A TL model based on deep traps competition
| Autor: | Serge Sanzelle, M. Montret, Thierry Pilleyre, Didier Miallier, Jean Fain |
|---|---|
| Přispěvatelé: | Laboratoire de Physique Corpusculaire - Clermont-Ferrand (LPC), Université Blaise Pascal - Clermont-Ferrand 2 (UBP)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS) |
| Rok vydání: | 1994 |
| Předmět: |
Theoretical models
[PHYS.PHYS.PHYS-GEO-PH]Physics [physics]/Physics [physics]/Geophysics [physics.geo-ph] 02 engineering and technology Electron 01 natural sciences Thermoluminescence Anticipation information law.invention law 0103 physical sciences Irradiation 010306 general physics Electron paramagnetic resonance Instrumentation Saturation (magnetic) Radiation Condensed matter physics Chemistry mutualization 021001 nanoscience & nanotechnology territorial intelligence Atomic physics 0210 nano-technology wakefulness Recombination |
| Zdroj: | Radiation Measurements International Specialist Seminar On Thermoluminescence And Electron Spin Resonance Dating. 7 International Specialist Seminar On Thermoluminescence And Electron Spin Resonance Dating. 7, Jul 1993, Krems, Austria. pp.287-291 |
| ISSN: | 1350-4487 |
| DOI: | 10.1016/1350-4487(94)90054-x |
| Popis: | TL appears as a very complex phenomenon. However, some general features are widely presented by TL materials: low TL yields, nonlinear growth with dose (supralinearity or saturation), lower efficiency for high LET particles etc., which are not explained by the well-known classical one-trap band model. In the past, the competition between TL traps and deep (thermally disconnected) traps was proposed in theoretical models accounting for some specific TL features. Arguments are presented here for a more general role of deep traps, in order to get an overall satisfying (at least qualitatively) description of the TL phenomenon either in the irradiation stage (TL or ESR) or in the heating one. A corresponding theoretical model is proposed. It is outlined that the competition between TL and deep traps leads to spatial correlations between electrons in TL traps and recombination centres (trapped holes). On the other hand, occurrence of recombination is taken into account as well in the irradiation step as during the heating one. As a result, on a very simple basis, the model accounts for supralinear behaviour of TL output with dose, non-exponential shape of TL or ESR growth curves, slight temperature shift of glow peaks with dose and scarceness of observed second-order kinetics. |
| Databáze: | OpenAIRE |
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