Evaluation and validation of d-Li cross section data for the IFMIF neutron source term simulation
Evaluation and validation of d-Li cross section data for the IFMIF neutron source term simulation
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IFMIF 中子源项模拟的 d-Li 截面数据的评估和验证
DOI：
10.1016/j.jnucmat.2007.04.038
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发表时间：
2007
影响因子：
3.1
通讯作者：
I. Schmuck
中科院分区：
文献类型：
--
作者：
U. Fischer;M. Avrigeanu;P. Pereslavtsev;S. Simakov;I. Schmuck
采用一种新的计算方法，考虑了复合核反应、预平衡过程、剥离和直接相互作用，对50 MeV以下的d+6，7 Li相互作用截面进行了全新的计算。计算的d+6，7 Li截面数据在实验室框架中准备，以标准ENDF-6数据格式存储，并由NJOY程序系统处理。使用McDeLicious代码进行了一系列基准计算，以测试新数据评估对实验厚和薄锂靶中子产额数据高达40 MeV的氘能量。结果表明，新的d+6，7 Li截面数据能很好地再现厚靶中子产额和微分中子发射截面。因此，有一个明显的改进IFMIF中子源项模拟与新的d+6，7 Li截面数据评估的预测精度。
A completely new evaluation of the d+6,7Li interaction cross sections up to 50MeV has been performed applying a new methodology which takes into account compound nucleus reactions, pre-equilibrium processes, stripping and direct interactions. The evaluated d+6,7Li cross section data were prepared in the laboratory frame, stored in standard ENDF-6 data format and processed by the NJOY code system. A series of benchmark calculations was performed with the McDeLicious code to test the new data evaluations against experimental thick and thin lithium target neutron yield data up to 40MeV deuteron energy. It was shown that the new d+6,7Li cross section data can well reproduce both the thick target neutron yields and differential neutron emission cross sections. Thus there is a clear improvement of the prediction accuracy for the IFMIF neutron source term simulation with the new d+6,7Li cross section data evaluations.