Abstract

The accurate measurement of scintillation pulse shapes of anthracene single crystals has been performed by a newly constructed device with the time resolution of nanosecond by means of the sampling method under the pulse height selection and the accumulation of pulse shapes. The distinctive differences between the pulse shapes of luminescence excited by α-, β-particles, γ-ray and UV light pulse were observed. In case of excitation of α-particle, there appeared a characteristic peak which seemed to be superposed on a scintillation peak excited by β- or γ-ray. The dependence of this faster component, that is, the initial spike on the values of d E /d x of α-particle in anthracene crystal has been studied.

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