keV Neutron capture cross sections of 134Ba and 136Ba

The neutron capture cross sections of ¹³⁴Ba and ¹³⁶Ba have been measured in the energy region 3 to ¹⁰⁰keV. The following average quantities were deduced from the extracted resonance parameters: 〈D〉 = 127±10eV, 10⁴S₀ = 0.85±0.3, 10⁴S₁ = 0.8, 〈Γ_γ〉 = 120±20 meV for ¹³⁴Ba. Analysis of the ¹³⁶Ba data gave 〈Γ_γ〉 = 125±30meV for s-wave neutrons. The average 30 keV capture cross sections for these two s-process nuclei were found to be $\text{225±35}\text{mb}\text{for}{}^{134}\text{Ba and}\text{61±10}\text{mb}\text{for}{}^{136}\text{Ba}$.