|
|
 |
|
Recommended Lead Sheet Thickness' for Gamma Shielding
|
|
Energy (mev)
|
|
Activity
|
0.2
|
0.5
|
0.8
|
1
|
1.5
|
2
|
2.5
|
3
|
4
|
|
10 mc
|
-0.14
|
-0.36
|
-0.27
|
-0.11
|
0.37
|
0.78
|
1.15
|
1.4
|
1.7
|
|
20 mc
|
-0.09
|
0
|
0.41
|
0.076
|
1.57
|
2.16
|
2.63
|
2.91
|
3.21
|
|
50 mc
|
-0.01
|
0.47
|
1.13
|
1.9
|
3.15
|
4
|
4.57
|
4.9
|
5.2
|
|
100 mc
|
0.06
|
0.82
|
1.99
|
2.77
|
4.34
|
5.38
|
6.05
|
6.41
|
6.71
|
|
200 mc
|
0.1
|
1.17
|
2.67
|
3.63
|
5.54
|
6.77
|
7.52
|
7.92
|
8.21
|
|
500 mc
|
0.17
|
1.94
|
3.57
|
4.78
|
7.12
|
8.6
|
9.47
|
9.91
|
10.21
|
|
1 c
|
0.23
|
1.99
|
4.25
|
5.56
|
8.31
|
9.99
|
10.95
|
11.41
|
11.74
|
|
2 c
|
0.28
|
2.35
|
4.93
|
6.52
|
9.51
|
11.37
|
12.42
|
12.92
|
13.72
|
|
5 c
|
0.36
|
2.81
|
5.82
|
7.85
|
11.09
|
13.21
|
14.37
|
14.91
|
15.21
|
|
10c
|
0.41
|
3.17
|
6.5
|
8.52
|
12.28
|
14.58
|
15.85
|
16.42
|
16.72
|
|
20 c
|
0.47
|
3.52
|
7.18
|
9.39
|
13.48
|
15.98
|
17.23
|
17.93
|
18.23
|
|
50 c
|
0.54
|
3.99
|
8.08
|
10.54
|
16.06
|
17.81
|
19.27
|
19.92
|
20.22
|
|
100 c
|
0.6
|
4.34
|
8.78
|
11.4
|
16.25
|
19.2
|
20.75
|
21.43
|
21.72
|
|
|
Danger Range
|
Plus
|
Plus
|
Plus
|
Plus
|
Plus
|
Plus
|
Plus
|
Plus
|
Plus
|
|
20 cm
|
0.26
|
1.64
|
3.15
|
4.02
|
5.55
|
6.44
|
6.85
|
7.00
|
7.00
|
|
50 cm
|
0.11
|
0.71
|
1.36
|
1.73
|
2.39
|
2.77
|
2.95
|
3.01
|
3.01
|
|
1 M
|
0.00
|
0.00
|
0.00
|
0.00
|
0.00
|
0.00
|
0.00
|
0.00
|
0.00
|
;
|
2 M
|
-0.11
|
-0.71
|
-1.36
|
-1.72
|
-2.39
|
-2.77
|
-2.95
|
-3.01
|
-3.01
|
|
5 M
|
-0.26
|
-1.64
|
-3.16
|
-4.02
|
-5.55
|
-6.44
|
-6.85
|
-7
|
-7
|
|
10 M
|
-0.037
|
-2.35
|
-4.52
|
-5.76
|
-7.94
|
-9.21
|
-9.8
|
-10.01
|
-10.01
|
|
|
Working time hr/day
|
Plus
|
Plus
|
Plus
|
Plus
|
Plus
|
Plus
|
Plus
|
Plus
|
|
|
1
|
-0.17
|
-1.06
|
-2.04
|
-2.6
|
-3.59
|
-4.16
|
-4.42
|
-4.52
|
|
|
2
|
-0.11
|
-0.71
|
-1.36
|
-1.73
|
-2.39
|
-2.77
|
-2.95
|
-3.01
|
|
|
4
|
-0.06
|
-0.35
|
-0.65
|
-0.87
|
-1.2
|
-1.39
|
-1.47
|
-1.51
|
|
|
8
|
0.00
|
0.
|
|
|
