JOPSS - Search Results

Journal Articles

Uranium dissolution and uranyl peroxide formation by immersion of simulated fuel debris in aqueous H $_{2}$ O $_{2}$ solution

Kumagai, Yuta; Kusaka, Ryoji; Nakada, Masami; Watanabe, Masayuki; Akiyama, Daisuke*; Kirishima, Akira*; Sato, Nobuaki*; Sasaki, Takayuki*

Journal of Nuclear Science and Technology, 59(8), p.961 - 971, 2022/08

https://doi.org/10.1080/00223131.2021.2023055

Times Cited Count：2 Percentile：53.91(Nuclear Science & Technology)

We investigated potential degradation of fuel debris caused by H $_{2}$ O $_{2}$ , which is the oxidant of major impact from water radiolysis. We performed leaching experiments on different kinds of simulated debris comprising U, Fe, Cr, Ni, and Zr in an aqueous H $_{2}$ O $_{2}$ solution. Chemical analysis of the leaching solution showed that U dissolution was induced by H $_{2}$ O $_{2}$ . Raman analysis after the leaching revealed that uranyl peroxides were formed on the surface of the simulated debris. These results demonstrate that uranyl peroxides are possible alteration products of fuel debris from H $_{2}$ O $_{2}$ reaction. However, the sample in which the main uranium-containing phase was a U-Zr oxide solid solution showed much less uranium dissolution and no Raman signal of uranyl peroxides. Comparison of these results indicates that formation of an oxide solid solution of Zr with UO $_{2}$ improves the stability of fuel debris against H $_{2}$ O $_{2}$ reaction.

Journal Articles

Distribution of studtite and metastudtite generated on the surface of U $_{3}$ O $_{8}$ ; Application of Raman imaging technique to uranium compound

Kusaka, Ryoji; Kumagai, Yuta; Yomogida, Takumi; Takano, Masahide; Watanabe, Masayuki; Sasaki, Takayuki*; Akiyama, Daisuke*; Sato, Nobuaki*; Kirishima, Akira*

Journal of Nuclear Science and Technology, 58(6), p.629 - 634, 2021/06

https://doi.org/10.1080/00223131.2020.1854881

Times Cited Count：7 Percentile：66.68(Nuclear Science & Technology)

Journal Articles

Mechanisms of uranium mineralization by the yeast

Onuki, Toshihiko; Ozaki, Takuo; Yoshida, Takahiro*; Sakamoto, Fuminori; Kozai, Naofumi; Wakai, Eiichi; Francis, A. J.; Iefuji, Haruyuki*

Geochimica et Cosmochimica Acta, 69(22), p.5307 - 5316, 2005/11

https://doi.org/10.1016/j.gca.2005.06.023

Times Cited Count：48 Percentile：68.3(Geochemistry & Geophysics)

no abstracts in English

Journal Articles

A New type of neptunyl(VI) hydroxide which is topologically similar to -UO $_{2}$ (OH) $_{2}$

Nakada, Masami; Kitazawa, Takafumi*; Saito, Takashi*; Wang, J.*; Takeda, Masuo*; Yamashita, Toshiyuki; Saeki, Masakatsu

Bulletin of the Chemical Society of Japan, 76(7), p.1375 - 1378, 2003/07

https://doi.org/10.1246/bcsj.76.1375

Times Cited Count：6 Percentile：30.03(Chemistry, Multidisciplinary)

no abstracts in English

JAEA Reports

Evaluation of neutronic characteristics of STACY 80-cm-diameter cylindrical core fueled with 6% enriched uranyl nitrate solution

Yanagisawa, Hiroshi; Sono, Hiroki

JAERI-Tech 2003-057, 39 Pages, 2003/06

JAERI-Tech-2003-057.pdf:2.76MB

no abstracts in English

Journal Articles

The Resonance raman effect of UO $_{2}$ L $_{2}$ (L=NO $_{3}$ , CH $_{3}$ COO or Cl) type uranyl compounds in dimethyl sulfoxide

Soga, Takeshi

Journal of Nuclear Science and Technology, 39(Suppl.3), p.433 - 436, 2002/11

http://www.tandfonline.com/doi/abs/10.1080/00223131.2002.10875500

no abstracts in English

Journal Articles

Criticality safety benchmark experiment on 10% enriched uranyl nitrate solution using a 28-cm-thickness slab core

Yamamoto, Toshihiro; Miyoshi, Yoshinori; Kikuchi, Tsukasa*; Watanabe, Shoichi

Journal of Nuclear Science and Technology, 39(7), p.789 - 799, 2002/07

https://doi.org/10.3327/jnst.39.789

Times Cited Count：5 Percentile：34.58(Nuclear Science & Technology)

no abstracts in English

JAEA Reports

TRACY transient experiment databook, 3; Ramp feed experiment

Nakajima, Ken; Yamane, Yuichi; Ogawa, Kazuhiko; Aizawa, Eiju; Yanagisawa, Hiroshi; Miyoshi, Yoshinori

JAERI-Data/Code 2002-007, 123 Pages, 2002/03

JAERI-Data-Code-2002-007.pdf:4.34MB

no abstracts in English

JAEA Reports

TRACY transient experiment databook, 2; Ramp withdrawal experiment

Nakajima, Ken; Yamane, Yuichi; Ogawa, Kazuhiko; Aizawa, Eiju; Yanagisawa, Hiroshi; Miyoshi, Yoshinori

JAERI-Data/Code 2002-006, 176 Pages, 2002/03

JAERI-Data-Code-2002-006.pdf:6.33MB

no abstracts in English

JAEA Reports

TRACY transient experiment databook, 1; Pulse withdrawal experiment

Nakajima, Ken; Yamane, Yuichi; Ogawa, Kazuhiko; Aizawa, Eiju; Yanagisawa, Hiroshi; Miyoshi, Yoshinori

JAERI-Data/Code 2002-005, 158 Pages, 2002/03

JAERI-Data-Code-2002-005.pdf:6.55MB

no abstracts in English

Journal Articles

Voltammetric study on transfer of UO $_{2}^{2+}$ across the interface between aqueous and nitrobenzene solutions in the presence of Octyl(phenyl)-N,N-diisobutylcarbamoyl-methyl-phosphine oxide (CMPO)

Ying, M.*; Kitatsuji, Yoshihiro; Kimura, Takaumi; Yoshida, Zenko

Journal of Nuclear and Radiochemical Sciences, 2(1-2), p.11 - 15, 2001/12

https://doi.org/10.14494/jnrs2000.2.11

no abstracts in English

JAEA Reports

Annual report of STACY operation in FY. 2000; Experiments on neutron-interacting systems with two slab-shaped core tanks and 10% enriched uranyl nitrate solution, 2 (Contract research)

Onodera, Seiji; Hirose, Hideyuki; Izawa, Kazuhiko; Tanino, Shuichi; Kaminaga, Jota*; Sakuraba, Koichi; Miyauchi, Masakatsu; Tonoike, Kotaro; Miyoshi, Yoshinori; Yanagisawa, Hiroshi; et al.

JAERI-Tech 2001-057, 54 Pages, 2001/09

JAERI-Tech-2001-057.pdf:4.28MB

no abstracts in English

Journal Articles

Relativistic density functional calculations for potential energy curves of uranyl nitrate hydrate

Hirata, Masaru; Bastug, T.*; Tachimori, Shoichi; Sekine, Rika*; Onoe, Jun*; Nakamatsu, Hirohide*

Advances in Quantum Chemistry, Volume 37, p.325 - 333, 2001/00

https://doi.org/10.1016/S0065-3276(00)37023-X

no abstracts in English

Journal Articles

Electronic structures and chemical bonding of actinyl nitrates dihydrates

Hirata, Masaru; Tachimori, Shoichi; Sekine, Rika*; Onoe, Jun*; Nakamatsu, Hirohide*

Advances in Quantum Chemistry, Volume 37, p.335 - 351, 2001/00

https://doi.org/10.1016/S0065-3276(00)37024-1

no abstracts in English

Journal Articles

Development of solution behavior observation system under criticality accident conditions in TRACY

Ogawa, Kazuhiko; Morita, Toshio*; Yanagisawa, Hiroshi; Aizawa, Eiju; Sakuraba, Koichi; Sugawara, Susumu; Ono, Akio

Journal of Nuclear Science and Technology, 37(12), p.1088 - 1097, 2000/12

https://doi.org/10.3327/jnst.37.1088

no abstracts in English

Journal Articles

Measurement and analysis of neutron and -ray doses on criticality accidents of low-enriched uranyl nitrate solution using tissue-equivalent dosimeters at the TRACY facility

Sono, Hiroki; Yanagisawa, Hiroshi; Ono, Akio; Kojima, Takuji; Miyoshi, Yoshinori; Soramasu, Noboru*

Proceedings of the ANS International Topical Meeting on Advances in Reactor Physics and Mathematics and Computation into the Next Millennium (PHYSOR2000) (CD-ROM), 9 Pages, 2000/05

no abstracts in English

JAEA Reports

Critical configurations of basical slab cores with 10% enriched uranyl nitrate solution

; Miyoshi, Yoshinori; *; Yamane, Yuichi; Tonoike, Kotaro

JAERI-Tech 99-038, 61 Pages, 1999/04

JAERI-Tech-99-038.pdf:2.75MB

no abstracts in English

JAEA Reports

None

*; Nagasaki, Shinya*

JNC TJ1400 99-028, 62 Pages, 1999/02

JNC-TJ1400-99-028.pdf:1.59MB

no abstracts in English

JAEA Reports

Thermodynamic Date for Predicting Concentrations of AnO $_{2}$ $^{+}$ and AnO $_{2}$ $^{2+}$ Species in Geologic Environments

Choppin, G. R.*; Bronikowski, M.*; Chen, J.*; Byegard, J.*; Rai, D.*; Yui, Mikazu

JNC TN8400 99-012, 155 Pages, 1999/01

JNC-TN8400-99-012.pdf:5.53MB

This report provides thermodynamic data for predicting concentrations of pentavalent and hexavalent actinide species (AnO $_{2}^{+}$ and AnO $_{2}^{2+}$ ) in geologic environments, and contributes to an integration of the JNC chemical thermodynamic database, JNC-TDB (previously PNC-TDB), for the performance analysis of geological isolation system for high-level radioactive wastes. Thermodynamic data for the formation of complexes or compounds with hydroxide, chloride, fluoride, carbonate, nitrate, sulfate and phosphate are discussed in this report. The estimation of the stability constants by use of the Born equation is included. The Pitzer parameters for AnO $_{2}^{+}$ and AnO $_{2}$ $^{2+}$ , redox potentials and equilibrium constants of redox reactions for actinides are also included.

Journal Articles

Experiments on transient behavior of a low-enriched uranyl nitrate solution system with TRACY to study hypothetical criticality accidents in reprocessing plants

Yanagisawa, Hiroshi; Nakajima, Ken; ; ; Sakuraba, Koichi; ; *; *; Sonoda, Takashi; Ono, Akio

Proceedings of 6th International Conference on Nuclear Criticality Safety (ICNC '99), 2, p.900 - 906, 1999/00

no abstracts in English

Presentation/Publication Type

Journal/Book Title

Meeting title

First Author

Keyword

Language

Publication Year

Held year of conference

Uranium dissolution and uranyl peroxide formation by immersion of simulated fuel debris in aqueous H $_{2}$ O $_{2}$ solution

Distribution of studtite and metastudtite generated on the surface of U $_{3}$ O $_{8}$ ; Application of Raman imaging technique to uranium compound

Mechanisms of uranium mineralization by the yeast

A New type of neptunyl(VI) hydroxide which is topologically similar to -UO $_{2}$ (OH) $_{2}$

Evaluation of neutronic characteristics of STACY 80-cm-diameter cylindrical core fueled with 6% enriched uranyl nitrate solution

The Resonance raman effect of UO $_{2}$ L $_{2}$ (L=NO $_{3}$ , CH $_{3}$ COO or Cl) type uranyl compounds in dimethyl sulfoxide

Criticality safety benchmark experiment on 10% enriched uranyl nitrate solution using a 28-cm-thickness slab core

TRACY transient experiment databook, 3; Ramp feed experiment

TRACY transient experiment databook, 2; Ramp withdrawal experiment

TRACY transient experiment databook, 1; Pulse withdrawal experiment

Voltammetric study on transfer of UO $_{2}^{2+}$ across the interface between aqueous and nitrobenzene solutions in the presence of Octyl(phenyl)-N,N-diisobutylcarbamoyl-methyl-phosphine oxide (CMPO)

Annual report of STACY operation in FY. 2000; Experiments on neutron-interacting systems with two slab-shaped core tanks and 10% enriched uranyl nitrate solution, 2 (Contract research)

Relativistic density functional calculations for potential energy curves of uranyl nitrate hydrate

Electronic structures and chemical bonding of actinyl nitrates dihydrates

Development of solution behavior observation system under criticality accident conditions in TRACY

Measurement and analysis of neutron and -ray doses on criticality accidents of low-enriched uranyl nitrate solution using tissue-equivalent dosimeters at the TRACY facility

Critical configurations of basical slab cores with 10% enriched uranyl nitrate solution

None

Thermodynamic Date for Predicting Concentrations of AnO $_{2}$ $^{+}$ and AnO $_{2}$ $^{2+}$ Species in Geologic Environments

Experiments on transient behavior of a low-enriched uranyl nitrate solution system with TRACY to study hypothetical criticality accidents in reprocessing plants