Previous ODMR studies of MBE-grown ZnSe:N have been extended to includ
e frequency-dependent studies of the g = 1.38 line. The shape of this
line at 9 and 35 GHz is very close to that of a powder pattern found t
ypically in randomly oriented solids. Lowest-order simulations give an
axial symmetry with g(parallel to) = 1.27 and g(perpendicular to) = 1
.38. The symmetry and randomness suggest that the donor is associated
with dislocations.