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Neutron capture cross section of palladium-107 in the thermal-neutron energy region

Nakamura, Shoji; Ota, Masayuki; Oshima, Masumi; Kitatani, Fumito; Kimura, Atsushi; Kin, Tadahiro; Koizumi, Mitsuo; Goko, Shinji*; Toh, Yosuke ; Hara, Kaoru; Harada, Hideo ; Hirose, Kentaro; Furutaka, Kazuyoshi; Igashira, Masayuki*; Katabuchi, Tatsuya*; Mizumoto, Motoharu*; Kino, Koichi*; Kiyanagi, Yoshiaki*; Hori, Junichi*; Takamiya, Koichi*; Fukutani, Satoshi*; Fujii, Toshiyuki*

The neutron capture cross section of $$^{107}$$Pd in the thermal-neutron energy region has been measured relative to the $$^{10}$$B(n,$$alphagamma$$) reaction cross section by the neutron time-of-flight (TOF) method. The relative cross section was normalized to the average value calculated by the SAMMY code with JENDL-4.0 at the three energy points: 6.8 eV of $$^{107}$$Pd, 11.8 eV of $$^{105}$$Pd, and 33 eV of $$^{108}$$Pd. Neutron-capture $$gamma$$ rays were measured with a large Ge detector array called "4$$pi$$Ge spectrometer", which is one component of the Accurate Neutron-Nucleus Reaction measurement Instrument (ANNRI) installed at the neutron Beam Line No.4 (BL04) of the Materials and Life science experimental Facility (MLF) in the Japan Proton Accelerator Research Complex (J-PARC). This paper presents new findings on resonance assignments of $$^{107}$$Pd, and the preliminary cross section.

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