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Journal Articles

Generation of radioisotopes with accelerator neutrons by deuterons

Nagai, Yasuki; Hashimoto, Kazuyuki; Hatsukawa, Yuichi; Saeki, Hideya; Motoishi, Shoji; Sonoda, Nozomi; Kawabata, Masako; Harada, Hideo; Kin, Tadahiro*; Tsukada, Kazuaki; et al.

Journal of the Physical Society of Japan, 82(6), p.064201_1 - 064201_7, 2013/06

https://doi.org/10.7566/JPSJ.82.064201

Times Cited Count：43 Percentile：85.02(Physics, Multidisciplinary)

Journal Articles

Oxygen potential measurements of fluorite-type Zr $_{0.5}$ Pu $_{0.5}$ O $_{2-y}$ by EMF method

Otobe, Haruyoshi; Nakamura, Akio; Yamashita, Toshiyuki; Minato, Kazuo

Journal of Nuclear Materials, 344(1-3), p.219 - 222, 2005/09

https://doi.org/10.1016/j.jnucmat.2005.04.045

Times Cited Count：3 Percentile：24.22(Materials Science, Multidisciplinary)

Actinides-bearing zirconias are prominent candidate materials for various nuclear applications: targets for actinide transmutation, inert material fuels, radioactive waste forms, etc. In this study, the oxygen potential (g(O $_{2}$ )) behavior of fluorite-type (F-type) Zr $_{0.5}$ Pu $_{0.5}$ O $_{2-y}$ has been measured by EMF method using the zirconia oxygen sensor. It was found that the g(O $_{2}$ ) values of F-type Zr $_{0.5}$ Pu $_{0.5}$ O $_{2-y}$ were about 150 kJ/mol higher than those of F-type PuO $_{2-y}$ at the same oxygen-nonstoichiometric (O/M) values. The g(O $_{2}$ ) values of F-type Zr $_{0.5}$ Pu $_{0.5}$ O $_{2-y}$ were 50 kJ/mol lower than those of pyrochlore Zr $_{2}$ Pu $_{2}$ O $_{7+x}$ at the same O/M values. These results suggest that the g(O $_{2}$ ) behavior depends on the cation and anion ordering/disordering, in addition to the cation composition ratio (Zr/Pu).

Journal Articles

Oxygen potential and defect structure of oxygen-excess pyrochlore Ce $_{2}$ Zr $_{2}$ O $_{7+x}$

Otobe, Haruyoshi; Nakamura, Akio; Yamashita, Toshiyuki; Minato, Kazuo

Journal of Physics and Chemistry of Solids, 66(2-4), p.329 - 334, 2005/02

https://doi.org/10.1016/j.jpcs.2004.07.015

Times Cited Count：23 Percentile：65.92(Chemistry, Multidisciplinary)

Pyrochlore-type (P-type) zirconias have been attracting significant research interest as disposable forms of high-level radioactive waste. In this work, we have clarified the oxygen potentials (g(O $_{2}$ )) vs. oxygen nonstoichiometry (x) and temperature relations of P-type Ce $_{2}$ Zr $_{2}$ O $_{7+x}$ by the emf method and determined the lattice parameters (a0) with respect to x by XRD method.

JAEA Reports