The First successful ionization of Lr (=103) by a surface ionization technique

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

We have newly developed a surface ionization ion-source coupled to a He/CdI gas-jet transport system for JAEA-ISOL in order to determine the first ionization potential of the heaviest actinide element, lawrencium (, =103). In this work, we successfully ionized $^{256}$ Lr produced in the reaction of $^{249}$ Cf and $^{11}$ B with the ionization efficiency of about 37% with the present apparatus. And we evaluated the first ionization potential of Lr from a correlation between effective ionization potentials and ionization efficiencies of short-lived lanthanide isotopes for the first time.

Language	:	English
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Meeting title	:	9th International Conference on the Chemistry and Physics of the Actinide Elements (ACTINIDES 2013)
Held date	:	2013/07
Location (city)	:	Karlsruhe
Location (country)	:	Germany
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Keywords	:	no keyword
Research Facility	:	タンデム加速器
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Registration No. : BB20131206
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