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Time evolution calculation of muon catalysed fusion; Emission of recycling muons from a two-layer hydrogen film

重水素・三重水素内ミュオン触媒核融合の時間発展の計算

山下 琢磨*; 奥津 賢一*; 木野 康志*; 中島 良太*; 宮下 湖南*; 安田 和弘*; 岡田 信二*; 佐藤 元泰*; 岡 壽崇  ; 河村 成肇*; 神田 聡太郎*; 下村 浩一郎*; Strasser, P.*; 竹下 聡史*; 反保 元伸*; 土居内 翔伍*; 永谷 幸則*; 名取 寛顕*; 西村 昇一郎*; Pant, A. D.*; 三宅 康博*; 石田 勝彦*

Yamashita, Takuma*; Okutsu, Kenichi*; Kino, Yasushi*; Nakashima, Ryota*; Miyashita, Konan*; Yasuda, Kazuhiro*; Okada, Shinji*; Sato, Motoyasu*; Oka, Toshitaka; Kawamura, Naritoshi*; Kanda, Sotaro*; Shimomura, Koichiro*; Strasser, P.*; Takeshita, Soshi*; Tampo, Motonobu*; Doiuchi, Shogo*; Nagatani, Yukinori*; Natori, Hiroaki*; Nishimura, Shoichiro*; Pant, A. D.*; Miyake, Yasuhiro*; Ishida, Katsuhiko*

重水素・三重水素混合固体標的に負ミュオン($$mu$$)を入射し、ミュオン触媒核融合反応($$mu$$CF)の時間発展をルンゲクッタ法によって計算した。核融合によって生成する中性子の強度や、固体標的から真空中に放出されるミュオン量を最大化する三重水素含有率を明らかにした。

A muon ($$mu$$) having 207 times larger mass of electron and the same charge as the electron has been known to catalyze a nuclear fusion between deuteron (d) and triton (t). These two nuclei are bound by $$mu$$ and form a muonic hydrogen molecular ion, dt$$mu$$. Due to the short inter-nuclear distance of dt$$mu$$, the nuclear fusion, d +t$$rightarrow alpha$$ + n + 17.6 MeV, occurs inside the molecule. This reaction is called muon catalyzed fusion ($$mu$$CF). Recently, the interest on $$mu$$CF is renewed from the viewpoint of applications, such as a source of high-resolution muon beam and mono-energetic neutron beam. In this work, we report a time evolution calculation of $$mu$$CF in a two-layered hydrogen isotope target.

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