TY - JOUR
T1 - Time evolution calculation of muon catalysed fusion
T2 - Emission of recycling muons from a two-layer hydrogen film
AU - Yamashita, Takuma
AU - Okutsu, Kenichi
AU - Kino, Yasushi
AU - Nakashima, Ryota
AU - Miyashita, Konan
AU - Yasuda, Kazuhiro
AU - Okada, Shinji
AU - Sato, Motoyasu
AU - Oka, Toshitaka
AU - Kawamura, Naritoshi
AU - Kanda, Sohtaro
AU - Shimomura, Koichiro
AU - Strasser, Patrick
AU - Takeshita, Soshi
AU - Tampo, Motonobu
AU - Doiuchi, Shogo
AU - Nagatani, Yukinori
AU - Natori, Hiroaki
AU - Nishimura, Shoichiro
AU - Pant, Amba Datt
AU - Miyake, Yasuhiro
AU - Ishida, Katsuhiko
N1 - Funding Information:
This work was financially supported by JSPS KAKENHI Grant number JP18H05461, JP18H05464 and JP20K14381. Computation was partially conducted on ITO at Kyushu University, HOKUSAI at RIKEN and FLOW at Nagoya University.
Funding Information:
This work was financially supported by JSPS KAKENHI Grant number JP18H05461 , JP18H05464 and JP20K14381 . Computation was partially conducted on ITO at Kyushu University, HOKUSAI at RIKEN and FLOW at Nagoya University.
Publisher Copyright:
© 2021 Elsevier B.V.
PY - 2021/8
Y1 - 2021/8
N2 - Recycling muon having approximately 10 keV kinetic energy produced in a muon catalysed fusion (μCF) cycle is expected to be a source of negative muon beam with high-spatial/time coherence. We report a time evolution calculation of μCF cycle with a particular focus on the emission of recycling muons from a hydrogen film target. Rate equations for the μCF reactions are solved using the 4th-order Runge-Kutta method. Considering a two-layer solid hydrogen film target composed of 1 mm hydrogen-deuterium layer and 2 µm deuterium-tritium layer, we have numerically simulated the time evolution of the muonic states and their populations in these layers. The muon atomic and molecular processes in the layers are solved simultaneously by introducing a probability of muonic deuterium atoms traveling between the layers via the Ramsauer-Townsend effect. The use of T2 amplifies the recycling muon emission. A weak dependence of the emission fraction of the recycling muons on the T2 concentration is predicted, which can be utilized to minimize the usage of tritium.
AB - Recycling muon having approximately 10 keV kinetic energy produced in a muon catalysed fusion (μCF) cycle is expected to be a source of negative muon beam with high-spatial/time coherence. We report a time evolution calculation of μCF cycle with a particular focus on the emission of recycling muons from a hydrogen film target. Rate equations for the μCF reactions are solved using the 4th-order Runge-Kutta method. Considering a two-layer solid hydrogen film target composed of 1 mm hydrogen-deuterium layer and 2 µm deuterium-tritium layer, we have numerically simulated the time evolution of the muonic states and their populations in these layers. The muon atomic and molecular processes in the layers are solved simultaneously by introducing a probability of muonic deuterium atoms traveling between the layers via the Ramsauer-Townsend effect. The use of T2 amplifies the recycling muon emission. A weak dependence of the emission fraction of the recycling muons on the T2 concentration is predicted, which can be utilized to minimize the usage of tritium.
KW - Muon catalyzed fusion
KW - Slow muon
KW - Time evolution calculation
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U2 - 10.1016/j.fusengdes.2021.112580
DO - 10.1016/j.fusengdes.2021.112580
M3 - Article
AN - SCOPUS:85105571076
VL - 169
JO - Fusion Engineering and Design
JF - Fusion Engineering and Design
SN - 0920-3796
M1 - 112580
ER -
