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 …

The elongation and branching of long positive spark discharges in the laboratory and in
lightning have been attributed to the formation of thermalized channels inside a diffuse, glow …

Leader discharge plays a key role in the breakdown of long air gap and the evolution of
natural lightning discharges. Prior to the formation of continuous leaders, streamer corona …

In this study, we present a comprehensive investigation of positive leader discharges, with
the aim of enhancing our understanding of leader decay and reactivation. Our approach …

This paper presents an original investigation into time-resolved moiré deflectometry (MD) for
gas temperature measurements of long sparks in air. In order to perform a rigorous …

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 velocity‐current relation of positive leader discharges is of great importance in the
research of lightning physics. However, the measured data in a wide range of current up to …

This paper presents an original investigation into the axial evolution of streamer stem during
a dark period in long spark discharge. To obtain thermodynamic morphology and …

The results of the physical modelling of the formation processes of upward discharges from
grounded objects in the artificial thunderstorm cell's electric field are presented. We …