Abstract
Standard μSR experiments in diamond have shown that the relative sign of the hyperfine parameters of the anisotropic Mu* state is negative (A ‖/A ⊥<0). We report an experimental determination of theabsolute sign of the Mu* hyperfine parameters by studying the transferred muon polarization during the thermally-activated transition from the isotropic Mu state to Mu*. The results demonstrate that the isotropic part of the Mu* hyperfine interaction is negative. In a nitrogen-poor diamond, both the Mu disappearance rate and the enhancement of the Mu* signals are well-described by a single Arrhenius law.
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Odermatt, W., Baumeler, H., Keller, H. et al. Absolute sign of the Mu* hyperfine parameters in diamond. Hyperfine Interact 32, 583–588 (1986). https://doi.org/10.1007/BF02394959
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DOI: https://doi.org/10.1007/BF02394959