【摘要】 本文评价了14.6MeV中子的⁵⁶Fe（n,p）⁵⁶Mn反应截面,评价值为（109.6±0.6）×10^-27cm²。又报告了利用我校400kV高压倍加器D-T中子源的测量工作。中子通量密度是用²⁷Al（n,p）²⁷Mg和⁶³Cu（n,2n）⁶²Cu反应截面进行刻度的。⁵⁶Mn的Υ放射性是利用NaI谱仪和高纯锗多道谱仪进行测量的。经修正后的测量结果为（110.7±1.9）×10^-27cm²,在误差围内与评价值相符。更多还原

【Abstract】 The ⁵⁶Fe（n,p）⁵⁶Mn cross section of 14.6MeV neutron has been evaluated. The evaluated value is （109.6±0.6）×10^-27cm².That we make use of D-T neutron source of 400kV Cockroft-Walton accelerator in Nanjing University to measure this cross section also has been reported. The neutron flux density was calibrated by the cross setion of ²⁷Al（n,p）²⁷Mg and ⁶³Cu（n,2n）⁶²Cu. The Υ-activity of ⁵⁶Mn was measured by NaI（T1） scintillation spectrometer and HPGe-multichannel analyser. The measured result with correction is （110.7±1.9）×10^-27cm². It is in good agreement with evaluated data within the extent of the experiment error.更多还原