Keyphrases
Photoionization
100%
Streamer
100%
Sprites
100%
Positive Streamer
100%
Negative Streamer
100%
Streamer Head
20%
Low Acceleration
10%
Lightning
10%
Multi-channel
10%
Partial Pressure
10%
High Electric Field
10%
Ion Pairs
10%
Molecular Oxygen
10%
Photometric Observations
10%
Pair Production
10%
Atmospheric Pressure
10%
Excited States
10%
Ambient Conditions
10%
Electron Density
10%
High-speed Video
10%
Quasi-static Fields
10%
Expansion Rate
10%
Speed of Light
10%
Propagation Speed
10%
Acceleration Rate
10%
UV Photons
10%
Air Pressure
10%
Absorption Cross Section
10%
Scaling Properties
10%
Low Expansion
10%
High-speed Photography
10%
Peak Electric Field
10%
Single Electron
10%
Molecular Nitrogen
10%
Maximum Radius
10%
Double Head
10%
Similarity Law
10%
Earth and Planetary Sciences
Photoionization
100%
Electric Field
75%
Atmospheric Pressure
50%
Lightning
25%
Electron Density
25%
Partial Pressure
25%
Absorption Cross Sections
25%
Pair Production
25%
Electron Avalanche
25%
Physics
Photoionization
100%
Electric Fields
75%
Atmospheric Pressure
50%
Pair Production
25%
Excitation
25%
Electron Density
25%
Absorption Cross Sections
25%
Electron Avalanche
25%
Chemistry
Photoionization
100%
Electric Field
75%
Dioxygen
25%
Excited State
25%
Electron Density
25%
Partial Pressure
25%
Ion Pair
25%
Absorption Cross-Section
25%
Pair Production
25%
Agricultural and Biological Sciences
Photoionization
100%
Atmospheric Pressure
25%