^(71)Ga(n,γ)^(72)Ga和^(180)Hf(n,γ)^(181)Hf反应截面的测量与评价  

Measurements and Evaluations of ^(71)Ga(n,γ)^(72)Ga and ^(180)Hf(n,γ)^(181)Hf Capture Cross Sections

作　　者：江历阳[1] 李景文[1] 陈雄军[1] 韩晓刚[1] 仲启平[1] 于伟翔[1] 

机构地区：[1]中国原子能科学研究院核物理研究所,北京102413

出　　处：《原子能科学技术》2012年第6期641-647,共7页Atomic Energy Science and Technology

摘　　要：为解决目前71 Ga(n,γ)72 Ga反应和180 Hf(n,γ)181 Hf反应截面实验数据的分歧,在中国原子能科学研究院的600kV高压倍加器和5SDH-2串列加速器上用活化法在0.5～3MeV能区内测量了这两个反应在4个能点的反应截面。并对国内外0.01～4MeV范围内的实验数据进行了修正和评价,最终给出了这两个反应在此能区范围内的推荐值。To clarify the difference amongst the experimental data of 71Ga（n,γ）72Ga and 180Hf（n,γ） 181Hf neutron capture cross sections,measurements with activation method were carried out on 600 kV CCW accelerator and 5SDH-2 tandem accelerator in CIAE.Cross sections of these two reactions at four points of incident energy were acquired.With these results,experimental data in libraries in the energy range from 0.01 MeV to 4 MeV were evaluated and some of them were modified and selected.Finally,with the fitting of the experimental data,the excitation function within the energy range was recommended.

关 键 词：71Ga 180Hf 197Au 俘获截面 散射中子 评价 

分 类 号：O571[理学—粒子物理与原子核物理]