and a Si(Li) solid state detector with 155 eV resolution at5.9 keV was employed. At first, count is performed without samples in order to designate how much radiation the samples absorb. Later, samples are irradiated and absorptions per unit thickness are calculated via the expression below:
Here; I_0: Beam intensity measured in the absence of the sample, I_x: Beam intensity passing through the sample of thickness x. This way I_0, I_x, and (I_x/I_0) rates at different energy levels are calculated and permeability rate values are determined.