List of isotopes / atomic number 51 to atomic number 60
The list of isotopes is the overview page for easy access to all elements. The structure is also explained there and the legend for the table can also be found there. Decay energies were recalculated with the given masses and the mass-energy equivalent of .
51 antimony
isotope | Half-life | Decay energy (MeV) |
Spin / parity |
Type (s) of decay (%) |
NH (%) |
Mass (u) |
---|---|---|---|---|---|---|
104 Sb | 7.4 s | 12.20 (εβ + ), 8.00 (εp), 0.31 (p) | εβ + ≈ 100, εp <7, p <1 | |||
105 Sb | 1.12 s | 9.44 (εβ + ), 0.483 (p) | εβ + ≈ 100, p =? | |||
106 Sb | 4+ | |||||
107 Sb | 7.9 (εβ + ), 1.5 (α) | 5/2 + | εβ + =?, α =? | |||
108 Sb | 7.4 s | 9.51 (εβ + ) | (4+) | εβ + ≈ 100, εp =? | ||
109 Sb | 17.0 s | 6.38 | (5/2 +) | εβ + | ||
110 Sb | 23.0 s | 8.30 | 3+ | εβ + | ||
111 Sb | 75 s | 5.10 | (5/2 +) | εβ + | ||
112 Sb | 51.4 s | 7,055 | 3+ | εβ + | ||
113 Sb | 6.67 min | 3.905 | 5/2 + | εβ + | ||
114 Sb | 3.49 min | 5,880 | 3+ | εβ + | ||
115 Sb | 32.1 min | 3.030 | 5/2 + | εβ + | ||
115m1 Sb | 6.2 ns | 1,300 | 11 / 2− | IT | ||
115m2 Sb | 159 ns | 2.796 | 19 / 2− | IT | ||
115m3 Sb | 4.1 ns | 3,660 | 25/2 + | IT | ||
116 Sb | 15.8 min | 4.707 | 3+ | εβ + | ||
116m1 Sb | 60.3 min | 5.090 | 8− | εβ + | ||
117 Sb | 2.80 h | 1.757 | 5/2 + | εβ + | ||
117m1 Sb | 355 µs | 3.131 | 5/2 + | IT | ||
118 Sb | 3.6 min | 3.657 | 1+ | εβ + | ||
118m1 Sb | 5.00 h | 3.907 | 8− | εβ + | ||
119 Sb | 38.19 h | 0.594 | 5/2 + | ε | ||
119m1 Sb | 0.85 s | (25/2 +) | IT | |||
120 Sb | 15.89 min | 2,681 | 1+ | εβ + | ||
120m1 Sb | 5.76 d | 2,681 | 8− | εβ + | ||
121 Sb | stable SF | 5/2 + | 57.36 | |||
122 Sb | 2.7238 d | 1.979 (β - ), 1.620 (εβ + ) | 2− | β - = 97.59, εβ + = 2.41 | ||
122m1 Sb | 0.53 ms | 0.137 | 5+ | IT | ||
122m2 Sb | 4.191 min | 0.164 | (8th) - | IT | ||
123 Sb | stable SF | 7/2 + | 42.64 | |||
124 Sb | 60.20 d | 2.905 | 3− | β - | ||
124m1 Sb | 93 p | 0.011 (IT), 2.916 (β - ) | 5+ | IT = 75, β - = 25 | ||
124m2 Sb | 20.2 min | 0.037 | (8) - | IT | ||
125 Sb | 2.7582 a | 0.767 | 7/2 + | β - | ||
126 Sb | 12.46 d | 3,670 | (8) - | β - | ||
126m1 Sb | 19.15 min | 3.688 (β - ), 0.016 (IT) | (5) + | β - = 86, IT = 14 | ||
126m2 Sb | 11 s | 0.040 | (3) - | IT | ||
127 Sb | 3.85 d | 1.581 | 7/2 + | β - | ||
128 Sb | 9.01 h | 4,380 | 8− | β - | ||
128m1 Sb | 10.4 min | 4.380 (β - ), 0.0 (IT) | 5+ | β - = 96.4, IT = 3.6 | ||
129 Sb | 4.40 h | 2,380 | 7/2 + | β - | ||
129m1 Sb | 17.7 min | 4.231 (β - ), 1.851 (IT) | (19 / 2−) | β - = 85, IT = 15 | ||
130 Sb | 39.5 min | 4.96 | (8−) | β - | ||
130m1 Sb | 6.3 min | 4.96 | (5) + | β - | ||
131 Sb | 23.03 min | 3.19 | (7/2 +) | β - | ||
132 Sb | 2.79 min | 5.29 | (4+) | β - | ||
132m1 Sb | 4.10 min | 5.29 | (8−) | β - | ||
133 Sb | 2.5 min | 4.003 | (7/2 +) | β - | ||
133m1 Sb | 3 µs | 4,365 | IT | |||
133m2 Sb | 16 µs | 4,527 | IT | |||
134 Sb | 0.78 s | 8.42 | (0−) | β - | ||
134m1 Sb | 10.23 s | 8.42 (β - ), 0.91 (β - ) | (7−) | β - ≈ 100, β - n = 0.091 | ||
135 Sb | 1.71 s | 8.12 (β - ), 4.62 (β - n) | (7/2 +) | β - ≈ 100, β - n = 16.4 | ||
136 Sb | 0.82 s | 9.3 (β - ), 4.7 (β - n) | β - ≈ 100, β - n = 24.0, β - 2n =? |
52 tellurium
isotope | Half-life | Decay energy (MeV) |
Spin / parity |
Type (s) of decay (%) |
NH (%) |
Mass (u) |
---|---|---|---|---|---|---|
106 te | 60 µs | 4.32 | 0+ | α | ||
107 te | 3.1 ms | 4.008 (α), 10.1 (εβ + ) | α> 70, εβ + <30 | |||
108 te | 2.1 s | 6.8 (εβ + ), 3.442 (α) | 0+ | εβ + = 51, α = 49, β + p = 2.4 | ||
109 te | 4.6 s | 8.68 (εβ + ), 3.23 (α) | εβ + = 96.1, α = 3.9, εp =? | |||
110 te | 18.6 s | 5.25 (εβ + ), 2.723 (α) | 0+ | εβ + ≈ 100, α ≈ 0.003 | ||
111 te | 19.3 s | 7.37 (εβ + ), 5.07 (εp) | (5/2 +) | εβ + ≈ 100, εp =? | ||
112 te | 2.0 min | 4.35 | 0+ | εβ + | ||
113 te | 1.7 min | 6.10 | (7/2 +) | εβ + | ||
114 te | 15.2 min | 2.80 | 0+ | εβ + | ||
115 te | 5.8 min | 4.64 | 7/2 + | εβ + | ||
115m1 Te | 6.7 min | 4.66 (εβ + ), 0.02 (IT) | (1/2) + | εβ + <100, IT =? | ||
116 te | 2.49 h | 1.51 | 0+ | εβ + | ||
117 te | 62 min | 3.535 | 1/2 + | εβ + | ||
117m1 Te | 103 ms | 0.261 | 11 / 2− | IT | ||
118 te | 6.00 d | 0.278 | 0+ | ε | ||
119 te | 16.03 h | 2,293 | 1/2 + | εβ + | ||
119m1 Te | 4.70 d | 2.554 (εβ + ), 0.261 (IT) | 11 / 2− | εβ + ≈ 100, IT <0.008 | ||
120 te | stable 2ε | 0+ | 0.096 | |||
121 te | 16.78 d | 1.040 | 1/2 + | εβ + | ||
121m1 Te | 154 d | 0.294 (IT), 1.334 (εβ + ) | 11 / 2− | IT = 88.6, εβ + = 11.4 | ||
122 te | stable SF | 0+ | 2.603 | |||
123 te | stable ε | 0.051 | 1/2 + | ε | 0.908 | |
123m1 Te | 119.7 d | 0.248 | 11 / 2− | IT | ||
124 te | stable SF | 0+ | 4.816 | |||
125 te | stable SF | 1/2 + | 7.139 | |||
125m1 Te | 57.40 d | 0.145 | 11 / 2− | IT | ||
126 te | stable SF | 0+ | 18.95 | |||
127 te | 9.35 h | 0.698 | 3/2 + | β - | ||
127m1 Te | 109 d | 0.088 (IT), 0.786 (β - ) | 11 / 2− | IT = 97.6, β - = 2.4 | ||
128 te | 7.2 x 10 24 a | 0.867 | 0+ | 2β | 31.69 | |
129 te | 69.6 min | 1.498 | 3/2 + | β - | ||
129m1 Te | 33.6 d | 0.105 (IT), 1.604 (β - ) | 11 / 2− | IT = 63, β - = 37 | ||
130 te | 7.9 x 10 20 a | 2.528 | 0+ | 2β - | 33.80 | |
131 te | 25.0 min | 2.233 | 3/2 + | β - | ||
131m1 Te | 30 h | 2.415 (β - ), 0.182 (IT) | 11 / 2− | β - = 77.8, IT = 22.2 | ||
132 te | 3.204 d | 0.493 | 0+ | β - | ||
133 te | 12.5 min | 2.920 | (3/2 +) | β - | ||
133m1 Te | 55.4 min | 3.254 (β - ), 0.334 (IT) | (11 / 2−) | β - = 82.5, IT = 17.5 | ||
134 te | 41.8 min | 1.56 | 0+ | β - | ||
135 te | 19.0 s | 5.96 | (7 / 2−) | β - | ||
136 te | 17.5 s | 5.07 (β - ), 1.29 (β - n) | 0+ | β - ≈ 100, β - n = 1.1 | ||
137 te | 2.49 s | 6.94 (β - ), 1.87 (β - n) | (7 / 2−) | β - ≈ 100, β - n = 2.69 | ||
138 te | 1.4 s | 6.37 (β - ), 2.50 (β - n) | 0+ | β - ≈ 100, β - n = 6.3 |
53 iodine
isotope | Half-life | Decay energy (MeV) |
Spin / parity |
Type (s) of decay (%) |
NH (%) |
Mass (u) |
---|---|---|---|---|---|---|
108 I. | 36 ms | 4.03 (α) | (1) | α = 91, p <1 | ||
109 I. | 100 µs | 0.82 | p | |||
110 I. | 0.65 s | 11.9 (εβ + ), 3.58 (α), 8.6 (εp), 17.7 (εα) | εβ + = 83, α = 17, εp = 11, εα = 1.1 | |||
111 I. | 2.5 s | 8.50 (εβ + ), 3.28 (α) | (5/2 +) | εβ + ≈ 100, α ≈ 0.1 | ||
112 I. | 3.42 s | 10.20 (εβ + ), 2.99 (α) | εβ + ≈ 100, α ≈ 0.0012 | |||
113 I. | 6.6 s | 7.20 (εβ + ), 2.71 (α) | (5/2 +) | εβ + ≈ 100, εα =?, α = 3.310 · 10 −7 | ||
114 I. | 2.1 s | 9.1 (εβ + ), 4.3 (εp) | 1+ | εβ + ≈ 100, εp =? | ||
114m1 I. | 6.2 s | 9.366 (εβ + ), 0.266 (IT) | (7) | εβ + =?, IT =? | ||
115 I. | 1.3 min | 5.90 | (5/2 +) | εβ + | ||
116 I. | 2.91 s | 7.75 | 1+ | εβ + | ||
116m1 I. | 3.27 µs | (7−) | ||||
117 I. | 2.22 min | 4.67 | (5/2) + | εβ + | ||
118 I. | 13.7 min | 7.04 | 2− | εβ + | ||
118m1 I. | 8.5 min | 7.144 (εβ + ), 0.104 (IT) | (7−) | εβ + <100, IT> 0 | ||
119 I. | 19.1 min | 3.510 | 5/2 + | εβ + | ||
120 I. | 81.0 min | 5.615 | 2− | εβ + | ||
120m1 I. | 53 min | 5.615 | 4, 5, 6, 7, 8 | εβ + | ||
121 I. | 2.12 h | 2.270 | 5/2 + | εβ + | ||
122 I. | 3.63 min | 4.234 | 1+ | εβ + | ||
122m1 I | 80 µs | |||||
123 I. | 13.27 h | 1.242 | 5/2 + | εβ + | ||
124 I. | 4.1760 d | 3.160 | 2− | εβ + | ||
125 I. | 59.408 d | 0.027 | 5/2 + | ε | ||
126 I. | 13.11 d | 2.155 (εβ + ), 1.258 (β - ) | 2− | εβ + = 56.3, β - = 43.7 | ||
127 I. | stable SF | 5/2 + | 100 | |||
128 I. | 24.99 min | 2.118 (β - ), 1.251 (εβ + ) | 1+ | β - = 93.1, εβ + = 6.9 | ||
129 I. | 1.57 · 10 7 a | 0.194 | 7/2 + | β - | ||
130 I. | 12.36 h | 2.949 | 5+ | β - | ||
130m1 I. | 9.0 min | 0.040 (IT), 2.989 (β - ) | 2+ | IT = 84, β - = 16 | ||
131 I. | 8.02070 d | 0.606 | 7/2 + | β - | ||
132 I. | 2.295 h | 3,577 | 4+ | β - | ||
132m1 I. | 1.387 h | 0.120 (IT), 3.697 (β - ) | (8−) | IT = 86, β - = 14 | ||
133 I. | 20.8 h | 1,770 | 7/2 + | β - | ||
133m1 I. | 9 s | 1.634 | (19 / 2−) | IT | ||
134 I. | 52.5 min | 4.170 | (4) + | β - | ||
134m1 I. | 3.60 min | 0.316 (IT), 4.486 (β - ) | (8th) - | IT = 97.7, β - = 2.3 | ||
135 I. | 6.57 h | 2.648 | 7/2 + | β - | ||
136 I. | 83.4 s | 6.93 | (1−) | β - | ||
136m1 I. | 46.9 s | 7.57 | (6−) | β - | ||
137 I. | 24.5 s | 5.88 (β - ), 1.85 (β - n) | (7/2 +) | β - ≈ 100, β - n = 6.97 | ||
138 I. | 6.49 s | 7.82 (β - ), 2.01 (β - n) | (2−) | β - ≈ 100, β - n = 5.5 | ||
139 I. | 2.29 s | 6.806 (β - ), 3.21 (β - n) | (7/2 +) | β - ≈ 100, β - n = 9.9 | ||
140 I. | 0.86 s | 8.76 (β - ), 3.34 (β - n) | (4) | β - ≈ 100, β - n = 9.3 | ||
141 I. | 0.43 s | 7.8 (β - ), 4.4 (β - n) | β - ≈ 100, β - n = 21.2 |
54 xenon
isotope | Half-life | Decay energy (MeV) |
Spin / parity |
Type (s) of decay (%) |
NH (%) |
Mass (u) |
---|---|---|---|---|---|---|
110 Xe | 0.60 µs | 3.886 (α) | 0+ | εβ + =?, α =? | ||
111 Xe | 0.74 s | 10.60 (εβ + ), 3.72 (α) | εβ + =?, α =? | |||
112 Xe | 2.7 s | 7.20 (εβ + ), 3.317 (α) | 0+ | εβ + = 99.2, α = 0.8 | ||
113 Xe | 2.74 s | 9.06 (εβ + ), 7.91 (εp), 3.10 (α),? (εα) | εβ + ≈ 100, α ≈ 0.011, εp = 7, εα ≈ 0.007 | |||
114 Xe | 10.0 s | 5.9 | 0+ | εβ + | ||
115 Xe | 18 s | 8.0 (εβ + ), 6.2 (εp) | (5/2 +) | εβ + ≈ 100, εp = 0.34, εα = 0.0003 | ||
116 Xe | 59 s | 4.66 | 0+ | εβ + | ||
117 Xe | 61 s | 6.44 (εβ + ), 4.02 (εp) | 5/2 (+) | εβ + ≈ 100, εp = 0.0029 | ||
118 Xe | 3.8 min | 2.9 | 0+ | εβ + | ||
119 Xe | 5.8 min | 5.0 | (5/2 +) | εβ + | ||
120 Xe | 40 min | 1.96 | 0+ | εβ + | ||
121 Xe | 40.1 min | 3.73 | 5/2 (+) | εβ + | ||
122 Xe | 20.1 h | 0.89 | 0+ | ε | ||
123 Xe | 2.08 h | 2,676 | (1/2) + | εβ + | ||
124 Xe | 1.8 · 10 22 a | 0+ | 2ε | 0.10 | ||
125 Xe | 16.9 h | 1.652 | (1/2) + | εβ + | ||
125m1 Xe | 57 p | 0.253 | (9/2) - | IT | ||
126 Xe | stable 2ε | 0+ | 0.09 | |||
127 Xe | 36.4 d | 0.662 | 1/2 + | ε | ||
127m1 Xe | 69.2 s | 0.297 | 9 / 2− | IT | ||
128 Xe | stable SF | 0+ | 1.91 | |||
129 Xe | stable SF | 1/2 + | 26.4 | |||
129m1 Xe | 8.88 d | 0.236 | 11 / 2− | IT | ||
130 Xe | stable SF | 0+ | 4.1 | |||
131 Xe | stable SF | 3/2 + | 21.2 | |||
131m1 Xe | 11.84 d | 0.164 | 11 / 2− | IT | ||
132 Xe | stable SF | 0+ | 26.9 | |||
132m1 Xe | 8.39 ms | 2.752 | (10+) | IT | ||
133 Xe | 5.243 d | 0.427 | 3/2 + | β - | ||
133m1 Xe | 2.19 d | 0.233 | 11 / 2− | IT | ||
134 Xe | stable 2β | 0+ | 10.4 | |||
134m1 Xe | 290 ms | 1.965 | 7− | IT | ||
135 Xe | 9.14 h | 1.151 | 3/2 + | β - | ||
135m1 Xe | 15.29 min | 0.527 (IT), 1.678 (β - ) | 11 / 2− | IT = 99.996, β - = 0.004 | ||
136 Xe | > 10 22 a | 0+ | 8.9 | |||
137 Xe | 3.818 min | 4,172 | 7 / 2− | β - | ||
138 Xe | 14.08 min | 2.770 | 0+ | β - | ||
139 Xe | 39.68 s | 5.057 | 3 / 2− | β - | ||
140 Xe | 13.60 s | 4.06 | 0+ | β - | ||
141 Xe | 1.73 s | 6.15 (β - ), 0.67 (β - n) | 5/2 (-) | β - ≈ 100, β - n = 0.044 | ||
142 Xe | 1.22 s | 5.04 (β - ) | 0+ | β - ≈ 100, β - n = 0.406 | ||
143 Xe | 0.30 s | 7.31 (β - ) | 5 / 2− | β - | ||
144 Xe | 1.15 s | 6.1 | 0+ | β - | ||
145 Xe | 0.9 s | β - ≈ 100, β - n =? | ||||
146 Xe | 146 ms | 0+ | β - | |||
147 Xe | 130 ms |
55 Cesium
isotope | Half-life | Decay energy (MeV) |
Spin / parity |
Type (s) of decay (%) |
NH (%) |
Mass (u) |
---|---|---|---|---|---|---|
113 Cs | 17 µs | 0.974 | (5/2 +) | p ≈ 100, εβ + ≈ 0.03 | ||
114 Cs | 0.57 s | 9.3 (εβ + ), 3.36 (α), 9.3 (εp), 15.3 (εα) | (1+) | εβ + ≈ 100, α = 0.018, εp = 7, εα = 0.16 | ||
115 Cs | 1.4 s | 8.8 (εβ + ), 5.8 (εp) | εβ + ≈ 100, εp ≈ 0.07 | |||
116 Cs | 3.84 s | 10.5 | > 4+ | εβ + ≈ 100, εp = 0.44, εα = 0.08 | ||
116m1 Cs | 0.70 s | 10.5 (εβ + ), 6.7 (εp), 12.4 (εα) | (1+) | εβ + ≈ 100, εp = 0.28, εα = 0.049 | ||
117 Cs | 8.4 s | 7.52 | (9/2 +) | εβ + | ||
117m1 Cs | 6.5 s | 7.67 | (3/2 +) | εβ + | ||
118 Cs | 14 s | 9.3 (εβ + ), 4.73 (εp), 11.08 (εα) | 2 | εβ + ≈ 100, εp <4.2 · 10 −2 , εα <2.4 · 10 −3 | ||
118m1 Cs | 17 s | 9.3 (εβ + ), 4.73 (εp), 11.08 (εα) | (7−) | εβ + ≈ 100, εp <4.2 · 10 −2 , εα <2.4 · 10 −3 | ||
119 Cs | 43.0 s | 6.33 | 9/2 + | εβ + | ||
119m1 Cs | 30.4 s | 6.33 | 3/2 (+) | εβ + | ||
120 Cs | 64 p | 7.92 (εβ + ) | 2 | εβ + | ||
120m1 Cs | 57 p | 7.92 (εβ + ), 2.47 (εp) | εβ + ≈ 100, εp = 7 · 10 −6 , εα = 2.0 · 10 −5 | |||
121 Cs | 155 p | 5.40 | 3/2 (+) | εβ + | ||
121m1 Cs | 122 s | 5.468 (εβ + ), 0.068 (IT) | 9/2 (+) | εβ + = 83, IT = 17 | ||
122 Cs | 21.0 s | 7,050 | 1+ | εβ + | ||
122m1 Cs | 3.70 min | 7.126 | 8− | εβ + | ||
122m2 Cs | 0.36 s | 0.127 | (5) - | IT | ||
123 Cs | 5.94 min | 4,200 | 1/2 + | εβ + | ||
123m1 Cs | 1.64 s | 0.157 | (11/2) - | IT | ||
124 Cs | 30.8 s | 5,951 | 1+ | εβ + | ||
124m1 Cs | 6.3 s | 0.463 | (7) + | IT | ||
125 Cs | 45 min | 3.092 | (1/2 +) | εβ + | ||
126 Cs | 1.64 min | 4.826 | 1+ | εβ + | ||
127 Cs | 6.25 h | 2.085 | 1/2 + | εβ + | ||
128 Cs | 3.66 min | 3,930 | 1+ | εβ + | ||
129 Cs | 32.06 h | 1,196 | 1/2 + | εβ + | ||
130 Cs | 29.21 min | 2.983 (εβ + ), 0.373 (β - ) | 1+ | εβ + = 98.4, β - = 1.6 | ||
130m1 Cs | 3.46 min | 0.163 (IT), 3.146 (εβ + ) | 5− | IT = 99.84, εβ + = 0.16 | ||
131 Cs | 9,689 d | 0.352 | 5/2 + | ε | ||
132 Cs | 6.479 d | 2.120 | 2+ | εβ + = 98.13, β - = 1.87 | ||
133 Cs | stable SF | 7/2 + | 100 | |||
134 Cs | 2.0648 a | 2.059 (β - ), 1.229 (ε) | 4+ | β - ≈ 100, ε = 0.0003 | ||
134m1 Cs | 2.903 h | 0.139 | 8− | IT | ||
135 Cs | 2.3 · 10 6 a | 0.269 | 7/2 + | β - | ||
135m1 Cs | 53 min | 1.633 | 19 / 2− | IT | ||
136 Cs | 13.16 d | 2.548 | 5+ | β - | ||
136m1 Cs | 19 s | ? (IT), 2.548 (β - ) | 8− | IT =?, Β - =? | ||
137 Cs | 30.17 a | 1.176 | 7/2 + | β - | ||
138 Cs | 33.41 min | 5.373 | 3− | β - | ||
138m1 Cs | 2.91 min | 5.453 (β - ), 0.080 (IT) | 6− | β - = 19, IT = 81 | ||
139 Cs | 9.27 min | 4.213 | 7/2 + | β - | ||
140 Cs | 63.7 s | 6.219 | 1− | β - | ||
141 Cs | 24.94 s | 5.255 (β - ), 0.735 (β - n) | 7/2 + | β - ≈ 100, β - n = 0.029 | ||
142 Cs | 1.70 s | 7.306 (β - ), 1.337 (β - n) | 0− | β - ≈ 100, β - n = 0.091 | ||
143 Cs | 1.78 s | 6.243 (β - ), 2.048 (β - n) | 3/2 + | β - ≈ 100, β - n = 1.62 | ||
144 Cs | 1.01 s | 8.465 (β - ), 2.56 (β - n) | 1 | β - ≈ 100, β - n = 3.17 | ||
144m1 Cs | 1 s | 8.465 | (≥4) | β - =? | ||
145 Cs | 0.594 s | 7.89 (β - ), 3.55 (β - n) | 3/2 + | β - ≈ 100, β - n = 13.8 | ||
146 Cs | 0.321 s | 9.38 (β - ), 4.32 (β - n) | 1− | β - ≈ 100, β - n = 14.2 | ||
147 Cs | 0.225 s | 9.25 (β - ), 4.74 (β - n) | (3/2 +) | β - ≈ 100, β - n = 43 | ||
148 Cs | 158 ms | 10.5 (β - ) | β - ≈ 100, β - n = 25 |
56 barium
isotope | Half-life | Decay energy (MeV) |
Spin / parity |
Type (s) of decay (%) |
NH (%) |
Mass (u) |
---|---|---|---|---|---|---|
114 Ba | 0.43 s | 8.9 (εβ + ), 3.6 (α) | 0+ | εβ + ≈ 100, α =?, 12 C ≈ 3 · 10 −5 | ||
115 Ba | 0.4 s | 11.0 | εβ + | |||
116 Ba | 0.3 s | 8.2 | 0+ | εβ + | ||
117 Ba | 1.75 s | 9.5 (εβ + ), 8.7 (εp), 11.7 (εα) | (3/2) | εβ + ≈ 100, εp =?, εα =? | ||
118 Ba | 5.5 s | 6.4 | 0+ | εβ + | ||
119 Ba | 5.4 s | 8.1 (εβ + ), 6.2 (εp) | (5/2 +) | εβ + ≈ 100, εp <25 | ||
120 Ba | 32 p | 5.0 | 0+ | εβ + | ||
121 Ba | 29.7 s | 6.8 (εβ + ), 4.2 (εp) | 5/2 (+) | εβ + ≈ 100, εp = 0.02 | ||
122 Ba | 1.95 min | 3.8 | 0+ | εβ + | ||
123 Ba | 2.7 min | 5.5 | 5/2 + | εβ + | ||
124 Ba | 11.0 min | 2.64 | 0+ | εβ + | ||
125 Ba | 3.5 min | 4.60 | 1/2 (+) | εβ + | ||
126 Ba | 100 min | 1.673 | 0+ | εβ + | ||
127 Ba | 12.7 min | 3,450 | 1/2 + | εβ + | ||
127m1 ba | 1.9 s | 0.080 | 7 / 2− | IT | ||
128 Ba | 2.43 d | 0.521 | 0+ | ε | ||
129 Ba | 2.23 h | 2,432 | 1/2 + | εβ + | ||
129m1 ba | 2.16 h | 2.440 (εβ + ), 0.008 (IT) | 7/2 + | εβ + <100, IT =? | ||
130 Ba | stable ?? | 0+ | 0.106 | |||
130m1 ba | 11 ms | 2,475 | 8− | IT | ||
131 Ba | 11.50 d | 1,370 | 1/2 + | εβ + | ||
131m1 ba | 14.6 min | 0.187 | 9 / 2− | IT | ||
132 Ba | stable 2ε | 0+ | 0.101 | |||
133 Ba | 10.51 a | 0.517 | 1/2 + | ε | ||
133m1 ba | 38.9 h | 0.288 (IT), 0.805 (ε) | 11 / 2− | IT ≈ 100, ε = 0.0096 | ||
134 Ba | stable SF | 0+ | 2,417 | |||
134m1 ba | 2.63 µs | (10+) | ||||
135 Ba | stable SF | 3/2 + | 6,592 | |||
135m1 ba | 28.7 h | 0.268 | 11 / 2− | IT | ||
136 Ba | stable SF | 0+ | 7,854 | |||
136m1 ba | 0.3084 s | 2.031 | 7− | IT | ||
137 Ba | stable SF | 3/2 + | 11.23 | |||
137m1 ba | 2.552 min | 0.662 | 11 / 2− | IT | ||
138 Ba | stable SF | 0+ | 71.70 | |||
139 Ba | 83.06 min | 2,317 | 7 / 2− | β - | ||
140 Ba | 12,752 d | 1.047 | 0+ | β - | ||
141 Ba | 18.27 min | 3.216 | 3 / 2− | β - | ||
142 Ba | 10.6 min | 2.212 | 0+ | β - | ||
143 Ba | 14.33 s | 4.243 | 5 / 2− | β - | ||
144 Ba | 11.5 s | 3.12 (β - ), 1.66 (β - n) | 0+ | β - = 96.4, β - n = 3.6 | ||
145 Ba | 4.31 s | 4.93 | 5 / 2− | β - | ||
146 Ba | 2.22 s | 4.12 | 0+ | β - | ||
147 Ba | 0.893 s | 5.75 (β - ), 0.40 (β - n) | (3/2 +) | β - ≈ 100, β - n = 0.06 | ||
148 Ba | 0.607 s | 5.12 (β - ), 1.12 (β - n) | 0+ | β - = 99.6, β - n = 0.4 | ||
149 Ba | 0.344 s | 7.3 (β - ), 1.1 (β - n) | β - = 99.57, β - n = 0.43 | |||
150 Ba | 0.3 s | 6.6 (β - ) | 0+ | β - ≈ 100, β - n =? |
57 lanthanum
isotope | Half-life | Decay energy (MeV) |
Spin / parity |
Type (s) of decay (%) |
NH (%) |
Mass (u) |
---|---|---|---|---|---|---|
120 La | 2.8 s | 11.2 (εβ + ), 7.4 (εp) | εβ + | |||
121 La | 5.3 s | 7.9 | εβ + ≈ 100, εp =? | |||
122 La | 8.7 s | 9.7 (εβ + ), 5.3 (εp) | εβ + ≈ 100, εp =? | |||
123 La | 17 s | 6.9 | εβ + | |||
124 La | 29 p | 8.8 | εβ + | |||
124m1 La | 1 s | εβ + | ||||
125 La | 76 s | 5.6 | (11 / 2−) | εβ + | ||
126 La | 54 s | 7.6 | εβ + | |||
127 La | 5.1 min | 4.69 | (11 / 2−) | εβ + | ||
127m1 La | 3.7 min | 4.705 (εβ + ), 0.015 (IT) | (3/2 +) | εβ + ≈ 100, IT =? | ||
128 La | 5.0 min | 6.70 | (5+) | εβ + | ||
128m1 La | 560 ms | (1+, 2+) | εβ + | |||
129 La | 11.6 min | 3.72 | 3/2 + | εβ + | ||
129m1 La | 0.56 s | 0.172 | 11 / 2− | IT | ||
130 La | 8.7 min | 5.60 | 3 (+) | εβ + | ||
131 La | 59 min | 2.96 | 3/2 + | εβ + | ||
132 La | 4.8 h | 4.71 | 2− | εβ + | ||
132m1 La | 24.3 min | 0.188 (IT), 4.898 (εβ + ) | 6− | IT = 76, εβ + = 24 | ||
133 La | 3.912 h | 2.23 | 5/2 + | εβ + | ||
134 La | 6.45 min | 3.71 | 1+ | εβ + | ||
135 La | 19.5 h | 1.20 | 5/2 + | εβ + | ||
136 La | 9.87 min | 2.87 | 1+ | εβ + | ||
136m1 La | 114 ms | 0.23 | IT | |||
137 La | 6 · 10 4 a | 0.60 | 7/2 + | ε | ||
138 La | 1.05 x 10 11 a | 1.044 (β - ), 1.737 (εβ + ) | 5+ | β - = 33.6, εβ + = 66.4 | 0.0902 | |
139 La | stable SF | 7/2 + | 99.9098 | |||
140 La | 1.6781 d | 3,762 | 3− | β - | ||
141 La | 3.92 h | 2.502 | (7/2 +) | β - | ||
142 La | 91.1 min | 4.505 | 2− | β - | ||
143 La | 14.2 min | 3.425 | (7/2) + | β - | ||
144 La | 40.8 s | 5.54 | (3−) | β - | ||
145 La | 24.8 s | 4.12 | (5/2 +) | β - | ||
146 La | 6.27 s | 6.55 | 2− | β - | ||
146m1 La | 10.0 s | 6.55 | (6−) | β - | ||
147 La | 4.015 s | 4.95 (β - ), 0.40 (β - n) | (5/2 +) | β - ≈ 100, β - n = 0.035 | ||
148 La | 1.05 s | 7.26 (β - ), 0.95 (β - n) | (2−) | β - ≈ 100, β - n = 0.11 | ||
149 La | 1.05 s | 5.5 (β - ), 1.1 (β - n) | β - ≈ 100, β - n = 1.43 | |||
150 la | 0.86 s | 7.8 (β - ), 1.5 (β - n) | β - ≈ 100, β - n = 2.7 | |||
152 La | > 150 ns | 9.1 | β - |
58 cerium
isotope | Half-life | Decay energy (MeV) |
Spin / parity |
Type (s) of decay (%) |
NH (%) |
Mass (u) |
---|---|---|---|---|---|---|
123 Ce | 3.2 s | 8.6 (εβ + ), 6.9 (εp) | (5/2) | εβ + ≈ 100, εp =? | ||
124 Ce | 6 s | 5.6 | 0+ | εβ + | ||
125 Ce | 9.0 s | 7.3 (εβ + ), 5.2 (εp) | (5/2 +) | εβ + ≈ 100, εp =? | ||
126 Ce | 50 s | 4.4 | 0+ | εβ + | ||
127 Ce | 31 p | 6.1 | (5/2 +) | εβ + | ||
128 Ce | 4.1 s | 3.2 | 0+ | εβ + | ||
129 Ce | 3.5 min | 5.05 | 5/2 + | εβ + | ||
130 Ce | 25 min | 2.2 | 0+ | εβ + | ||
131 Ce | 10.2 min | 4.0 | (7/2 +) | εβ + | ||
131m1 Ce | 5.0 min | 4.0 | (1/2 +) | εβ + | ||
132 Ce | 3.51 h | 1.29 (εβ + ), 2.341 (IT) | 0+ | εβ + | ||
132m1 Ce | 13 ms | 2.34 | (8−, 9−) | IT | ||
133 Ce | 97 min | 2.90 | 1/2 + | εβ + | ||
133m1 Ce | 4.9 h | 2.937 | 9 / 2− | εβ + | ||
134 Ce | 3.16 d | 0.500 | 0+ | ε | ||
135 Ce | 17.7 h | 2.026 | 1/2 (+) | εβ + | ||
135m1 Ce | 20 s | 0.446 | 11/2 (-) | IT | ||
136 Ce | stable 2ε | 0+ | 0.19 | |||
137 Ce | 9.0 h | 1.222 | 3/2 + | εβ + | ||
137m1 Ce | 34.4 h | 0.254 (IT), 1.476 (εβ + ) | 11 / 2− | IT = 99.22, εβ + = 0.78 | ||
138 Ce | stable 2ε | 0+ | 0.25 | |||
138m1 Ce | 8.65 ms | 2.129 (IT) | 7− | IT | ||
139 Ce | 137.640 d | 0.278 | 3/2 + | ε | ||
139m1 Ce | 54.8 s | 0.754 | 11 / 2− | IT | ||
140 Ce | stable SF | 0+ | 88.48 | |||
141 Ce | 32.501 d | 0.581 | 7 / 2− | β - | ||
142 Ce | 5 · 10 16 a | α =?, 2β =? | 11.08 | |||
143 Ce | 33.039 h | 1.462 | 3 / 2− | β - | ||
144 Ce | 284,893 d | 0.319 | 0+ | β - | ||
145 Ce | 3.01 min | 2.54 | (3/2) - | β - | ||
146 Ce | 13.52 min | 1.04 | 0+ | β - | ||
147 Ce | 56.4 s | 3.29 | (5 / 2−) | β - | ||
148 Ce | 56 s | 2.06 | 0+ | β - | ||
149 Ce | 5.3 s | 4.19 | (3 / 2−) | β - | ||
150 Ce | 4.0 s | 3.01 | 0+ | β - | ||
151 Ce | 1.02 s | 5.4 | β - | |||
152 Ce | 1.4 s | 4.5 | 0+ | β - |
59 praseodymium
isotope | Half-life | Decay energy (MeV) |
Spin / parity |
Type (s) of decay (%) |
NH (%) |
Mass (u) |
---|---|---|---|---|---|---|
124 Pr | 1.2 s | 11.6 (εβ + ), 8.3 (εp) | εβ + ≈ 100, εp =? | |||
125 Pr | 3.3 s | εβ + | ||||
126 pr | 3.14 s | 10.4 (εβ + ), 6.3 (εp) | (3,4,5) | εβ + ≈ 100, εp =? | ||
127 Pr | 4.2 s | 7.5 | (11 / 2−) | εβ + | ||
128 pr | 3.1 s | 9.3 (εβ + ), 4.5 (εp) | 4,5,6 | εβ + ≈ 100, εp =? | ||
129 Pr | 30 s | 6.3 | (3/2 +) | εβ + | ||
130 pr | 40.0 s | 8.1 | εβ + | |||
131 Pr | 1.53 min | 5.25 | (3/2 +) | εβ + | ||
131m1 pr | 5.7 s | 0.125 (IT), 5.402 (εβ + ) | (11 / 2−) | IT = 95, εβ + = 5 | ||
132 pr | 1.6 min | 7.1 | εβ + | |||
133 Pr | 6.5 min | 4.3 | (3/2 +) | εβ + | ||
134 Pr | 17 min | 6.2 | 2− | εβ + | ||
134m1 Pr | 11 min | 6.2 | (5−) | εβ + | ||
135 Pr | 24 min | 3.72 | 3/2 (+) | εβ + | ||
136 pr | 13.1 min | 5.126 | 2+ | εβ + | ||
137 Pr | 1.28 h | 2.702 | 5/2 + | εβ + | ||
138 Pr | 1.45 min | 4,437 | 1+ | εβ + | ||
138m1 pr | 2.12 h | 4.801 | 7− | εβ + | ||
139 pr | 4.41 h | 2.129 | 5/2 + | εβ + | ||
140 pr | 3.39 min | 3.388 | 1+ | εβ + | ||
141 Pr | stable SF | 5/2 + | 100 | |||
142 pr | 19.12 h | 2.162 (β - ), 0.745 (εβ + ) | 2− | β - ≈ 100, ε = 0.0164 | ||
142m1 pr | 14.6 min | 0.004 | 5− | IT | ||
143 Pr | 13.57 d | 0.934 | 7/2 + | β - | ||
144 pr | 17.28 min | 2.997 | 0− | β - | ||
144m1 pr | 7.2 min | 0.059 (IT), 3.056 (β - ) | 3− | IT ≈ 100, β - = 0.07 | ||
145 Pr | 5.984 h | 1.805 | 7/2 + | β - | ||
146 Pr | 24.15 min | 4.20 | (2) - | β - | ||
147 Pr | 13.4 min | 2.69 | (3/2 +) | β - | ||
148 Pr | 2.27 min | 4.93 | 1− | β - | ||
148m1 pr | 2.0 min | 5.02 | (4) | β - | ||
149 Pr | 2.26 min | 3.397 | (5/2 +) | β - | ||
150 pr | 6.19 s | 5.69 | (1) - | β - | ||
151 Pr | 18.90 s | 4.1 | (3 / 2−) | β - | ||
152 pr | 3.63 s | 6.4 | (4−) | β - | ||
153 pr | 4.28 s | 5.5 | β - | |||
154 Pr | 2.3 s | 7.9 | (3+, 2+) | β - |
60 neodymium
isotope | Half-life | Decay energy (MeV) |
Spin / parity |
Type (s) of decay (%) |
NH (%) |
Mass (u) |
---|---|---|---|---|---|---|
127 Nd | 1.8 s | 9.0 (εβ + ), 8.0 (εp) | εβ + ≈ 100, εp =? | |||
128 Nd | 4 s | 6.1 | 0+ | εβ + ≈ 100, εp =? | ||
129 Nd | 7 s | 7.8 (εβ + ), 6.11 (εp) | (5/2 +) | εβ + ≈ 100, εp =? | ||
130 Nd | 28 p | 5.0 | 0+ | εβ + | ||
131 Nd | 27 p | 6.56 (εβ + ), 4.3 (εp) | (5/2) | εβ + ≈ 100, εp =? | ||
132 Nd | 1.75 min | 3.7 | 0+ | β + | ||
133 Nd | 70 s | 5.6 | (7/2 +) | εβ + | ||
133m1 Nd | 70 s | (1/2) + | εβ + =?, IT =? | |||
134 Nd | 8.5 min | 2.77 | 0+ | εβ + | ||
134m1 Nd | 410 µs | 2,293 | (8) - | |||
135 Nd | 12.4 min | 4.80 | 9/2 (-) | εβ + | ||
135m1 Nd | 5.5 min | 4.856 | (1/2 +) | εβ + | ||
136 Nd | 50.65 min | 2.21 | 0+ | εβ + | ||
137 Nd | 38.5 min | 3.69 | 1/2 + | εβ + | ||
137m1 Nd | 1.60 s | 0.52 | 11 / 2− | IT | ||
138 Nd | 5.04 h | 1.10 | 0+ | ε | ||
139 Nd | 29.7 min | 2.79 | 3/2 + | εβ + | ||
139m1 Nd | 5.50 h | 3.021 (εβ + ), 0.231 (IT) | 11 / 2− | εβ + = 88.2, IT = 11.8 | ||
140 Nd | 3.37 d | 0.222 | 0+ | ε | ||
140m1 Nd | 0.6 ms | 2.221 | 7− | IT | ||
141 Nd | 2.49 h | 1,823 | 3/2 + | εβ + | ||
141m1 Nd | 62.0 s | 0.757 (IT), 2.580 (εβ + ) | 11 / 2− | IT> 99.95, εβ + <0.05 | ||
142 Nd | stable SF | 0+ | 27.13 | |||
143 Nd | stable α | 7 / 2− | 12.18 | |||
144 Nd | 2.29 x 10 15 a | 1.905 | 0+ | α | 23.80 | |
145 Nd | stable α | 7 / 2− | 8.30 | |||
146 Nd | stable α, 2β | 0+ | 17.19 | |||
147 Nd | 10.98 d | 0.896 | 5 / 2− | β - | ||
148 Nd | stable α, 2β | 0+ | 5.76 | |||
149 Nd | 1.728 h | 1.691 | 5 / 2− | β - | ||
150 nd | 1.1 · 10 19 a | 3.367 | 0+ | 2β - =? | 5.64 | |
151 Nd | 12.44 min | 2,442 | 3/2 + | β - | ||
152 Nd | 11.4 min | 1.11 | 0+ | β - | ||
153 Nd | 31.6 s | 3.60 | (3/2) - | β - | ||
154 Nd | 25.9 s | 2.74 | 0+ | β - | ||
155 Nd | 8.9 s | 5.0 | β - | |||
156 Nd | 5.47 s | 4.1 | 0+ | β - |
swell
See also list of isotopes # web links