Preparation, Characterization, And Physical Properties Of A Nanostructured Materials Of Silver ( Nanoparticles And Nanocomposites )

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1- Introduction.
Preparation, characterization, and physical properties of a nanostructured materials of silver (nanoparticles and nanocomposites) have been the subject of various researcher in many scientific laboratories during the past years for many studies and it has been also established that size, stability, color, shape, and properties depend on the method of preparation (radiation, photochemical, electrochemical, and chemical) as well as experimental factors such as [reactants], [stabilizer and/or capping agents], temperature, order of mixing of reactants, presence of stabilizers and capping agents and even on the addition rate of reducing agents [1–12].
The properties of such nanocomposites can further be improved through various treatments like, annealing, UV-irradiation and Gamma irradiation is one of the extensively used tools to alter the structural, optical properties [13, 14], Many of reports were used gamma irradiation to synthesis the Ag nanoparticles in PVA [15,16], and the other literature were prepared Ag-PVA nanocomposite films and then irradiated with gamma at doses (25, 50, 75, 100 KGy) [17,]. According to this literature the absorption peak intensity at 427 nm for silver nanoparticles is increased with increasing the gamma doses, until the higher doses 100 KGy, its decrease and the reason for this behaviour at higher doses the polyvinyl alcohol will suffer degradation.
But in our literature, we are introducing a new explanation for

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