Physics – Nuclear Physics – Nuclear Experiment
Scientific paper
1997-02-20
Phys.Rev. A56 (1997) 1970-1982
Physics
Nuclear Physics
Nuclear Experiment
19 pages, 11 figures, submitted to PRA Feb 20, 1997
Scientific paper
10.1103/PhysRevA.56.1970
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 of D_2 at a target temperature of 3 K. Products of two distinct branches of the reaction 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 of $\mu d$ and the hyperfine transition rate have been measured: $\tilde{\lambda}_(3/2)=2.71(7)_{stat.}(32)_{syst.} \mu/s$, and $\tilde{\lambda}_{(3/2)(1/2)} =34.2(8)_{stat.}(1)_{syst.} \mu /s$. The molecular formation rate is consistent with other recent measurements, but not with the theory for isolated molecules. The discrepancy may be due to incomplete thermalization, an effect which was investigated by Monte Carlo calculations. Information on branching ratio parameters for the s and p wave d+d nuclear interaction has been extracted.
Adamczak Andrzej
Bailey Janelle Margaret
Beer G. A.
Beveridge J. L.
Fujiwara Makoto C.
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