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Development of a gas-jet coupled surface ion source of ISOL for measurement of the first ionization potential of Lr, 2

Kaneya, Yusuke*; Sato, Tetsuya; Sonoda, Nozomi; Asai, Masato; Tsukada, Kazuaki; Toyoshima, Atsushi; Oe, Kazuhiro; Miyashita, Sunao; Nagame, Yuichiro; Sch$"a$del, M.; Osa, Akihiko; Ichikawa, Shinichi; Stora, T.*; Kratz, J. V.*

In order to determine the first ionization energy of lawrencium (Lr, ${it Z}$ = 103), we have developed a new surface ionization ion source coupled to a gas-jet transport system in ISOL (Isotopes Separator On-Line) at the JAEA tandem accelerator facility. On-line experiments with short-lived lanthanide isotopes using the new ion-source were performed. It would be confirmed that the ionization energy of lanthanide which boiling point is up to 3000$$^{circ}$$C can be determined.

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