Abstract
For pt.I see ibid., vol.9, p.1699 (1977). The effect of impurity scattering on the leading divergence of the nuclear relaxation rate above a superconducting transition is investigated. It is found that impurity scattering smears the critical singularity into a peak. The peak is very sharp in the pure limit, when ( zeta /l)2 >1. The experimental implications are also briefly discussed.
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