COLOR CENTERS IN CsCl-TYPE ALKALI HALIDES

Journal Article · Thu Mar 01 04:00:00 EST 1962 · Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D

DOI:https://doi.org/10.1103/PhysRev.125.1584· OSTI ID:4796002

Rabin, H; Schulman, J H

A study of x-ray-induced color centers in the CsCltype alkali halides is made at room, liquid nitrogen. and liquid helium temperatures. The gross features of this coloration are similar to those observed in NaCl-type halides, namely a principal absorption band in the visible portion of the spectrum with other absorptions at both longer and shorter wavelengths. The absorption spectra observed vary with the temperature of irradiation; the bands show characteristic thermal shtfting and broadening, bleach under both thermal and optical excitation, and demonstrate much of the usual color-center behavior. At the same time some characteristics of the cesium halides appear to be unique, in particular the multiplicity in structure which makes its appcarance in the principal absorption bands of CsCl and CsBr at liquid helium temperature. Since the principal absorption gives evidence of being associated with the F center, one possible explanation of the component structure is that it arises from higher excited states of the F center. (auth)

• Research Organization: Naval Research Lab., Washington, D.C.
• NSA Number: NSA-16-013799
• OSTI ID: 4796002
• Journal Information: Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D, Journal Name: Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D Vol. Vol: 125; ISSN PHRVA
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

ABSORPTION
ALKALI METALS
BLEACHING
CESIUM BROMIDES
CESIUM CHLORIDES
COLOR
COLOR CENTERS
CRYSTALS
DEFECTS
ENERGY LEVELS
EXCITATION
F CENTERS
HALIDES
INFRARED RADIATION
IRRADIATION
LATTICES
LIGHT
LOW TEMPERATURE
PHYSICS
SODIUM CHLORIDES
SPECTRA
SPECTRAL SHIFT
STABILITY
TEMPERATURE
ULTRAVIOLET RADIATION
VACANCIES
X RADIATION