Abstract
Two scintillation detectors were constructed which are useful in the analysis of prompt and delayed components of light from organic scintillators. A design based on a direct 100 MHz digitisation of signals was used to analyse light from some 'slow' scintillators like naphalene (pure and in toluene) and anthracence. According to the model of the mechanism of scintillation of Voltz and Lopes de Silva the ratio of intensities of prompt (fast) and delayed (slow) components depends upon dE/dx of the heavy charged particle beam. A faster device, equivalent to a 1 GHz digitiser, based on the principle of a single photon counter (SPC) was also constructed and used to analyse the shapes of scintillation pulses from 'fast' scintillators, with a particular reference to NE102A. The paper deals with the construction of the devices, their functioning and cites preliminary results obtained with them.
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