講演情報
[11p-E207-6]Feasibility of Determining Rare Hydrogen Isotopes using Two-Color Cavity-Ring-Down Spectroscopy
〇(M2)David Raphael Ternes1,2, Ryohei Terabayashi1, Hideki Tomita1 (1.Nagoya Univ., 2.University of Mainz)
キーワード：
Cavity-Ringdown-Spectroscopy、Tritium Detection、Laser Spectroscopy
Our research aims to detect tritium, the radioactive isotope of hydrogen, by laser spectroscopy. Tritiated water can be released into the environment during nuclear accidents, and its monitoring is also becoming increasingly important for nuclear fusion research and future fusion reactors. Conventional tritium detection by liquid scintillation counting is time-consuming, partly because chemical separation is required to reduce backgrounds from other radionuclides. Cavity ring-down spectroscopy (CRDS) is a promising method for rapid and potentially portable tritium analysis. In CRDS, a laser is injected into a cavity with highly reflective mirrors, increasing the effective optical path length to the kilometer scale and enabling weak molecular absorption to be detected. This study investigates the feasibility of tritiated water detection by two-color CRDS. As an initial step toward HTO analysis, a possible two-color excitation scheme for HDO was simulated and evaluated.