Theory of the Dielectric Constants of Alkali Halide Crystals

1958 ◽  
Vol 112 (1) ◽  
pp. 90-103 ◽  
Author(s):  
B. G. Dick ◽  
A. W. Overhauser
Keyword(s):  
Alkali Halide ◽  
Dielectric Constants ◽  
Alkali Halide Crystals

Photoelastic behaviour and interionic potentials in alkali halide crystals

1981 ◽  
Vol 59 (10) ◽  
pp. 1359-1366 ◽  
Author(s):  
Jai Shanker ◽  
T. S. Verma ◽  
A. Cox ◽  
M. J. L. Sangster
Keyword(s):  
Shell Model ◽  
High Frequency ◽  
Alkali Halide ◽  
Dielectric Constants ◽  
Critical Test ◽  
Photoelastic Data ◽  
Comparison Of The Results ◽  
Alkali Halide Crystals ◽  
Derivatives Of ◽  
Photoelastic Behaviour

In order to make a critical test of some recently developed interionic potentials based on the shell model, the photoelastic behaviour of the alkali halide crystals has been investigated. Values of the strain derivatives of the static and high-frequency dielectric constants have been calculated from sets of potentials due to Catlow et al., Sangster et al., and Sangster and Atwood. A comparison of the results obtained with available experimental photoelastic data demonstrates the superiority of the second set of potentials of Catlow et al.

scholarly journals Optical Properties of Alkali Halides in Ultraviolet Spectral Regions

Optics ◽  
2019 ◽  
Vol 1 (1) ◽  
pp. 18-31 ◽  
Author(s):  
Khagendra P. Bhandari
Keyword(s):  
Alkali Halide ◽  
Optical Constants ◽  
Complex Function ◽  
Alkali Halides ◽  
Current Theory ◽  
Dielectric Constants ◽  
The Real ◽  
Band Transition ◽  
Alkali Halide Crystals ◽  
Kronig Relation

The optical reflectance spectra of alkali halide crystals KI and RbI were measured over the energy range of 4.14 to 6.91 eV. Both single crystal and poly-crystal samples were used to accomplish this task. The phase θ ( ω ) was computed using the Kramers-Kronig relation between the real and imaginary parts of the complex function, ln r = ln | r | + i θ ( ω ) . Subsequently, the optical constants n and κ were determined from the Fresnel reflectivity equation. The real and imaginary parts of dielectric constants ε 1 and ε 2 were then calculated using n and κ. The optical absorption spectra of the crystal have also been measured in these spectral regions. The spectra agree reasonably well with the current theory concerning exciton peaks. In addition, a shoulder was found in the spectra similar to those previously seen and associated with the band-to-band transition in the alkali iodides.

Anion polarizability functions in alkali halide crystals

1997 ◽  
Vol 92 (6) ◽  
pp. 1029-1033
Author(s):  
A. BATANA ◽  
J. BRUNO ◽  
R.W. MUNN
Keyword(s):  
Alkali Halide ◽  
Alkali Halide Crystals

Effect of the activator impurity on the scintillation yield in alkali-halide crystals

2014 ◽  
Vol 252 (2) ◽  
pp. 380-385 ◽  
Author(s):  
A. Gektin ◽  
S. Gridin ◽  
S. Vasyukov ◽  
A. Vasil'ev ◽  
A. Belsky ◽  
...  
Keyword(s):  
Alkali Halide ◽  
Alkali Halide Crystals

scholarly journals Optical properties of alkali halide crystals

2020 ◽  
Vol 1697 ◽  
pp. 012253
Author(s):  
I Kaplunov ◽  
G Kropotov ◽  
V Rogalin ◽  
A Shahmin
Keyword(s):  
Optical Properties ◽  
Alkali Halide ◽  
Alkali Halide Crystals

Limiting Optical Frequencies in Alkali Halide Crystals

1961 ◽  
Vol 123 (6) ◽  
pp. 1968-1976 ◽  
Author(s):  
A. A. Maradudin ◽  
G. H. Weiss
Keyword(s):  
Alkali Halide ◽  
Alkali Halide Crystals
Sign in / Sign up

Export Citation Format

Share Document