Dy
Dysprosium
Z = 66 · Lanthanide · 162.5 u
Nuclear Engineering Significance
Strong thermal neutron absorber (σ_a = 994 b for natural Dy). Used in control rod and absorber applications, particularly in some CANDU reactor designs. Dysprosium titanate (Dy₂TiO₅) has been used as a flux suppressor material.
Basic properties
- Atomic number (Z)
- 66
- Standard atomic mass
- 162.5 u
- Category
- Lanthanide
Isotopes & cross-section data
| Isotope | Mass (A) | Half-life | ZAID | Libraries |
|---|---|---|---|---|
| Dy-164 | 164 | Stable | .80c.71c.70c |