Phys. Rev. 162, 1130–1139 (1967)Neutron Resonance Parameters of the Erbium IsotopesReceived 14 June 1967; published in the issue dated October 1967 Neutron resonance parameters, s-wave strength functions, level densities, and radius parameters for Er162, Er164, Er166, Er167, and Er168 have been determined from total neutron cross-section measurements. Average cross-section measurements for Er162, Er164, and Er167 have been analyzed to determine neutron strength functions in the keV region, and the results are compared to those derived from the low-energy resonance-parameter data. A spin cutoff factor σ of 2.5±0.8 is derived from a comparison of the level densities of Er162, Er164, and Er167. The thermal-neutron total cross sections were measured for Er168 and Er164, and the paramagnetic scattering cross section for Er168 was determined to be 26.1±2.5 b. © 1967 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRev.162.1130
DOI:
10.1103/PhysRev.162.1130
PACS:
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