【摘要】 叙述了用双剂量计法较准确地测定了原子能研究院(d+T)中子场的中子和γ辐射在自由空气中的组织比释动能K_N和K_G,其中K_N的总不确定度为4.37％,并与用伴随粒子法确定的中子注量通过换算得到的组织比释动能比对,两者相差小于1.0％。此装置参加了由国际计量局组织的国际比对,并给出了比对结果。更多还原

【Abstract】 The double dosimeter method for neutron dosimetry is introduced, The neutron and gamma tissue kinetic energy released in matter (KERMA) Ktt and Ko in the free air of (d + T) neutron field at Institute of Atomic Energy, Beijing (IAEB) were determined. The uncertainty of K$ is 4.37%. The difference of KK measured by this method and by the conversion of neutron fluence determined by the associated particle method is less than 1.0%. This device has been used for international intercomparison of neutron dosimetry organized by Bureau International des Poids et Mesures (BIPM) .The results are also given.更多还原