The transmission gamma-ray measurements are composed of two parts dealing with
the two gamma-ray sources. The first part was using a 2 mCi Cs-137 source with all samples 49
listed in Table 3.1, while the second part was using a 1.2 mCi Co-60 source. The same method
was applied for both parts.
The experimental arrangement for the gamma-ray measurements is given in Figure 3.5.