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Thermally activated muonium formation in Al2O3 and BaF2
Authors:S. R. Kreitzman  R. F. Kiefl  D. R. Noakes  J. H. Brewer  E. J. Ansaldo
Affiliation:(1) TRIUMF, 4004 Wesbrook Mall, V6T 2A3 Vancouver, B.C., Canada;(2) Dept. of Physics, Univ. of Saskatchewan, S7N OWO Sask., Saskatoon, Canada
Abstract:Direct evidence is presented for thermally activated muonium formation in Al2O3 and BaF2. In each case the signature of the transition is a transverse field depolarization rate of the prompt diamagnetic component which is much too large to be attributable to muon-nuclear dipolar couplings. Longitudinal field decoupling measurements in Al2O3 support the interpretation that the initial diamagnetic fraction converts into a state with a stongly coupled electron —-i.e., muonium.
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