Neutron Capture Cross Sections of ¹⁵¹Eu and ¹⁵³Eu from 3 to 2200 keV

Neutron capture by enriched stable isotopes of europium was measured as a function of energy by time of flight at the Oak Ridge Electron Linear Accelerator. Deformed optical model and reaction theory calculations using the published total cross section for natural europium and low-energy resonance parameters were made to compare with the present data. Maxwellian average capture at kT = 30 keV was calculated as (3.40 ± 0.14) b for ¹⁵¹Eu and (2.48 ± 0.10) b for ¹⁵³Eu.