Development of laser remote analysis for nuclear fuel materials, 1; Laser induced breakdown spectroscopy and laser ablation resonance spectroscopy, Introduction

Wakaida, Ikuo  ; Akaoka, Katsuaki ; Oba, Masaki ; Miyabe, Masabumi   ; Maruyama, Yoichiro; Niki, Hideaki*

Direct and remote analysis of impurity and isotope ratio in nuclear fuel materials is developing without any chemical process by laser induced breakdown spectroscopy and laser ablation resonance spectroscopy. The purpose of this study and some recent results are discussed. In the breakdown spectroscopy, the basic process of plasma emission and the effects of the double pulse injection will be reported. In the impurity measurements of Cu in the matrix of Gadlinium, the linearity of the atomic emission to the impurity density was confirmed and the detection limit lower than 100ppm was obtained. In the resonance spectroscopy, the high precision tunable laser system for the resonance spectroscopy was developed and odd isotopes of Gadlinium were separately detected by laser ablation resonance absorption spectroscopy.