[3H05-10] Technologies for Dismantling, Decontamination and Evaluation

[3H05] Laser spectrosopy for atoms and fine particles generated during laser cutting

*Masabumi Miyabe¹, Tomonori Yamada^1,2, Takuya Shibata¹, Chikara Ito¹, Hiroyuki Daido³, Shuichi Hasegawa⁴ (1. Japan Atomic Energy Agency, 2. The Wakasawan Energy Research Center, 3. Institute for Laser Technology, 4. The University of Tokyo)

Keywords:laser ablation, resonance absorption spectroscopy, fragmentation, fine particle, LIBS

It is expected that laser cutting process will be used in decommissioning for nuclear facilities, but there are concerns about environmental pollution due to fume generated during laser cutting process. To clarify the formation mechanism and characteristics of atoms and fine particles in the fume and to rapidly analyze the nuclide composition, we conducted atomic emission spectroscopy associated with laser ablation and an experiment to decompose the fine particles by optical fragmentation process.