We report on a muon spin rotation study of the wide band-gap material ${\mathrm{La}}_2{\mathrm{O}}_3$. The focus is on the implantation process and the configurations formed at the end of the implantation trajectory. The data are analyzed in the recently developed “doorway model.” First-principles density-functional calculations were performed to identify the different muonium configurations in the lattice and their hyperfine interaction properties. A detailed description of the reaction mechanism at the end of the muon trajectory is given.

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• Muonium
• Oxides
• Density functional calculations
• Ion implantation
• Muon spin relaxation & rotation