Several studies have been conducted to measure different type of gamma ray buildup factor for its importance in measuring the dose resulting from Electromagnetic rays use and its shielding In this study gamma ray buildup factor for two shielding materials water (Zeff =7.42) and graphite (Z=6) within the energy range 4-10 MeV and up to 5 thickness mean free path has been studied.
Lead-free piezoelectrics are non-toxic, cheap and environmental friendly materials. Among them Bismuth Sodium Titanate (BNT) which has the chemical formula Bi 0.5 Na 0.5 TiO with a complex A-site perovskite structure. In this study, some modifications on BNT were used to help in applications by forming solid solution with Bi 3 0.5 K 0.5 TiO 3 (BKT) and BaTiO (BT). The BNTbased (xBNT-yBKT-zBT)
In this work single layer antireflection coating of ZnO thin film has been designed and fabrication on glass and PSi substrates using pulse laser ablation (PLA) and spin coating techniques.Mainly, the work, divided into two parts, first: single antireflection of ZnO thin film using modified characteristics matrix to satisfy zero reflection condition theoretically.
