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Muonium diffusion dynamics in mercury oxide

Authors: J. Piroto 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

Ref.: Physica B: Condensed Matter 374/375, 423-425 (2006)

Abstract: The diffusion dynamics of the neutral muonium state found in HgO is addressed in this work. We propose a hopping model for the diffusion, and use it to analyse time-domain mu SR data. It is found that the diffusion is an incoherent quantum process, with an activation energy of 5.2(2)meV. The analysis also points to the anti-bonding site as the best-suited candidate for the muon´s localisation. (c) 2005 Elsevier B.V. All rights reserved.

DOI: 10.1016/j.physb.2005.11.122