Four
30mCl^(125)1
point sources are arranged at the corners of a 2 m square (in air as depicted in the Figure). What is the exposure rate at the center (P) of the square? Hints: Use Table of Gamma-ray constants (Table 7-7) and ignore attenuation in air. TARLE 7-7, Gamma-Kay Comstant, F (K/h-CI at 1 m) for 1 Ci of Selected Radionactioles