Figure 13

The average logarithmic response (LR) is plotted (diamonds) for the 34/66 mixture (example # 2) taken over 25 cm² region for each height and compared with the regression fitted line (solid) . The horizontal axis is the average corrected thickness for each region. The absolute value of the regression slope, 0.546 ± 0.01, is the effective radiation attenuation coefficient for the mixture. Letting p = 0.34, μ_e = 0.34 × μ_w + 0.66 × μ_o = 0.543, which was derived with the values from Table 4.