Song Yueli, Zhou Fengqun, Tian Mingli, Li Yong, Yuan Shuqing, Lan Changlin
Electric and Information Engineering College, Pingdingshan University, Pingdingshan, Henan Province 467000, PR China.
Electric and Information Engineering College, Pingdingshan University, Pingdingshan, Henan Province 467000, PR China.
Appl Radiat Isot. 2015 Apr;98:29-33. doi: 10.1016/j.apradiso.2014.11.018. Epub 2014 Nov 24.
The cross section for the (182)W(n,p)(182(m+g))Ta and (184)W(n,p)(184)Ta reactions has been measured in the neutron energy range of 13.5-14.7MeV using the activation technique and a coaxial HPGe γ-ray detector. In our experiment, the fast neutrons were produced by the T(d,n)(4)He reaction at the ZF-300-II Intense Neutron Generator at Lanzhou University. Natural wolfram foils of 99.9% purity were used as target materials. The neutron flux was determined using the monitor reaction (93)Nb(n,2n)(92m)Nb and the neutron energies were determined using the method of cross-section ratio measurements employing the (90)Zr(n,2n)(89)Zr to (93)Nb(n,2n)(92m)Nb reactions. The results of this work are compared with experimental data found in the literature and the estimates obtained from a published empirical formula based on the statistical model with Q-value dependence and odd-even effects taken into consideration.
利用活化技术和同轴HPGeγ射线探测器，在13.5 - 14.7MeV的中子能量范围内测量了(182)W(n,p)(182(m+g))Ta和(184)W(n,p)(184)Ta反应的截面。在我们的实验中，快中子由兰州大学ZF - 300 - II强中子发生器中的T(d,n)(4)He反应产生。使用纯度为99.9%的天然钨箔作为靶材料。利用监测反应(93)Nb(n,2n)(92m)Nb确定中子通量，并利用采用(90)Zr(n,2n)(89)Zr与(93)Nb(n,2n)(92m)Nb反应的截面比测量方法确定中子能量。将这项工作的结果与文献中的实验数据以及基于考虑了Q值依赖性和奇偶效应的统计模型的已发表经验公式所得到的估计值进行了比较。
