  Time-resolved electric field strength measurements have been performed, using
an electric-field induced second harmonic (E-FISH) diagnostic, in a nanosecond
glow discharge of an impulse dielectric barrier discharge (iDBD), in an ammonia
gas environment. A temporal resolution of 2 ns and a spatial resolution
estimated at 70 $\mu$m (given by laser waist) have been achieved. The
comparative study of E-FISH measurements with and without a plasma discharge,
operated at 4 kHz, reveal the presence of a persistent counter electric field,
which is assumed to be caused by charge accumulation in between the AlN
dielectrics used. Furthermore, by studying the influence of the applied
voltage, the pressure, and the inter-dielectric distance, measurements seem to
indicate the presence of charges remaining also in the post-discharge volume
from the previous discharge to the next one.\&\#xD;
