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SIDEMEN BLIND DATING 2
The charge deficit creates a hole. Possible processes leading to the emptying of trap levels after excitation by light or heat schematic : a, b - Recombination with localised holes above the valence band edge; a the electron is first transferred to an unstable level below the conduction band; b the recombines via the conduction band.
Both electron traps and recombination centres are linked to lattice defects such as oxygen vacancies or foreign atoms e.
It is important to note that various types of defects exist in the different minerals used in luminescence dating and that the energy representation shown in Fig.