On the thermally stimulated conductivity with small recapture rate and temperature dependent capture cross sections
Thermally stimulated conductivity (TSC) peaks corresponding to small recapture rate and temperature dependent capture cross sections are investigated. The shape of the TSC peak is studied by computing the shape factor μg (x) not only at the fractional intensity x = 1/2 as done conventionally but also at x = 2/3 and 4/5. It is found that for a particular value of x, μg(x) depends on um = E/kTm (E = activation energy, k = Boltzmann’s constant, Tm = peak temperature). A set of expressions based on the shape of the peak has been derived, which in principle can be used to evaluate the activation energy of such TSC peaks. The applicability of those expressions has been tested by considering some numerically computed and experimental TSC peaks.