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Development of an atomic beam apparatus for chemistry of the heaviest elements

超重元素の化学的研究のための原子ビーム装置の開発

富塚 知博*; 床井 健運*; 佐藤 哲也  ; 浅井 雅人 ; Chiera, N. M.; 後藤 真一*; 長 明彦 ; 豊嶋 厚史; 塚田 和明 ; 永目 諭一郎 

Tomitsuka, Tomohiro*; Tokoi, Katsuyuki*; Sato, Tetsuya; Asai, Masato; Chiera, N. M.; Goto, Shinichi*; Osa, Akihiko; Toyoshima, Atsushi; Tsukada, Kazuaki; Nagame, Yuichiro

We plan to directly determine the ground-state configuration of Lr by applying the Stern-Gerlach technique of magnetic deflection of atomic beams. Here, a well-collimated atomic beam passes through an inhomogeneous magnetic field that splits the beam into (2J + 1) components; J is the total electronic angular momentum of the atom. From the number of beam split components, the ground-state configuration of the Lr atom can be determined unambiguously. We have just started the development of an apparatus for effective extraction of the atomic Lr beam by exploiting a small cavity type atomic beam source that can be heated by electron bombardment. In the contribution, we present the status and achievement, and future prospect of this program.

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