DIPOLAR INTERACTIONS IN DEUTERON SPIN SYSTEMS .2. TRANSVERSE RELAXATION

The effect of the so-called local field terms of the dipolar interacti ons on the transverse relaxation of deuteron spin systems is investiga ted for a variety of physical situations. It is shown that the respons e of the spin systems to arbitrary pulse sequences can be calculated i n an operator formalism. For illustration, calculations of the signals following a quadrupolar echo sequence are performed, and expressions for the echo amplitude are given including that for a system of a deut eron coupled to an arbitrary number of spins. A simple model is formul ated and the transverse relaxation rate in supercooled liquids is calc ulated for the whole range of motional correlation times of experiment al interest. (C) 1995 American Institute of Physics.