Misassigned neutron resonances of Nd and stellar neutron capture cross sections

Katabuchi, Tatsuya*; Matsuhashi, Taihei*; Terada, Kazushi; Igashira, Masayuki*; Mizumoto, Motoharu*; Hirose, Kentaro  ; Kimura, Atsushi   ; Iwamoto, Nobuyuki  ; Hara, Kaoru*; Harada, Hideo   ; Hori, Junichi*; Kamiyama, Takashi*; Kino, Koichi*; Kitatani, Fumito  ; Kiyanagi, Yoshiaki*; Nakamura, Shoji  ; Toh, Yosuke   

Time-of-flight spectra of the neutron capture events of Nd were measured using a spallation neutron source at the Japan Proton Accelerator Research Complex. The first six resonances of 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 impurity nuclide Pr have been mistakenly assigned as Nd in the previous experiment. To investigate the impact of non-existence of the resonances to the s-process nucleosynthesis model, the Maxwellian averaged neutron capture cross sections with and without the misassigned resonances were compared.