Low Energy Neutron Cross Sections of Dy¹⁶⁴

The total and activation cross sections of Dy¹⁶⁴ have been measured in the energy range 0.02 to 2.0 ev. The cross sections, which are not 1/υ above 0.1 ev, are well represented by the single level Breit-Wigner formula for a bound level with parameters E₀ = −1.89 ± 0.04 ev; Γ_n⁰ = 0.041 ± 0.001 ev; Γ = 0.166 ± 0.004 ev; and σ₀ Γ² = 4280 ± 100 barns ev.²