Two peaks at 355 and 525K appear in the thermoluminescence spectrum of polycrystalline spinel X-irradiated at room temperature. They are due to thermally released electrons which recombine at several impurity centres as well as at V-centres.The influence of defects arising from the structural disorder and the non-stoichiometry of samples is discussed.

Effect of r-Irradiation on I-V.Dipoles in KC1 Crystal 1)

No abstract

This work presents several thermoluminescence (TL) dates of six archaeological sites located in the Andean valley of the Chacabuco River, central Patagonia. We discuss the advantages of this method to assess the chronology of human occupations, employing samples of lithic artefacts with evidence of fire exposure from surface contexts in the area. We compare the results with stratigraphic archaeological dating by 14C. We discuss these results in the context of previously formulated hypotheses on the past behaviour of the human population in this area.