6(1), p.013144_1 - 013144_9, 2024/02

Journal Articles

Principal preferred orientation evaluation of steel materials using time-of-flight neutron diffraction

Xu, P. G.; Zhang, S.-Y.*; Harjo, S.; Vogel, S. C.*; Tomota, Yo*

Quantum Beam Science (Internet), 8(1), p.7_1 - 7_13, 2024/01

Journal Articles

Upgrade of the small-angle neutron scattering diffractometer SANS-J at JRR-3

Kumada, Takayuki; Motokawa, Ryuhei; Oba, Yojiro; Nakagawa, Hiroshi; Sekine, Yurina; Micheau, C.; Ueda, Yuki; Sugita, Tsuyoshi; Birumachi, Atsushi; Sasaki, Miki; et al.

Journal of Applied Crystallography, 56(6), p.1776 - 1783, 2023/12

 Times Cited Count:1 Percentile:56.32(Chemistry, Multidisciplinary)

The combination of the existing position-sensitive photomultiplier and the $$^{3}$$He main detector with focusing devices, and the newly installed front detectors in SANS-J at JRR-3 covers small-angle neutron scattering signals in the range of the magnitude of the scattering vector Q from 0.002 to 6 nm-1 gaplessly with three standard device layouts. The installation of the front detector and a graphical user interface system largely improved the usability of SANS-J.

Journal Articles

Water fraction dependence of the aggregation behavior of hydrophobic fluorescent solutes in water-tetrahydrofuran

Tsuji, Hayato*; Nakahata, Masaki*; Hishida, Mafumi*; Seto, Hideki*; Motokawa, Ryuhei; Inoue, Takeru*; Egawa, Yasunobu*

Journal of Physical Chemistry Letters (Internet), 14(49), p.11235 - 11241, 2023/12

 Times Cited Count:0 Percentile:0.01(Chemistry, Physical)

Journal Articles

Neutron scattering study of antiferromagnet U$$_{2}$$Pt$$_{6}$$Al$$_{15}$$

Ota, Kyugo*; Matsumoto, Yuji*; Watabe, Yuki*; Kaneko, Koji; Tabata, Chihiro; Haga, Yoshinori

New Physics; Sae Mulli, 73(12), p.1170 - 1173, 2023/12

We have performed the neutron scattering study of antiferromagnet U$$_{2}$$Pt$$_{6}$$Al$$_{15}$$ with the honeycomb lattice to determine the magnetic structure. U$$_{2}$$Pt$$_{6}$$Al$$_{15}$$ exhibits two phase transitions at $$T_{rm m1}$$ = 9 K and $$T_{rm m2}$$ = 26 K. In phase I at $$T_{rm m1}$$ $$<$$ $$T$$ $$<$$ $$T_{rm m2}$$, the magnetic reflections described by a propagation vector $$kappa$$$$_{rm I}$$ = (1/3, 0, 0) were observed. In phase II at $$T$$ $$<$$ $$T_{rm m1}$$, magnetic reflections of $$kappa$$$$_{rm I}$$ = (1/3, 0, 0) and $$kappa$$$$_{rm II}$$ = (1/2, 0, 0) were observed and the magnetic reflection intensity of $$kappa$$$$_{rm I}$$ = (1/3, 0, 0) is weak but finite. The hysteresis in the temperature dependent intensities is observed across the phase transition at $$T_{rm m1}$$, suggesting that the transition at $$T_{rm m1}$$ is of first order.

Journal Articles

Structural changes of polystyrene particles in subcritical and supercritical water revealed by in situ small-angle neutron scattering

Shibata, Motoki*; Nakanishi, Yohei*; Abe, Jun*; Arima, Hiroshi*; Iwase, Hiroki*; Shibayama, Mitsuhiro*; Motokawa, Ryuhei; Kumada, Takayuki; Takata, Shinichi; Yamamoto, Katsuhiro*; et al.

Polymer Journal, 55(11), p.1165 - 1170, 2023/11

 Times Cited Count:1 Percentile:39.87(Polymer Science)

Journal Articles

Introduction to Neutron Radiography Facilities at the Japan Research Reactor-3

Kurita, Keisuke; Iikura, Hiroshi; Tsuchikawa, Yusuke; Kai, Tetsuya; Shinohara, Takenao; Odaira, Naoya*; Ito, Daisuke*; Saito, Yasushi*; Matsubayashi, Masahito

Journal of Physics; Conference Series, 2605, p.012005_1 - 012005_6, 2023/10

The Japan Research Ractor-3 (JRR-3) is operation resumed on February 26, 2021, and the shared use was also restarted in July, 2021. With the resumption of JRR-3 operation, two imaging facilities called TNRF and CNRF have also resumed their utilization. In this presentation, we report the details of these two neutron facilities.

1913 (Records 1-20 displayed on this page)