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Yuko Hirohata
Researcher at Hokkaido University
Publications - 112
Citations - 737
Yuko Hirohata is an academic researcher from Hokkaido University. The author has contributed to research in topics: Hydrogen & Thermal desorption spectroscopy. The author has an hindex of 15, co-authored 112 publications receiving 723 citations.
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High performance tokamak experiments with a ferritic steel wall on JFT-2M
Kazuhiro Tsuzuki,Haruyuki Kimura,Hisato Kawashima,Masayasu Sato,Kensaku Kamiya,K. Shinohara,Hiroaki Ogawa,Katsumichi Hoshino,Mohammad Reza Bakhtiari,Satoshi Kasai,Kazuya Uehara,H. Sasao,Y. Kusama,N. Isei,Y.M. Miura,Toru Ogawa,M. Yamamoto,T. Shibata,K. Kikuchi,K. Miyachi,T. Ito,H. Ajikawa,Shinichi Nomura,Hiroaki Tsutsui,Ryuichi Shimada,T. Ido,Y. Hamada,Naoyuki Fukumoto,Masayoshi Nagata,Tadao Uyama,Hironobu Niimi,Shigeo Yatsu,Naoyuki Kayukawa,Tomoaki Hino,Yuko Hirohata,Yoshihiko Nagashima,Akira Ejiri,A. Amemiya,Y. Sadamoto,Akira Tsushima +39 more
TL;DR: In this article, the authors investigated the compatibility between the plasma and low activation ferritic steel, which is a candidate material for fusion demonstration reactors, and obtained a high normalized beta plasma of βN ~ 3, having both an internal transport barrier and a steady H-mode edge.
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Hydrogen retention properties of polycrystalline tungsten and helium irradiated tungsten
TL;DR: In this paper, the authors examined the hydrogen retention properties of polycrystalline tungsten and Tungsten by using an ECR ion irradiation apparatus and a technique of thermal desorption spectroscopy, TDS.
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Gas permeability of SiC/SiC composites as fusion reactor material
TL;DR: In this paper, the authors measured the permeability of SiC/SiC composite for first wall and blanket of fusion reactors by using a vacuum apparatus, which was carried out with pressure ranging from 102 to 105 Pa at room temperature.
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Effect of mixing of hydrogen into nitrogen plasma
TL;DR: In this paper, the hydrogen gas mixing was carried out in an electron cyclotron resonance (ECR) nitrogen plasma, and the relative density of molecular ion in the vicinity of a substrate was measured by an optical emission spectroscopy.
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Oxide layers on GaAs prepared by thermal, anodic and plasma oxidation: In-depth profiles and annealing effects
TL;DR: In this article, the in-depth profiles of oxide layers prepared by thermal, anodic or plasma oxidation were investigated by means of simultaneous Auger electron spectroscopy (AES) and secondary ion mass spectrometry (SIMS) measurements.