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Journal Articles

RI production using research reactors; Activities at JRR-3

Kinase, Masami

Radioisotopes, 74(2), p.233 - 238, 2025/07

no abstracts in English

Journal Articles

Characterization of micelles of the thermo-responsive zwitterionic surfactant, 3-($$n$$-nonyl N,N-dimethylammonio)-propyl sulfate, present in isotropic solutions above its upper critical solution temperature

Tanji, Tamao*; Kusunoki, Yuto*; Nakagawa, Taichi; Takase, Tsugiko*; Ueda, Yuki; Motokawa, Ryuhei; Hinze, W. L.*; Takagai, Yoshitaka*

Langmuir, 41(21), p.13184 - 13191, 2025/06

 Times Cited Count:0

Journal Articles

A New metal extraction method using fluorous solvents

Ueda, Yuki; Micheau, C.; Motokawa, Ryuhei

Fuain Kemikaru, 54(5), p.53 - 60, 2025/05

no abstracts in English

Journal Articles

Spin density wave and van Hove singularity in the kagome metal CeTi$$_3$$Bi$$_4$$

Park, P.*; Ortiz, B. R.*; Spargue, M.*; Sakuya, A. P.*; Chen, S. A.*; Frontzek, M. D.*; Tian, W.*; Sibille, R.*; Mazzone, D. G.*; Tabata, Chihiro; et al.

Nature Communications (Internet), 16, p.4384_1 - 4384_9, 2025/05

 Times Cited Count:0

Journal Articles

Residual stress measurement and lifetime evaluation of railway axles by neutron scattering technology

Hu, F.-F.*; Qin, T.-Y.*; Ao, N.*; Xu, P. G.; Su, Y. H.; Parker, J. D.*; Shinohara, Takenao; Shobu, Takahisa; Kang, G.-Z.*; Ren, M.-M.; et al.

Journal of Traffic and Transportation Engineering, 25(2), p.75 - 93, 2025/04

Journal Articles

Magnetoferroelectric phase transition induced by latent spin-lattice coupling in the geometrically frustrated magnet $$mathrm{CuFe_{0.95}Al_{0.05}O_{2}}$$

Tamatsukuri, Hiromu; Uchihara, Takeru*; Mitsuda, Setsuo*; Ishii, Yuta*; Nakao, Hironori*; Takehana, Kanji*; Imanaka, Yasutaka*

Physical Review B, 111(13), p.134403_1 - 134403_9, 2025/04

 Times Cited Count:0 Percentile:0.00(Materials Science, Multidisciplinary)

Journal Articles

Simulation study on dose and LET of neutron irradiation for biological experiments using spallation, reactor, and compact neutron sources

Sweet, M.*; Mishima, Kenji*; Harada, Masahide; Kurita, Keisuke; Iikura, Hiroshi; Tasaki, Seiji*; Kikuchi, Norio*

Quantum Beam Science (Internet), 9(2), p.11_1 - 11_17, 2025/04

Neutron beam, being electrically neutral and highly penetrating, offers unique advantages for irradiation of biological species such as plants, seeds, and microorganisms. We comprehensively investigated the potential of neutron irradiation for inducing genetic mutations using simulations of J-PARC BL10, JRR-3 TNRF, and KUANS for spallation, reactor, and compact neutron sources.

JAEA Reports

Expansion of the JRR-3 user application system; RING (Research Information NaviGator)

Abe, Kazuhide

JAEA-Review 2024-065, 26 Pages, 2025/03

JAEA-Review-2024-065.pdf:2.55MB

The Japan Atomic Energy Agency's research reactor, JRR-3, resumed operations on February 26, 2021, after nearly a decade. As a shared-use facility, JRR-3 is operated to accommodate external users as well. The procedures, from research proposal submissions to final report submissions, are conducted through the online system JRR-3 RING (Research Information NaviGator) (https://jrr3ring.jaea.go.jp/). RING enables integrated management of proposal submissions, schedule adjustments, data sharing, and report submissions, and it has been upgraded in preparation for the resumption of JRR-3 operations. RING is specifically designed to enhance the convenience of beamline users, featuring simplified application processes, improved flexibility in schedule coordination, and enhanced data management capabilities. With the implementation of this system, users can conduct their research more efficiently and securely. Moving forward, JRR-3 aims to expand its role as a platform for neutron research, accessible to a diverse range of researchers both domestically and internationally. The resumption of operations and the expansion of RING mark a significant step toward revitalizing neutron research and fostering collaboration with industries and academia.

JAEA Reports

Annual report of Nuclear Science Research Institute, JFY 2023

Nuclear Science Research Institute

JAEA-Review 2024-058, 179 Pages, 2025/03

JAEA-Review-2024-058.pdf:7.42MB

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 2023 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.

JAEA Reports

Annual report of Nuclear Science Research Institute, JFY 2022

Nuclear Science Research Institute

JAEA-Review 2024-057, 178 Pages, 2025/03

JAEA-Review-2024-057.pdf:8.51MB

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 2022 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.

JAEA Reports

Annual report of Department of Research Reactor and Tandem Accelerator, JFY2023 (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 Infrastructure Technology Development

JAEA-Review 2024-051, 112 Pages, 2025/03

JAEA-Review-2024-051.pdf:4.33MB

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). It is also responsible for the decommissioning of JRR- 4 (Japan Research Reactor No.4) and the management of JRR-1 (Japan Research Reactor No.1) and FEL (Free Electron Laser). This annual report describes the activities of our department in fiscal year of 2023. 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

Nondestructive elemental analysis by prompt gamma-ray analysis to accelerate cultural property research

Osawa, Takahito

Materia, 64(3), p.153 - 156, 2025/03

In order to obtain accurate information on the elemental composition in a sample, it is very important to select an appropriate analytical method, and it is necessary to have a correct understanding of the advantages and disadvantages of each analytical method. This paper introduces prompt gamma-ray analysis as an unusual method that is different from elemental analysis methods that readers may be familiar with, and explains what makes it different from well-known analysis methods. The research on cultural properties conducted with the prompt gamma-ray analysis system (PGA) and future developments will also be described.

Journal Articles

Spin-singlet ground state with spin gap in $$S_{rm eff}$$ = $$frac{1}{2}$$ antiferromagnetic tetramer compound Yb$$_2$$SiO$$_5$$

Hase, Masashi*; Kaneko, Koji; Tabata, Chihiro; Yamauchi, Hiroki; Tsujii, Naohito*; D$"o$nni, A.*

Physical Review B, 111(9), p.094403_1 - 094403_9, 2025/03

 Times Cited Count:0 Percentile:0.00(Materials Science, Multidisciplinary)

Journal Articles

Physical properties of intergrowth compound Eu$$_{2}$$CuZn$$_{2}$$P$$_{3}$$

May, A. F.*; Tabata, Chihiro; Okamoto, Satoshi*; Ortiz, B. R.*; Christianson, A. D.*; Yan, J.*; Kaneko, Koji; McGuire, M. A.*

Physical Review Materials (Internet), 9(2), p.024406_1 - 024406_13, 2025/02

 Times Cited Count:0 Percentile:0.00(Materials Science, Multidisciplinary)

Journal Articles

Chemical characteristics of the Yamato-type (CY) carbonaceous chondrites

Ebihara, Mitsuru*; Shirai, Naoki*; Osawa, Takahito; Yamaguchi, Akira*

Geochimica et Cosmochimica Acta, 389, p.200 - 210, 2025/01

 Times Cited Count:2 Percentile:91.17(Geochemistry & Geophysics)

The 15 elements including most major elements of 12 carbonaceous chondrites collected in Antarctica were quantified using neutron-induced prompt gamma-ray analysis. While some of these samples were observed to share affinities with CI or CM chondrites, they do not exhibit the same characteristics as the known CI or CM chondrites. As a result, a new group named "CY" has been proposed for these meteorites. Common among the 12 meteorites is the depletion of volatile elements H and chlorine, showing a correlation and being depleted compared to non-Antarctic CI levels. Based on the abundance of moderately volatile elements Mn and S, the 12 meteorites can be divided into two groups: one with levels similar to non-Antarctic CI and the other with intermediate levels between CI and CM. These results suggest that CY chondrites originate from distinct parent bodies (materials), and considering two different parent bodies (materials) is necessary.

Journal Articles

Nanoconfinement-driven energy-efficient CO$$_{2}$$ capture and release at high pressures on a unique large-pore mesoporous carbon

Szab$'o$, L.*; Inoue, Mizuki*; Sekine, Yurina; Motokawa, Ryuhei; Matsumoto, Yusuke*; Nge, T. T.*; Ismail, E.*; Ichinose, Izumi*; Yamada, Tatsuhiko*

ChemSusChem, p.e202402034_1 - e202402034_13, 2025/00

 Times Cited Count:0 Percentile:0.00(Chemistry, Multidisciplinary)

Here, we developed a large-pore mesoporous carbon with pore sizes centered around 20-30 nm using a templated technical lignin. During the soft-templating process, unique cylindrical supramolecular assemblies form from the copolymer template, distinct from other systems reported thus far. This peculiar nanostructuring takes place due to the presence of polyethylene glycol (PEG) segments on both the Pluronic template and the PEG- grafted lignin derivative (glycol lignin). A large increase in CO$$_{2}$$ uptake occurs on the resulting large-pore mesoporous carbon at 270 K close to the saturation pressure, owing to capillary condensation.

Journal Articles

Large spontaneous Hall effect with flexible domain control in the antiferromagnetic material TaMnP

Kotegawa, Hisashi*; Nakamura, Akira*; Huyen, V. T. N.*; Arai, Yuki*; To, Hideki*; Sugawara, Hitoshi*; Hayashi, Junichi*; Takeda, Keiki*; Tabata, Chihiro; Kaneko, Koji; et al.

Physical Review B, 110(21), p.214417_1 - 214417_8, 2024/12

 Times Cited Count:0 Percentile:0.00(Materials Science, Multidisciplinary)

Journal Articles

Tracer diffusion coefficient measurements on NASICON-type Lithium-ion conductor LAGP using neutron radiography between 25$$^{circ}$$C and 500$$^{circ}$$C

Takagi, Honoka*; Yabutsuka, Takeshi*; Hayashida, Hirotoshi*; Song, F.; Kai, Tetsuya; Shinohara, Takenao; Kurita, Keisuke; Iikura, Hiroshi; Yamamoto, Norio*; Nakajima, Minoru*; et al.

Solid State Ionics, 417, p.116716_1 - 116716_7, 2024/12

 Times Cited Count:0 Percentile:0.00(Chemistry, Physical)

JAEA Reports

Report on research and development of neutron beam utilization at JRR-3 for internal use in FY2021 and FY2022

Materials Sciences Research Center

JAEA-Review 2024-037, 141 Pages, 2024/11

JAEA-Review-2024-037.pdf:13.08MB

Fifteen neutron beam experimental instruments managed by JAEA are installed in JRR-3 (Japan Research Reactor No.3) and are available for internal use including upgrading of instruments and for external users to produce various research results. This report summarizes the progress of internal application research and technical development such as upgrading of neutron beam instruments in the fiscal years 2021 and 2022 after the restart of operation.

Journal Articles

Evaluation of analytical uncertainty in quantitative determination of elements; The Case of boron

Sumita, Takehiro*; Osawa, Takahito; Chiu, I.-H.; Ikeda, Atsushi

Analytica Chimica Acta, 1329, p.343256_1 - 343256_10, 2024/11

 Times Cited Count:1 Percentile:40.01(Chemistry, Analytical)

2022 (Records 1-20 displayed on this page)