Double excitation transitions inMn2+-doped alkali halides

Frenkel Defects in Alkali Halides

Spectroscopic behavior of halogen photodesorption from alkali halides under UV and VUV excitation

The photostimulated desorption yield of neutral halogen atoms from KI, KBr, and RbI at several temperatures has been measured in the photon energy range between 5 and 30 eV using synchrotron radiation and quadrupole mass spectrometry. The features observed in the desorption yield are slightly correlated with the structures of the absorption spectra of each investigated material. The behavior of...

Dopant aggregation and precipitation in alkali halides doped with divalent ions

We have used reliable computer simulation techniques and accurate lattice and defect interionic potentials to calculate the binding energies of a range of possible structures for clusters involving two or more dopant cations for NaCI, KC1 and KBr containing Mg2+ and for the NaCl : BaZt system. Aggregation mechanisms involving both nn and nnn dipoles have been considered and the relative importa...

Some Elastic Properties and Phase Transitions in Some Alkali Halides Using Interatomic Potential Model

We have predicted the phase transition pressure in some alkali halides using an interatomic potential approach based on rigid ion model. This potential form represents the composite form of the inverse power dependence and exponential dependence of the repulsive energy on interionic distance. Some thermoelastic properties such as second order elastic constants have been calculated using the sam...

Complex metal halides in fused alkali nitrates

The results of this investigation have provided additional information by chemical methods of the extent of association in fused salts. Association effects observed in solubility and rate studies in fused alkali nitrate are shown to be consistent with the assumption that complex ions such as those existing in aqueous solutions are formed between metal ions and halide ions. In addition, the rate...