A software package which allows the correct determination of individual rel
axation times for all the nonequivalent nuclei in poorly resolved NMR spect
ra is described. The procedure used, based on the fitting of each spectrum
in the series recorded in the relaxation experiment, should improve the ana
lysis of relaxation data in terms of quantitative dynamic information, espe
cially in anisotropic phases. Tests on simulated data and experimental exam
ples concerning H-1 and C-13 T-1p measurement in a solid copolymer and H-2
T-1Z and T-1Q measurement in a liquid crystal are shown and discussed. (C)
1999 Academic Press.