Electron Defect Centres in Alkali Halides
نویسندگان
چکیده
منابع مشابه
The Growth of Colloidal Centres in Irradiated Alkali Halides
This article summarises the principal results of a theory of the growth of alkali metal colloids in irradiated alkali halides. The theory draws upon the analogy with void growth in irradiated metals. The alkali halides are very susceptible to radiation damage in the halogen sub-lattice when exposed to ionising radiation the primary products being F-centres and interstitial halogen atoms (H-cent...
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The F center is the prototype of the excess electron color centers. Although many of the properties of this center are well understood, some interesting questions still remain concerning the nature of its relaxed excited state. The influence of uniaxial stress upon the luminescences has yielded new evidence for the diffuse nature of this state. A contrast will be made of the influence of uniaxi...
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Alkali halides and alkaline earth halides are strongly ionic compounds that solidify as crystals. The name for the alkali elements (Li, Na, K, Rb and Cs) comes from the Arabic word alqili (ashes of the salt-wort plant that was once used as a source of sodium and potassium for making glass from sand). The name for the halogen elements (F, Cl, Br, I—and the rare radioactive element astatine) come...
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The phenomenon of secondary emission from alkali halides is studied in transmission. This allows the variation of one more parameter (thickness) than in conventional reflection studies. An empirical method based on published results of scattering by thin foils is used to determine the spatial dependence of the internal electron excitation function. The results of the Monte Carlo calculations pr...
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ژورنال
عنوان ژورنال: Nature
سال: 1949
ISSN: 0028-0836,1476-4687
DOI: 10.1038/164653b0