Total and Capture Cross Sections of Dysprosium Isotopes up to 20 MeV

<em>R</em>-Matrix Analysis and Statistical Properties of Dysprosium Isotopes in the Neutron Energy Ranges Up To A Few Kev

“…In this region, the evaluated thermal scattering and capture constant for the 164 Dy isotope shows differences with NIST compilation up to 8%. Also for 161 Dy isotopes, this work reports a value of the scattering cross section 10% higher than the NIST's reported value but in agreement with other evaluated works [6]. Particular emphasis should be devoted in future experimental campaigns to measuring scattering lengths for these two isotopes, particularly for the most abundant isotope, 164 Dy, with the largest total thermal cross section among the seven Dy isotopes.…”

“…On a different note related to the 4 th most abundant isotope, the scattering cross section of the 161 Dy isotope is still 2σ within the NIST compilation and was adopted from the ENDF/B-VIII.0 library based on the goodness of the fit of the natural data. This choice is also consistent with the evaluation work by Lee [6].…”

“…Following the evaluation work performed by Lee in the mid 2000s [6] and the series of recent transmission and neutron capture yield measurements on enriched and natural Dy samples performed at the Gaerttner LINear ACcelarator (LINAC) facility at Rensselaer Polytechnic Institute [7,8], this work presents the newly evaluated set of neutron resonance parameters for total and capture cross sections on 156,158,[160][161][162][163][164] Dy isotopes in the energy range of thermal energy up to a few keVs. The analysis of the experimental data sets uses the SAMMY [9] code, which performs a multi-level, multi-channel R-matrix fit to neutron data in the Reich-Moore (RM) formalism.…”