Artículos de revistas
325 degrees C thermoluminescence peak growth in quartz related to oxygen vacancies
Fecha
1998-01-01Registro en:
Radiation Effects and Defects In Solids. Reading: Gordon Breach Sci Publ Ltd, v. 145, n. 1-2, p. 123-132, 1998.
1042-0150
10.1080/10420159808220028
WOS:000165533100010
2-s2.0-0031640345
8507741729691974
Autor
Universidade de São Paulo (USP)
Universidade Estadual Paulista (Unesp)
Institución
Resumen
The thermoluminescence intensity as a function of gamma-ray dose of the 325 degreesC peak, in quartz grains extracted from sea sediments and from fluvial aeolic dunes, is studied. It is found that the response curve at low doses has a concavity directed opposite to that of quartz grains extracted from archaeological potteries. To explain this behavior a model is proposed here based on oxygen vacancies and [AlO4/h](0) centers. The experimentally observed ESR intensity of E-I'-centers as a function of radiation dose can also be explained by this model.