Biomedical Engineering Reference
In-Depth Information
Major Radiations,
Mass Difference
Natural
Energies (MeV), and
=
M
-
A
(MeV)
Abundance
Type of
Frequency per
(at. mass - at.
Nuclide
(%)
mass No.)
Decay
Half-Life
Disintegration (%)
21
82
Pb
-
-
: 0.017 max (avg 0.004) (80%)
0.063 max (avg 0.016) (20%)
γ
: 0.047 (4%), Bi X rays
e
-
: 0.030, 0.043
Daughter radiations from
210
Bi,
210
Po
—
-14.73
β
22.3 y
β
21
82
Pb
-
-
: 1.024 max (6%) and others; avg
-
—
-0.15
β
26.8 min
β
β
0.219
γ
: 0.053 (1%), 0.242 (7%), 0.295 (19%), 0.352 (37%),
0.786 (1%)
e
-
: 0.037, 0.049
Daughter radiations from
214
Bi,
214
Po
21
83
Bi
-
-
: 1.162 max (avg 0.389), no
—
-14.79
β
5.012 d
β
γ
21
83
Bi
-
-
: 3.27 max (18%) and others; avg
-
—
-1.19
β
19.9 min
β
β
0.638
: 0.609 (46%), 1.120 (15%),
1.765 (15%)
γ
210
84
Po
—
-15.95
α
138.38 d
α
: 5.305 (100%)
: 0.802 (0.0011%)
γ
21
84
Po
—
-4.47
α
164
µ
s
α
:7.69
γ
: 0.800 (0.010%)
