[3H01-05] 分析技術

[3H04] Spectroscopic analysis of radioactive strontium with high isotopic selectivity

(2)Multi-step RIS of ⁹⁰Sr with IF-ECDL and characteristics evaluation

*DONGUK CHEON¹, YOSHIHIRO IWATA¹, MASABUMI MIYABE², SHUICHI HASEGAWA¹ (1. University of Tokyo, NEM Dep., 2. JAEA)

キーワード：Strontium, Resonance ionization, Isotopic selectivity, Interference filter, Etalon

Resonance ionization spectroscopic (RIS) analysis is one of alternative technique to enhance the isotope selectivity such as strontium 90 (⁹⁰Sr). On this series of report, firstly, we present the development of RIS system with interference filtered external cavity diode laser (IF-ECDL; 689 nm). Secondly, beam characteristics of IF-ECDL with alternatively developed etalon system. And then finally, the results of multi-step RIS (689 nm – 487 nm – 487 nm) of ⁹⁰Sr are reported.