Nuclear magnetic resonance study of xenon-131 interacting with surfaces: Effective Liouvillian and spectral analysis

Coherent and dissipative phenomena induced by transient adsorption of xenon -131 on a glass surface are studied by nuclear magnetic resonance spectrosc opy. We report the results of multiple-quantum filtered experiments over a range of temperatures, covering different relaxation regimes. An analysis i n terms of an effective Liouvillian is proposed, the complex eigenvalues of which may be directly extracted from the experimental spectra. For this pu rpose, we apply recently developed techniques for spectral analysis, in par ticular decimated signal diagonalization. The results are compared with a c onventional fit of the multiple-quantum build-up behavior. (C) 2000 America n Institute of Physics. [S0021-9606(00)00628-0].