Time-resolved polarization-sensitive measurements of the electric field in a sliding discharge by means of dc-field-induced coherent Raman scattering

摘要

We investigate the properties of the IR signal generated through coherent Raman scattering involving the Q(1) transition (ν=0, J=1 → ν=1, J= 1) of a hydrogen molecule in the presence of the quasi-static electric field of the sliding discharge propagating along a ferrite surface in a hydrogen atmosphere. The results of time-resolved polarization-sensitive measurements performed on this signal are employed to determine the parameters of the electric field in the sliding discharge. These measurements have shown, in particular, that the propagation of the discharge leader along the ferrite surface is accompanied by the rotation of the vector of the quasi-static electric field.