TABLE 5
EXPOSURE RATES - EXPONENTIALLY DISTRIBUTED SOURCE*
A.
Total Exposure Ratef
at =.1
ae
Le
(MeV)
225
. 364
50
. 662
275
1.0
1.25
\(m)
0
4.06(-3)
6.34 {-3)
8.73 (-3)
1.16(-2)
1.31 (-2)
1.72 (-2}
2.11{-2)
*Source strength =
wl
3.91(-3)
6.31 (-3)
8.70(-3)
1.15 (-2)
1.31(-2)
1.71 {(-2)
2.09(-2)
1
3.91
6.13
8.47
1.12
1.27
1. 67
2.02
(-3)
(-3)
(-3)
(-2)
(-2)
(-2)
{-2)
3
3. 68 (-3)
5.86(-3)
8.07 (-3}
1.07 (-2)
1.21 (-2)
1.59(-2)
1. 96(-2)
1 y per cm? -sec.
tTMeV/gm-sec = 65.9 tr/hr;
1 ur/hr = 7.65 mrad/yr.
#q is the reciprocal of the relaxation length which defines the
depth distribution (see page 14).
5
3.53 (-3}
5.65 (-3)
7.78(-3)
1.03 (-2)
1.17 (-2)
1.54 (-2)
1.89(-2)
10
30
160
300
3.32 (+3)
5.20(-3)
7.18 (-3)
9.50(-3)
1.08 (+2)
1.42 (-2)
1.76 (-2)
2.23 {-3)
3.99{-3)
6.33 (-3)
7.38 (-3)
8.37 (-3)
1.11 (-2)
1.39(-2)
8. 63 (-4)
1.89 (-3)
2.70(-3)
3.72(-3)
4,.25(-3)
5.87 (-3)
7.43 (-3)
1. 20 (-4)
2.84 (-4)
4.52 (-4)
7.04 (-4)
8.53 (-4)
1.33 (-3)
1.86 (-3)