Biomedical Engineering Reference
In-Depth Information
40.
An atmosphere contains the numbers of atoms per liter shown
in Table 4.7.
(a)
Calculate the PAEC in J m
-3
.
(b)
Calculate the EEDC.
(c)
Calculate the equilibrium factor.
Tab l e 4 . 7
Problem 40
Atoms L
-1
Nuclide
222
Rn
10
5
2.34
×
218
Po
52
214
Pb
407
214
Bi
214
214
Po
2
4.9
Answers
0.0564 y
-1
2.
16.
(a)
1.97 GBq
5.
(a)
6.90 h
(b)
1.00 GBq
0.0506 d
-1
(b)
9.94 h
21. (a)
10
12
10
18
Bq kg
-1
6.
(a)
4.00
×
(b)
2.59
×
10
12
10
10
(b)
1.62
×
(c)
2.5
×
10
7
MeVm
-3
7.
72.5 d
30. (a)
9.15
×
10.
10
-8
g
(b)
2630 Bqm
-3
1.75
×
12. (a)
10
5
Ci
(c)
0.29
1.30
×
(b)
28.9 g
31.
(a)
10
8
MeVm
-3
1.68
×
(c)
1280 d
(b)
4830 Bqm
-3
13.
(a)
0.575 Wg
-1
36.
1.25 WL
(b)
18.8 kW
37.
10.4 WLM
120 MBqm
-3
14.
39.
(a)
0.481 WL
10
10
Bq
10
10
MeV
15.
(a)
3.13
×
(b)
1.50
×
10
10
Bq
10
-4
L
-1
(b)
3.13
×
(c)
2.19
×
48.1 pCi L
-1
(c)
1.56
µ
g
(d)
10
9
Bq
(d)
2.90
×
(e)
10.6 WLM
