Elementary processes in the dynamics of two simultaneously excited fireballs in plasma

Two simultaneously excited fireballs in front of two positively biased electrodes immersed in plasma were investigated by 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, the influence of the appearance of the second fireball on the spectrum of the light emitted by the first fireball, the electron temperature and density, as well as on the elementary processes involved in the appearance and dynamics of the fireballs.