Study of the Effect of Gamma rays on the Optical Bandgap of Poly (Methyl Methacrylat) (PMMA) Films

Abstract

In this research, We study the effect of irradiation by gamma rays from (Cs137)source on the transmission, absorption coefficient and optical energy gap of the indirect,allowed, forbidden transition for poly (methyl methacrylat ) (PMMA) films prepared by usingcasting technique in room temperature. the absorption and transmission spectra has beenrecorded in the wave length rang (300-٩٠٠) nm .