Technology development for abbreviated (in-situ) analysis of fuel debris, 4; Demonstration of fiber-delivered LIBS for application to decommissioning sites, 3; Effect of long and short pulse laser double irradiation on submerged samples

Wakaida, Ikuo* ; Oba, Hironori*  ; Deguchi, Yoshihiro*

We have developed a fiber-delivered laser-induced breakdown spectroscopy (fiber-LIBS) system for the remote analysis of nuclear fuel materials inside and outside the reactor in the decommissioning of Fukushima Daiichi nuclear power station. We proposed and demonstrated a method to simultaneously irradiate samples with long and short pulses of laser light to analyze samples in submerged, wet, and surface water flow environments.