Experiment on the synthesis of element 113 in the reaction 209Bi(70Zn, N)278113

The convincing candidate event of the isotope of the 113th element, 278113, and its daughter nuclei, 274111 and 270Mt, were observed, for the first time, in the 209Bi+70Zn reaction at a beam energy of 349.0 MeV with a total dose of 1.7×1019. Alpha decay energies and decay times of the candidates, 27...

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Bibliographic Details
Published in:Journal of the Physical Society of Japan 2004-10, Vol.73 (10), p.2593-2596
Main Authors: MORITA, Kosuke, MORIMOTO, Kouji, KUDO, Hisaaki, OHNISHI, Tetsuya, OZAWA, Akira, SUDA, Toshimi, SUEKI, Keisuke, XU, Hushan, YAMAGUCHI, Takayuki, YONEDA, Akira, YOSHIDA, Atsushi, ZHAO, Yuliang, KAJI, Daiya, AKIYAMA, Takahiro, GOTO, Sin-Ichi, HABA, Hiromitsu, IDEGUCHI, Eiji, KANUNGO, Rituparna, KATORI, Kenji, KOURA, Hiroyuki
Format: Article
Language:English
Subjects:
a decay
Exact sciences and technology
Nuclear physics
Physics
Radioactive decay and in-beam spectroscopy
β decay
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Summary:The convincing candidate event of the isotope of the 113th element, 278113, and its daughter nuclei, 274111 and 270Mt, were observed, for the first time, in the 209Bi+70Zn reaction at a beam energy of 349.0 MeV with a total dose of 1.7×1019. Alpha decay energies and decay times of the candidates, 278113, 274111, and 270Mt, were (11.68±0.04 MeV, 0.344 ms), (11.15±0.07 MeV, 9.26 ms), and (10.03±0.07 MeV, 7.16 ms), respectively. The production cross section of the isotope was deduced to be 55+150-45 fb (10-39 cm2).
ISSN:0031-9015
1347-4073