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大島 宏之; 森下 正樹*; 相澤 康介; 安藤 勝訓; 芦田 貴志; 近澤 佳隆; 堂田 哲広; 江沼 康弘; 江連 俊樹; 深野 義隆; et al.
Sodium-cooled Fast Reactors; JSME Series in Thermal and Nuclear Power Generation, Vol.3, 631 Pages, 2022/07
ナトリウム冷却高速炉(SFR: Sodium-cooled Fast Reactor)の歴史や、利点、課題を踏まえた安全性、設計、運用、メンテナンスなどについて解説する。AIを利用した設計手法など、SFRの実用化に向けた設計や研究開発についても述べる。
Fe
O with hole doping小林 正起*; Hwang, J. I.*; Song, G.*; 大木 康弘*; 滝沢 優*; 藤森 淳; 竹田 幸治; 藤森 伸一; 寺井 恒太*; 岡根 哲夫; et al.
Physical Review B, 78(15), p.155322_1 - 155322_4, 2008/10
被引用回数：6 パーセンタイル：28.97(Materials Science, Multidisciplinary)The electronic structure of Li-doped NiFeO has been investigated using photoemission spectroscopy (PES) and X-ray absorption spectroscopy (XAS). The Ni 
core-level PES and XAS spectra were not changed by Li doping. In contrast, the Fe
intensity increased with Li doping relative to the Fe
intensity. However, the increase of Fe is only 
of the doped Li content, suggesting that most of the doped holes enter the O and/or the charge-transferred configuration Ni 
. The Fe 
partial density of states and the host valence-band emission near valence-band maximum increased with Li content, consistent with the increase of electrical conductivity. Based on these findings, percolation of bound magnetic polarons is proposed as an origin of the ferromagnetic behavior.
O
thin films exhibiting photoinduced magnetization小林 正起*; 大木 康弘*; 滝沢 優*; Song, G. S.*; 藤森 淳; 竹田 幸治; 寺井 恒太*; 岡根 哲夫; 藤森 伸一; 斎藤 祐児; et al.
Applied Physics Letters, 92(8), p.082502_1 - 082502_3, 2008/02
被引用回数：14 パーセンタイル：48.04(Physics, Applied)By means of photoemission and X-ray absorption spectroscopy, we have studied the electronic structure of (Ni,Zn,Fe,Ti)
O
thin films, which exhibits a cluster glass behavior with a spin-freezing temperature 
of 
K and photo-induced magnetization (PIM) below . The Ni and Zn ions were found to be in the divalent states. Most of the Fe and Ti ions in the thin films were trivalent (Fe) and tetravalent (Ti
), respectively. While Ti doping did not affect the valence states of the Ni and Zn ions, a small amount of Fe ions increased with Ti concentration, consistent with the proposed charge-transfer mechanism of PIM.
田中 正暁; 大木 繁夫; 堂田 哲広; 内堀 昭寛; 松場 賢一; 岡野 靖; 山野 秀将; 江沼 康弘
no journal, ,
これまでに「常陽」、「もんじゅ」及び「JSFR」等の開発を通じて整備が進められたプラント動特性解析コード「Super-COPD」をはじめとする解析コード群について、実証炉開発(概念設計及び基本設計)及びSFRの社会実装に向けた安全設計・安全評価に資するシミュレーション技術のうち、原子力機構(JAEA)が整備を行う主なものについて概説する。
