[2J10-15] Decommissioning Technology for Fukushima

[2J13] Analysis of particles generated by laser processing and development of their nuclide identification methodology (4)

(2)Development of high-resolution remote isotopic analysis

*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:Isotopic Analysis, Laser-induced fluorescence spectroscopy, Doppler-free spectroscopy, Remote Analysis

We are developing an analytical technique in which the samples are ablated to generate laser plasma and the plasma are irradiated by resonance laser beam to observe resonance fluorescence so as to measure the isotopic composition remotely and non-contactly. Normally the wavelength resolution is limited by Doppler width of room temperature; however in the present study we have developed high-resolution technique by adopting two-color two-step Doppler-free spectroscopic technique.