^(176)Hf(n,2n)^(175)Hf反应截面测量  

Measurement of ^(176)Hf(n,2n)^(175)Hf Cross Section

作　　者：朱传新[1] 郑普[1] 郭海萍[1] 牟云峰[1] 何铁[1] 阳剑[1] 

机构地区：[1]中国工程物理研究院,四川绵阳621900

出　　处：《原子能科学技术》2010年第B09期7-11,共5页Atomic Energy Science and Technology

摘　　要：采用相对测量技术,以活化法对13.4～14.8MeV范围内的176Hf(n,2n)175Hf反应截面进行了测量。样品固定在距离D-T中子源20cm处的圆环的不同位置上进行中子辐照,采用93Nb(n,2n)92Nbm作为监测反应,活化产物采用高纯锗探测器进行了测量,所得14MeV附近的176Hf(n,2n)175Hf反应截面实验值为(2100±85)mb,对实验结果与公开文献值和ENDF/B6.8评价库数据进行了比对。Measurements of 176Hf（n, 2n）175Hf cross sections were carried out in the range of 13.4-14.8 MeV using the activation method and relative measurement technology. The samples were irradiated at the various positions on the ring of a 20 cm radius centered at the D-T neutron source. The 93Nb（n, 2n）92Nbm reaction was used to monitor the neutron flux in the target samples. The （n, 2n） products were measured using calibrated high pure Ge detector. 176Hf（n, 2n）175Hf cross section is （2 100±85） mb at 14 MeV. The results were presented and compared with the references’ results and ENDF/B6.8 evaluations.

关 键 词：HF 反应截面 相对测量 

分 类 号：O571.435[理学—粒子物理与原子核物理]