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Journal Articles

Generation of radioisotopes with accelerator neutrons by deuterons

Nagai, Yasuki; Hashimoto, Kazuyuki; Hatsukawa, Yuichi; Saeki, Hideya; Motoishi, Shoji; Sonoda, Nozomi; Kawabata, Masako; Harada, Hideo; Kin, Tadahiro*; Tsukada, Kazuaki; et al.

Journal of the Physical Society of Japan, 82(6), p.064201_1 - 064201_7, 2013/06

 Times Cited Count:33 Percentile:14.95(Physics, Multidisciplinary)

Oral presentation

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.; et al.

no journal, , 

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.

Oral presentation

Development of a surface-ionization type ion-source at the JAEA-ISOL set-up for a measurement of the first ionization potential of Lr (Z=103)

Sato, Tetsuya; Sonoda, Nozomi; Kaneya, Yusuke*; Asai, Masato; Tsukada, Kazuaki; Toyoshima, Atsushi; Oe, Kazuhiro; Miyashita, Sunao; Osa, Akihiko; Ichikawa, Shinichi; et al.

no journal, , 

In order to determine the first ionization potential of lawrencium (Lr, Z=103), we have developed an appropriate surface-ionization type ion source as a part of the JAEA-ISOL setup, which is coupled to a He/CdI$$_2$$ gas-jet transport system. The new ion source is an improved version based on our previously used ion source, which already had a good ionization efficiencies for lanthanide. To achieve higher ionization efficiencies of low volatility elements like Lr, an additional filament was newly installed. We report, here, on the development and performance of our new gas-jet coupled surface-ionization ion source, and on the first successful ionization and mass separation of 27-s $$^{256}$$Lr produced in the $$^{249}$$Cf + $$^{11}$$B reaction.

Oral presentation

Measurement of the first ionization potential of Lr by surface ionization method

Sato, Tetsuya; Kaneya, Yusuke*; Sonoda, Nozomi; Asai, Masato; Tsukada, Kazuaki; Toyoshima, Atsushi; Oe, Kazuhiro; Miyashita, Sunao; Nagame, Yuichiro; Sch$"a$del, M.; et al.

no journal, , 

In order to determine the first ionization potential (IP) of lawrencium (Lr, Z=103), we have developed a surface ionization type ion-source coupled to a He/CdI$$_2$$ gas-jet transport system for the JAEA-ISOL. We measured ionization efficiencies of $$^{256}$$Lr and various short-lived lanthanide isotopes by applying the ion-source. We successfully ionized and mass-separated for the first time $$^{256}$$Lr ions. From a correlation between the IPs and ionization efficiencies of the short-lived lanthanide isotopes, we estimated the IP of Lr in this work.

Oral presentation

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.; et al.

no journal, , 

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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