Modelling isolated hydrogen impurity in Lu2O3 with muonium spectroscopy
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We identified in this experiment two muon configurations in Lu2O3, the oxygen-bound (O−Mu+) ground state and a metastable (energy barrier 0.7(3) eV) atom-like excited state. These configurations are partially not formed immediately after implantation but somewhat delayed due to the requirement of a lattice rearrangement around the muon. These rearrangement processes occur on a timescale of ns to μs and are thus observable in μSR experiments. A special role plays a fairly long-lived (ns to μs) transition state as an intermediate step in the reaction process.
Vilao, R C.; Vieira, R B L.; Alberto, H V.; Gil, J M.; Weidinger, A; Lichti, R L.; Mengyan, Patrick W.; Baker, B B.; and Lord, J S., "Modelling isolated hydrogen impurity in Lu2O3 with muonium spectroscopy" (2020). Journal Articles. 453.