Key points are not available for this paper at this time.
The neutron cross sections of the fifteen rare earth elements (excepting ₆₁Pm) have been measured in the energy range from 0. 07 to 20 ev with a crystal spectrometer. The resonances found are summarized in a table giving the resonant energies, E₀, and a qualitative value of the strength, ₀^2. For some cases, the isotope responsible for the resonance has been identified and is also listed.
Sailor et al. (Mon,) studied this question.