Development of surface ionization ion-source for determination of the first ionization potential of heavy actinides

Kaneya, Yusuke; Sato, Tetsuya   ; Asai, Masato  ; Tsukada, Kazuaki  ; Toyoshima, Atsushi; Miyashita, Sunao*; Nagame, Yuichiro ; Schdel, M.; Sato, Nozomi; Oe, Kazuhiro*; 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 gas-jet transport system to determine the first ionization potential (IP) of heavy actinides. Separation efficiencies of various short-lived lanthanide isotopes as homologs of actinides that were produced in nuclear reactions were measured with the present system. Obtained results demonstrate that the developed ion-source would be applicable to a measurement of the IP of heavy actinides.