New experimental measurement of natEr(n, γ) cross sections between 1 and 100 eV

Er-162 and Er-164 are two of the 35 p nuclei, and their (n, gamma) cross sections are important input parameters in nuclear astrophysics network calculations. The neutron capture cross section in the resonance region of isotopes and even the natural erbium (Er-nat) sample has not been measured experimentally according to the EXFOR database. The (n, gamma) cross section of Er-nat, using C6D6 liquid scintillator and pulse height weighting techniques to measure prompt gamma rays, has been measured in the energy range of 1-100 eV using a back streaming white neutron facility at China Spallation Neutron Source. The deduced neutron capture cross sections matches the evaluation databases ENDF/B-VIII.0, ENDF/B-VII.1, JENDL-4.0, and ROSFOND-2010, and resonance parameters extracted from the R-matrix code in the 1-100 eV region.

Automated summary

Er-162 and Er-164 are two of the 35 p nuclei, and their (n, gamma) cross sections are important input parameters in nuclear astrophysics network calculations. The neutron capture cross section of Er-nat has been experimentally measured in the energy range of 1-100 eV, matching evaluation databases.