Thermal quenching of some liquid scintillators
1983
Heating organic liquid scintillator solutions has proven to be an efficient way to improve the time response in some cases. Higher temperatures increase the rates of diffusion-controlled energy transfer processes in dilute solutions and in solutions with relatively high viscosity at room temperature. Under these conditions both the excitation rate and the rate of intermolecular quenching, including concentration-quenching, become faster at higher temperatures. Except for specific concentration-quenching effects, little temperature dependence of the scintillator pulse parameters was observed in the more concentrated or in the less viscous systems.
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