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Misassigned neutron resonances of $$^{142}$$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 $$^{142}$$Nd were measured using a spallation neutron source at the Japan Proton Accelerator Research Complex. The first six resonances of $$^{142}$$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 $$^{141}$$Pr have been mistakenly assigned as $$^{142}$$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.

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Category:Physics, Nuclear

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