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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.

JAEA Reports

Annual report of Department of Research Reactor and Tandem Accelerator, JFY2020 (Operation, utilization and technical development of JRR-3, JRR-4, NSRR, Tandem Accelerator, RI Production Facility and Tritium Process Laboratory)

Department of Research Reactor and Tandem Accelerator

JAEA-Review 2022-075, 112 Pages, 2023/03

JAEA-Review-2022-075.pdf:8.25MB

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), JRR-4 (Japan Research Reactor No.4), NSRR (Nuclear Safety Research Reactor), Tandem Accelerator, RI Production Facility, TPL (Tritium Process Laboratory) and FEL (Free Electron Laser). This annual report describes the activities of our department in fiscal year of 2020. We carried out the operation and maintenance, utilization, upgrading of utilization techniques, safety administration and international cooperation. 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.

JAEA Reports

Annual report of Department of Research Reactor and Tandem Accelerator, JFY2019 (Operation, Utilization and Technical Development of JRR-3, JRR-4, NSRR, Tandem Accelerator, RI Production Facility and Tritium Process Laboratory)

Department of Research Reactor and Tandem Accelerator

JAEA-Review 2022-064, 97 Pages, 2023/02

JAEA-Review-2022-064.pdf:2.91MB

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), JRR-4 (Japan Research Reactor No.4), NSRR (Nuclear Safety Research Reactor), Tandem Accelerator, RI Production Facility and TPL(Tritium Process Laboratory). This annual report describes the activities of our department in fiscal year of 2019. We carried out the operation and maintenance, utilization, upgrading of utilization techniques, safety administration and international cooperation. 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

Large scale production of $^{64}$ Cu and $^{67}$ Cu via the $^{64}$ Zn(n, p) $^{64}$ Cu and $^{68}$ Zn(n, np/d) $^{67}$ Cu reactions using accelerator neutrons

Kawabata, Masako*; Motoishi, Shoji*; Ota, Akio*; Motomura, Arata*; Saeki, Hideya*; Tsukada, Kazuaki; Hashimoto, Shintaro; Iwamoto, Nobuyuki; Nagai, Yasuki*; Hashimoto, Kazuyuki*

Journal of Radioanalytical and Nuclear Chemistry, 330(3), p.913 - 922, 2021/12

https://doi.org/10.1007/s10967-021-07987-3

Times Cited Count：7 Percentile：72.21(Chemistry, Analytical)

Both $^{64}$ Cu and $^{67}$ Cu are promising radionuclides in nuclear medicine. Production yields of these radionuclides were quantified by irradiating 55.4 g of natural zinc with accelerator neutrons. Clinically suitable $^{64}$ Cu and $^{67}$ Cu yields were estimated by experimental based numerical simulations using 100 g of enriched $^{64}$ Zn and $^{68}$ Zn, respectively, and elevated neutron fluxes from 40 MeV, 2 mA deuterons. A combined thermal- and resin-separation method was developed to isolate $^{64}$ Cu and $^{67}$ Cu from zinc, resulting in 73% separation efficiency and 97% zinc recovery. Such methods can provide large scale production of $^{64}$ Cu and $^{67}$ Cu for clinical applications.

JAEA Reports

Annual report of Department of Research Reactor and Tandem Accelerator, JFY2018 (Operation, utilization and technical development of JRR-3, JRR-4, NSRR, Tandem Accelerator, RI Production Facility and Tritium Process Laboratory)

Department of Research Reactor and Tandem Accelerator

JAEA-Review 2020-074, 105 Pages, 2021/03

JAEA-Review-2020-074.pdf:3.72MB

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), JRR-4 (Japan Research Reactor No.4), NSRR (Nuclear Safety Research Reactor), Tandem Accelerator, RI Production Facility and TPL (Tritium Process Laboratory). This annual report describes the activities of our department in fiscal year of 2018. We carried out the operation and maintenance, utilization, upgrading of utilization techniques, safety administration and international cooperation. 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.

JAEA Reports

Annual report of Department of Research Reactor and Tandem Accelerator, JFY2017 (Operation, utilization and technical development of JRR-3, JRR-4, NSRR, Tandem Accelerator, RI Production Facility and Tritium Process Laboratory)

Department of Research Reactor and Tandem Accelerator

JAEA-Review 2020-073, 113 Pages, 2021/03

JAEA-Review-2020-073.pdf:3.87MB

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), JRR-4 (Japan Research Reactor No.4), NSRR (Nuclear Safety Research Reactor), Tandem Accelerator, RI Production Facility and Tritium Process Laboratory. This annual report describes the activities of our department in fiscal year of 2017. We carried out the operation and maintenance, utilization, upgrading of utilization techniques, safety administration and international cooperation. 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.

JAEA Reports

Annual report of Department of Research Reactor and Tandem Accelerator, JFY2016 (Operation, utilization and technical development of JRR-3, JRR-4, NSRR, Tandem Accelerator, RI Production Facility and Tritium Process Laboratory)

Department of Research Reactor and Tandem Accelerator

JAEA-Review 2020-072, 102 Pages, 2021/03

JAEA-Review-2020-072.pdf:3.86MB

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), JRR-4 (Japan Research Reactor No.4), NSRR (Nuclear Safety Research Reactor), Tandem Accelerator, RI Production Facility and Tritium Process Laboratory). This annual report describes the activities of our department in fiscal year of 2016. We carried out the operation and maintenance, utilization, upgrading of utilization techniques, safety administration and international cooperation. 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

Electron-tracking Compton camera imaging of technetium-95m

Hatsukawa, Yuichi*; Hayakawa, Takehito*; Tsukada, Kazuaki; Hashimoto, Kazuyuki*; Sato, Tetsuya; Asai, Masato; Toyoshima, Atsushi; Tanimori, Toru*; Sonoda, Shinya*; Kabuki, Shigeto*; et al.

PLOS ONE (Internet), 13(12), p.e0208909_1 - e0208909_12, 2018/12

AA2018-0639.pdf:2.39MB

https://doi.org/10.1371/journal.pone.0208909

Times Cited Count：3 Percentile：30.05(Multidisciplinary Sciences)

Imaging of $^{95m}$ Tc radioisotope was conducted using an electron tracking-Compton camera (ETCC). $^{95m}$ Tc emits 204, 582, and 835 keV rays, and was produced in the $^{95}$ Mo(p,n) $^{95m}$ Tc reaction with a $^{95}$ Mo-enriched target. The recycling of the $^{95}$ Mo-enriched molybdenum trioxide was investigated, and the recycled yield of $^{95}$ Mo was achieved to be 70% - 90%. The images were obtained with each of the three rays. Results showed that the spatial resolution increases with increasing -ray energy, and suggested that the ETCC with high-energy -ray emitters such as $^{95m}$ Tc is useful for the medical imaging of deep tissue and organs in the human body.

Journal Articles

New production method and applications of $^{67}$ Cu suitable for both cancer diagnosis and therapy

Nagai, Yasuki*; Tsukada, Kazuaki

Isotope News, (753), p.28 - 32, 2017/10

no abstracts in English

Journal Articles

SPECT imaging of mice with $^{99m}$ Tc-radiopharmaceuticals obtained from $^{99}$ Mo produced by $^{100}$ Mo(n,2n) $^{99}$ Mo and fission of $^{235}$ U

Hashimoto, Kazuyuki; Nagai, Yasuki; Kawabata, Masako; Sato, Nozomi*; Hatsukawa, Yuichi; Saeki, Hideya; Motoishi, Shoji*; Ota, Masayuki; Konno, Chikara; Ochiai, Kentaro; et al.

Journal of the Physical Society of Japan, 84(4), p.043202_1 - 043202_4, 2015/04

https://doi.org/10.7566/JPSJ.84.043202

Times Cited Count：8 Percentile：53(Physics, Multidisciplinary)

Journal Articles

Complexation of lutetium-177 with bifunctional chelators in the presence of Mg, Cu, and Yb

Watanabe, Satoshi; Hashimoto, Kazuyuki; Ishioka, Noriko

JAEA-Review 2014-050, JAEA Takasaki Annual Report 2013, P. 102, 2015/03

https://doi.org/10.11484/jaea-review-2014-050

Journal Articles

Lutetium-177 complexation of DOTA and DTPA in the presence of competing metals

Watanabe, Satoshi; Hashimoto, Kazuyuki; Ishioka, Noriko

Journal of Radioanalytical and Nuclear Chemistry, 303(2), p.1519 - 1521, 2015/02

https://doi.org/10.1007/s10967-014-3590-3

Times Cited Count：10 Percentile：60.64(Chemistry, Analytical)

As basic studies of bifunctional chelating agent for $^{177}$ Lu-labeled antibodies, $^{177}$ Lu complexation of DOTA and DTPA was investigated by the addition of competing metals, Ca(II), Fe(II) and Zn(II). From comparison of competing metals, the inhibition by competing metals on the $^{177}$ Lu complexation was in the order of Ca(II) Fe(II) Zn(II) and Ca(II) Zn(II) Fe(II) as DOTA and DTPA, respectively. For comparison between DOTA and DTPA, the susceptibility to the inhibition on $^{177}$ Lu complexation by all the three competing metals was DTPA DOTA. Therefore, it was found that DTPA is advantageous for $^{177}$ Lu complexation compared with DOTA in the presence of Ca(II), Fe(II) and Zn(II), and that the elimination of Fe from $^{177}$ Lu solution is especially effective because the $^{177}$ Lu complexation of DTPA is highly inhibited by Fe(II).

Journal Articles

New phenomenon observed in thermal release of $^{99m}$ Tc from molten $^{100}$ MoO $_{3}$

Kawabata, Masako; Nagai, Yasuki; Hashimoto, Kazuyuki; Saeki, Hideya; Motoishi, Shoji*; Sato, Nozomi*; Ota, Akio*; Shiina, Takayuki*; Kawauchi, Yukimasa*

Journal of the Physical Society of Japan, 84(2), p.023201_1 - 023201_4, 2015/02

https://doi.org/10.7566/JPSJ.84.023201

Times Cited Count：6 Percentile：45.25(Physics, Multidisciplinary)

$^{99m}$ Tc for medical use can be separated by thermochromatography from a molten $^{99}$ MoO $_{3}$ sample. Effect of moist oxygen gas on the $^{99m}$ Tc release from molten $^{99}$ MoO $_{3}$ samples was investigated using a $^{99}$ Mo/ $^{99m}$ Tc generator. $^{99}$ Mo was produced with $^{100}$ Mo(n,2n) $^{99}$ Mo. A new phenomenon has been observed: release rate, separation- and recovery-efficiencies of $^{99m}$ Tc were higher in the moist oxygen gas than those in the dry oxygen gas. The present result is a significant progress towards the stable production of a high quality $^{99m}$ Tc from a molten MoO $_{3}$ sample with high separation efficiency. The result would also give us a new insight into the interaction between the moist oxygen gas and the molten MoO $_{3}$ .

Journal Articles

Production of highly purified no-carrier-added $^{177}$ Lu for radioimmunotherapy

Watanabe, Satoshi; Hashimoto, Kazuyuki; Watanabe, Shigeki; Iida, Yasuhiko*; Hanaoka, Hirofumi*; Endo, Keigo*; Ishioka, Noriko

Journal of Radioanalytical and Nuclear Chemistry, 303(1), p.935 - 940, 2015/01

https://doi.org/10.1007/s10967-014-3534-y

Times Cited Count：11 Percentile：67.3(Chemistry, Analytical)

Journal Articles

Direct measurement of radioactive carbon in vietnamese vodkas by liquid scintillation counter

Hattori, Takamitsu

Radioisotopes, 63(8), p.399 - 403, 2014/08

https://doi.org/10.3769/radioisotopes.63.399

From the view point of applying to laboratory exercise of radioactivity measurement by a Liquid Scintillation Counter (LSC), Vietnamese vodkas have specific features as measurement samples, for example, they are colorless, have high concentration of ethanol, and only very few organic materials are included. Investigation was made to make sure that the Vietnamese vodkas are appropriate or not as a measurement sample for the LSC exercise. Direct measurements of $^{14}$ C without any chemical pre-treatment were made on both radioactive concentrations and specific activities of three kinds of Vietnamese vodka and also pure ethanol reagent. The LSC measurements reveal that estimated $^{14}$ C concentration is proportional to ethanol concentration in samples and that specific activity of $^{14}$ C shows good agreement among the Vietnamese vodkas and pure ethanol, as well as the reference value of 0.25 Bq/g of Carbon. Thus the conclusion is derived that the Vietnamese vodkas can be applied with high accuracy to the LSC exercise as measurement samples.