Abstract
Muonium centers (Mu) in single crystals and powdered alkali halides have been studied using the high-timing-resolution transverse field μSR technique. Mu has been observed and its hyperfine parameter (HF) determined inevery alkali halide. For the rocksalt alkali halides, the HF parameter Aμ shows a systematic dependence on the host lattice constant. A comparison of the Mu HF parameter with hydrogen ESR data suggests that the Mu center is the muonic analogue of the interstitial hydrogenH 0i -center. The rate of Mu diffusion can be deduced from the motional narrowing of the nuclear hyperfine interaction. KBr shows two different Mu states, a low-temperatureMu I-state and a high-temperatureMu II-state.
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Baumeler, H., Kiefl, R.F., Keller, H. et al. Muonium centers in the alkali halides. Hyperfine Interact 32, 659–665 (1986). https://doi.org/10.1007/BF02394970
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DOI: https://doi.org/10.1007/BF02394970