E35 MEV (b= 432")
a)

Ee MEV (be Sor")

ne ar

E =O (be 6")

ry (IN)

Fig. 7

Fraction, K, of Source :notons =intsring

Detector Versus Off-Axis Distance of Point Source

for z= 5 ine, a = 4 in.

17

Select target paragraph3