Two-dimensional elemental mapping of simulated fuel debris using laser induced breakdown spectroscopy

Batsaikhan, M.; Karino, Takahiro ; Shibata, Takuya  ; Akaoka, Katsuaki ; Wakaida, Ikuo  

Severe accident at Fukushima Daiichi Nuclear Power Station (1F) of Tokyo Electric Power Company Holdings (TEPCO) occurred after strong earthquake and massive tsunami. Since after the accident, many efforts to decommissioning of the 1F moving forward steadily and safely. It is important to realize a measurement technique that can distinguish fuel debris from other materials. In the present study, we focused on Laser Induced Breakdown Spectroscopy (LIBS) which is considered as a promising remote, in-situ and radiation tolerance technique for fuel debris inspection of the 1F. Although the LIBS is a point measurement technique, it has been used as elemental surface mapping technique in many fields, because it allows user to realize fast spatial scanning without any sample preparation. In this presentation, measurement result of 2D elemental mapping by LIBS on simulated fuel debris sample under atmospheric pressure and without radiation environment will be discussed.