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| Nominal Mass |
Accurate Mass |
% Natural Abundance |
Chemical Form |
Enrichment Available % |
| 156 Dy | 155.924277 (8) | 0.06 (1) | oxide | 8 - 20+ |
| 158 Dy | 157.924403 (5) | 0.10 (1) | oxide | 14 - 23+ |
| 160 Dy | 159.925193 (4) | 2.34 (8) | oxide | 67 - 70+ |
| 161 Dy | 160.926930 (4) | 18.9 (24) | oxide | 91 - 93+ |
| 162 Dy | 161.926795 (4) | 25.5 (26) | oxide | 94+ |
| 163 Dy | 162.928728 (4) | 24.9 (16) | oxide | 92 - 94+ |
| 164 Dy | 163.929171(4) | 28.2 (37) | oxide | 96 - 98+ |
Many Dysprosium Isotopes have been the subject of physics research. Dy-156 has been used to study double electron capture while Dy-160 has been used in research to investigate its multitude of excited states. Dy-161 spectroscopy has been used to determine the properties of Dysprosium based superconductor material. Dy-162 has been used to study excited states in deformed nuclei. Dy-164 has two medical applications. It is used in the production of Dy-165 which is used in arthritis therapy. Dy-164 is also used for the production of Dy-166 which decays to Ho-166 and this used in cancer therapy. The Dy-164 to Ho-166 route gives the advantage of generating so-called carrier free material.