Dipolar order and spin-lattice relaxation in a liquid entrapped into nanosize cavities

Abstract

It was shown that by means of the two-pulse sequence, the spin system of a liquid entrapped into nanosize cavities can be prepared in quasi-equilibrium states of high dipolar order, which relax to thermal equilibrium with the molecular environment with a relaxation time T 1d. Measurements of the inverse dipolar temperature and spin-lattice relaxation time in the local fields provide an important information about the cavity size V, its shape F, and orientation Θ (with respect to the external magnetic field) of the nanopores. © 2011 Verlag der Zeitschrift für Naturforschung, Tübingen.