The diffusion dynamics of the neutral muonium state found in HgO were considered. A hopping model for the diffusion was proposed, and was used to analyze time-domain μSR data. It was found that the diffusion was an incoherent quantum process, with an activation energy of 5.2meV. The analysis also indicated that the anti-bonding site was the best candidate for muon localization.

Muonium Diffusion Dynamics in Mercury Oxide. J.P.Duarte, J.M.Gil, H.V.Alberto, R.C.Vilão, A.Weidinger, N.Ayres de Campos, S.F.J.Cox, J.S.Lord, S.P.Cottrell, E.A.Davis: Physica B, 2006, 374-375, 423-5