Multiphoton Ionization of Uracil at 355 nm

Abstract

The mass attenuation coefficients of graphene, MWNTs and, SWNTs have been measured for gamma energy range 356 to 1332 keV from the radioactive sources 60 Co, 133 Ba and 137 Cs using a well calibrated gamma ray spectrometer consisting of a 3´´x 3´´ NaI(Tl) scintillation detector coupled to a PC based 8K nuclear Multi Channel Analyser (MCA). In an interesting way results showed that MWNTs had the highest values of mass attenuation coefficients indicating their potential use as the best shielding material.