Misassigned neutron resonances ofNd142and stellar neutron capture cross sections

Time-of-flight spectra of the neutron capture events of $^{142}\mathrm{Nd}$ were measured using a spallation neutron source at the Japan Proton Accelerator Research Complex. The first six resonances of $^{142}\mathrm{Nd}$ reported in a previous work were not observed. The experimental results and cross-search of resonance energies in nuclear data libraries suggested that resonances of the impurity nuclide $^{141}\mathrm{Pr}$ have been mistakenly assigned as $^{142}\mathrm{Nd}$ in the previous experiment. To investigate the impact of the nonexistence of the resonances on the $s$-process nucleosynthesis model, the Maxwellian averaged neutron capture cross sections with and without the misassigned resonances were compared.