Optics and Photonics Society of Iran

In this research, colloidal silver NPs were synthesized by creigton method. Then these NPs were placed under 10 kGy dose, gamma-ray irradiated. The produced sample were characterized. The UV-Vis spectrum of these nanoparticles exhibit an absorption peak at 400 nm region. The Raman spectroscopy results indicated the Phonon vibrations of colloidal silver NPs. SEM images showed that these colloidal silver NPs was in nano-scale region. The linear and nonlinear absorption were obtained 2.9 cm^-1 and  by using optical limiting and open aperture z-scan methods, respectively. The nonlinear refraction was calculated . In addition, the mass attenuation coefficients of the synthesized nanoparticles at different energies were measured by the gamma spectroscopy method.