Dysprosium Isotopic Data
Isotope |
Isotopic Mass amu |
% Abundance |
T1/2 |
T1/2 Units |
Mass Excess KeV |
Binding Energy Per Nucleon KeV |
Decay Mode |
Branching Ratio |
138Dy | 137.96249 (64) |
| 200 | ms | -34,940 (600) | 7,950 (4) | B+ ? |
|
139Dy | 138.95954 (54) |
| 600 | ms | -37,690 (500) | 7,971 (4) | B+ | 100 |
140Dy | 139.95401 (54) |
| 700 | ms | -42,840 (500) | 8,008 (4) | B+ ? |
|
141Dy | 140.95135 (32) |
| 900 | ms | -45,320 (300) | 8,027 (2) | B+ | 100 |
142Dy | 141.94637 (39) |
| 2.3 | s | -49,960 (360) | 8,060 (3) | B+ | 100 |
143Dy | 142.94383 (21) |
| 5.6 | s | -52,320 (200) | 8,076 (1) | B+ | 100 |
144Dy | 143.939254 (33) |
| 9.1 | s | -56,585 (31) | 8,105.7 (2.1) | B+ | 100 |
145Dy | 144.937425 (49) |
| 9.5 | s | -58,288 (46) | 8,117.2 (3.2) | B+ | 100 |
146Dy | 145.932845 (29) |
| 33.2 | s | -62,554 (27) | 8,146.1 (1.9) | B+ | 100 |
147Dy | 146.931092 (21) |
| 40 | s | -64,188 (20) | 8,156.7 (1.3) | B+ | 100 |
148Dy | 147.927150 (11) |
| 3.3 | m | -67,859 (11) | 8,180.94 (7.2) | B+ | 100 |
149Dy | 148.9273048 (94) |
| 4.2 | m | -67,715.2 (8.8) | 8,179.24 (5.9) | B+ | 100 |
150Dy | 149.9255852 (53) |
| 7.17 | m | -69,317.0 (4.9) | 8,189.20 (3.3) | B+ | 64 5 |
151Dy | 150.9261846 (43) |
| 17.9 | m | -68,758.6 (4) | 8,184.72 (2.7) | B+ | ? |
152Dy | 151.9247183 (56) |
| 2.38 | h | -70,124.5 (5.2) | 8,192.96 (3.4) | EC~100 |
|
153Dy | 152.9257647 (49) |
| 6.4 | h | -69,149.8 (4.5) | 8,185.79 (3) | B+~100 |
|
154Dy | 153.9244245 (82) |
| 3 | My | -70,398.2 (7.6) | 8,193.16 (5) | A | 100 |
155Dy | 154.925754 (13) |
| 9.9 | h | -69,160 (12) | 8,184.38 (7.7) | B+ | 100 |
156Dy | 155.9242831 (71) | 0.06 (1) | stable |
| -70,529.8 (6.6) | 8,192.44 (4.2) |
|
|
157Dy | 156.9254661 (72) |
| 8.14 | h | -69,427.9 (6.7) | 8,184.65 (4.2) | B+ | |
158Dy | 157.9244095 (36) | 0.10 (1) | stable |
| -70,412.1 (3.4) | 8,190.16 (2.2) |
|
|
159Dy | 158.9257392 (29) |
| 144.4 | d | -69,173.5 (2.7) | 8,181.62 (1.7) | EC | 100 |
160Dy | 159.9251975 (27) | 2.34 (8) | stable |
| -69,678.1 (2.5) | 8,184.09 (1.6) |
|
|
161Dy | 160.9269334 (27) | 18.91 (24) | stable |
| -68,061.1 (2.5) | 8,173.34 (1.6) |
|
|
162Dy | 161.9267984 (27) | 25.51 (26) | stable |
| -68,186.8 (2.5) | 8,173.49 (1.6) |
|
|
163Dy | 162.9287312 (27) | 24.90 (16) | stable |
| -66,386.5 (2.5) | 8,161.82 (1.6) |
|
|
164Dy | 163.9291748 (27) | 28.18 (37) | stable |
| -65,973.3 (2.5) | 8,158.75 (1.5) |
|
|
165Dy | 164.9317033 (27) |
| 2.334 | h | -63,617.9 (2.5) | 8,143.94 (1.5) | B- | 100 |
166Dy | 165.9328067 (28) |
| 81.6 | h | -62,590.1 (2.6) | 8,137.31 (1.5) | B- | 100 |
167Dy | 166.935655 (65) |
| 6.2 | m | -59,937 (60) | 8,121.0 (3.6) | B- | 100 |
168Dy | 167.93713 (15) |
| 8.7 | m | -58,560 (140) | 8,112.6 (8.3) | B- | 100 |
169Dy | 168.94031 (32) |
| 39 | s | -55,600 (300) | 8,095 (1.8) | B- | 100 |
170Dy | 169.94239 (21) |
| 30 | s | -53,660 (200) | 8,083 (1) | B- ? |
|
171Dy | 170.94620 (32) |
| 6 | s | -50,110 (300) | 8,062 (2) | B- ? |
|
172Dy | 171.94876 (43) |
| 3 | s | -47,730 (400) | 8,049 (2) | B- ? |
|
173Dy | 172.95300 (54) |
| 2 | s | -43,780 (500) | 8,026 (3) | B- ? |
|
140mDy | 139.95401 (54) |
| 7 | us | -42,840 (500) | 8,008 (4) | B+ ? |
|
143mDy | 142.94383 (21) |
| 3 | s | -52,320 (200) | 8,076 (1) | B+ | 100 |
145mDy | 144.937425 (49) |
| 14.1 | s | -58,288 (46) | 8,117.2 (3.2) | B+ | 100 |
146mDy | 145.932845 (29) |
| 150 | ms | -62,554 (27) | 8,146.1 (1.9) | IT | 100 |
147mDy | 146.931092 (21) |
| 55 | s | -64,188 (20) | 8,156.7 (1.3) | B+ | 65 4 |
149mDy | 148.9273048 (94) |
| 490 | ms | -67,715.2 (8.8) | 8,179.24 (5.9) | IT | 99.3 3 |
155mDy | 154.925754 (13) |
| 6 | us | -69,160 (12) | 8,184.38 (7.7) | IT | 100 |
157mDy | 156.9254661 (72) |
| 21.6 | ms | -69,427.9 (6.7) | 8,184.65 (4.2) | IT | 100 |
159mDy | 158.9257392 (29) |
| 122 | us | -69,173.5 (2.7) | 8,181.62 (1.7) | IT | 100 |
165mDy | 164.9317033 (27) |
| 1.257 | m | -63,617.9 (2.5) | 8,143.94 (1.5) | IT | 97.76 11 |
149m1Dy | 148.9273048 (94) |
| 28 | ns | -67,715.2 (8.8) | 8,179.24 (5.9) | IT | 100 |
Data Source: ENSDF March 2005
©Radiochemistry Society 2005