Search Results - "UEDA, Yoshio"

Behavior of tungsten under irradiation and plasma interaction by Rieth, Michael, Doerner, Russell, Hasegawa, Akira, Ueda, Yoshio, Wirtz, Marius

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LIBS measurement of trace tantalum and rhenium in tungsten for in-situ diagnostic of nuclear transmutation by Ibano, Kenzo, Nishijima, Daisuke, Ueda, Yoshio, Doerner, Russell P.

“…Calibration-free laser-induced breakdown spectroscopy (CF-LIBS) was applied to tungsten (W)- tantalum (Ta) alloy and W-rhenium (Re) alloy. In the W-Ta alloy…”
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Degradation of tungsten monoblock divertor under cyclic high heat flux loading by Nogami, Shuhei, Toyota, Michitoshi, Guan, Wenhai, Hasegawa, Akira, Ueda, Yoshio

“…•Degradation of pure W monoblock divertor during high heat loading at 20 MW/m2 was evaluated and crack formation mechanism was discussed.•Macro-crack formation…”
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Observation of surface deformation of tungsten exposed to single pulsed high heat flux and magnetic field for divertor design by Okita, Takafumi, Matsuda, Yuki, Saito, Sho, Hoashi, Eiji, Ibano, Kenzo, Ueda, Yoshio

“…Tungsten (W) is one of candidate surface materials for a plasma facing component (PFC) in a magnetically confinement fusion reactor such as a divertor from the…”
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Hydrogen removal by electron cyclotron wall conditioning with neon gas and its impact of tokamak plasma start-up on the QUEST spherical tokamak by Fukumoto, Masakatsu, Yue, Qilin, Hanada, Kazuaki, Kojima, Shinichiro, Nakano, Tomohide, Yoshida, Naoaki, Ikezoe, Ryuya, Nagashima, Yoshihiko, Ido, Takeshi, Onchi, Takumi, Idei, Hiroshi, Iguchi, Hiroki, Komiyama, Takumi, Shikama, Taiichi, Ejiri, Akira, Masuzaki, Suguru, Sakamoto, Mizuki, Ueda, Yoshio, Kuroda, Kengoh, Kono, Kaori, Shimabukuro, Shun, Higashijima, Aki

“…Electron cyclotron wall conditioning with neon gas (Ne-ECWC) has been performed on the normal conducting spherial tokamak QUEST with metal walls under a…”
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Evaluation of Marangoni convection and free surface velocity of molten tungsten for tungsten divertor by Hamaguchi, Kohei, Hoashi, Eiji, Okita, Takafumi, Ibano, Kenzo, Ueda, Yoshio

“…A tungsten divertor will be repetitively subjected to high heat fluxes when plasma disruptions or edge-localized modes occur, and the surface of the divertor…”
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Study on melting and solidification behaviors of tungsten loaded by high heat flux for divertor in tokamak fusion reactor by Hoashi, Eiji, Kuroyanagi, Shinpei, Okita, Takafumi, Maeji, Takeru, Ibano, Kenzo, Ueda, Yoshio

“…Tungsten is a candidate as a surface material of divertor in Tokamak fusion reactor. A pulsed high heat flux emitted in plasma disruption and Type I Edge…”
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Molten layer characteristics of W materials and film coated W by pulsed laser irradiation by Inoue, Daisuke, Ibano, Kenzo, Yoshikawa, Satoru, Maeji, Takeru, Ueda, Yoshio

“…•Laser induced heat flux up to 6.6GW/m2 formed >100μm surface deformation on W.•W and W-10wt%Re showed similar deformations in both macro- and micro-…”
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In-situ measurement of surface modifications of tungsten exposed to pulsed high heat flux for divertor design in tokamak-type fusion nuclear reactors by Matsuda, Yuki, Yamashita, Shohei, Miyamoto, Yusei, Motoi, Daichi, Okita, Takafumi, Hoashi, Eiji, Ibano, Kenzo, Ueda, Yoshio

“…•Experiments for clarifying W melting behavior under disruption-like heat loads.•Two measurement methods are shown: in-situ observation of the W surface…”
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Spectroscopic study of hydrogen reflection at modified tungsten surface by Doi, Kenta, Lee, Heun Tae, Tanaka, Nozomi, Yamaoka, Hitoshi, Ueda, Yoshio, Wada, Motoi

“…•Hα emission of H atoms reflected from a fuzzy W in a plasma was measured.•The fuzz structure was removed due to the continuous H-plasma bombardment.•The…”
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Ethanol gas sensing performance of high-dimensional fuzz metal oxide nanostructure by Ibano, Kenzo, Kimura, Yoshihiro, Sugahara, Tohru, Lee, Heun Tae, Ueda, Yoshio

“…Gas sensing ability of the He plasma induced fiber-like nanostructure, so-called fuzz structure, was firstly examined. A thin Mo layer deposited on a quartz…”
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Lingual nerve injury due to wisdom tooth germ extraction repaired using a conduit for peripheral nerve regeneration: A preliminary case report by Toyodome, Soichiro, Matsunaga, Kazuhide, Iwamoto, Noriko, Suzuki, Seiya, Nemoto, Naoto, Ueda, Yoshio, Nagata, Tetsuji

“…While lingual nerve injury is a well-recognized complication of impacted mandibular wisdom tooth extraction, there are no studies on lingual nerve injury…”
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An action plan of Japan toward development of demo reactor by Okano, Kunihiko, Kasada, Ryuta, Ikebe, Yasushi, Ishii, Yasutomo, Oba, Kyoko, Kashiwagi, Mieko, Sakamoto, Ryuichi, Sawa, Naoki, Takenaga, Hidenobu, Nishimura, Arata, Fukuie, Masaru, Fujioka, Shinsuke, Ueda, Yoshio, Akiyama, Tsuyoshi

“…An action plan presented here is the plan toward construction of a Demo reactor in Japan. A Task-force for development strategy of Tokamak Demo Reactors was…”
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Characteristics of tungsten and carbon dusts in JT-60U and evaluation of hydrogen isotope retention by Ashikawa, Naoko, Asakura, Nobuyuki, Fukumoto, Masakatsu, Hayashi, Takao, Ueda, Yoshio, Muroga, Takeo

“…Dust was collected after the installation of tungsten (W)-coated tiles in the outer divertor of the P-8 section in JT-60U (2010). Dusts containing tungsten…”
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Modeling of hysteresis characteristics of the piezoelectric actuator using the bouc-wen model by Ken'ichi TATEBATAKE, Yoshio UEDA, Dongbo LIU, Fumitake FUJII

“…This paper discloses the development of the improved Bouc-Wen model which captures the behavior of the rate dependent hysteresis of a piezoelectric actuator…”
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Optical transmittance investigation of 1-keV ion-irradiated sapphire crystals as potential VUV to NIR window materials of fusion reactors by Iwano, Keisuke, Yamanoi, Kohei, Iwasa, Yuki, Mori, Kazuyuki, Minami, Yuki, Arita, Ren, Yamanaka, Takuma, Fukuda, Kazuhito, Empizo, Melvin John F., Takano, Keisuke, Shimizu, Toshihiko, Nakajima, Makoto, Yoshimura, Masashi, Sarukura, Nobuhiko, Norimatsu, Takayoshi, Hangyo, Masanori, Azechi, Hiroshi, Singidas, Bess G., Sarmago, Roland V., Oya, Makoto, Ueda, Yoshio

“…We investigate the optical transmittances of ion-irradiated sapphire crystals as potential vacuum ultraviolet (VUV) to near-infrared (NIR) window materials of…”
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Identification of hysteresis using adaptive Preisach model by Yoshio UEDA, Fumitake FUJII, Dongbo LIU

“…This paper presents a novel numerical model of the rate-dependent hysteresis. The model has the structure of adaptive linear combiner (ALC) where the states of…”
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Microstructures and Deuterium-Retention Behavior of Tungsten Exposed to D+(He and/or Be) Mixture Plasmas by Miyamoto, Mitsutaka, Nishijima, Daisuke, Baldwin, Matthew J., Doerner, Russell P., Ueda, Yoshio, Sagara, Akio, Kurishita, Hiroaki

“…ITER-relevant mixed species (D, He, Be) plasma exposure experiments on microstructural changes and their impacts on D retention behavior in W are reviewed. It…”
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Beryllium erosion induced by transient heat loads and subsequent reactions in a deuterium plasma by Kajita, Shin, Nishijima, Daisuke, Doerner, Russ, Umstadter, Karl, Yu, Jonathan, Ohno, Noriyasu, Ueda, Yoshio

“…► Pulsed laser irradiation to a beryllium target has been performed under steady-state deuterium (D) plasma exposure. ► Emission intensities from Be atoms and…”
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Paleomagnetism of seamounts in the West Philippine Sea as inferred from correlation analysis of magnetic anomalies by UEDA, Yoshio

“…Magnetization vectors of seamounts and edifices in the West Philippine Sea were determined with a direct searching method in the space domain using the…”
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