scholarly journals Theory of the F-centers of Coloured Alkali Halide Crystals. Part I Structure of F-Absorption Bands

1949 ◽  
Vol 4 (2) ◽  
pp. 181-192 ◽  
Author(s):  
T. Muto
Keyword(s):  
Alkali Halide ◽  
Absorption Bands ◽  
Alkali Halide Crystals ◽  
F Centers

On the Anderson Transition in Electronic Color Centers Systems in Alkali Halide Crystals

1982 ◽  
Vol 37 (6) ◽  
pp. 613-614
Author(s):  
A. A. Berezin
Keyword(s):  
Alkali Halide ◽  
Random Potential ◽  
High Concentration ◽  
Potential Fluctuations ◽  
Anderson Transition ◽  
Anion Vacancies ◽  
Alkali Halide Crystals ◽  
Localization Condition ◽  
Positively Charged ◽  
F Centers

Abstract An alkali halide crystal with a high concentration of F-centers is considered. If some of these F-centers are ionized into anion vacancies (a-centers) released electrons can be trapped by other F-centers to form F′-centers. It is shown that for each original concentration of F-centers there is a certain concentration of F′-centers for which the random potential fluctuations due to negatively charged F′-centers and positively charged a-centers have enough amplitude to create Anderson localization condition in the system of F-, F′- and a-centers.

Optical Absorption Spectra of KBr:Pb2+ Crystals

1973 ◽  
Vol 51 (21) ◽  
pp. 2242-2248 ◽  
Author(s):  
Robert E. Chaney ◽  
P. W. M. Jacobs ◽  
Taiju Tsuboi
Keyword(s):  
Optical Absorption ◽  
Absorption Spectra ◽  
Alkali Halide ◽  
Room Temperature ◽  
Nonlinear Least Squares ◽  
Energy Separation ◽  
Optical Absorption Spectra ◽  
Absorption Bands ◽  
Fundamental Properties ◽  
Alkali Halide Crystals

The fundamental properties of the absorption spectra of KBr:Pb2+ crystals have been studied at various temperatures from the liquid helium range to room temperature. The observed absorption bands are assigned to the so-called A, B, C, and D' bands by analogy with the absorption bands of other s2-configuration ions in alkali halide crystals. The B, C, and D′ bands overlap but have been resolved into their components by nonlinear least squares analysis. A discussion is given of the energy separation between the B and C bands in Sn2+-, Tl+-, and Pb2+-doped alkali halide crystals.

Photoacoustic Signals from F Centers in Alkali Halide Crystals

1984 ◽  
Vol 53 (5) ◽  
pp. 1621-1623 ◽  
Author(s):  
Katsuyuki Inabe ◽  
Shoichi Nakamura ◽  
Nozomu Takeuchi
Keyword(s):  
Alkali Halide ◽  
Alkali Halide Crystals ◽  
F Centers

On the nature of spontaneous rupture of F centers in alkali-halide crystals

1975 ◽  
Vol 18 (4) ◽  
pp. 541-542
Author(s):  
Yu. M. Annenkov ◽  
V. F. Pichugin ◽  
T. S. Frangul'yan
Keyword(s):  
Alkali Halide ◽  
Spontaneous Rupture ◽  
Alkali Halide Crystals ◽  
F Centers
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