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Production of $$^{265}$$Sg via the $$^{248}$$Cm($$^{22}$$Ne,5$$n$$)$$^{265}$$Sg reaction

Haba, Hiromitsu*; Oe, Kazuhiro*; Ozeki, Kazutaka*; Kasamatsu, Yoshitaka*; Kaji, Daiya*; Kikunaga, Hidetoshi*; Kudo, Hisaaki*; Kudo, Yuki*; Komori, Yukiko*; Sato, Nozomi; Shinohara, Atsushi*; Sumita, Takayuki*; Tsukada, Kazuaki  ; Morita, Kosuke*; Morimoto, Koji*; Yoneda, Akira*

RIKEN group has investigated the performance of the system using an isotope of element 106, $$^{265}$$Sg, produced in the $$^{248}$$Cm($$^{22}$$Ne,5$$n$$) reaction. Alpha-particles of $$^{265}$$Sg separated with a GAs-filled Recoil Ion Separator (GARIS) and extracted to a chemistry laboratory were successfully identified with a rotating wheel system for $$alpha$$-spectrometry under low background conditions. As a result, two isomeric states in $$^{265}$$Sg, $$^{265a}$$Sg ($$alpha$$-particle energy $$E_{alpha} = 8.84$$ MeV, half-life $$T_{1/2} = 6.7$$ s) and $$^{265b}$$Sg ($$E_{alpha} = 8.69$$ MeV, $$T_{1/2} = 15$$ s), were identified. The cross sections for the $$^{248}$$Cm($$^{22}$$Ne,5$$n$$) reactions at 118 MeV were roughly evaluated to be 200 pb for $$^{265a}$$Sg and 170 pb for $$^{265b}$$Sg.

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Japanese

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2010日本放射化学会年会・第54回放射化学討論会

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2010/09

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吹田

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日本

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no keyword

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Press Release

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Article of JAEA R&D Review

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- Accesses

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