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Featured researches published by Isamu Sone.


Fusion Science and Technology | 2004

JT-60U plasma current measurement by an optical current transformer

T. Arai; Tomokazu Nishiyama; J. Yagyu; S. Kasai; Isamu Sone; Mitsushi Abe; N. Miya

Abstract In a nuclear fusion experiment device, a plasma discharge is to be sustained for a long time in steady state operation. In such a device an electromagnetic sensor that has a signal integrator to measure direct currents will cause a technical problem of zero point drift on signals. Therefore, the detection device using new technology for direct current measurement, optical current transformer (optical CT), was developed. The device has an optical fiber specified for850 and 1550nm (wavelength) were manufactured, and was applied to current measurement in JT-60U experiments. A gamma ray irradiation examination was also done to the optical CT.


Archive | 1984

SF6 Gas arc extinguishing electric apparatus and process for producing the same

Motoo Yamaguchi; Isamu Sone; Kunio Hirasawa; Yoshio Yoshioka; Akio Nishikawa; Hiroshi Suzuki; Mikio Sato; Masao Hosokawa


Archive | 1982

SF6 gas insulating electric apparatus and process for producing the same

Motoo Yamaguchi; Isamu Sone; Kunio Hirasawa; Yoshio Yoshioka; Akio Nishikawa; Hiroshi Suzuki; Mikio Sato; Masao Hosokawa


Archive | 1981

SF6 GAS INSULATING ELECTRIC DEVICE AND METHOD OF PRODUCING SAME

Motoo Yamaguchi; Isamu Sone; Kunio Hirasawa; Yoshio Yoshioka; Akio Nishikawa; Hiroshi Suzuki; Mikio Satou; Masao Hosokawa


Archive | 2002

Optical-voltage sensor

Isamu Sone; Masaru Higaki


Optical Fiber Sensors (1996), paper We1S2 | 1996

Development and Applications of Bulk-optic Current Sensors

Tadashi Sato; Isamu Sone; Hiroshi Hayashida; Yoshiaki Nakagama


Archive | 1992

Light-applied current detector

Masaru Higaki; Satoshi Kuzusaka; Etsunori Mori; Hiroto Nakagawa; Yoshinori Nishi; Makoto Shimizu; Isamu Sone; Genji Takahashi; 博人 中川; 曽根 勇; 悦紀 森; 勝 檜垣; 誠 清水; 美憲 西; 源治 高橋


Ieej Transactions on Power and Energy | 1991

Study on Carbon Dioxide Evolution Phenomena at Start-up Processes of Phosphoric Acid Fuel Cells

Yasuyuki Tsutsumi; Masanori Yamaguchi; Isamu Sone; Yositaka Nanba


Ieej Transactions on Power and Energy | 1991

Local Overheat Phenomena by Catalyst Attached to Components of Phosphoric Acid Fuel Cells Stack

Yasuyuki Tsutsumi; Masanori Yamaguchi; Isamu Sone; Yositaka Nanba


Ieej Transactions on Fundamentals and Materials | 1999

Modulation Depth Caused by Pockels Effect in two Bi12SiO20 Crystals

Masaru Higaki; Shizuo Yamaguchi; Kunio Fujii; Isamu Sone

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