COMPUTER-PROGRAM FOR THE CALCULATION OF PARAMAGNETIC ENHANCEMENTS NUCLEAR-RELAXATION RATES IN SLOWLY ROTATING SYSTEMS

A computer program has been developed for the calculation of paramagne tic enhancement of nuclear-relaxation rates as a function of magnetic field in slowly rotating systems, when the Solomon-Bloembergen equatio ns break down. The inclusion in the static spin-Hamiltonian parameters of g anisotropy, zero-field splitting, and hyperfine coupling with th e metal nucleus provides a description of the electron spin system whi ch is practically complete and adequate for most experimental cases, A ll three tensorial terms may include rhombic components and they can b e treated simultaneously, provided that the tensors share the same pri ncipal axes. (C) 1995 Academic Press, Inc.