IACCONI , Philibert

The response of thermally stimulated luminescence (TSL) is investigated theoretically. An original dimensionless treatment is proposed, first to highlight the key dimensionless factors rationalizing the competition between the mechanisms at play during the TSL readout, and second to clean up the approach from any particular values of the...

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The influence of aluminium or niobium doping on the thermoluminescence (TL) of polycrystalline tetravalent tin dioxide is studied. The non-stoichiometry of SnO2−x is characterised by the presence of oxygen vacancies. These vacancies, once or twice ionised behave as donor centres. Introduction of trivalent or pentavalent impurities in the matrix...

A Monte Carlo simulation is proposed to study the mobility reduction due to Coulombic defects for hopping transport in a one-dimensional regular lattice. Hops between energetically equivalent sites and within an exponential distribution of energy levels are considered. In the absence of Coulombic wells, the calculations reproduce the well known...

Thermoluminescence (TL) glow curves of polycrystalline tin dioxide samples exhibit three main peaks below room temperature. Their relative intensities depend on experimental conditions. Especially, they are modified by aluminum doping or by wet air exposition. In SnO2, we suggest that ionised oxygen vacancies and hydroxyl groups are responsible...

The properties of thermoluminescence (TL) observed from various mixed rare earth (RE) phosphate powders La1−x−yCexTbyPO4 are reported. TL peaks appear around −175°C, −135°C, −80°C, −35°C and +25°C and the TL emission spectra of La1−x−yCexTbyPO4 are mainly composed of characteristic line transitions of Tb3+ ions. The results show that the...

Data concerning thermostimulated luminescence (TL) and fluorescence spectra are given for a scries of ruby monocrystals obtained by Verneuil's method, and containing several values of Cr3+concentration, up to 12000 ppm.