Zobrazeno 1 - 10
of 27
pro vyhledávání: '"Tsutomu Sagawa"'
Publikováno v:
Fusion Engineering and Design. :179-183
Oxyhydrate (OH) doped and fluorine (F) doped fused-silica core optical fibers were irradiated in a fission reactor at 370–380 K with a fast neutron flux of about 5×1016n/m2s and a gamma-ray dose rate of about 500 Gy/s for about 24 days. Oxyhydrate
Autor:
R. Snider, Takeo Nishitani, M Fukao, Satoshi Kasai, H. Matsuo, J.D. Broesch, Tatsuo Shikama, K. Young, Tsutomu Sagawa, S. Yamamoto, Minoru Narui
Publikováno v:
Fusion Engineering and Design. :171-177
Magnetic probes for plasma diagnostics in the International Thermonuclear Experimental Reactor (ITER) were developed and tested in a fission reactor, the Japan Materials Testing Reactor. Performance of coils made of mineral insulating cables could be
Publikováno v:
Journal of Nuclear Materials. :1893-1896
For applying to optical diagnostics for fusion reactor, two types of radiation-resistant optical fibers have been fabricated and their optical phenomena were examined in the JMTR. The optical absorption due to radiation-induced defects and formation
Development of rig for systematic irradiation tests of fusion reactor materials in a fission reactor
Publikováno v:
Journal of Nuclear Materials. :372-377
Acquisition of systematic irradiation data are essential for understanding fundamental processes of irradiation effects and for establishment of a reliable database for irradiation effects in fusion reactor materials. It will take several years with
Publikováno v:
Fusion Engineering and Design. 41:201-205
Several kinds of optical diagnostics are planned in a fusion reactor. Complicated optical systems such as periscopes are thought to be primary candidates for optical measurements, especially for visible wavelengths. However, optical fibers have sever
Publikováno v:
Journal of Nuclear Materials. 253:180-189
Pure, OH-doped and F-doped silica core optical fibers were irradiated in a fission reactor at 400 ± 10 K using an electric heater at a reactor power greater than 10 MW (20% of the full power). The temperature was not controlled well at the early sta
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 122:650-656
A radiation induced electromotive force (RIEMF) was measured in mineral insulated cables (MI-cables) under fission reactor irradiation. A negative electromotive force of about 10 V was generated in the center lead by the reactor irradiation. The RIEM
Publikováno v:
Journal of Nuclear Materials. 228:117-128
An experiment to measure radiation-induced electrical degradation (RIED) in a sapphire sample and in three MgO-insulated cables was conducted at the JMTR light water reactor. The materials were irradiated at about 260°C to a fluence of 3 × 1024 n/m
Publikováno v:
Journal of Nuclear Materials. 225:324-327
The effects of irradiation on the performance of optical fibers with silica core were examined during irradiation in a fission reactor, JMTR. The fibers performed well in terms of their radiation characteristics up to the fast neutron fluence of 1.06
Autor:
Hideo Kayano, Kazuo Sanada, Toshimasa Uramoto, Tsutomu Sagawa, Minora Narui, Naoki Shamoto, Tsunemi Kakuta, Tatsuo Shikama
Publikováno v:
Journal of Nuclear Materials. :421-425
Two kinds of optical fibers were irradiated in a fission reactor, JMTR (Japan Materials Testing Reactor), up to a 1.55 × 10 19 n/cm 2 fast neutron fluence and a 3.3 × 10 9 Gy ionizing dose at 370 K. Optical transmission spectra were measured in the