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(001) surface with supersonic seeded oxygen molecular beamKatsube, Daiki*; Ono, Shinya*; Inami, Eiichi*; Yoshigoe, Akitaka; Abe, Masayuki*
Vacuum and Surface Science, 65(11), p.526 - 530, 2022/11
The oxidation of oxygen vacancies at the surface of anatase TiO (001) was investigated by synchrotron radiation photoelectron spectroscopy and supersonic O beam (SSMB). The oxygen vacancies at the top surface and subsurface could be eliminated by the supply of hyperthermal oxygen molecules. Oxygen vacancies are present on the surface of anatase TiO(001) when it is untreated before transfer to a vacuum chamber. These vacancies, which are stable in the ambient condition, could also be effectively eliminated by using oxygen SSMB. This result is promising as a surface processing for various functional oxides.
(001) surface using supersonic seeded oxygen molecular beamKatsube, Daiki*; Ono, Shinya*; Takayanagi, Shuhei*; Ojima, Shoki*; Maeda, Motoyasu*; Origuchi, Naoki*; Ogawa, Arata*; Ikeda, Natsuki*; Aoyagi, Yoshihide*; Kabutoya, Yuito*; et al.
Langmuir, 37(42), p.12313 - 12317, 2021/10
Times Cited Count：1 Percentile：6.39(Chemistry, Multidisciplinary)We investigated the oxidation of oxygen vacancies at the surface of anatase TiO(001) using supersonic seeded molecular beam (SSMB) of oxygen. The oxygen vacancies at the top-surface and sub-surface could be eliminated by the supply of oxygen using an SSMB. These results indicate that the interstitial vacancies can be mostly assigned to oxygen vacancies, which can be effectively eliminated by using an oxygen SSMB. Oxygen vacancies are present on the surface of anatase TiO(001) when it is untreated before transfer to a vacuum chamber. These vacancies, which are stable in the as-grown condition, could also be effectively eliminated using the oxygen SSMB.
Abe, Shinya; Katada, Inao; Hoshino, Masato; Tokunaga, Hiroaki*; Horikoshi, Hidehiko*
JAEA-Review 2014-034, 81 Pages, 2014/11
JAEA-Review-2014-034.pdf:8.76MB
The Horonobe Underground Research Center conducts research and development to enhance the reliability of geological disposal technology, indicate the margin of technical safety for legally decided depth of repository, improve understanding of the deep geological environment, and promote greater public understanding for geological disposal technology. "YUME chisoukan" ceased its role as an exhibition facility as of end August 2012 as part of an administrative reform under the then Democratic Party rule, and came to be focused on disclosing the underground drifts to ascertain that JAEA is true to its tripartite agreement signed between the Hokkaido Prefecture, Town of Horonobe and JAEA (i.e., no nuclear materials will be used, etc.). It is also used as the facility to provide information on the research results of the Center. This report presents the statistical results of a questionnaire (2,566 responses) conducted from April to October 2013.
Abe, Shinya*; Nakata, Yutaka; Iitsuka, Tomoaki; Yamagishi, Kojiro*
JAERI-Tech 2003-077, 233 Pages, 2003/10
JAERI-Tech-2003-077.pdf:15.07MB
Japanese government is carrying out the administrative reform aiming to promote decentralization of authority, to magnify the field of private sectors, etc. in order to correspond appropriately to matured economy, internationalized market, etc. As one of the reforms, Japanese government decided that JAERI and JNC would unite into an independent administrative agency. The aims of the independent administrative agency institution include realization of effective and transparent system and management. The aim of the present investigation is to be useful for the new agency to develop a major business control system, which manages financial affairs and accounts not only efficiently but also in correspondence with open information to the public and promoting research activities effectively.
Abe, Shinya; Nakata, Yutaka; Iitsuka, Tomoaki; Yamagishi, Kojiro*
JAERI-Tech 2002-072, 142 Pages, 2002/10
JAERI-Tech-2002-072.pdf:17.05MB
In promoting the E-japan project (Electronic Government Policy) at JAERI, the following related activities were investigated: the national project, several social and ministry's plans, some foreign national cases and some japanese private enterprise's activities, etc. Office of IT Promotion in JAERI, getting along with the E-japan project, examined the policies to modify the current application/report system into the system based on digital certification and the Certificate Authority. These extensive investigations are described in this report.
Nakatani, Takayoshi; Kozaka, Tetsuo; Niitsuma, Koichi; Fujiwara, Koji; Semba, Yasunari; Abe, Shinya
no journal, ,
no abstracts in English
Katsube, Daiki*; Ono, Shinya*; Takayanagi, Shuhei*; Ojima, Shoki*; Maeda, Motoyasu*; Yoshida, Hikaru*; Nishi, Shizuka*; Yoshigoe, Akitaka; Abe, Masayuki*
no journal, ,
TiO has been extensively studied because of high photocatalytic activity. However, the basic reaction process of photocatalysis has not been understood yet. In this study, the difference in water adsorption reaction between rutile and anatase was clarified using synchrotron radiation soft X-ray photoelectron spectroscopy (XPS). The OH component observed at the higher binding energy side was clearly confirmed in the rutile type TiOTiO, suggesting that the rutile type is more reactive to water adsorption.
(001) surfaceKatsube, Daiki*; Ono, Shinya*; Kim, K.*; Tsuda, Yasutaka; Inami, Eiichi*; Yoshigoe, Akitaka; Abe, Masayuki*
no journal, ,
NOx-based gases emitted from engines and plants are an important issue from an environmental perspective. For the detoxification of NO, it is important to understand its reactivity and reaction mechanisms. The reactivity of anatase TiO(001) which is a highly active photocatalyst was studied by using NO supersonic molecular beams and synchrotron radiation XPS. It was found that the N1s peak was observed, indicating that the surface without surface cleaning reacts with NO molecules.
吉越 章隆
阿部 真之*; 勝部 大樹*; 大野 真也*
JP, 2019-153049 Patent licensing information Patent publication (In Japanese)
【課題】 効率的なN元素ドープTIO2の製造方法を提供する。 【解決手段】本発明に係るN元素ドープTIO2の製造方法は、ターゲットとなるTIO2を真空チャンバ内の所定位置に配置するステップと、真空チャンバを真空引きするステップと、ノズルを所定温度に加熱するステップと、ノズルを所定温度に維持しつつ、ノズルからNO分子の超音速分子線をターゲットに照射するステップとを備える。
