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Report No.

Development of surface ionization method for determination of the first ionization potentials of heavy actinides

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.

We have developed a surface ionization ion-source as part of the JAEA-ISOL that is coupled to a He/CdI$$_{2}$$ gas-jet transport system to determine the first ionization potential (IP) of heavy actinides. Ionization efficiencies of various short-lived lanthanide isotopes produced in the nuclear reactions were measured with the present system. Obtained results demonstrate that the developed ion-source could be applicable to the measurement of the IP of heavy actinides.



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