Experiment on the Synthesis of Element 113 in the Reaction 209Bi(70Zn,n)278113

Kosuke Morita; Kouji Morimoto; Daiya Kaji; Takahiro Akiyama; Sin-ichi Goto; Hiromitsu Haba; Eiji Ideguchi; Rituparna Kanungo; Kenji Katori; Hiroyuki Koura; Hisaaki Kudo; Tetsuya Ohnishi; Akira Ozawa; Toshimi Suda; Keisuke Sueki; HuShan Xu; Takayuki Yamaguchi; Akira Yoneda; Atsushi Yoshida; YuLiang Zhao

doi:10.1143/jpsj.73.2593

Experiment on the Synthesis of Element 113 in the Reaction ²⁰⁹Bi(⁷⁰Zn,n)²⁷⁸113

Kosuke Morita, Kouji Morimoto, Daiya Kaji, Takahiro Akiyama, Sin-ichi Goto, Hiromitsu Haba, Eiji Ideguchi, Rituparna Kanungo, Kenji Katori, Hiroyuki Koura, Hisaaki Kudo, Tetsuya Ohnishi, Akira Ozawa, Toshimi Suda, Keisuke Sueki, HuShan Xu, Takayuki Yamaguchi, Akira Yoneda, Atsushi Yoshida, YuLiang Zhao

著者情報

Kosuke Morita
RIKEN (The Institute of Physical and Chemical Research)
Kouji Morimoto
RIKEN (The Institute of Physical and Chemical Research)
Daiya Kaji
RIKEN (The Institute of Physical and Chemical Research)
Takahiro Akiyama
RIKEN (The Institute of Physical and Chemical Research)
Department of Physics, Saitama University
Sin-ichi Goto
Center for Instrumental Analysis, Niigata University
Hiromitsu Haba
RIKEN (The Institute of Physical and Chemical Research)
Eiji Ideguchi
Center for Nuclear Study, University of Tokyo Wako Branch
Rituparna Kanungo
RIKEN (The Institute of Physical and Chemical Research)
Kenji Katori
RIKEN (The Institute of Physical and Chemical Research)
Hiroyuki Koura
Advanced Science Research Center, Japan Atomic Energy Research Institute
Hisaaki Kudo
Department of Chemistry, Niigata University
Tetsuya Ohnishi
RIKEN (The Institute of Physical and Chemical Research)
Akira Ozawa
University of Tsukuba
Toshimi Suda
RIKEN (The Institute of Physical and Chemical Research)
Keisuke Sueki
University of Tsukuba
HuShan Xu
Institute of Modern Physics, Chinese Academy of Science
Takayuki Yamaguchi
Department of Physics, Saitama University
Akira Yoneda
RIKEN (The Institute of Physical and Chemical Research)
Atsushi Yoshida
RIKEN (The Institute of Physical and Chemical Research)
YuLiang Zhao
Institute of High Energy Physics, Chinese Academy of Science

キーワード: new element ²⁷⁸113, new isotopes ²⁷⁴111 and ²⁷⁰Mt, gas-filled recoil separator

ジャーナル認証あり

2004 年 73 巻 10 号 p. 2593-2596

DOI https://doi.org/10.1143/jpsj.73.2593

詳細

抄録

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).

責任著者(Corresponding author)

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