Development of method for rare isotope spectroscopic analysis using lasers

2017 Fiscal Year Final Research Report

• Project/Area Number: 15H04240
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Nuclear engineering
• Research Institution: The University of Tokyo
• Principal Investigator: Hasegawa Shuichi 東京大学, 大学院工学系研究科(工学部), 教授 (90262047)
• Co-Investigator(Kenkyū-buntansha): 宮部 昌文 国立研究開発法人日本原子力研究開発機構, 福島研究開発部門 福島研究開発拠点 廃炉国際共同研究センター, 研究主幹 (20354863)
• Project Period (FY): 2015-04-01 – 2018-03-31
• Keywords: 同位体分析 / レーザー / イオン

Outline of Final Research Achievements

This research aims at establishment of isotope selective manipulation technique and spectroscopy of hyperfine structure of 41Ca+ to realize the trace amount isotopic analysis method. Using 43Ca+ isotope with the same nuclear spin as 41Ca+, we established a laser cooling cycle considering hyperfine structure and succeeded in observing 43Ca+ individual ions by efficient laser cooling. Furthermore, with the aim of improving the isotope selective manipulation technique, we developed a new light source necessary for multistep resonance ionization of neutral calcium atoms, and realized three - step resonant photoionization, which resulted in observation of isotope shifts.

Free Research Field

レーザー分光分析