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$$^{241}$$Am neutron capture cross section measurement using the NaI(Tl) spectrometer of the ANNRI beamline of J-PARC

Rovira Leveroni, G.   ; 木村 敦   ; 中村 詔司  ; 遠藤 駿典   ; 岩本 修  ; 岩本 信之  ; 片渕 竜也*; 児玉 有*; 中野 秀仁*; 佐藤 八起*

Rovira Leveroni, G.; Kimura, Atsushi; Nakamura, Shoji; Endo, Shunsuke; Iwamoto, Osamu; Iwamoto, Nobuyuki; Katabuchi, Tatsuya*; Kodama, Yu*; Nakano, Hideto*; Sato, Yaoki*

The neutron capture cross-section of $$^{241}$$Am was measured from 10 meV to about 1 MeV using the NaI(Tl) spectrometer of the Accurate Neutron-Nucleus Reaction Measurement Instrument (ANNRI) beamline in the Materials and Life Science (MLF) facility of the Japan Proton Accelerator Research Complex (J-PARC). The total energy detection principle was applied in conjunction with the pulse-height weighting technique to derive the neutron capture yield. The present cross-section results were normalized using a $$^{197}$$Au sample measurement by applying the saturated resonance method. The thermal cross section was measured to be 708 $$pm$$ 22 b, in agreement within uncertainties to the present evaluation in JENDL-5 of 709 b. Moreover, the results of a shape resonance analysis of the resolved resonance region are also provided in the present dissertation.

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パーセンタイル:41.04

分野:Nuclear Science & Technology

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