[3B05-09] Investigation of Radioactive Contamination

[3B09] Development of Sr-90 analytical system based on highly sensitive laser absorption spectroscopy utilizing molecular isotope shifts (2)

*Ryohei Terabayashi¹, Kaoru Inoue¹, Masahiro Sakurai¹, Masabumi Miyabe², Shuichi Hasegawa¹ (1. UTokyo, 2. JAEA)

Keywords:Strontium-90, Laser spectroscopy, Cavity ringdown spectroscopy, Trace analysis, Molecular spectroscopy

We have proposed a radionuclide nuclide analysis based on cavity ring-down spectroscopy (CRDS) targeting absorption lines of molecules containing radionuclides. Particularly, we focused on the near-infrared absorption transitions of SrO molecules for Sr-90 detection. Experimental observations of vibrational and rotational transitions of SrO molecules by emission or absorption spectroscopy will be reported.