Effect of Polarization on Recombination of Charge States in an Ionizing Particle Track in Organic Molecular Crystals

The effect of polarization on the energy exchange of charge states in molecular media is studied for the case when no external electric field exists. Measurements of the light yield of organic molecular crystals excited by ionizing radiations are used to verify theoretical hypotheses. This allows us to carry out experiments for a wide range of the initial density of charge states. The polarization process initiates the primary recombination of hot carriers those are generated in the particle track. This reduces the radioluminescence (RL) energy yield of organic molecular crystals with increasing the specific energy loss of an ionizing particle.