Enhanced energy resolution (22Na, 137Cs and 241Am) and alpha–gamma (241Am + 60Co) and neutron–gamma (241Am–Be) pulse shape discrimination properties of p-terphenyl crystals prepared by modified selective self-seeded vertical Bridgman technique (SSVBT)

p -Terphenyl crystals were grown by modified selective self-seeded vertical Bridgman technique (SSVBT). This new technique has been adopted for nucleation and growth of seed crystals and the bulk crystals were grown by selective self-seeding method. The scintillation properties of the grown p -terphenyl crystal by the aforementioned method have been studied for different radioactive isotopes. Its particle-detection ability has been brought out by pulse-shape discrimination studies for alpha–gamma ( Am 241 + Co 60 ) and neutron–gamma (241Am–Be) sources. The results show that there is an enhancement in the scintillation characteristics of the SSVBT p -terphenyl crystals when compared to the commercially available p -terphenyl crystals.