Online ISSN: 1884-4111 Print ISSN: 0033-8303
Radioisotopes 67(6): 299-308 (2018)

連載講座Serial Lecture

超重元素の質量測定革新的質量分光器MRTOF-MSによるMass Measurements of Super-Heavy-Elementsby A Novel Mass Spectrograph MRTOF-MS

1高エネルギー加速器研究機構素粒子原子核研究所和光原子核科学センターWako Nuclear Science Center, Institute of Particle and Nuclear Studies, KEK RIKEN Campus ◇ 351–0198 埼玉県和光市広沢2–1理化学研究所内 ◇ 2–1 Hirosawa, Wako, Saitama Pref. 351–0198, Japan

2理化学研究所仁科加速器研究センターNishina Center for Acclelerator-based Science, RIKEN ◇ 351–0198 埼玉県和光市広沢2–1 ◇ 2–1 Hirosawa, Wako, Saitama Pref. 351–0198, Japan

発行日:2018年6月15日Published: June 15, 2018


A project for precision mass measurements of super-heavy elements including newly named nihonium is in progress. A gas cell for efficient collection of fusion reaction product into an ion-trap and a fast, precise and accurate mass spectrograph, MRTOF-MS, play important role for the SHE-Mass project. In the first stage of the project, the masses of more than 80 isotopes including seven isotopes of Z≧100 elements were measured.

Key words: mass measurement; MRTOF (multi-reflection time-of-flight) mass spectrograph; super heavy element; ion trap

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