Таблица 1
Толщина защиты из
свинца (в мм) в зависимости от кратности
ослабления и энергии гамма-излучения
(широкий пучек; p
= 11,34 г/см3 )
Кратность ослабления
k |
Энергия гамма-излучения
hg
, Мэв |
0.1 |
0.2 |
0.3 |
0.4 |
0.5 |
0.6 |
0.7 |
0.8 |
0.9 |
1.0 |
1.5 |
0.5 |
1 |
1.5 |
2 |
2 |
3 |
4 |
6 |
7 |
8 |
2 |
1.0 |
2 |
3 |
4 |
5 |
7 |
8 |
10 |
11.5 |
13 |
5 |
2 |
4 |
6 |
9 |
11 |
15 |
19 |
22 |
25 |
28 |
8 |
2 |
5 |
8 |
11 |
15 |
19.5 |
23.5 |
28 |
32 |
35 |
10 |
3 |
5.5 |
9 |
13 |
16 |
21 |
26 |
30.5 |
35 |
38 |
20 |
3 |
9 |
11 |
15 |
20 |
26 |
32.5 |
38.5 |
44 |
49 |
30 |
3.5 |
7 |
11.5 |
17 |
23 |
30 |
36.5 |
43 |
49.5 |
55 |
40 |
4 |
8 |
13 |
18 |
24 |
31 |
38 |
45 |
52 |
58 |
50 |
4 |
8.5 |
14 |
19.5 |
26 |
32.5 |
39.5 |
46 |
53 |
60 |
60 |
4.5 |
9 |
14.5 |
20.5 |
27 |
34.5 |
42 |
49.5 |
56 |
63 |
80 |
4.5 |
10 |
15.5 |
21.5 |
28 |
37 |
45 |
53 |
60 |
67 |
100 |
5 |
10 |
16 |
23 |
30 |
39.5 |
47 |
55 |
63 |
70 |
200 |
6 |
12.5 |
19 |
26 |
34 |
44 |
53 |
63 |
72 |
80 |
500 |
6.5 |
14 |
22 |
31 |
40 |
51 |
61 |
72 |
82 |
92 |
1000 |
7 |
15 |
24 |
33 |
44 |
57 |
69.5 |
81 |
92 |
102 |
2000 |
8.5 |
17 |
27 |
38 |
50 |
63 |
76 |
88 |
100 |
11 |
5000 |
9 |
19 |
30 |
42 |
55 |
70 |
85 |
89 |
112 |
124 |
8000 |
10 |
20 |
31.5 |
44 |
57 |
73.5 |
90 |
104 |
118 |
130 |
104 |
10.5 |
21 |
33 |
45.5 |
59 |
75 |
91 |
106 |
120 |
133 |
2*104 |
11 |
22 |
35 |
48.5 |
63 |
80 |
97 |
113 |
128 |
142 |
5*104 |
11.5 |
23.5 |
37 |
52 |
69 |
87 |
105 |
123 |
140 |
156 |
1*105 |
11.5 |
24 |
38 |
54 |
72 |
92 |
111 |
130 |
148 |
165 |
Продолжение
таблицы
1
Кратность ослабления
k |
Энергия гамма-излучения
hg
, Мэв |
1,25 |
1,5 |
1,75 |
2 |
2,2 |
3 |
4 |
6 |
8 |
10 |
1,5 |
9,5 |
11 |
12 |
12 |
12 |
13 |
12 |
10 |
9 |
9 |
2 |
15 |
17 |
18,5 |
20 |
20 |
21 |
20 |
16 |
15 |
13,5 |
5 |
34 |
38 |
41 |
43 |
44 |
46 |
45 |
38 |
33 |
30 |
8 |
42 |
48 |
52,5 |
55 |
57 |
59 |
58 |
50 |
43 |
38 |
10 |
45 |
51 |
56 |
59 |
61 |
65 |
64 |
55 |
49 |
42 |
20 |
58 |
66 |
72 |
76 |
78 |
83 |
82 |
71 |
63 |
56 |
30 |
65 |
73 |
80 |
85 |
88 |
93 |
92 |
80 |
72 |
63 |
40 |
68,5 |
78 |
86 |
91 |
91 |
100 |
99 |
87 |
78 |
68 |
50 |
72 |
82 |
90 |
96 |
100 |
106 |
105 |
92 |
83 |
73 |
60 |
75 |
85 |
95 |
101 |
104 |
110 |
109 |
97 |
87 |
77 |
80 |
80 |
92 |
101 |
107 |
111 |
117 |
116 |
104 |
94 |
82 |
100 |
84,5 |
96,5 |
106 |
113 |
117 |
122 |
121 |
109 |
99 |
87 |
200 |
96,5 |
111 |
122 |
129 |
134 |
140 |
138 |
126 |
114 |
102 |
500 |
113 |
129 |
142 |
150 |
154 |
163 |
161 |
149 |
133 |
119 |
1000 |
123 |
141 |
155 |
165 |
170 |
160 |
178 |
165 |
151 |
133 |
2000 |
135 |
154 |
168 |
179 |
185 |
197 |
195 |
181 |
166 |
148 |
5000 |
149 |
170 |
186 |
198 |
205 |
219 |
217 |
203 |
185 |
166 |
8000 |
158 |
180 |
196 |
208 |
215 |
230 |
229 |
215 |
196 |
175 |
104 |
161 |
183 |
201 |
213 |
221 |
235 |
234 |
220 |
201 |
180 |
2*104 |
172 |
195 |
214 |
227 |
235 |
251 |
250 |
236 |
217 |
195 |
5*104 |
138 |
214 |
233 |
247 |
255 |
273 |
272 |
258 |
237 |
215 |
1*105 |
201 |
227 |
247 |
262 |
270 |
289 |
289 |
275 |
253 |
229 |
|