Physical Review Letters · 1961 · 819 citations · 3 references
Natural SciencesPhysicsOpticsPlasma PhysicsSpectroscopyLaser PhysicsLaser-plasma InteractionsOptical SpectroscopyPlasma OscillationsDischarge OscillationsMaser EmissionMaser SpectroscopyPopulation Inversion
cos'8 sin'8. However, for Fe'+ ions in MgO the cubic field causes a small admixing of states' and consequently, a slight deviation of the transi- tion probability from a simple cos'8 sin'6t de- pendence. Therefore, exact wave functions have been used in computing the theoretical angular variation.
3
Absorption Studies of Helium Metastable Atoms and Molecules
A. V. Phelps · Physical Review · 1955 · 399 citations
Dispersion in Electrically Excited Gases
Rudolf Ladenburg · Reviews of Modern Physics · 1933 · 155 citations