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Hirata, Sakiko*; Kusaka, Ryoji; Meiji, Shogo*; Tamekuni, Seita*; Okudera, Kosuke*; Hamada, Shoken*; Sakamoto, Chihiro*; Honda, Takumi*; Matsushita, Kosuke*; Muramatsu, Satoru*; et al.
Inorganic Chemistry, 62(1), p.474 - 486, 2023/01
Times Cited Count：0 Percentile：0.01(Chemistry, Inorganic & Nuclear)Kitazato, Kohei*; Milliken, R. E.*; Iwata, Takahiro*; Abe, Masanao*; Otake, Makiko*; Matsuura, Shuji*; Takagi, Yasuhiko*; Nakamura, Tomoki*; Hiroi, Takahiro*; Matsuoka, Moe*; et al.
Nature Astronomy (Internet), 5(3), p.246 - 250, 2021/03
Times Cited Count：44 Percentile：97.1(Astronomy & Astrophysics)Here we report observations of Ryugu's subsurface material by the Near-Infrared Spectrometer (NIRS3) on the Hayabusa2 spacecraft. Reflectance spectra of excavated material exhibit a hydroxyl (OH) absorption feature that is slightly stronger and peak-shifted compared with that observed for the surface, indicating that space weathering and/or radiative heating have caused subtle spectral changes in the uppermost surface. However, the strength and shape of the OH feature still suggests that the subsurface material experienced heating above 300 
C, similar to the surface. In contrast, thermophysical modeling indicates that radiative heating does not increase the temperature above 200 C at the estimated excavation depth of 1 m, even if the semimajor axis is reduced to 0.344 au. This supports the hypothesis that primary thermal alteration occurred due to radiogenic and/or impact heating on Ryugu's parent body.
Yamada, Hirokazu*; Kawamura, Hiroshi; Tsuchiya, Kunihiko; Ishitsuka, Etsuo; Uchida, Munenori*; Akutsu, Yoichi; Motoki, Ryozo; Watanabe, Wataru; Hirata, Shogo*
JAERI-Tech 2004-036, 138 Pages, 2004/03
JAERI-Tech-2004-036.pdf:4.07MB
This document shows the model case concerned with the utilization of constructed facility for the construction of post irradiation examination facility for fusion blanket. In this report, the radioisotope application and development laboratory is considered as constructed facility for post irradiation examination facility and we planned to improve the radioisotope application and development laboratory to the facility of post irradiation examination for fusion material to reduce the construction fee for this facility and promotion of efficiency by concentration of any equipment for fusion material research.
Meiji, Shogo*; Hirata, Sakiko*; Kusaka, Ryoji; Honda, Takumi*; Tamekuni, Seita*; Muramatsu, Satoru*; Saito, Kenichi*; Hirao, Takehiro*; Haino, Takeharu*; Watanabe, Masayuki; et al.
no journal, ,
日下 良二; 渡邉 雅之
井口 佳哉*; 平田 早紀子*; 明地 省吾*
JP, 2021-161781 Patent licensing information
【課題】少量の試料を密閉空間で薄く均一に広げることが可能な赤外分光分析の試料台を提供する。 【解決手段】試料Xを配置可能な試料配置面11を有する光学素子10と、試料配置面の面方向と交差する方向に貫通する試料導入孔31を有する試料保持部材30と、試料配置面に向かって突出し、試料導入孔に嵌合可能な突出部42を有する蓋部材40と、を備え、光学素子10、試料保持部材30および蓋部材40は、この順に重ねられ、試料導入孔、試料配置面および突出部の先端面42Aにより密閉空間が形成され、先端面42Aが、密閉空間に封入された試料Xを、試料配置面11に向かって押圧可能に構成される。
