The spectral, energy, and electrical characteristics of atmospheric pressure nanosecond DBD plasma in HgI2 / HgBr2 / Xe / He mixtures were studied. The discharge was initiated by a repetitively pulsed voltage with a pulse repetition rate of 5-20 kHz of positive polarity, an amplitude of 25.5 kV, and a halfheight duration of 150 ns. The optical emission of the exciplex molecules HgI(B2Σ+1/2-X2Σ+1/2) and HgBr (B2Σ+1/2-X2Σ+1/2)was investigated. Based on a comparison of the temporal behavior of the B-X transition spectra of the HgI (λmax.=443 nm) and HgBr (λmax.= 502 nm) molecules, the mechanism of simultaneous formation of the exciplexe sHgI * and HgBr* molecules is determined. Specific power radiation, namely 96 W/cm3 in a single pulse and the average, namely 260 mW/cm3 at a pulse repetition rate of 18 kHz was achieved. The distribution of the energy and rates of the processes responsible for the emission of HgI and HgBr molecules are analyzed. Studies have revealed the possibility of optimizing the pulsed power in order to obtain simultaneous emission in the visible (violet-blue and blue-green light) spectral range in the plasma of the atmospheric-pressure DBD in the HgI2/HgBr2/Xe/He mixture.