Measurement of the neutron total cross sections of natural palladium by using pulsed neutrons at Pohang neutron facility

The neutron total cross-sections of palladiums are measured in the neutron energy region from 0.1 eV to 500 eV by using time of flight method at the Pohang Neutron Facility. The Pohang Neutron Facility consists of an electron linac, a water-cooled tantalum target with a water moderator, and a 12 m long time-of-flight path, and is producing pulsed neutron beam from 65 MeV electron as 10-15 Hz repetition rate. The neutron detector is using a ⁶Li-ZnS(Ag) scintillator with a diameter of 12.5 cm and a thickness of 1.6 cm. Natural palladium metal plates with 5 × 5 cm² in area and 0.5 mm, 1 mm in thickness, are used for the neutron transmission measurement. The background level is determined by using a notch-filter of Co, In, and Cd sheets. The measurements are compared with other measurements and the evaluated data in ENDF/B-VII.0.