Study of light pulse shape from polystyrene scintillators

The light pulse shape of plastic scintillators with PPO and POPOP additions was measured by a single photon counting technique. When analyzing the results, much attention was given to the beginning of a scintillation burst (start burning). At present this problem was little studied experimentally, and the papers available contradict the theory. The measurements show that de-excitation kinetics is well described by the Forster theory