Abstract
1, 3, 5-triphenylbenzene (TPB) single crystal (length 100 mm and diameter 10 mm) has been successfully grown for the first time by the modified vertical Bridgman technique (VBT). This method is developed for the growth of crystals (changing the translation system using gear setup), with enhanced quality. Physical, optical and scintillation properties such as crystalline nature, thermal stability, transmittance, radioluminescence and lifetime were investigated. The polished TPB sample has a good transmission (80%) in the wavelength range between 300 and 1500 nm. The thermal properties of the grown crystal were analyzed by thermogravimetric and differential thermal analyses. Measurements of the refractive index of TPB crystal were made using the prism coupling method at five different wavelengths in the range between 407 and 1551 nm. Birefringence study reveals that the grown crystal has good optical homogeneity. Scintillation properties such as radioluminescence using Sr-90 as a source and decay time were also investigated.
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