Thermoluminescence in polystyrene

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Abstract
An experimental investigation of thermoluminescence glow curves, thermal quenching cycles and isothermal decay plots in polystyrene has been carried out. It is concluded that the luminescence emission process follows first-order kinetics with respect to the concentration of trapped electrons, and that a quasi-continuous distribution of electron trap activation energies exists. The distribution of occupied electron traps immediately after irradiation peaks at 0.08 eV and stretches from a maximum lower bound of 0.05 eV to an upper cut-off of 0.45 eV. The effects of addition of various organic dopants, the application of an electric field, and increasing irradiation dose on the thermoluminescence emission have been investigated.

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