Study of the discharge channel evolution characteristics in the flashlamps

This work is devoted to study the evolution characteristics of the plasma discharge channel (DC) in the flashlamps. Various influencing factors are studied, including charging voltages, main pulse width, and time interval between the pre-ionization pulse and the main pulse. Distinct branching phenomenon is observed near the grounding terminal of the flashlamps. It is found that the electric field distribution in the flashlamp working environment has the most significant influence on the DC evolution process, determining the DC shape, while other factors have influence on the brightness and fullness of the discharge channels.