Inhomogeneous muonium diffusion in solid nitrogen

Citation:
Storchak, V, Brewer JH, Hardy WN, Johnston S, Kreitzman SR, Morris GD.  1994.  Inhomogeneous muonium diffusion in solid nitrogen. Hyperfine Interactions. 85:103-108.

Keywords:

depolarization, insulators, kcl, quantum diffusion

Abstract:

The spin dynamics of the muonium (Mu) atom diffusing quantum mechanically in solid nitrogen (s-N-14(2)) has been studied using the technique of Mu spin relaxation. A strong relationship between longitudinal (T1(-1)) and transverse (T2(-1)) relaxation rates (familiar in NMR) has been experimentally demonstrated for the first time for muonium relaxation. At low temperatures the results are inconsistent with diffusion models using a single correlation time tau(c); this is taken as evidence for the intrinsic inhomogeneity of the problem. The temperature dependence of the average Mu hop rate tau(c)-1 gives clear evidence that Mu quantum diffusion in s-N2 is governed by the two-phonon interaction.

Notes:

n/a

Website

DOI:

10.1007/bf02069409