Physics
Electrons
100%
Impact
98%
Collisions
85%
Calculation
74%
Fine Structure
56%
Photoionization
36%
Spectra
36%
Model
35%
Ion
33%
Emission
29%
Ratios
26%
Electron Energy
20%
Temperature
17%
Targets
16%
Region
16%
Utilization
16%
Value
15%
Ionization
12%
Iron
12%
Line Intensity
12%
Atomic Structure
11%
Transition Probabilities
10%
Spectrographs
10%
Speed
10%
Forbidden Transition
10%
Tungsten
9%
Opacity
9%
Ground State
9%
Energy Levels
8%
Configuration Interaction
8%
Electron Scattering
8%
Differences
7%
Electron Density
6%
Photons
6%
Expansion
6%
Approximation
6%
Quality
6%
Subdwarfs
6%
Type Ia Supernovae
6%
Heavy Metal
6%
Valence
5%
Planetary Nebula
5%
Spectroscopy
5%
X Ray
5%
High Resolution
5%
Earth and Planetary Sciences
Collision
52%
Excitation
51%
Electron Impact
49%
Fine Structure
38%
Calculation
26%
Comparison
24%
Datum
22%
Emissions
21%
Ratio
17%
Observation
16%
Spectra
15%
State
14%
Electron Energy
14%
Ion
10%
Temperature
10%
Optical Instrument
8%
Spectrographs
8%
Rate
8%
Target
8%
Value
7%
Agreement
7%
Speed
6%
Difference
6%
Electron Density
6%
Coupling
5%
Ground State
5%
Matrix Method
5%
Planetary Nebulae
5%
Wave
5%
Electron
5%
Wavelength
5%
Chemistry
Electron Impact Excitation
44%
Collision
37%
Strength
37%
Concentration
20%
Photoionization
16%
Ion
14%
Energy
13%
Spectra
9%
Application
7%
Iron
7%
Reaction Temperature
7%
Scattering
6%
Procedure
6%
Electron Particle
6%
Electron Temperature
6%
Rate
5%
Configuration Interaction
5%
Collisional
5%
