Unidirectional growth of pure and composite t-stilbene single crystals for scintillator applications

The virgin and equal weight percent composed (bibenzyl & diphenylacetylene) of t-stilbene single crystals were successfully grown by the solvent evaporation adopted Sankaranarayan-Ramasamy method. The structural parameters were exemplified by the powder X-ray diffractometer, all the crystal samples have to be crystallized on monoclinic crystal system. The characteristic functional groups were illustrated through micro-Raman spectral measurements. The photo emissive properties of the pure and composite crystals have been analyzed through photoluminescence and X-ray excited studies with the excitation of 275 nm. The scintillation characterizations were evolved by X-ray luminescence and scintillation decay time, pulse shape discrimination studies using ¹³⁷Cs and ²⁵²Cf as a radiation sources. The t-stilbene:Bibenzyl composite crystals has the better FOM value than diphenylacetylene composed t-stilbene single crystal.