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Report No.
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Advanced study on remote and in-situ elemental analysis of molten fuel debris in damaged core by innovative optical spectroscopy

Wakaida, Ikuo  ; Oba, Hironori* ; Ikeda, Yuji*; Sakka, Tetsuo*; Taira, Takunori*

Radiation resistant optical fiber based laser induced breakdown spectroscopy (Fiber LIBS) is developed for in-core and in-situ elemental analysis of debris and its activity is performed under severe environmental conditions such as high radiation field of about 10kGy/h and under water. Long pulse laser, microwave assisted LIBS for more high sensitivity and micro-chip Laser will be also introduced for In-Core use optical source.

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