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化合物太陽電池を応用した電源レス・高耐放射線性の線量計開発

Development of highly radiation-resistant dosimeters that do not require external power source by the application of compound solar cells

奥野 泰希; 今泉 充*; 岡本 保*; 小林 知洋*; 秋吉 優史*; 後藤 康仁*

Okuno, Yasuki; Imaizumi, Mitsuru*; Okamoto, Tamotsu*; Kobayashi, Tomohiro*; Akiyoshi, Masafumi*; Goto, Yasuhito*

福島第一原子力発電所において、炉心付近の高レベル放射線環境を測定する必要があるが、既存製品である電離箱では、「寸法」,「感度」,「使用電源」の制限によって、使用できる場所が限られているため、現状、十分な線量率分布や、デブリの位置の推定が十分でない。そのため、我々は、電離箱に変わる電源レスの線量計として太陽電池型線量計の開発を進めてきた。本発表では、太陽電池を応用し太陽電池自己誘起電流型線量計に関して、これまで解明してきた電流挙動, 劣化挙動, 温度特性等を踏まえて、社会実装に向けた開発に関して報告する。

The Fukushima Daiichi Nuclear Power Station needs to measure the high-level radiation environment near the core, but the ionization chamber, which is the existing product, has limited space where it can be used due to "size", "sensitivity", and "power supply". At present, the information of dose distribution and the estimation of debris position are not sufficiently obtained. Therefore, we have been developing a solar cell type radiation dosimeter as a powerless dosimeter instead of an ionization chamber. In this presentation, we will report on the development of a solar cell self-induced current dosimeter based on the current behavior, degradation behavior, temperature characteristics, etc. that have been elucidated so far.

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