Light yield nonproportionality or organic and inorganic scintillators exposed to alpha rays of various energy

Abstract

The influence of entrance surface for radiation state of Csl: TI, Csl: Na, stilbene and p-terphenyl scintillators on non-proportionality of light yield to the alpha-particle energy has been studied. It has been shown that formation of disrupted near-surface layer results in increasing microheterogeneity of specific light yield over the crystal surface and depth. The organic and alkali-halide scintillator samples show considerable specific light output variations depending on alpha-particle energy. These samples have essential structural disruptions of entrance surface for radiation. A correlation is observed between the non-proportionality and energy resolution: the less non-proportionality is, the less is the resolution value within the range of alpha-particle energy.