Physics & Astronomy
helium plasma
81%
metastable atoms
80%
surface waves
59%
helium
48%
ionization
43%
electric field strength
34%
radial distribution
31%
metastable state
31%
excitation
30%
line spectra
29%
absorption spectroscopy
28%
energy distribution
27%
distribution functions
24%
electron energy
23%
atoms
15%
Engineering & Materials Science
Ionization
80%
Helium
69%
Surface waves
68%
Atoms
64%
Plasmas
56%
Emission spectroscopy
53%
Absorption spectroscopy
46%
Population Density
37%
Distribution functions
31%
Electrons
31%
Electric fields
28%
Chemical Compounds
Surface Wave
100%
Ionization
49%
Plasma
38%
Distribution Function
37%
Emission Spectroscopy
35%
Absorption Spectroscopy
29%
Electric Field
27%
Strength
19%
Modification
17%