Nucleon scattering on actinides using a dispersive optical model with extended couplings (vol 94, 064605, 2016)

The dispersive optical model potential with the multiband coupling scheme and corresponding matrix elements derived in the original paper were implemented in a customized version of the FRESCO [1] code1 to cross-check against the original calculations performed with the OPTMAN code [2,3]. It was found that optical model cross-section calculations presented in the paper were affected by coding errors in OPTMAN. The corrected version of the OPTMAN code calculates all cross sections in perfect agreement with FRESCO implementation. The largest impact of the identified OPTMAN bugs on calculated neutron cross sections on even-even actinides is a 30–50% overestimation of the coupling strength for the excitation of negative-parity bands (a smaller underestimation of the coupling strength of the “anomalous” K = 2 nonaxial band was also found). Those coupling-strength differences lead to slightly larger inelastic cross-section values on corresponding coupled bands. Note that these changed cross sections still represent a small fraction of the total reaction cross section and do not affect noticeably the calculated total cross sections. Due to OPTMAN coding errors, the optical model potential (OMP) parameters and parametrized coupling strengths had to be refitted and are tabulated in this Erratum. The following changes to the text are to be made. © 2020 American Physical Society. All rights reserved.