Maxwellian Averaged Neutron Capture Cross Sections in Fe-56 and Fe-57

作者：Wang Tao Feng^*; Lee Man Woo; Kim Guin Yun; Ro Tae Ik; Kang Yeong Rok; Igashira Masayuki; Katabuchi Tatsuya

来源：Chinese Physics Letters, 2014, 31(9): 092101.

DOI：10.1088/0256-307X/31/9/092101

Measurements of the keV-neutron capture cross sections and radiative gamma-ray spectrum of Fe-56 and Fe-57 are performed based on a Li-7(p,n)Be-7 reaction neutron source. The incident neutron spectrum on a capture sample is measured by means of a time-of-flight (TOF) method with a Li-6-glass detector. The radiative capture gamma-rays emitted from an iron (Fe-56 or Fe-57) or standard gold (Au-197) 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 gamma-ray pulse-height spectrum. The Maxwellian averaged neutron capture cross sections of Fe-56 and Fe-57 are derived according to the present capture cross section results.

• 出版日期2014-9
• 单位北京航空航天大学