Maxwellian Averaged Neutron Capture Cross Sections in 56Fe and 57Fe
WANG Tao-Feng1,2**, LEE Man-Woo3,5, KIM Guin-Yun3, RO Tae-Ik4, KANG Yeong-Rok4,5, IGASHIRA Masayuki6, KATABUCHI Tatsuya6
1International Research Center for Nuclei and Particles in the Cosmos, Beihang University, Beijing 100191 2School of Physics and Nuclear Energy Engineering, Beihang University, Beijing 100191 3Department of Physics, Kyungpook National University, Daegu 702-701, Korea 4Department of Physics, Dong-A University, Busan 604-714, Korea 5Research Center, Dong-nam Institute of Radiological and Medical Sciences, Busan 619-953, Korea 6Research Laboratory for Nuclear Reactors, Tokyo Institute of Technology, Tokyo 152-8550, Japan
Abstract：Measurements of the keV-neutron capture cross sections and radiative γ-ray spectrum of 56Fe and 57Fe are performed based on a 7Li(p,n)7Be reaction neutron source. The incident neutron spectrum on a capture sample is measured by means of a time-of-flight (TOF) method with a 6Li-glass detector. The radiative capture γ-rays emitted from an iron (56Fe or 57Fe) or standard gold (197Au) sample are detected by a large anti-Compton NaI(Tl) spectrometer covered with a heavy shield. The capture yields of samples are obtained by applying a pulse-height weighting technique to the corresponding capture γ-ray pulse-height spectrum. The Maxwellian averaged neutron capture cross sections of 56Fe and 57Fe are derived according to the present capture cross section results.
2014, Vol. 31 
