Measurements of 3He accumulation effect on muon catalyzed fusion in the solid/liquid DT mixtures

N. Kawamura; K. Nagamine; T. Matsuzaki; K. Ishida; S. N. Nakamura; S. Sakamoto; I. Watanabe; M. Iwasaki; M. Tanase; M. Kato; K. Kurosawa; H. Sugai; K. Kudo; N. Takeda; G. H. Eaton

doi:10.1016/S0370-2693(99)01017-5

Measurements of ³He accumulation effect on muon catalyzed fusion in the solid/liquid DT mixtures

N. Kawamura, K. Nagamine, T. Matsuzaki, K. Ishida, S. N. Nakamura, S. Sakamoto, I. Watanabe, M. Iwasaki, M. Tanase, M. Kato, K. Kurosawa, H. Sugai, K. Kudo, N. Takeda, G. H. Eaton

ENG - Quantum Science and Energy Engineering

Research output: Contribution to journal › Article › peer-review

22 Citations (Scopus)

Abstract

An effect on the muon catalyzed fusion (μCF) of the ³He originating from the tritium decay was studied by measuring the time-dependent change of the fusion-neutron disappearance rate (λ_n) in the deuterium and tritium (DT) mixtures with various tritium concentrations, C_t = 0.1,0.2, ..., 0.7. A clear difference between the solid and the liquid DT mixtures due to the ³He accumulation effect was observed: in solid λ_n increased with the time after solidification, whereas in liquid λ_n did not change. This indicates that ³He produced in the solid DT mixtures is trapped. Admitting that all the ³He remain in solid, the muon transfer rate from tμto ³He is determined to be about 4 × 10⁹s^-1, consistent with the theoretical prediction.

Original language	English
Pages (from-to)	74-80
Number of pages	7
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	465
Issue number	1-4
DOIs	https://doi.org/10.1016/S0370-2693(99)01017-5
Publication status	Published - 1999

Keywords

He accumulation effect
Muon catalyzed fusion
Solid hydrogens

ASJC Scopus subject areas

Nuclear and High Energy Physics

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Kawamura, N., Nagamine, K., Matsuzaki, T., Ishida, K., Nakamura, S. N., Sakamoto, S., Watanabe, I., Iwasaki, M., Tanase, M., Kato, M., Kurosawa, K., Sugai, H., Kudo, K., Takeda, N., & Eaton, G. H. (1999). Measurements of ³He accumulation effect on muon catalyzed fusion in the solid/liquid DT mixtures. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 465(1-4), 74-80. https://doi.org/10.1016/S0370-2693(99)01017-5

Measurements of ³He accumulation effect on muon catalyzed fusion in the solid/liquid DT mixtures. / Kawamura, N.; Nagamine, K.; Matsuzaki, T.; Ishida, K.; Nakamura, S. N.; Sakamoto, S.; Watanabe, I.; Iwasaki, M.; Tanase, M.; Kato, M.; Kurosawa, K.; Sugai, H.; Kudo, K.; Takeda, N.; Eaton, G. H.

In: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, Vol. 465, No. 1-4, 1999, p. 74-80.

Research output: Contribution to journal › Article › peer-review

Kawamura, N, Nagamine, K, Matsuzaki, T, Ishida, K, Nakamura, SN, Sakamoto, S, Watanabe, I, Iwasaki, M, Tanase, M, Kato, M, Kurosawa, K, Sugai, H, Kudo, K, Takeda, N & Eaton, GH 1999, 'Measurements of ³He accumulation effect on muon catalyzed fusion in the solid/liquid DT mixtures', Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, vol. 465, no. 1-4, pp. 74-80. https://doi.org/10.1016/S0370-2693(99)01017-5

Kawamura, N. ; Nagamine, K. ; Matsuzaki, T. ; Ishida, K. ; Nakamura, S. N. ; Sakamoto, S. ; Watanabe, I. ; Iwasaki, M. ; Tanase, M. ; Kato, M. ; Kurosawa, K. ; Sugai, H. ; Kudo, K. ; Takeda, N. ; Eaton, G. H. / Measurements of ³He accumulation effect on muon catalyzed fusion in the solid/liquid DT mixtures. In: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics. 1999 ; Vol. 465, No. 1-4. pp. 74-80.

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title = "Measurements of 3He accumulation effect on muon catalyzed fusion in the solid/liquid DT mixtures",

abstract = "An effect on the muon catalyzed fusion (μCF) of the 3He originating from the tritium decay was studied by measuring the time-dependent change of the fusion-neutron disappearance rate (λn) in the deuterium and tritium (DT) mixtures with various tritium concentrations, Ct = 0.1,0.2, ..., 0.7. A clear difference between the solid and the liquid DT mixtures due to the 3He accumulation effect was observed: in solid λn increased with the time after solidification, whereas in liquid λn did not change. This indicates that 3He produced in the solid DT mixtures is trapped. Admitting that all the 3He remain in solid, the muon transfer rate from tμto 3He is determined to be about 4 × 109s-1, consistent with the theoretical prediction.",

keywords = "He accumulation effect, Muon catalyzed fusion, Solid hydrogens",

author = "N. Kawamura and K. Nagamine and T. Matsuzaki and K. Ishida and Nakamura, {S. N.} and S. Sakamoto and I. Watanabe and M. Iwasaki and M. Tanase and M. Kato and K. Kurosawa and H. Sugai and K. Kudo and N. Takeda and Eaton, {G. H.}",

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AU - Kawamura, N.

AU - Nagamine, K.

AU - Matsuzaki, T.

AU - Ishida, K.

AU - Nakamura, S. N.

AU - Sakamoto, S.

AU - Watanabe, I.

AU - Iwasaki, M.

AU - Tanase, M.

AU - Kato, M.

AU - Kurosawa, K.

AU - Sugai, H.

AU - Kudo, K.

AU - Takeda, N.

AU - Eaton, G. H.

PY - 1999

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N2 - An effect on the muon catalyzed fusion (μCF) of the 3He originating from the tritium decay was studied by measuring the time-dependent change of the fusion-neutron disappearance rate (λn) in the deuterium and tritium (DT) mixtures with various tritium concentrations, Ct = 0.1,0.2, ..., 0.7. A clear difference between the solid and the liquid DT mixtures due to the 3He accumulation effect was observed: in solid λn increased with the time after solidification, whereas in liquid λn did not change. This indicates that 3He produced in the solid DT mixtures is trapped. Admitting that all the 3He remain in solid, the muon transfer rate from tμto 3He is determined to be about 4 × 109s-1, consistent with the theoretical prediction.

AB - An effect on the muon catalyzed fusion (μCF) of the 3He originating from the tritium decay was studied by measuring the time-dependent change of the fusion-neutron disappearance rate (λn) in the deuterium and tritium (DT) mixtures with various tritium concentrations, Ct = 0.1,0.2, ..., 0.7. A clear difference between the solid and the liquid DT mixtures due to the 3He accumulation effect was observed: in solid λn increased with the time after solidification, whereas in liquid λn did not change. This indicates that 3He produced in the solid DT mixtures is trapped. Admitting that all the 3He remain in solid, the muon transfer rate from tμto 3He is determined to be about 4 × 109s-1, consistent with the theoretical prediction.

KW - He accumulation effect

KW - Muon catalyzed fusion

KW - Solid hydrogens

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