We show that atomic gasses can support solitary pulses of unipolar, non-oscillating EM-field ("EM-bubbles") of up to the atomic amplitude, with their length ranging from ~10−9 s to ~10−16 s , which propagate without dispersion and are stable and insensitive to the change of gas density. We found the condition on the atomic potential necessary for formation of EM-bubble. Atomic gasses can also support an EM shock which is a precursor of a cw ionizing field.
Spatiotemporally resolved characteristics of a gliding arc discharge in a turbulent air flow at atmospheric pressure