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 Pd in the thermal-neutron energy region has been measured relative to the B(n,) 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 Pd, 11.8 eV of Pd, and 33 eV of Pd. Neutron-capture rays were measured with a large Ge detector array called "4Ge 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 Pd, and the preliminary cross section.