A Fortran program to interpret pulsed field-gradient spin-echo diffusion data

NMR spin echo attenuation of the diffusing species, caused by steady and pulsed magnetic field gradients, is interpreted in terms of diffusion constants. Various least-squares techniques are used to find the diffusion constant, and optionally, the constant spin echo of a non-diffusing species and to detect deviations from the model. Comprehensive error analysis and plot are provided. (Auth.)