Dose Calculations

According to the TSO calibration paperwork from 6/27/17, at 30.5cm, the exposure rate of the 20Ci source is 17.691 R/hr. The source strength on this date was 9.3Ci.

Reproducibility with 137Cs

$\phi_n(\kappa) = 0.033C_n^2\kappa^{-11/3},\quad \frac{1}{L_0}\ll\kappa\ll\frac{1}{l_0}$