Abstract
Detailed studies of muonium in ice carried out at TRIUMF in the mid eighties directly inspired EPR investigation of H and D atoms in ice at the Argonne National Laboratory, using a pulsed EPR spectrometer in conjunction with a Van de Graaff electron accelerator. T2 measurements were made by the spin-echo method, Subsequent work resulted in a measurement of the longitudinal spin relaxation time T1 at a single temperature. In combination with T2 this permits an unambiguous determination of the strength of the magnetic interaction giving rise to relaxation, and hence permits conversion of all the existing T2 data to diffusional correlation times, τ. We have recently initiated a further study of muonium in ice, this time concentrating on T1 measurements. Preliminary work shows the feasibility of determining τ from the field dependence of T1 at a given temperature. The result is in good agreement with our earlier, less direct determinations.
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