Volume 25: Optical Methods of Investigating Solid Bodies

I. Polyatomic Molecules and Molecular Crystals (aims, methods, and objects of the investigation, statement of problems, review of literature).- II. Anisotropy of Molecules (determination of the orientation of radiating oscillators with respect to the axes of the molecules by means of the polarization spectra of the luminescence of solutions).- III. The Oriented Gas Model and its Application to Molecular Crystals (polarization diagrams of luminescence).- IV. Migration of Excitation Energy Between the Molecules in Molecular Crystals (dependence of the polarization of the luminescence on that of the exciting light).- V. The Part of Free Excitons in the Luminescence of Molecular Crystals (study of the relation between the degree of polarization and the wavelength of the luminescence).- VI. Polarization of Radioluminescence in Molecular Crystals and Effect of Ionizing Radiations on the Polarization of Their Photoluminescence.- VII. Experimental Methods.- I. Experimental.- II. Vibrational Spectra of Oxides with Molecular Lattice Structure.- III. Vibrational Spectra of Glass-Forming Oxides with Coordination Lattice Structure.- IV. Vibrational Spectra of Substances with Chain Lattice Structure.- Calculation of Cross Sections for Excitation of Atoms and Ions by Electron Impact.