Physics
Collisions
100%
Calculation
78%
Matrix
62%
Fine Structure
52%
Model
35%
Electrons
33%
Ratios
33%
Spectra
31%
Emission
28%
Impact
27%
Electron Energy
25%
Temperature
20%
Targets
19%
Photoionization
18%
Value
16%
Utilization
16%
Region
15%
Ion
14%
Atomic Structure
14%
Iron
13%
Tungsten
11%
Ionization
11%
Scattering
10%
Energy Levels
10%
Ground State
10%
Configuration Interaction
9%
Line Intensity
9%
Photons
9%
Speed
9%
Forbidden Transition
8%
Quality
8%
Spectrographs
8%
Opacity
7%
Electron Scattering
7%
Expansion
7%
Work
6%
Approximation
6%
Astrophysics
6%
Differences
6%
Valence
6%
Transition Probabilities
6%
Wave Function
6%
Electron Density
5%
Active Galactic Nuclei
5%
High Resolution
5%
Atoms
5%
Subdwarfs
5%
Earth and Planetary Sciences
Collision
68%
Fine Structure
34%
Calculation
23%
Comparison
22%
State
20%
Electron Impact
17%
Excitation
16%
Datum
15%
Electron Energy
15%
Observation
14%
Ratio
14%
Plasma
13%
Emission
13%
Spectra
11%
Optical Instrument
10%
Spectrographs
10%
Temperature
9%
Agreement
9%
Coupling
8%
Laboratory
7%
Rate
7%
Value
7%
Speed
7%
Target
6%
Difference
6%
Ground State
5%
Ion
5%
Radiation
5%
Opacity
5%
Electron Scattering
5%
Model
5%
Electron Density
5%
Chemistry
Collision
44%
Strength
43%
R
31%
Electron Impact Excitation
29%
Concentration
21%
Configuration
18%
Energy
14%
Photoionization
13%
Procedure
10%
Spectra
8%
Scattering
7%
Ion
6%
Electron Temperature
6%
Base
5%
Application
5%
Collisional
5%
Photon
5%
Opacity
5%
Rate
5%
