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JAEA Reports

Feasibility study on magnetic separation

Oda, Yoshihiro; Funasaka, Hideyuki; Wang, X.*; Obara, Kenji*; Wada, Hitoshi*

JNC TY8400 2000-002, 47 Pages, 2000/03

JNC-TY8400-2000-002.pdf:2.53MB

no abstracts in English

Oral presentation

Investigation of in-reactor cesium chemical behavior in TEPCO's Fukushima Daiichi Nuclear Power Station accident, 9; Thermodynamics of evaporation of silicon compounds at high temperatures

Kobayashi, Yoshinao*; Ueda, Shigeru*; Sato, Isamu*; Osaka, Masahiko

no journal, ,

SiO and Si(OH) $_{4}$ can be Si source for Cs-bearing particle and other in-reactor compounds during Fukushima-Daiichi NPS accident. Dependencies of vapor pressure of those species on oxygen partial pressure and tenperature were evaluated thermodunamically. And experimental condition by chemical equilibrium method was determined in focusing Cs $_{2}$ O-SiO $_{2}$ system.

Oral presentation

Upgrading of hard X-ray photoelectron spectroscopy for chemical state analysis of environmental samples collected around Fukushima Daiichi Nuclear Power Plant

Kobata, Masaaki; Satou, Yukihiko; Okane, Tetsuo; Kawasaki, Ikuto; Yoshii, Kenji; Fukuda, Tatsuo; Osaka, Masahiko; Owada, Kenji*

no journal, ,

In order to enable chemical state analysis by hard X-ray photoelectron spectroscopy (HAXPES) for environmental samples such as radioactive microparticles collected around Fukushima Daiichi Nuclear Power Station, charge neutralization technique established using ion and electron coaxial irradiation. Using this technique, the chemical state analysis of the radioactive microparticles was realized.