RESONANCE ABSORPTION BEATS DUE TO COHERENT EXCITATION OF NONDEGENERATE METASTABLE ATOMIC SUBLEVELS BY ELECTRON IMPACT

INTENSITY BEATS IN RESONANCE RADIATION AND ABSORPTION DUE TO COHERENT EXCITATION OF ATOMS BY ELECTRON IMPACT.

INTENSITY BEATS IN RESONANCE RADIATION ABSORBED BY A COHERENTLY EXCITED METASTABLE STATE

COHERENT EXCITATION OF STATES BY ELECTRON IMPACT

Intensity Beats in Resonance Radiation Absorbed by a Coherently Excited Metastable State Formed by Electron Impact

MAGNETIC RESONANCE OF THE IONIC GROUND STATE OF ATOMS THROUGH EXCHANGE COLLISIONS WITH THE METASTABLE STATE; AND INTENSITY BEATS DUE TO COHERENT EXCITATION

POLARIZATION OF ATOMIC LINE RADIATION. II. OPTICAL EXCITATION AND ITS RELATIONSHIP TO ELECTRON IMPACT EXCITATION.