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Dosimetry and signal correction by displacement damage dose method using superior radiation-resistance InGaP solar cell

Okuno, Yasuki; Kitamura, Akane; Iwamoto, Yosuke   ; Okubo, Nariaki   ; Akiyoshi, Masafumi*; Imaizumi, Mitsuru*; Shibata, Yuichi*; Yamaguchi, Masafumi*

In the vicinity of the reactor core of TEPCO's Fukushima Daiichi Nuclear Power Plant, it is a very high radiation environment due to the accident. In order to investigate the conditions at the inside of the reactor pressure vessele and the building, the current radiation measuring device has limitations in performance and function. Therefore, a simple and highly radiation-tolerant monitor, which can be used under high radiation dose environment, is required. Solar cells are known to be able to measure doses easily. However, the problem is that signals of dose are degraded by radiation damage. In this study, a measurement method of electric current induced by radiaiton and a signal compensation technique applied by a displacement damage prediction model will be reported by using an InGaP solar cell with a high radiation resistance.

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