Understanding the mechanism of positive leader discharge is important in lightning
protection engineering and the external insulation design in high voltage power …

Electrical discharges in long air gaps, referred to as 'leader discharges', usually propagate
with transient thermal plasma channels. The gas temperature evolution of the channels …

No observations show evidence of ionization in long air gap discharge during dark periods.
However, for the first time, weak channel illuminations are observed during the so‐called …

Since a large number of spherical shielding balls are adopted in valve hall, investigating
discharge characteristics of sphere-plane gap is of great significance for insulation design in …

We provide the clearest experimental evidence to date that positive leader velocity
decreases with the decline of air density in the troposphere. The experiments are conducted …

The dynamics of the brightness of a long‐spark channel during the breakthrough and the
return‐stroke phases of discharge development were experimentally studied using streak …

Abstract Knowledge of leader corona is the basis for long spark discharge modelling, which
is critical to understand the underlying physics of lightning flashes and dielectric breakdown …

The diameter of a stem, a common origin point for streamers where the transition from the
streamer to the leader takes place, has a significant effect on the simulation of streamer-to …

Precursory current pulses (precursors) and initial upward leader pulses are examined to
characterize the charge transfer of precursors and the sustained upward leader during the …

摘要先导放电通道由等离子体构成, 先导的注入电荷和先导头部温度是用于判断正极性先导起始
的关键物理参数. 为了获取先导起始的条件及先导发展过程的等离子体特性 …