Dielectric barrier discharge (DBD) between two cylindrical glass containers with saltwater generated by a nanosecond repetitively pulsed power generator is reported.The electricalparameters,luminous images and spectrum diagnosis are presented.It is shown that the DBDpossesses a large discharge current and an intense optical emission from the nitrogen secondpositive system below 400 nm.The gas temperature remains very close to room temperatureregardless of pulse polarity.Luminous photographs with a short exposure time down to 2 nsindicate that no filament is observed and the discharge is homogeneous.
