Mass chains

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Energies are in keV
Decays out of the chain are in red

Separation energy

Delayed particle

Metastable state

Jp energy half-life decays

Ground state

Nuclide
Jp half-life (width)
Qβ or Qec
decays
(meta like 0+X)

Data sources
ENSDF
AME 2012

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Nuclear Data Section

IAEA Nuclear Data Section

Mass Chain Chart of Nuclides With isotope structure and decay data.Click on a nuclide to get detailed information

17B5
(3/2-) 5.08 ms
Qβ- 22740.038
β- 100
β- n 63
β- 2n 11
β- 3n 3.5
β- 4n 0.4

31NA11
3/2(+) 17.35 ms
Qβ- 15383.272
β- 2n 0.87
β- 100
β- 3n < 0.05
β- n 37.3

56SC21
(1+) 26 ms
Qβ- 14474
β- 100
β- n ?
(5+,6+) 0+X 75 ms
β- 100 β- n > 14

84GA31
(0-) 0.085 s
Qβ- 13865
β- 100
β- n 70
(3-,4-) 0.0+X LT 0.085 s
β- 100 β- n ?

91RU44
(9/2+) 8.0 s
Qec 7746.735
ec 100
(1/2-) 0.0+X 7.6 s
ec > 0 β+ p > 0
IT ?

94AG47
(0+) 26 ms
Qec 13690.047
ec 100
ec p ?
(7+) 0.0+X 0.55 s
ec p 20 ec 100

96AG47
(8)+ 4.40 s
Qec 11670.524
ec 100
ec p 8.5
(2+) 0.0+Y 6.9 s
ec 100 ec p 18

102Y39
HIGH J 0.36 s
Qβ- 10420.396
β- 100
β- n 4.9
LOW J 0.0+Y 0.298 s
β- 100 β- n 4.9

112RH45
1+ 2.1 s
Qβ- 6588.945
β- 100
1+ 0.0+X 2.1 s
β- 100
GE 4 0.0+Y 6.8 s
β- 100

113XE54
(5/2+) 2.74 s
Qec 8915.875
α ≈ 0.011
ec ≈ 100
ec p 7
β+ α ≈ 0.007

118CS55
2 14 s
Qec 9669.689
ec 100
ec p < 4.2E-2
ec α < 2.4E-3
6,7,8 0.0+X 17 s
ec 100 ec p < 4.2E-2
ec α < 2.4E-3

119AG47
(7/2+) 2.1 s
Qβ- 5331.346
β- 100
(7/2+) 0.0+X 2.1 s
β- 100
(1/2-) 0.0+Y 6.0 s
β- 100

120CS55
2(+) 61.3 s
Qec 8283.785
ec 100
β+ p 7E-6
β+ α 2.0E-5
(7-) 0.0+X 57 s
ec 100

122AG47
(3+) 0.529 s
Qβ- 9506.265
β- 99.8
β- n 0.186
(1-) 0.0+X 0.55 s
β- ? IT ?
β- n ?

129AG47
(9/2+) 46 ms
Qβ- 11299
β- 100
β- n ?
(1/2-) X AP 160 ms
β- ? β- n ?

131SN50
(3/2+) 56.0 s
Qβ- 4709.778
β- 100
(11/2-) 0.0+X 58.4 s
β- ≈ 100 IT ?

133SM62
(5/2+) 2.89 s
Qec 8176.646
ec 100
ec p > 0
(1/2-) 0.0+Y 3.5 s
ec ? ec p ?
IT ?

136EU63
(7+) 3.3 s
Qec 10566.889
ec 100
β+ p 0.09
(3+) Y 3.8 s
ec 100 β+ p 0.09

147ER68
(1/2+) AP 2.5 s
Qec 9149.286
ec 100
β+ p > 0
(11/2-) 0.0+X 2.5 s
ec 100 β+ p > 0

151YB70
(1/2+) 1.6 s
Qec 9235.411
ec 100
ec p > 0
(11/2-) 0.0+X 1.6 s
ec ≈ 100 ec p ?
IT ≈ 0.4

154TB65
0 21.5 h
Qβ- 237.987
Qec 3549.651
ec 100
β- < 0.1
3- 0+X 9.4 h
ec 78.2 β- < 0.1
IT 21.8
7- 0+Y 22.7 h
ec 98.2 IT 1.8

154HO67
2- 11.76 min
Qec 5754.357
α 0.019
ec 99.981
8+ 0+X 3.10 min
α < 0.001 ec 100
IT ≈ 0

162LU71
1- 1.37 min
Qec 6994.749
ec ≤ 100
(4-) X 1.5 min
ec ≤ 100
Y 1.9 min
ec ≤ 100

164TM69
1+ 2.0 min
Qec 4037.862
ec 100
ec 39
6- 0.0+X 5.1 min
ec ≈ 20 IT ≈ 80

168IR77
222 ms
Qec 11270.045
α ≤ 100
ec ?
P ?
0.0+X 159 ms
α 77 ec ≤ 23
P ?

169RE75
(9/2-) 8.1 s
Qec 6508.551
α < 0.01
ec 100.00
(5/2+,3/2+) 0.0+X 15.1 s
α ≈ 0.2 ec ?
IT ?

170IR77
(3-) 0.87 s
Qec 10566.451
α 5.2
ec 94.8
(8+) 0+X 811 ms
α 38 ec ≤ 62
IT ≤ 62

171IR77
(1/2+) 3.2 s
Qec 7886.292
α > 0
ec ?
P ?
(11/2-) 0.0+X 1.40 s
α 58 ec ≤ 42
P ≤ 42

172AU79
22 ms
Qec 11728.778
α ≈ 100
P ?
ec ?
0.0+X 7.7 ms
α ≈ 100 P < 0.02
ec ?

173IR77
(3/2+,5/2+) 9.0 s
Qec 7169.868
α < 7
ec > 93
(3/2+,5/2+) 0.0+Y 9.0 s
α < 7 ec > 93
(11/2-) 0.0+X 2.20 s
ec 88 α 12

178TA73
7- 2.36 h
Qec 1836.678
ec 100
7- 0.0+X 2.36 h
ec 100
(1+) 0.0+Y 9.31 min
ec 100

179TL81
(1/2+) 0.23 s
Qec 8643.674
α < 100
ec ?
P ?
(11/2-) 0.0+X 1.5 ms
α ≤ 100 ec ?
IT ? P ?

185AU79
5/2- 4.25 min
Qec 4821.329
ec 99.74
α 0.26
0.0+X 6.8 min
ec < 100 IT ?

186TL81
(7+) 27.5 s
Qec 8652.246
ec 100
α ≈ 0.006
(7+) 0.0+X 27.5 s
ec 100 α ≈ 0.006

187HG80
3/2(-) 2.4 min
Qec 4910.159
α < 3.7E-4
ec 100
13/2(+) 0.0+X 1.9 min
ec 100 α < 3.7E-4

189HG80
3/2- 7.6 min
Qec 3955.72
ec 100
α < 0.00003
13/2+ 0.0+X 8.6 min
α < 0.00003 ec 100

189PB82
(3/2-) 39 s
Qec 6724.017
α ≈ 0.4
ec ≈ 100
(13/2+) 0+X 50 s
α < 1 ec ≈ 100

190TL81
2(-) 2.6 min
Qec 6991.17
ec 100
2(-) 0+X 2.6 min
ec 100
7(+) 0+Y 3.7 min
ec 100

190BI83
(3+) 6.3 s
Qec 9817.539
α 90
ec 10
(3+) 0+X 6.3 s
α 90 ec 10
(10-) 0+Y 6.2 s
α 70 ec 30

191PB82
(3/2-) 1.33 min
Qec 6047.073
α 0.013
ec 99.987
(13/2+) 0.0+X 2.18 min
α ≈ 0.02 ec 100

192AT85
(9-,10-) 88 ms
Qec 11006.329
α ≤ 100
(9-,10-) 0.0+X 88 ms
α ≤ 100
0.0+Y 11.5 ms
α ≤ 100

194BI83
(3+) 95 s
Qec 8171.433
α 0.46
ec 99.54
(10-) 0+X 115 s
α 0.20 ec 99.80
(6+,7+) 0+Y 125 s
ec 100

194AT85
AP 40 ms
Qec 10293.045
α ?
ec ?
0+X AP 40 ms
α ? ec ?
0+Y AP 250 ms
α ? ec ?
IT ?

201RA88
(13/2+) 1.6 ms
Qec 8239.291
α 100
ec ?
(13/2+) 0+X 1.6 ms
α 100 ec ?

205RA88
(3/2-) 210 ms
Qec 7148.645
α ≤ 100
ec ?
(13/2+) 0.0+X 170 ms
α ≤ 100 ec ?

206FR87
(2+,3+) AP 16 s
Qec 7872.906
α ≈ 84
ec ≈ 16
(7+) 0.0+X AP 16 s
α ≈ 84 ec ≈ 16

222AC89
1- 5.0 s
Qec 2300.171
α 99
ec 1
0.0+X 63 s
α ≥ 88 ec ≥ 0.7
IT ≤ 10

235U92
7/2- 7.04E+8 y
α 100
SF 7E-9
²⁰Ne 8E-10
{+25}Ne ≈ 8E-10
²⁸Mg 8E-10

236NP93
(6-) 153E+3 y
Qβ- 476.585
Qec 932.923
ec 86.3
β- 13.5
α 0.16
1 0+X 22.5 h
β- 50 ec 50

240NP93
(5+) 61.9 min
Qβ- 2190.573
β- 100
(1+) 0+X 7.22 min
β- 99.88 IT 0.12

242BK97
7.0 min
Qec 2929.582
ec ≤ 100
0+X 9.5 ns
SF ≤ 100
0+Y 600 ns
SF ≤ 100

244AM95
(6-) 10.1 h
Qβ- 1427.3
Qec 74.326
β- 100
0.0+X 0.90 ms
SF ≤ 100
0.0+Y AP 6.5 μs
SF ≤ 100

246MD101
0.9 s
Qec 5926.488
α 100
ec ?
SF ?
0+X 0.9 s
α 100 ec ?
SF ?
0+Y 4.4 s
α < 23 ec > 77

250FM100
0+ 30 min
Qec 846.366
α > 90
ec < 10
SF 0.0069
0.0+X 1.8 s
α < 20 IT ≥ 80
ec ? SF ≤ 8.2E-5
0.0+Y
SF ≤ 100

253NO102
(9/2-) 1.62 min
Qec 3184.919
α 45
ec 55
(19/2+) 0+X 706 μs
(25/2+) 0+Y ?

253LR103
(7/2-) 0.57 s
Qec 4217.081
α ≈ 98.7
SF ≈ 1.3
(1/2-) 0+Y 1.49 s
α 92 SF 8

254ES99
(7+) 275.7 d
Qβ- 1087.8
Qec 650.124
α ≈ 100
β- 1.74E-4
ec ?
SF < 3E-6

254MD101
10 min
Qec 2549.649
ec ≤ 100
0.0+X 10 min
ec ≤ 100
0.0+Y 28 min
ec ≤ 100

258MD101
51.5 d
Qβ- 209
Qec 1261.349
α 100
SF + ec + β- ≤ 3E-3
0.0+X 57.0 min
SF β- ≤ 30 ec ≥ 70