Development of cesium isotope separation based on the laser photochemical reaction

Tamura, Koji*

Laser isotope separation of cesium (Cs) was studied based on laser photochemical reaction and two-photon excitation scheme using a narrow line width Ti:sapphire laser to reduce long-term radioactive toxicity of long lived fission product. By the resonant laser irradiation to Cs atoms in hydrogen gas, cesium hydride (CsH) fine particles were observed, and the formation was confirmed by calculations using rate equations. The process is promising for efficient Cs isotope separation.