A generalized rule of average for glow peak temperature of ternary alkali halide systems
The anion composition dependence of the characteristic glow peak temperature of europium doped KCl0.50KBr0.25RbX0.25:Eu2+ (X=Cl, Br) mixed crystals are studied. Each material shows a thermoluminescence glow curve consisting of two main glow peaks with a temperature is between KCl:Eu2+ and KBr:Eu2+....
| Autores: | , , |
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| Formato: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2011 |
| País: | México |
| Recursos: | Universidad de Sonora |
| Repositorio: | Redalyc-USON |
| OAI Identifier: | oai:redalyc.org:57019378009 |
| Acesso em linha: | https://www.redalyc.org/articulo.oa?id=57019378009 |
| Access Level: | acceso abierto |
| Palavra-chave: | Física, Astronomía y Matemáticas color centers Defects in solids thermoluminescence ternary solid solutions |
| Resumo: | The anion composition dependence of the characteristic glow peak temperature of europium doped KCl0.50KBr0.25RbX0.25:Eu2+ (X=Cl, Br) mixed crystals are studied. Each material shows a thermoluminescence glow curve consisting of two main glow peaks with a temperature is between KCl:Eu2+ and KBr:Eu2+. The most intense is related to the F center destruction as occur in the case of KCl:Eu2+ crystals and its characteristic temperature depends strongly on the halogen composition. This behavior confirms that the temperature of the F-H centers recombination in this type of materials depends more on the proportion of anions. From these results, a generalized rule to obtain the temperature from averaging the characteristic temperature as function of the composition is discussed. |
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