Barium Isotopic Data
Isotope |
Isotopic Mass amu |
% Abundance |
T1/2 |
T1/2 Units |
Mass Excess KeV |
Binding Energy Per Nucleon KeV |
Decay Mode |
Branching Ratio |
114Ba | 113.95068 (15) |
| 530 | ms | -45,950 (140) | 8,090 (1.2) | B+~100 |
|
115Ba | 114.94737 (64) |
| 450 | ms | -49,030 (600) | 8,117 (5) | B+ | 100 |
116Ba | 115.94138 (43) |
| 1.3 | s | -54,600 (400) | 8,164 (3) | B+ | 100 |
117Ba | 116.93850 (32) |
| 1.75 | s | -57,290 (300) | 8,186 (3) | B+ | 100 |
118Ba | 117.93304 (21) |
| 5.2 | s | -62,370 (200) | 8,229 (2) | B+ | 100 |
119Ba | 118.93066 (21) |
| 5.4 | s | -64,590 (200) | 8,246 (1.7) | B+ | 100 |
120Ba | 119.92604 (32) |
| 24 | s | -68,890 (300) | 8,280 (2.5) | B+ | 100 |
121Ba | 120.92405 (15) |
| 29.7 | s | -70,740 (140) | 8,294 (1.2) | B+ | 100 |
122Ba | 121.919904 (30) |
| 1.95 | m | -74,609 (28) | 8,323.8 (2.3) | B+ | 100 |
123Ba | 122.918781 (13) |
| 2.7 | m | -75,655 (12) | 8,330.21 (9.8) | B+ | 100 |
124Ba | 123.915094 (13) |
| 11 | m | -79,090 (12) | 8,355.8 (1) | B+ | 100 |
125Ba | 124.914473 (12) |
| 3.5 | m | -79,668 (11) | 8,358.17 (8.9) | B+ | 100 |
126Ba | 125.911250 (13) |
| 100 | m | -82,670 (12) | 8,379.72 (9.9) | B+ | 100 |
127Ba | 126.911094 (12) |
| 12.7 | m | -82,816 (11) | 8,378.44 (9) | B+ | 100 |
128Ba | 127.908318 (11) |
| 2.43 | d | -85,402 (10) | 8,396.24 (7.9) | EC | 100 |
129Ba | 128.908679 (12) |
| 2.23 | h | -85,065 (11) | 8,391.11 (8.5) | B+ | 100 |
130Ba | 129.9063208 (30) | 0.106 (1) | stable |
| -87,261.6 (2.8) | 8,405.55 (2.1) |
|
|
131Ba | 130.9069411 (30) |
| 11.5 | d | -86,683.8 (2.8) | 8,398.59 (2.1) | B+ | 100 |
132Ba | 131.9050613 (11) | 0.101 (1) | stable |
| -88,434.8 (1.1) | 8,409.373 (8) |
|
|
133Ba | 132.9060075 (11) |
| 10.51 | y | -87,553.5 (1) | 8,400.205 (7) | EC | |
134Ba | 133.90450838 (43) | 2.417 (18) | stable |
| -88,949.87 (40) | 8,408.171 (3) |
|
|
135Ba | 134.90568859 (44) | 6.592 (12) | stable |
| -87,850.51 (41) | 8,397.533 (3) |
|
|
136Ba | 135.90457595 (44) | 7.854 (24) | stable |
| -88,886.94 (41) | 8,402.755 (3) |
|
|
137Ba | 136.90582738 (45) | 11.232 (24) | stable |
| -87,721.23 (42) | 8,391.827 (3) |
|
|
138Ba | 137.90524724 (45) | 71.698 (42) | stable |
| -88,261.63 (42) | 8,393.420 (3) |
|
|
139Ba | 138.90884134 (46) |
| 83.1 | m | -84,913.75 (42) | 8,367.017 (3) | B- | 100 |
140Ba | 139.9106045 (85) |
| 12.752 | d | -83,271.4 (8) | 8,353.17 (5.7) | B- | 100 |
141Ba | 140.9144110 (87) |
| 18.27 | m | -79,725.6 (8.1) | 8,326.03 (5.8) | B- | 100 |
142Ba | 141.9164534 (66) |
| 10.6 | m | -77,823.1 (6.2) | 8,310.84 (4.4) | B- | 100 |
143Ba | 142.920627 (14) |
| 14.5 | s | -73,936 (13) | 8,281.98 (9.3) | B- | 100 |
144Ba | 143.922953 (14) |
| 11.5 | s | -71,769 (13) | 8,265.47 (9.3) | B- | 100 |
145Ba | 144.927627 (76) |
| 4.31 | s | -67,415 (71) | 8,234.1 (4.9) | B- | 100 |
146Ba | 145.930220 (78) |
| 2.22 | s | -65,000 (72) | 8,216.4 (5) | B- | 100 |
147Ba | 146.93495 (22) |
| 893 | ms | -60,600 (210) | 8,186 (1) | B- | 100 |
148Ba | 147.937720 (90) |
| 612 | ms | -58,013 (84) | 8,167.3 (5.7) | B- | 100 |
149Ba | 148.94258 (21) |
| 344 | ms | -53,490 (200) | 8,136 (1) | B- | 100 |
150Ba | 149.94568 (43) |
| 300 | ms | -50,600 (400) | 8,117 (3) | B- | 100 |
151Ba | 150.95081 (43) |
| 200 | ms | -45,820 (400) | 8,085 (3) | B- ? |
|
152Ba | 151.95427 (54) |
| 100 | ms | -42,600 (500) | 8,063 (3) | B- ? |
|
153Ba | 152.95961 (86) |
| 80 | ms | -37,620 (800) | 8,031 (5) | B- ? |
|
127mBa | 126.911094 (12) |
| 1.9 | s | -82,816 (11) | 8,378.44 (9) | IT | 100 |
129mBa | 128.908679 (12) |
| 2.16 | h | -85,065 (11) | 8,391.11 (8.5) | B+~100 |
|
130mBa | 129.9063208 (30) |
| 9.54 | ms | -87,261.6 (2.8) | 8,405.55 (2.1) | IT | 100 |
131mBa | 130.9069411 (30) |
| 14.6 | m | -86,683.8 (2.8) | 8,398.59 (2.1) | IT | 100 |
133mBa | 132.9060075 (11) |
| 38.9 | h | -87,553.5 (1) | 8,400.205 (7) | IT~100 |
|
135mBa | 134.90568859 (44) |
| 28.7 | h | -87,850.51 (41) | 8,397.533 (3) | IT | 100 |
136mBa | 135.90457595 (44) |
| 308.4 | ms | -88,886.94 (41) | 8,402.755 (3) | IT | 100 |
137mBa | 136.90582738 (45) |
| 2.552 | m | -87,721.23 (42) | 8,391.827 (3) | IT | 100 |
138mBa | 137.90524724 (45) |
| 800 | ns | -88,261.63 (42) | 8,393.420 (3) | IT | 100 |
Data Source: ENSDF March 2005
©Radiochemistry Society 2005