Investigates the decay and reactivation mechanisms of positive leader discharges using a high-resolution Schlieren platform and a detailed thermal-hydrodynamic model, revealing the evolution of temperature, electric field, and conductivity during decay, providing key insights for long air gap discharge physics.
Huang, Yubin · He, Hengxin · Liu, Lipeng · Ding, Yujian · Shen, Chen · Wu, Yutong · Bin, Luo · Cheng, Chen · Chen, Weijiang
Plasma Sources Science and Technology 2023
2D spatio-temporal evolution of gas temperature in positive leaders with gap length up to 3 m
once a positive leader starts to decay, the temperature drops below 3000 K
both electric field and conductivity decrease significantly compared to a stable leader
a decaying leader might be reactivated before temperature drops below 2000 K