Luminescence study of Eu- and Cu-doped natural alkali feldspars and quartz and some problems of palaeodosimetry

Autor:	G. Hütt, I. Jaek, I. Vassiltchenko
Rok vydání:	1997
Předmět:	Radiation Optically stimulated luminescence Thermoluminescence dating Infrared Chemistry Analytical chemistry Alkali metal Luminescence Instrumentation Quartz Excitation Spectral line Nuclear chemistry
Zdroj:	Radiation Measurements. 27:473-477
ISSN:	1350-4487
DOI:	10.1016/s1350-4487(97)00014-0
Popis:	Natural alkali feldspars and natural and synthetic quartz were activated with Eu- and Cu-ions by means of thermodiffusion. Due to activation, new intensive bands appeared in the X-ray-induced luminescence. On the basis of the study of spectra of emission and excitation of Eu- and Cu-doped alkali feldspars it is shown that Eu 2+ and Cu + recombination centers are created. It is confirmed that optical and thermostimulated depopulation of traps, used in the luminescence dating, lead to electron recombination processes. The infrared part of the optically stimulated luminescence stimulation spectra of alkali feldspars has a single maximum at 880 nm, which does not depend on activators. The stimulation spectra of synthetic and natural quarts are similar and differ from those for alkali feldspars.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::cf64f294726798ca05d6ebc8704789d6 https://doi.org/10.1016/s1350-4487(97)00014-0 Zobrazit plný text záznamu Full Text from ScienceDirect