Reassessment of vibration spectra in alkali phosphate crystals

Optical and Thermal Properties of Mixed Alkali Phosphate Based Glasses

Glassy samples with a composition of 40P2O5&ndash;30V2O5&ndash;(30-x)Li2O&ndash; xK2O, 0<x<30 (mol %) were prepared by the conventional melt quenching technique in two forms of bulk and blown film. X-ray diffraction patterns corroborated the amorphous feature of the samples. Density of samples was investigated by using Archimedes principle. Based on absorption and reflection spectra, indirect a...

Single Crystals of Alkali-aromatic Ion Pairs

Chemiluminescent spectra of alkali-halogen reactions

Using a beam-gas arrangement, we have obtained the chemiluminescence spectra of alkali-halogen reactions at pressures less than I mtorr. The spectra in general are characterized by a broad molecular feature on which are superimposed sharp atomic alkali transitions. Under higher resolution (better than 5 A) the molecular feature consists of a single progression of regularly spaced peaks extendin...

Clustering of divalent cation-vacancy pairs in alkali halide crystals

The analysis of experimental results of the clustering of divalent cation-vacancy pairs by Unger and Perlman is shown here to be unable to distinguish between their model of dimer formation and the earlier model of' Dryden for trimer formation under the conditions where it has been applied. In general, experimental results appear to correspond to overall third order kinetics in the pre-plateau ...

N M R Spectra of Alkali and Halogen Nuclei in Alkali and Halogen Salts

NMR signals of 7Li, 23Na, 35C1, 39K , 79Br, 87Rb and 127I have been measured in various alkali and halogen salt powders relative to well defined aqueous solutions. W ith the known shielding constants of some of these solutions the nuclear magnetic shielding constants of the alkali and chlorine nuclei in crystalline powders were evaluated in the atomic reference scale. The theoretical values of ...