Thermoluminescence characteristics of the 375 °C electron trap in quartz

摘要: The thermoluminescence (TL) glow peak in quartz, which appears the uv at a temperature of 375 \ifmmode^\circ\else\textdegree\fi{}C when ramp heating rate 20 \ifmmode^\circ\else\textdegree\fi{}C/s is used, was measured for emission as well green part spectrum. Two peaks appear separated by about \ifmmode^\circ\else\textdegree\fi{}C. Isothermal decay rates both spectral components were temperatures near peaks. Heating varied to obtain data Hoogenstraaten analyses. Additive dose curves up saturation obtained. Solar-simulator bleaching studies performed. Overall, these suggest kinetic order between first and second order. It found possible computer simulation reproduce faithfully observed use simple interactive model that possesses two separate recombination centers, simultaneously fed electrons from single electron trap transported through conduction band. necessary attribute distribution activation energies trap, allow significant retrapping probability, also invoke presence thermally disconnected trap. analysis comparing theoretical predictions used set program parameters obtaining computer-generated solutions 100 coupled differential-integral equations.These successfully generated initial rise values ranging 0.9 1.1 eV (depending on method employed) an Hoogenstraaten-analysis energy 1.49 with central 1.45 eV. A curve asymmetry shape factor \ensuremath{\mu}=0.46 given theory matched well, suggesting apparent intermediate required uv-TL green-TL separation temperature. generating hole densities during laboratory additive dosing growth developed. This consistent extension prior provides ready explanation midterm fading phenomenon present radiation doses acquired long burial times are compared administered produce same TL signal.