Long-Time Relaxation of Stress-Induced Birefringence of Microcrystalline Alkali Halide Crystals
نویسندگان
چکیده
منابع مشابه
Relaxation processes of the triplet state of self-trapped excitons in alkali-halide crystals
— The spin lattice relaxation, radiative and microwave excitation processes of the triplet self-trapped exciton hâve been studied in alkali chlorides and bromides by measuring the transient response of the X-ray excited luminescence to résonant puise microwave. The model is applied to magnetic circular polarization data. The symmetry of dominant exciton-phonon coupling are discussed.
متن کاملClustering 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 ...
متن کاملOptimal Control of Laser Induced Transient Birefringence in Liquid Crystals
Optimal control theory is applied to design a laser pulse to produce an anisotropic change of the refraction index in the vicinity of the isotropic-nematic phase transition in liquid crystals. The laser induced birefringence originates from the orientational anisotropy induced by the laser eld that is enhanced signiicantly due to the excluded volume eeect. The shape of the optimal pulse is anal...
متن کاملOptical properties of alkali halide crystals from all-electron hybrid TD-DFT calculations.
We present a study of the electronic and optical properties of a series of alkali halide crystals AX, with A = Li, Na, K, Rb and X = F, Cl, Br based on a recent implementation of hybrid-exchange time-dependent density functional theory (TD-DFT) (TD-B3LYP) in the all-electron Gaussian basis set code CRYSTAL. We examine, in particular, the impact of basis set size and quality on the prediction of...
متن کاملStructure of Rare-earth/Alkali Halide Complexes
für Naturforschung in cooperation with the Max Planck Society for the Advancement of Science under a Creative Commons Attribution 4.0 International License. Dieses Werk wurde im Jahr 2013 vom Verlag Zeitschrift für Naturforschung in Zusammenarbeit mit der Max-Planck-Gesellschaft zur Förderung der Wissenschaften e.V. digitalisiert und unter folgender Lizenz veröffentlicht: Creative Commons Namen...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Molecules
سال: 2018
ISSN: 1420-3049
DOI: 10.3390/molecules23040757