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Journal Articles

Corrosion property of container using hybrid material for thermal decomposition process of sulfuric acid

Ioka, Ikuo; Kuriki, Yoshiro*; Iwatsuki, Jin; Kawai, Daisuke*; Yokota, Hiroki*; Inagaki, Yoshiyuki; Kubo, Shinji

Proceedings of 2020 International Conference on Nuclear Engineering (ICONE 2020) (Internet), 5 Pages, 2020/08

A thermochemical water-splitting iodine-sulfur processes (IS process) is one of candidates for the large-scale production of hydrogen using heat from solar power. Severe corrosive environment which is thermal decomposition of sulfuric acid exists in the IS process. A hybrid material with the corrosion-resistance and the ductility was made by a plasma spraying and laser treatment. The specimen had excellent corrosion resistance in the condition of 95 mass% boiling sulfuric acid. This was attributed to the formation of SiO$$_{2}$$ on the surface. The container using the hybrid material was experimentally made. The pre-oxidized container using hybrid technique was prepared for the corrosion test in boiling sulfuric acid to evaluate the corrosion characteristics of the container. There was no detaching of the surface with the weld part and the R processing. We proposed the calculation method of corrosion rate from the ions dissolved in the sulfuric acid solution after the corrosion test.

Journal Articles

Study of container using hybrid technique for sulfuric acid decomposition of thermochemical water-splitting iodine-sulfur process

Ioka, Ikuo; Iwatsuki, Jin; Kuriki, Yoshiro*; Kawai, Daisuke*; Yokota, Hiroki*; Kubo, Shinji; Inagaki, Yoshiyuki; Sakaba, Nariaki

Mechanical Engineering Journal (Internet), 7(3), p.19-00377_1 - 19-00377_11, 2020/06

A thermochemical water-splitting iodine-sulfur processes (IS process) is one of candidates for the large-scale production of hydrogen with high cost performance. Severe corrosive environment which is thermal decomposition of sulfuric acid exists in the IS process. A hybrid material with the corrosion-resistance and the ductility was made by a plasma spraying and laser treatment. The specimen had excellent corrosion resistance in the condition of 95 mass% boiling sulfuric acid. This was attributed to the formation of SiO$$_2$$ on the surface. To confirm the production characteristics of a container using the hybrid material, the container which has a welded part, a chamfer, a curved surface was experimentally made. There was no detachment in the plasma spraying and laser treated layer of the container after the laser treatment. It was confirmed that the construction of the container with high corrosion resistance in sulfuric acid was possible in the hybrid technique.

Journal Articles

Isotope-selective microscale imaging of radioactive Cs without isobaric interferences using sputtered neutral mass spectrometry with two-step resonant ionization employing newly-developed Ti:Sapphire lasers

Sakamoto, Tetsuo*; Morita, Masato*; Kanenari, Keita*; Tomita, Hideki*; Sonnenschein, V.*; Saito, Kosuke*; Ohashi, Masaya*; Kato, Kotaro*; Iguchi, Tetsuo*; Kawai, Toshihide*; et al.

Analytical Sciences, 34(11), p.1265 - 1270, 2018/11

 Times Cited Count:8 Percentile:32.37(Chemistry, Analytical)

Journal Articles

Precise determination of $$^{12}_{Lambda}$$C level structure by $$gamma$$-ray spectroscopy

Hosomi, Kenji; Ma, Y.*; Ajimura, Shuhei*; Aoki, Kanae*; Dairaku, Seishi*; Fu, Y.*; Fujioka, Hiroyuki*; Futatsukawa, Kenta*; Imoto, Wataru*; Kakiguchi, Yutaka*; et al.

Progress of Theoretical and Experimental Physics (Internet), 2015(8), p.081D01_1 - 081D01_8, 2015/08

 Times Cited Count:14 Percentile:66.75(Physics, Multidisciplinary)

Level structure of the $$^{12}_{Lambda}$$C hypernucleus was precisely determined by means of $$gamma$$-ray spectroscopy. We identified four $$gamma$$-ray transitions via the $$^{12}$$C$$(pi^{+},K^{+}gamma)$$ reaction using a germanium detector array, Hyperball2. The spacing of the ground-state doublet $$(2^{-}, 1^{-}_{1})$$ was measured to be $$161.5pm0.3$$(stat)$$pm0.3$$ (syst)keV from the direct $$M1$$ transition. Excitation energies of the $$1^{-}_{2}$$ and $$1^{-}_{3}$$ states were measured to be $$2832pm3pm4$$, keV and $$6050pm8pm7$$, keV, respectively. The obtained level energies provide definitive references for the reaction spectroscopy of $$Lambda$$ hypernuclei.

Journal Articles

Photoemission and X-ray absorption studies of valence states in (Ni,Zn,Fe,Ti)$$_3$$O$$_4$$ thin films exhibiting photoinduced magnetization

Kobayashi, Masaki*; Oki, Yasuhiro*; Takizawa, Masaru*; Song, G. S.*; Fujimori, Atsushi; Takeda, Yukiharu; Terai, Kota*; Okane, Tetsuo; Fujimori, Shinichi; Saito, Yuji; et al.

Applied Physics Letters, 92(8), p.082502_1 - 082502_3, 2008/02

 Times Cited Count:12 Percentile:44.67(Physics, Applied)

Journal Articles

Soft X-ray magnetic circular dichroism study of weakly ferromagnetic Zn$$_{1-x}$$V$$_{x}$$O thin film

Ishida, Yukiaki*; Hwang, J. I.*; Kobayashi, Masaki*; Takeda, Yukiharu; Mamiya, Kazutoshi*; Okamoto, Jun*; Fujimori, Shinichi; Okane, Tetsuo; Terai, Kota*; Saito, Yuji; et al.

Applied Physics Letters, 90(2), p.022510_1 - 022510_3, 2007/01

 Times Cited Count:23 Percentile:64.27(Physics, Applied)

no abstracts in English

Oral presentation

Elucidation for thermal decomposition behaviour of the high-level radioactive liquid waste; Effect on the thermal decomposition reaction of lanthanoid/alkali metal nitrates caused by ruthenium

Kawai, Kota*; Nakano, Yoshio*; Takeshita, Kenji*; Nagai, Takayuki; Kobayashi, Hidekazu; Amamoto, Ippei; Ayame, Yasuo

no journal, , 

no abstracts in English

Oral presentation

Resonant laser secondary neutral mass spectrometry for micro imaging of radioactive isotopes, 2

Tomita, Hideki*; Saito, Kosuke*; Ohashi, Masaya*; Sonnenschein, V.*; Kato, Kotaro*; Suzuki, So*; Iguchi, Tetsuo*; Morita, Masato*; Sakamoto, Tetsuo*; Kanenari, Keita*; et al.

no journal, , 

no abstracts in English

Oral presentation

Application of partitioning and transmutation technology to waste management; An Attempt to assess total performance of advanced nuclear fuel cycle, 4; A Trial assessment for MOX plu-thermal cycle

Makino, Hitoshi; Asano, Hidekazu*; Usami, Tsuyoshi*; Kanehira, Norio*; Ikeda, Takao*; Kawai, Kota*; Watanabe, Daisuke*

no journal, , 

This presentation shows current status of discussion on "A trial assessment for MOX plu-thermal cycle" which is a challenge as part of an attempt to assess total performance of advanced nuclear fuel cycle in the Research Committee on Disposal of Radioactive Waste and Partitioning-Transmutation Technology.

Oral presentation

Application of partitioning and transmutation technology to waste management; Assessment of total performance of advanced nuclear fuel cycle, 3; An Assessment for MOX plu-thermal cycle

Makino, Hitoshi; Asano, Hidekazu*; Usami, Tsuyoshi*; Tsukada, Takeshi*; Ikeda, Takao*; Kawai, Kota*; Watanabe, Daisuke*

no journal, , 

This presentation shows current status of discussion on "An assessment for MOX plu-thermal cycle" which is a challenge as part of an attempt to assess total performance of advanced nuclear fuel cycle in the Research Committee on Disposal of Radioactive Waste and Partitioning-Transmutation Technology.

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