Spectral Investigations of Two Simultaneous Fireballs in Plasma

Two simultaneous existing fireballs excited in front of two positively biased electrodes immersed in plasma were investigated through emission spectroscopy under different experimental conditions (gas and pressure, plasma density). Experimental results were obtained regarding the spectral composition of the light emitted by the fireballs, as well as on the influence of the second fireball appearance on the spectrum of the light emitted by the first fireball.