Measurement of ionization quenching in plastic scintillators

Plastic scintillators are widely used in high-energy and medical physics, often for measuring the energy of ionizing radiation. Their main disadvantage is their non-linear response to highly radiation, called ionization quenching. This nonlinearity must be modeled corrected applications where an accurate measurement required. We present a new experimental technique granularly measure dependence quenching on energy-deposition density. Based this method, we determine parameters four commonly models two plastic using protons with energies 30 MeV 100 MeV; compare Bayesian approach. also report first model-independent density, providing purely empirical view into