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Muon-catalyzed fusion in deuterium at 3 K (1996)

Knowles, P. E. ; Bailey, J. M. ; Beer, G. A. ; [et al.]

Springer

Hyperfine interactions 101-102 (1996), S. 21-28

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ISSN: 1572-9540

Keywords: muon-catalyzed fusion ; deuterium ; solid

Source: Springer Online Journal Archives 1860-2000

Topics: Physics

Notes: Abstract Muon-catalyzed fusion in deuterium has traditionally been studied in gaseous and liquid targets. The TRIUMF solid hydrogen layer target system has been used to study the fusion reaction rates in the solid phase at a target temperature of 3 K. Both branches of the cycle were observed; neutrons by a liquid organic scintillator, and protons by a silicon detector located inside the target system. The effective molecular formation rate from the upper hyperfine state and the spin exchange rate have been measured, and information on the branching ratio parameters has been extracted.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1007/BF02227602

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Study of μ-catalyzed fusion in H-D mixtures (1999)

Olin, A. ; Adamczak, A. ; Beer, G.A. ; [et al.]

Springer

Hyperfine interactions 118 (1999), S. 163-170

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ISSN: 1572-9540

Keywords: muon catalyzed fusion ; astrophysical S-factor ; muonic molecule

Source: Springer Online Journal Archives 1860-2000

Topics: Physics

Notes: Abstract Muon-catalyzed fusion was first observed in the pdμ system, and remains a good test of our understanding of the underlying molecular and nuclear processes. In contrast to the ddμ and dtμ systems, no resonant behavior is expected, which considerably simplifies the dynamics. We will discuss data taken with solid H-D mixtures of 0.05%, 2%, 15% and 75% D2. In these measurements we observed simultaneously muons from pdμ→μ+ 3He and γs from pdμ→μ 3He + γ. A simulation code incorporating the relevant physics processes has been developed for the analysis of this data. Preliminary results are presented for the fusion and molecular formation rates. This new data stringently tests the currently-accepted fusion scheme. A new value of the astrophysical S-factor is derived.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1023/A:1012657124390

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Scattering of muonic hydrogen atoms (1999)

Mulhauser, F. ; Adamczak, A. ; Beer, G.A. ; [et al.]

Springer

Hyperfine interactions 119 (1999), S. 35-44

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ISSN: 1572-9540

Keywords: scattering ; muonic atom ; molecular formation rate ; time-of-flight ; Ramsauer–Townsend effect

Source: Springer Online Journal Archives 1860-2000

Topics: Physics

Notes: Abstract Our measurement compares the energy dependence of the scattering cross-sections of muonic deuterium and tritium on hydrogen molecules for collisions in the energy range 0.1–45 eV. A time-of-flight method was used to measure the scattering cross-section as a function of the muonic atom beam energy and shows clearly the Ramsauer–Townsend effect. The results are compared with theoretical calculations by using Monte Carlo simulations. The molecular pdµ and ptµ formation creates background processes. We measure the formation rates in solid hydrogen by detecting the 5.5 MeV (pdµ) and 19.8 MeV (ptµ) γ-rays emitted during the subsequent nuclear fusion processes.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1023/A:1012646316638

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