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Table 4: Distance (in cm) from the 137Cs point source at which scatter to primary ratio, Ds(r)/DP(r) is unity for water and solid phantom materials

Table 4: Distance (in cm) from the <sup>137</sup>Cs point source at which scatter to primary ratio, D<sub>s</sub>(r)/D<sub>P</sub>(r) is unity for water and solid phantom materials