Studies on the Luminescence and Scintillation Properties of 9,10-Diphenylanthracene Crystals Grown by Two Methods

In this work, 9,10-diphenylanthracene (DPA) crystals in centimeter size were grown by melt as well as solution methods. The optical properties of both crystals were investigated using X-ray stimulated luminescence spectra. The strongest emission wavelengths are around 454 and 469 nm for DPA-Melt and DPA-Solution, respectively, a longer wavelength than that of stilbene. The scintillation properties were measured with a digitizer and pulse shape discrimination method. The crystal by melt method got the largest light yield of 1.1, as compared to that of stilbene. Meanwhile, the pulse-shape discrimination properties of the crystal by melt method is better than that of the other crystal.