[2J10-15] Decommissioning Technology for Fukushima

[2J15] Analysis of particles generated by laser processing and development of their nuclide identification methodology (4)

(4)Progress in a Spectroscopic Technique of Laser Based Analysis and Nuclide Identification of Fine Particle Debris

*Stephen Robert Wells¹, Yusuke Maruyama¹, Yusuke Watanabe¹, Hiroyuki Daido², Tomonori Yamada^3,4, Chikara Ito³, Masabumi Miyabe³, Takuya Shibata³, Shuichi Hasegawa¹ (1. UTokyo, 2. Inst. Laser Tech., 3. JAEA, 4. WERC)

Keywords:Fine particles, Laser cutting, Material analysis, Plasma spectroscopy

Laser cutting/processing in nuclear decommissioning is an increasingly useful technique, allowing access to tight spaces, controlled cutting width, among others. Fine particles are produced as cutting waste, presenting a possible hazard to health, but may also be analysed to investigate the cutting material contents. Here, progress on a diode laser system for absorption spectroscopy for fine particle analysis is described.