Radionuclide

Half-life

Electronic emission

Photon emission

Type

^a Energy (MeV)

^b Emission
probability
(per 100
disintegrations)

Type

Energy (MeV)

Emission
probability
(per 100
disintegrations)

Tritium (³H)

*12.33 (6) years

*β^-

*0.006^(I)
(max: 0.019)

*100

Carbon-11 (¹¹C)

20.385 (20) min

β ⁺

0.386^(I)
(max: 0.960)

99.8

γ

0.511

199.5^(II)

Nitrogen-13 (¹³N)

9.965 (4) min

β ⁺

0.492^(I)
(max: 1.198)

99.8

γ

0.511

199.6^(II)

Oxygen-15 (¹⁵O)

122.24 (16) s

β ⁺

0.735^(I)
(max: 1.732)

99.9

γ

0.511

199.8^(II)

Fluorine-18 (¹⁸F)

109.77 (5) min

β ⁺

0.250^(I)
(max: 0.633)

96.7

γ

0.511

193.5^(II)

Phosphorus-32 (³²P)

14.26 (4) days

β ^-

0.695^(I)
(max: 1.71)

100

Phosphorus-33 (³³P)

25.34 (12) days

β ^-

0.076^(I)
(max: 0.249)

100

Sulphur-35 (³⁵S)

87.51 (12) days

β ^-

0.049^(I)
(max: 0.167)

100

Chromium-51 (⁵¹Cr)

27.7025 (24) days

e_A

0.004

67

X
γ

0.005
0.320

22.3
9.9

Cobalt-56 (⁵⁶Co)

77.27 (3) days

e_A
β ⁺

0.006
0.179^(I)
0.631^(I)

47
0.9
18.1

X
γ

0.006-0.007
0.511
0.847
1.038
1.175
1.238
1.360
1.771
2.015
2.035
2.598
3.202
3.253

25
38.0^(II)
100.0
14.1
2.2
66.1
4.3
15.5
3.0
7.8
17.0
3.1
7.6

Cobalt-57 (⁵⁷Co)

271.79 (9) days

e_A ^+ce
ce

0.006-0.007
0.014
0.115
0.129

177.4
7.4
1.8
1.3

X
γ

0.006-0.007
0.014
0.122
0.136
0.692

57
9.2
85.6
10.7
0.15

Cobalt-58 (⁵⁸Co)

70.86 (7) days

e_A
β ⁺

0.006
0.201^(I)

49.4
14.9

X
γ

0.006-0.007
0.511
0.811
0.864
1.675

26.3
29.9^(II)
99.4
0.7
0.5

Cobalt-60 (⁶⁰Co)

5.2714 (5) years

β ^-

0.096^(I) (max: 0.318)

99.9

γ

1.173
1.333

100.0
100.0

Cobalt-56 (⁵⁶Co)

77.27 (3) days

e_A
β ⁺

0.006
0.179^(I)
0.631^(I)

47
0.9
18.1

X
γ

0.006-0.007
0.511
0.847
1.038
1.175
1.238
1.360
1.771
2.015
2.035
2.598
3.202
3.253

25
38.0^(II)
100.0
14.1
2.2
66.1
4.3
15.5
3.0
7.8
17.0
3.1
7.6

Cobalt-57 (⁵⁷Co)

271.79 (9) days

e_A ^+ce
ce

0.006-0.007
0.014
0.115
0.129

177.4
7.4
1.8
1.3

X
γ

0.006-0.007
0.014
0.122
0.136
0.692

57
9.2
85.6
10.7
0.15

Cobalt-58 (⁵⁸Co)

70.86 (7) days

e_A
β ⁺

0.006
0.201^(I)

49.4
14.9

X
γ

0.006-0.007
0.511
0.811
0.864
1.675

26.3
29.9^(II)
99.4
0.7
0.5

Cobalt-60 (⁶⁰Co)

5.2714 (5) years

β ^-

0.096^(I) (max: 0.318)

99.9

γ

1.173
1.333

100.0
100.0

Gallium-66 (⁶⁶Ga)

9.49 (7) hours

e_A
β ⁺

0.008
0.157^(I)
0.331^(I)
0.397^(I)
0.782^(I)
1.90^(I)

21
1
0.7
3.8
0.3
50

X
γ

0.009-0.010
0.511
0.834
1.039
1.333
1.919
2.190
2.423
2.752
3.229
3.381
3.792
4.086
4.295
4.807

19.1
112^(II)
5.9
37
1.2
2.1
5.6
1.9
23.4
1.5
1.5
1.1
1.3
4.1
1.8

Gallium-67 (⁶⁷Ga)

3.2612 (6) days

e_A
ce

0.008
0.082-0.084
0.090-0.092
0.175

62
30.4
3.6
0.3

X
γ

0.008-0.010
0.091-0.093
0.185
0.209
0.300
0.394
0.888

57
42.4
21.2
2.4
16.8
4.7
0.15

Germanium-68 (⁶⁸Ga) in equilibrium with Gallium-68 (⁶⁸Ga)

270.82 (27) days
(⁶⁸Ga: 67.629 (24) min)

e_A
β ⁺

0.008
0.353^(I)
0.836^(I)

42.4
1.2
88.0

X
γ

0.009-0.010
0.511
1.077

44.1
178.3
3.0

Gallium-68 (⁶⁸Ga)

67.629 (24) min

e_A
β ⁺

0.008
0.353^(I)
0.836^(I)

5.1
1.2
88.0

X
γ

0.009-0.010
0.511
1.077

4.7
178.3
3.0

Krypton-81m (⁸¹mKr)

13.10 (3) s

ce

0.176
0.189

26.4
4.6

X
γ

0.012-0.014
0.190

17.0
67.6

Rubidium-81 (⁸¹Rb)

in equilibrium with Krypton-81m (^81mKr)

4.576 (5) hours
(^81mKr: 13.10 (3) s)

e_A
ce

β ⁺

0.011
0.176
0.188
0.253^(I)
0.447^(I)

31.3
25.0
4.3
1.8
25.0

X
γ

0.013-0.014
0.190
0.446
0.457
0.510
0.511
0.538

57.2
64
23.2
3.0
5.3
54.2
2.2

Strontium-89 (⁸⁹Sr)

in equilibrium with Yttrium-89 (^89mY)

50.53 (7) days
(^89mY: 16.06 (4) s)

β ^-

0.583^(I) (max: 1.492)

99.99

γ

0.909

0.01

Strontium-90 (⁹⁰Sr)

in equilibrium with Yttrium-90 (⁹⁰Y)

28.74 (4) days
(⁹⁰Y: 64.10 (8) hours)

β ^-

0.196^(I) (max: 0.546)

100

Yttrium-90 (⁹⁰Y)

64.10 (8) hours

β ^-

0.934 ^(I) (max: 2.280)

100

Molybdenum-99 (⁹⁹Mo) in equilibrium with Technetium-99m (^99mTc)

65.94 (1) hours
(^99mTc: 6.01 (1) hours)

β ^-

0.133^(I)
0.290^(I)
0.443^(I)

16.4
1.1
82.4

X
γ

0.018-0.021
0.041
0.141
0.181
0.366
0.740
0.778

3.6
1.1
4.5
6
1.2
12.1
4.3

Technetium-99m (^99mTc)

6.01 (1) hours

ce
e_A
ce

0.002
0.015
0.120
0.137-0.140

74
2.1
9.4
1.3

X
γ

0.018-0.021
0.141

7.3
89.1

Technetium-99 (⁹⁹Tc)

2.11 x 10⁵ years

β ^-

0.085^(I) (max: 0.294)

100

Ruthenium-103 (¹⁰³Ru) in equilibrium with Rhodium-103m (^103mRh)

39.26 (2) days
(^103mRh: 56.114 (20) min)

e_A+ ce
ce
β ^-

0.017
0.030-0.039
0.031^(I)
0.064^(I)

12
88.3
6.6
92.2

X
γ

0.020-0.023
0.497
0.610

9.0
91
5.8

Indium-110 (¹¹⁰In)

4.9 (1) hours

e_A

0.019

13.4

X
γ

0.023-0.026
0.642
0.658
0.885
0.938
0.997

70.5
25.9
98.3
92.9
68.4
10.5

Indium-110m (^110mIn)

69.1 (5) min

e_A
β ⁺

0.019
1.015^(I)

5.3
61

X
γ

0.023-0.026
0.511
0.658
2.129

27.8
123.4^(II)
97.8
2.1

Indium-111 (¹¹¹In)

2.8047 (5) days

e_A
ce

0.019
0.145
0.167-0.171
0.219
0.241-0.245

15.6
7.8
1.3
4.9
1.0

X
γ

0.003
0.023-0.026
0.171
0.245

6.9
82.3
90.2
94.0

Indium-114m (^114mIn) in equilibrium with Indium-114 (¹¹⁴In)

49.51 (1) days
(¹¹⁴In: 71.9 (1) s)

ce
*β ^-

0.162
0.186-0.190

0.777^(I) (max: 1.985)

40
40
95

X
γ

0.023-0.027
0.190
0.558
0.725

36.3
15.6
3.2
3.2

Tellurium-121m (^121mTe) in equilibrium with Tellurium-121 (¹²¹Te)

154.0 (7) days
(¹²¹Te: 19.16 (5) days)

e_A
ce

0.003
0.022-0.023
0.050
0.077
0.180

88.0
7.4
33.2
40.0
6.1

X
γ

0.026-0.031
0.212
1.102

50.5
81.4
2.5

Tellurium-121 (¹²¹Te)

**19.16 (5) days

e_A

0.022

11.6

X
γ

0.026-0.030
0.470
0.508
0.573

75.6
1.4
17.7
80.3

Iodine-123 (¹²³I)

13.27 (8) hours

e_A

ce

0.023
0.127
0.154
0.158

12.3
13.6
1.8
0.4

X
γ

0.004
0.027-0.031
0.159
0.346
0.440
0.505
0.529
0.538

9.3
86.6
83.3
0.1
0.4
0.3
1.4
0.4

Iodine-125 (¹²⁵I)

59.402 (14) days

e_A^{+ ce}

0.004
0.023-0.035

80
33

X
γ

0.004
0.027
0.031
0.035

15.5
114
26
6.7

Iodine-126 (¹²⁶I)

13.11 (5) days

e_A
ce
β ^-
β ⁺

0.023
0.354
0.634
0.109^(I)
0.290^(I)
0.459^(I)
0.530^(I)

6
0.5
0.1
3.6
32.1
8.0
1

X
γ

0.027-0.031
0.388
0.491
0.511
0.666
0.754
0.880
1.420

42.2
34
2.9
2.3^(II)
33
4.2
0.8
0.3

Iodine-131 (¹³¹I)

8.02070 (11) days

ce
β ^-

0.46
0.330
0.069^(I)
0.097^(I)
0.192^(I)

3.5
1.6
2.1
7.3
89.9

X
γ

0.029-0.030
0.080
0.284
0.365
0.637
0.723

3.9
2.6
6.1
81.7
7.2
1.8

Xenon-131m (^131mXe)

11.84 (7) days

e_A
ce

0.025
0.129
0.159
0.163

6.8
61
28.5
8.3

X
γ

0.004
0.030
0.034
0.164

8.3
44.0
10.2
2.0

Iodine-133 (¹³³I) (decays to radioactive Xenon-133)

20.8 (1) hours

β ^-

0.140^(I)
0.162^(I)
0.299^(I)
0.441^(I)

3.8
3.2
4.2
83

γ

0.530
0.875
1.298

87
4.5
2.4

Xenon-133 (¹³³Xe)

5.243 (1) days

e_A

ce
β ^-

0.026
0.045
0.075-0.080
0.101^(I)

5.8
55.1
9.9
99.0

X
γ

0.004
0.031
0.035
0.080

6.3
40.3
9.4
38.3

Xenon-133m (^133mXe) (decays to radioactive Xenon-133)

2.19 (1) days

e_A

ce

0.025
0.199
0.228
0.232

7
64.0
20.7
4.6

X
γ

0.004
0.030
0.034
0.233

7.8
45.9
10.6
10.0

Iodine-135 (¹³⁵I) (decays to radioactive Xenon-135)

6.57 (2) hours

β ^-

0.140^(I)
0.237 ^(I)
0.307 ^(I)
0.352 ^(I)
0.399 ^(I)
0.444 ^(I)
0.529 ^(I)

7.4
8
8.8
21.9
8
7.5
23.8

γ

*0.527
0.547
0.837
1.039
1.132
1.260
1.458
1.678
1.791

13.8
7.2
6.7
8.0
22.7
28.9
8.7
9.6
7.8

Xenon-135 (¹³⁵Xe)

9.14 (2) hours

ce
β ^-

0.214
0.171
0.308

5.5
3.1
96.0

X
γ

0.031-0.035
0.250
0.608

5.0
90.2
2.9

Caesium-137 (¹³⁷Cs) in equilibrium with Barium-137m (^137mBa)

30.04 (3) years
(^137mBa: 2.552 (1) min)

e_A

ce
β ^-

0.026
0.624
0.656
0.174^(I)
0.416^(I)

0.8
8.0
1.4
94.4
5.6

X
γ

0.005
0.032-0.036
0.662

1
7
85.1

Ytterbium-175 (¹⁷⁵Yb)

4.185(1) days

e_A
ce
β ^-

0.00602
0.05049
0.1029
0.0190
0.1024
0.1399

6.34
7.42
1.76
20.4
6.7
72.9

X
γ

0.0530-0.541
0.1138
0.2825
0.3963

5.90
3.87
6.13
13.2

Lutetium-177m

(^177mLu)

160.44(6) days

e_A
ce
β ^-

0.00618
0.04001
0.04760
0.06315
0.08793
0.1017
0.04082^(I°)

129.8
33.6
18.2
23.9
16.1
23.9
78.6

X
γ

0.0079
0.0546-0.0649
0.2285
0.2818
0.3277
0.3785
0.4137
0.4185

45.6
115.2
37.1
14.2
18.1
29.9
17.5
21.3

Lutetium-177

(¹⁷⁷Lu)

6.647(4) days

e_A

β ^-

4.3-11.2
0.0477
0.1117
0.1494

8.8
11.6
9.1
79.3

X
γ

0.007-0.011
0.054-0.056
0.1129
0.2084

3.2
4.4
6.2
10.4

Thallium-200 (²⁰⁰Tl)

26.1 (1) hours

ce


β ⁺

0.285
0.353
0.495^(I)

3.4
1.4
0.3

X
γ

0.010
0.069-0.071
0.08
0.368
0.579
0.828
1.206
1.226
1.274
1.363
1.515

32.0
63.3
17.5
87.2
13.8
10.8
29.9
3.4
3.3
3.4
4.0

Lead-201 (²⁰¹Pb) (decays to radioactive Thallium-201)

9.33 (3) hours

e_A
^ce

0.055
0.246
0.276
0.316

3
8.5
2
2.3

X
γ

0.070-0.073
0.083
0.331
0.361
0.406
0.585
0.692
0.767
0.826
0.908
0.946
1.099
1.277

69
19
79
9.9
2.0
3.6
4.3
3.2
2.4
5.7
7.9
1.8
1.6

Thallium-201 (²⁰¹Tl)

72.912 (17) hours

^ce

0.016-0.017
0.027-0.029
0.052
0.084
0.153

17.7
4.1
7.2
15.4
2.6

X
γ

0.010
0.069-0.071
0.080
0.135
0.167

46.0
73.7
20.4
2.6
10.0

Thallium-202 (²⁰²Tl)

12.23 (2) days

e_A

^ce

0.054
0.357

2.8
2.4

X
γ

0.010
0.069-0.071
0.080
0.440

31.0
61.6
17.1
91.4

Lead-203 (²⁰³Pb)

51.873 (9) hours

e_A

ce

0.055
0.194

3.0
13.3

X
γ

0.010
0.071-0.073
0.083
0.279
0.401

37.0
69.6
19.4
80.8
3.4

Astatine-211 (²¹¹At)

7.214 (7) h

Ec (58.2%)
Α (42%)